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1 | c896fe29 | bellard | /*
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2 | c896fe29 | bellard | * Tiny Code Generator for QEMU
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3 | c896fe29 | bellard | *
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4 | c896fe29 | bellard | * Copyright (c) 2008 Fabrice Bellard
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5 | c896fe29 | bellard | *
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6 | c896fe29 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | c896fe29 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | c896fe29 | bellard | * in the Software without restriction, including without limitation the rights
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9 | c896fe29 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | c896fe29 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | c896fe29 | bellard | * furnished to do so, subject to the following conditions:
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12 | c896fe29 | bellard | *
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13 | c896fe29 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | c896fe29 | bellard | * all copies or substantial portions of the Software.
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15 | c896fe29 | bellard | *
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16 | c896fe29 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | c896fe29 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | c896fe29 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | c896fe29 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | c896fe29 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | c896fe29 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | c896fe29 | bellard | * THE SOFTWARE.
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23 | c896fe29 | bellard | */
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24 | c896fe29 | bellard | |
25 | c896fe29 | bellard | /* define it to use liveness analysis (better code) */
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26 | c896fe29 | bellard | #define USE_LIVENESS_ANALYSIS
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27 | 8f2e8c07 | Kirill Batuzov | #define USE_TCG_OPTIMIZATIONS
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28 | c896fe29 | bellard | |
29 | cca82982 | aurel32 | #include "config.h" |
30 | cca82982 | aurel32 | |
31 | a6c6f76c | Blue Swirl | #if !defined(CONFIG_DEBUG_TCG) && !defined(NDEBUG)
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32 | cca82982 | aurel32 | /* define it to suppress various consistency checks (faster) */
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33 | cca82982 | aurel32 | #define NDEBUG
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34 | cca82982 | aurel32 | #endif
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35 | cca82982 | aurel32 | |
36 | c896fe29 | bellard | #include <stdarg.h> |
37 | c896fe29 | bellard | #include <stdlib.h> |
38 | c896fe29 | bellard | #include <stdio.h> |
39 | c896fe29 | bellard | #include <string.h> |
40 | c896fe29 | bellard | #include <inttypes.h> |
41 | 3fe43da7 | bellard | #ifdef _WIN32
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42 | 3fe43da7 | bellard | #include <malloc.h> |
43 | 3fe43da7 | bellard | #endif
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44 | b29fe3ed | malc | #ifdef _AIX
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45 | b29fe3ed | malc | #include <alloca.h> |
46 | b29fe3ed | malc | #endif
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47 | c896fe29 | bellard | |
48 | ca10f867 | aurel32 | #include "qemu-common.h" |
49 | 902b3d5c | malc | #include "cache-utils.h" |
50 | 379f6698 | Paul Brook | #include "host-utils.h" |
51 | 2d8ebcf9 | Richard Henderson | #include "qemu-timer.h" |
52 | c896fe29 | bellard | |
53 | c896fe29 | bellard | /* Note: the long term plan is to reduce the dependancies on the QEMU
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54 | c896fe29 | bellard | CPU definitions. Currently they are used for qemu_ld/st
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55 | c896fe29 | bellard | instructions */
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56 | c896fe29 | bellard | #define NO_CPU_IO_DEFS
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57 | c896fe29 | bellard | #include "cpu.h" |
58 | c896fe29 | bellard | |
59 | c896fe29 | bellard | #include "tcg-op.h" |
60 | c896fe29 | bellard | #include "elf.h" |
61 | c896fe29 | bellard | |
62 | 379f6698 | Paul Brook | #if defined(CONFIG_USE_GUEST_BASE) && !defined(TCG_TARGET_HAS_GUEST_BASE)
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63 | 379f6698 | Paul Brook | #error GUEST_BASE not supported on this host.
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64 | 379f6698 | Paul Brook | #endif
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65 | c896fe29 | bellard | |
66 | c0ad3001 | Stefan Weil | /* Forward declarations for functions declared in tcg-target.c and used here. */
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67 | e4d58b41 | Richard Henderson | static void tcg_target_init(TCGContext *s); |
68 | e4d58b41 | Richard Henderson | static void tcg_target_qemu_prologue(TCGContext *s); |
69 | c896fe29 | bellard | static void patch_reloc(uint8_t *code_ptr, int type, |
70 | f54b3f92 | aurel32 | tcg_target_long value, tcg_target_long addend); |
71 | c896fe29 | bellard | |
72 | c0ad3001 | Stefan Weil | /* Forward declarations for functions declared and used in tcg-target.c. */
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73 | c0ad3001 | Stefan Weil | static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str); |
74 | 2a534aff | Richard Henderson | static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1, |
75 | c0ad3001 | Stefan Weil | tcg_target_long arg2); |
76 | 2a534aff | Richard Henderson | static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg); |
77 | c0ad3001 | Stefan Weil | static void tcg_out_movi(TCGContext *s, TCGType type, |
78 | 2a534aff | Richard Henderson | TCGReg ret, tcg_target_long arg); |
79 | c0ad3001 | Stefan Weil | static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args, |
80 | c0ad3001 | Stefan Weil | const int *const_args); |
81 | 2a534aff | Richard Henderson | static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1, |
82 | c0ad3001 | Stefan Weil | tcg_target_long arg2); |
83 | c0ad3001 | Stefan Weil | static int tcg_target_const_match(tcg_target_long val, |
84 | c0ad3001 | Stefan Weil | const TCGArgConstraint *arg_ct);
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85 | c0ad3001 | Stefan Weil | static int tcg_target_get_call_iarg_regs_count(int flags); |
86 | c0ad3001 | Stefan Weil | |
87 | 8399ad59 | Richard Henderson | TCGOpDef tcg_op_defs[] = { |
88 | 0e2029a0 | Aurelien Jarno | #define DEF(s, oargs, iargs, cargs, flags) { #s, oargs, iargs, cargs, iargs + oargs + cargs, flags }, |
89 | c896fe29 | bellard | #include "tcg-opc.h" |
90 | c896fe29 | bellard | #undef DEF
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91 | c896fe29 | bellard | }; |
92 | 2a24374a | Stefan Weil | const size_t tcg_op_defs_max = ARRAY_SIZE(tcg_op_defs);
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93 | c896fe29 | bellard | |
94 | b1d8e52e | blueswir1 | static TCGRegSet tcg_target_available_regs[2]; |
95 | b1d8e52e | blueswir1 | static TCGRegSet tcg_target_call_clobber_regs;
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96 | c896fe29 | bellard | |
97 | c896fe29 | bellard | /* XXX: move that inside the context */
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98 | c896fe29 | bellard | uint16_t *gen_opc_ptr; |
99 | c896fe29 | bellard | TCGArg *gen_opparam_ptr; |
100 | c896fe29 | bellard | |
101 | c896fe29 | bellard | static inline void tcg_out8(TCGContext *s, uint8_t v) |
102 | c896fe29 | bellard | { |
103 | c896fe29 | bellard | *s->code_ptr++ = v; |
104 | c896fe29 | bellard | } |
105 | c896fe29 | bellard | |
106 | c896fe29 | bellard | static inline void tcg_out16(TCGContext *s, uint16_t v) |
107 | c896fe29 | bellard | { |
108 | c896fe29 | bellard | *(uint16_t *)s->code_ptr = v; |
109 | c896fe29 | bellard | s->code_ptr += 2;
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110 | c896fe29 | bellard | } |
111 | c896fe29 | bellard | |
112 | c896fe29 | bellard | static inline void tcg_out32(TCGContext *s, uint32_t v) |
113 | c896fe29 | bellard | { |
114 | c896fe29 | bellard | *(uint32_t *)s->code_ptr = v; |
115 | c896fe29 | bellard | s->code_ptr += 4;
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116 | c896fe29 | bellard | } |
117 | c896fe29 | bellard | |
118 | c896fe29 | bellard | /* label relocation processing */
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119 | c896fe29 | bellard | |
120 | a5ad5916 | Stefan Weil | static void tcg_out_reloc(TCGContext *s, uint8_t *code_ptr, int type, |
121 | a5ad5916 | Stefan Weil | int label_index, long addend) |
122 | c896fe29 | bellard | { |
123 | c896fe29 | bellard | TCGLabel *l; |
124 | c896fe29 | bellard | TCGRelocation *r; |
125 | c896fe29 | bellard | |
126 | c896fe29 | bellard | l = &s->labels[label_index]; |
127 | c896fe29 | bellard | if (l->has_value) {
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128 | 623e265c | pbrook | /* FIXME: This may break relocations on RISC targets that
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129 | 623e265c | pbrook | modify instruction fields in place. The caller may not have
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130 | 623e265c | pbrook | written the initial value. */
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131 | f54b3f92 | aurel32 | patch_reloc(code_ptr, type, l->u.value, addend); |
132 | c896fe29 | bellard | } else {
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133 | c896fe29 | bellard | /* add a new relocation entry */
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134 | c896fe29 | bellard | r = tcg_malloc(sizeof(TCGRelocation));
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135 | c896fe29 | bellard | r->type = type; |
136 | c896fe29 | bellard | r->ptr = code_ptr; |
137 | c896fe29 | bellard | r->addend = addend; |
138 | c896fe29 | bellard | r->next = l->u.first_reloc; |
139 | c896fe29 | bellard | l->u.first_reloc = r; |
140 | c896fe29 | bellard | } |
141 | c896fe29 | bellard | } |
142 | c896fe29 | bellard | |
143 | c896fe29 | bellard | static void tcg_out_label(TCGContext *s, int label_index, |
144 | c896fe29 | bellard | tcg_target_long value) |
145 | c896fe29 | bellard | { |
146 | c896fe29 | bellard | TCGLabel *l; |
147 | c896fe29 | bellard | TCGRelocation *r; |
148 | c896fe29 | bellard | |
149 | c896fe29 | bellard | l = &s->labels[label_index]; |
150 | c896fe29 | bellard | if (l->has_value)
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151 | c896fe29 | bellard | tcg_abort(); |
152 | c896fe29 | bellard | r = l->u.first_reloc; |
153 | c896fe29 | bellard | while (r != NULL) { |
154 | f54b3f92 | aurel32 | patch_reloc(r->ptr, r->type, value, r->addend); |
155 | c896fe29 | bellard | r = r->next; |
156 | c896fe29 | bellard | } |
157 | c896fe29 | bellard | l->has_value = 1;
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158 | c896fe29 | bellard | l->u.value = value; |
159 | c896fe29 | bellard | } |
160 | c896fe29 | bellard | |
161 | c896fe29 | bellard | int gen_new_label(void) |
162 | c896fe29 | bellard | { |
163 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
164 | c896fe29 | bellard | int idx;
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165 | c896fe29 | bellard | TCGLabel *l; |
166 | c896fe29 | bellard | |
167 | c896fe29 | bellard | if (s->nb_labels >= TCG_MAX_LABELS)
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168 | c896fe29 | bellard | tcg_abort(); |
169 | c896fe29 | bellard | idx = s->nb_labels++; |
170 | c896fe29 | bellard | l = &s->labels[idx]; |
171 | c896fe29 | bellard | l->has_value = 0;
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172 | c896fe29 | bellard | l->u.first_reloc = NULL;
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173 | c896fe29 | bellard | return idx;
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174 | c896fe29 | bellard | } |
175 | c896fe29 | bellard | |
176 | c896fe29 | bellard | #include "tcg-target.c" |
177 | c896fe29 | bellard | |
178 | c896fe29 | bellard | /* pool based memory allocation */
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179 | c896fe29 | bellard | void *tcg_malloc_internal(TCGContext *s, int size) |
180 | c896fe29 | bellard | { |
181 | c896fe29 | bellard | TCGPool *p; |
182 | c896fe29 | bellard | int pool_size;
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183 | c896fe29 | bellard | |
184 | c896fe29 | bellard | if (size > TCG_POOL_CHUNK_SIZE) {
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185 | c896fe29 | bellard | /* big malloc: insert a new pool (XXX: could optimize) */
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186 | 7267c094 | Anthony Liguori | p = g_malloc(sizeof(TCGPool) + size);
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187 | c896fe29 | bellard | p->size = size; |
188 | c896fe29 | bellard | if (s->pool_current)
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189 | c896fe29 | bellard | s->pool_current->next = p; |
190 | c896fe29 | bellard | else
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191 | c896fe29 | bellard | s->pool_first = p; |
192 | c896fe29 | bellard | p->next = s->pool_current; |
193 | c896fe29 | bellard | } else {
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194 | c896fe29 | bellard | p = s->pool_current; |
195 | c896fe29 | bellard | if (!p) {
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196 | c896fe29 | bellard | p = s->pool_first; |
197 | c896fe29 | bellard | if (!p)
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198 | c896fe29 | bellard | goto new_pool;
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199 | c896fe29 | bellard | } else {
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200 | c896fe29 | bellard | if (!p->next) {
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201 | c896fe29 | bellard | new_pool:
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202 | c896fe29 | bellard | pool_size = TCG_POOL_CHUNK_SIZE; |
203 | 7267c094 | Anthony Liguori | p = g_malloc(sizeof(TCGPool) + pool_size);
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204 | c896fe29 | bellard | p->size = pool_size; |
205 | c896fe29 | bellard | p->next = NULL;
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206 | c896fe29 | bellard | if (s->pool_current)
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207 | c896fe29 | bellard | s->pool_current->next = p; |
208 | c896fe29 | bellard | else
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209 | c896fe29 | bellard | s->pool_first = p; |
210 | c896fe29 | bellard | } else {
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211 | c896fe29 | bellard | p = p->next; |
212 | c896fe29 | bellard | } |
213 | c896fe29 | bellard | } |
214 | c896fe29 | bellard | } |
215 | c896fe29 | bellard | s->pool_current = p; |
216 | c896fe29 | bellard | s->pool_cur = p->data + size; |
217 | c896fe29 | bellard | s->pool_end = p->data + p->size; |
218 | c896fe29 | bellard | return p->data;
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219 | c896fe29 | bellard | } |
220 | c896fe29 | bellard | |
221 | c896fe29 | bellard | void tcg_pool_reset(TCGContext *s)
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222 | c896fe29 | bellard | { |
223 | c896fe29 | bellard | s->pool_cur = s->pool_end = NULL;
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224 | c896fe29 | bellard | s->pool_current = NULL;
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225 | c896fe29 | bellard | } |
226 | c896fe29 | bellard | |
227 | c896fe29 | bellard | void tcg_context_init(TCGContext *s)
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228 | c896fe29 | bellard | { |
229 | c896fe29 | bellard | int op, total_args, n;
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230 | c896fe29 | bellard | TCGOpDef *def; |
231 | c896fe29 | bellard | TCGArgConstraint *args_ct; |
232 | c896fe29 | bellard | int *sorted_args;
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233 | c896fe29 | bellard | |
234 | c896fe29 | bellard | memset(s, 0, sizeof(*s)); |
235 | c896fe29 | bellard | s->temps = s->static_temps; |
236 | c896fe29 | bellard | s->nb_globals = 0;
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237 | c896fe29 | bellard | |
238 | c896fe29 | bellard | /* Count total number of arguments and allocate the corresponding
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239 | c896fe29 | bellard | space */
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240 | c896fe29 | bellard | total_args = 0;
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241 | c896fe29 | bellard | for(op = 0; op < NB_OPS; op++) { |
242 | c896fe29 | bellard | def = &tcg_op_defs[op]; |
243 | c896fe29 | bellard | n = def->nb_iargs + def->nb_oargs; |
244 | c896fe29 | bellard | total_args += n; |
245 | c896fe29 | bellard | } |
246 | c896fe29 | bellard | |
247 | 7267c094 | Anthony Liguori | args_ct = g_malloc(sizeof(TCGArgConstraint) * total_args);
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248 | 7267c094 | Anthony Liguori | sorted_args = g_malloc(sizeof(int) * total_args); |
249 | c896fe29 | bellard | |
250 | c896fe29 | bellard | for(op = 0; op < NB_OPS; op++) { |
251 | c896fe29 | bellard | def = &tcg_op_defs[op]; |
252 | c896fe29 | bellard | def->args_ct = args_ct; |
253 | c896fe29 | bellard | def->sorted_args = sorted_args; |
254 | c896fe29 | bellard | n = def->nb_iargs + def->nb_oargs; |
255 | c896fe29 | bellard | sorted_args += n; |
256 | c896fe29 | bellard | args_ct += n; |
257 | c896fe29 | bellard | } |
258 | c896fe29 | bellard | |
259 | c896fe29 | bellard | tcg_target_init(s); |
260 | 9002ec79 | Richard Henderson | } |
261 | b03cce8e | bellard | |
262 | 9002ec79 | Richard Henderson | void tcg_prologue_init(TCGContext *s)
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263 | 9002ec79 | Richard Henderson | { |
264 | b03cce8e | bellard | /* init global prologue and epilogue */
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265 | b03cce8e | bellard | s->code_buf = code_gen_prologue; |
266 | b03cce8e | bellard | s->code_ptr = s->code_buf; |
267 | b03cce8e | bellard | tcg_target_qemu_prologue(s); |
268 | b03cce8e | bellard | flush_icache_range((unsigned long)s->code_buf, |
269 | b03cce8e | bellard | (unsigned long)s->code_ptr); |
270 | c896fe29 | bellard | } |
271 | c896fe29 | bellard | |
272 | c896fe29 | bellard | void tcg_set_frame(TCGContext *s, int reg, |
273 | c896fe29 | bellard | tcg_target_long start, tcg_target_long size) |
274 | c896fe29 | bellard | { |
275 | c896fe29 | bellard | s->frame_start = start; |
276 | c896fe29 | bellard | s->frame_end = start + size; |
277 | c896fe29 | bellard | s->frame_reg = reg; |
278 | c896fe29 | bellard | } |
279 | c896fe29 | bellard | |
280 | c896fe29 | bellard | void tcg_func_start(TCGContext *s)
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281 | c896fe29 | bellard | { |
282 | e8996ee0 | bellard | int i;
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283 | c896fe29 | bellard | tcg_pool_reset(s); |
284 | c896fe29 | bellard | s->nb_temps = s->nb_globals; |
285 | 641d5fbe | bellard | for(i = 0; i < (TCG_TYPE_COUNT * 2); i++) |
286 | e8996ee0 | bellard | s->first_free_temp[i] = -1;
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287 | c896fe29 | bellard | s->labels = tcg_malloc(sizeof(TCGLabel) * TCG_MAX_LABELS);
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288 | c896fe29 | bellard | s->nb_labels = 0;
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289 | c896fe29 | bellard | s->current_frame_offset = s->frame_start; |
290 | c896fe29 | bellard | |
291 | c896fe29 | bellard | gen_opc_ptr = gen_opc_buf; |
292 | c896fe29 | bellard | gen_opparam_ptr = gen_opparam_buf; |
293 | c896fe29 | bellard | } |
294 | c896fe29 | bellard | |
295 | c896fe29 | bellard | static inline void tcg_temp_alloc(TCGContext *s, int n) |
296 | c896fe29 | bellard | { |
297 | c896fe29 | bellard | if (n > TCG_MAX_TEMPS)
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298 | c896fe29 | bellard | tcg_abort(); |
299 | c896fe29 | bellard | } |
300 | c896fe29 | bellard | |
301 | a7812ae4 | pbrook | static inline int tcg_global_reg_new_internal(TCGType type, int reg, |
302 | a7812ae4 | pbrook | const char *name) |
303 | c896fe29 | bellard | { |
304 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
305 | c896fe29 | bellard | TCGTemp *ts; |
306 | c896fe29 | bellard | int idx;
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307 | c896fe29 | bellard | |
308 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 32 |
309 | c896fe29 | bellard | if (type != TCG_TYPE_I32)
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310 | c896fe29 | bellard | tcg_abort(); |
311 | c896fe29 | bellard | #endif
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312 | c896fe29 | bellard | if (tcg_regset_test_reg(s->reserved_regs, reg))
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313 | c896fe29 | bellard | tcg_abort(); |
314 | c896fe29 | bellard | idx = s->nb_globals; |
315 | c896fe29 | bellard | tcg_temp_alloc(s, s->nb_globals + 1);
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316 | c896fe29 | bellard | ts = &s->temps[s->nb_globals]; |
317 | c896fe29 | bellard | ts->base_type = type; |
318 | c896fe29 | bellard | ts->type = type; |
319 | c896fe29 | bellard | ts->fixed_reg = 1;
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320 | c896fe29 | bellard | ts->reg = reg; |
321 | c896fe29 | bellard | ts->name = name; |
322 | c896fe29 | bellard | s->nb_globals++; |
323 | c896fe29 | bellard | tcg_regset_set_reg(s->reserved_regs, reg); |
324 | a7812ae4 | pbrook | return idx;
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325 | a7812ae4 | pbrook | } |
326 | a7812ae4 | pbrook | |
327 | a7812ae4 | pbrook | TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name) |
328 | a7812ae4 | pbrook | { |
329 | a7812ae4 | pbrook | int idx;
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330 | a7812ae4 | pbrook | |
331 | a7812ae4 | pbrook | idx = tcg_global_reg_new_internal(TCG_TYPE_I32, reg, name); |
332 | a7812ae4 | pbrook | return MAKE_TCGV_I32(idx);
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333 | a7812ae4 | pbrook | } |
334 | a7812ae4 | pbrook | |
335 | a7812ae4 | pbrook | TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name) |
336 | a7812ae4 | pbrook | { |
337 | a7812ae4 | pbrook | int idx;
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338 | a7812ae4 | pbrook | |
339 | a7812ae4 | pbrook | idx = tcg_global_reg_new_internal(TCG_TYPE_I64, reg, name); |
340 | a7812ae4 | pbrook | return MAKE_TCGV_I64(idx);
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341 | c896fe29 | bellard | } |
342 | c896fe29 | bellard | |
343 | a7812ae4 | pbrook | static inline int tcg_global_mem_new_internal(TCGType type, int reg, |
344 | a7812ae4 | pbrook | tcg_target_long offset, |
345 | a7812ae4 | pbrook | const char *name) |
346 | c896fe29 | bellard | { |
347 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
348 | c896fe29 | bellard | TCGTemp *ts; |
349 | c896fe29 | bellard | int idx;
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350 | c896fe29 | bellard | |
351 | c896fe29 | bellard | idx = s->nb_globals; |
352 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 32 |
353 | c896fe29 | bellard | if (type == TCG_TYPE_I64) {
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354 | c896fe29 | bellard | char buf[64]; |
355 | c588979b | ths | tcg_temp_alloc(s, s->nb_globals + 2);
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356 | c896fe29 | bellard | ts = &s->temps[s->nb_globals]; |
357 | c896fe29 | bellard | ts->base_type = type; |
358 | c896fe29 | bellard | ts->type = TCG_TYPE_I32; |
359 | c896fe29 | bellard | ts->fixed_reg = 0;
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360 | c896fe29 | bellard | ts->mem_allocated = 1;
|
361 | c896fe29 | bellard | ts->mem_reg = reg; |
362 | c896fe29 | bellard | #ifdef TCG_TARGET_WORDS_BIGENDIAN
|
363 | c896fe29 | bellard | ts->mem_offset = offset + 4;
|
364 | c896fe29 | bellard | #else
|
365 | c896fe29 | bellard | ts->mem_offset = offset; |
366 | c896fe29 | bellard | #endif
|
367 | c896fe29 | bellard | pstrcpy(buf, sizeof(buf), name);
|
368 | c896fe29 | bellard | pstrcat(buf, sizeof(buf), "_0"); |
369 | c896fe29 | bellard | ts->name = strdup(buf); |
370 | c896fe29 | bellard | ts++; |
371 | c896fe29 | bellard | |
372 | c896fe29 | bellard | ts->base_type = type; |
373 | c896fe29 | bellard | ts->type = TCG_TYPE_I32; |
374 | c896fe29 | bellard | ts->fixed_reg = 0;
|
375 | c896fe29 | bellard | ts->mem_allocated = 1;
|
376 | c896fe29 | bellard | ts->mem_reg = reg; |
377 | c896fe29 | bellard | #ifdef TCG_TARGET_WORDS_BIGENDIAN
|
378 | c896fe29 | bellard | ts->mem_offset = offset; |
379 | c896fe29 | bellard | #else
|
380 | c896fe29 | bellard | ts->mem_offset = offset + 4;
|
381 | c896fe29 | bellard | #endif
|
382 | c896fe29 | bellard | pstrcpy(buf, sizeof(buf), name);
|
383 | c896fe29 | bellard | pstrcat(buf, sizeof(buf), "_1"); |
384 | c896fe29 | bellard | ts->name = strdup(buf); |
385 | c896fe29 | bellard | |
386 | c896fe29 | bellard | s->nb_globals += 2;
|
387 | c896fe29 | bellard | } else
|
388 | c896fe29 | bellard | #endif
|
389 | c896fe29 | bellard | { |
390 | c896fe29 | bellard | tcg_temp_alloc(s, s->nb_globals + 1);
|
391 | c896fe29 | bellard | ts = &s->temps[s->nb_globals]; |
392 | c896fe29 | bellard | ts->base_type = type; |
393 | c896fe29 | bellard | ts->type = type; |
394 | c896fe29 | bellard | ts->fixed_reg = 0;
|
395 | c896fe29 | bellard | ts->mem_allocated = 1;
|
396 | c896fe29 | bellard | ts->mem_reg = reg; |
397 | c896fe29 | bellard | ts->mem_offset = offset; |
398 | c896fe29 | bellard | ts->name = name; |
399 | c896fe29 | bellard | s->nb_globals++; |
400 | c896fe29 | bellard | } |
401 | a7812ae4 | pbrook | return idx;
|
402 | a7812ae4 | pbrook | } |
403 | a7812ae4 | pbrook | |
404 | a7812ae4 | pbrook | TCGv_i32 tcg_global_mem_new_i32(int reg, tcg_target_long offset,
|
405 | a7812ae4 | pbrook | const char *name) |
406 | a7812ae4 | pbrook | { |
407 | a7812ae4 | pbrook | int idx;
|
408 | a7812ae4 | pbrook | |
409 | a7812ae4 | pbrook | idx = tcg_global_mem_new_internal(TCG_TYPE_I32, reg, offset, name); |
410 | a7812ae4 | pbrook | return MAKE_TCGV_I32(idx);
|
411 | a7812ae4 | pbrook | } |
412 | a7812ae4 | pbrook | |
413 | a7812ae4 | pbrook | TCGv_i64 tcg_global_mem_new_i64(int reg, tcg_target_long offset,
|
414 | a7812ae4 | pbrook | const char *name) |
415 | a7812ae4 | pbrook | { |
416 | a7812ae4 | pbrook | int idx;
|
417 | a7812ae4 | pbrook | |
418 | a7812ae4 | pbrook | idx = tcg_global_mem_new_internal(TCG_TYPE_I64, reg, offset, name); |
419 | a7812ae4 | pbrook | return MAKE_TCGV_I64(idx);
|
420 | c896fe29 | bellard | } |
421 | c896fe29 | bellard | |
422 | a7812ae4 | pbrook | static inline int tcg_temp_new_internal(TCGType type, int temp_local) |
423 | c896fe29 | bellard | { |
424 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
425 | c896fe29 | bellard | TCGTemp *ts; |
426 | 641d5fbe | bellard | int idx, k;
|
427 | c896fe29 | bellard | |
428 | 641d5fbe | bellard | k = type; |
429 | 641d5fbe | bellard | if (temp_local)
|
430 | 641d5fbe | bellard | k += TCG_TYPE_COUNT; |
431 | 641d5fbe | bellard | idx = s->first_free_temp[k]; |
432 | e8996ee0 | bellard | if (idx != -1) { |
433 | e8996ee0 | bellard | /* There is already an available temp with the
|
434 | e8996ee0 | bellard | right type */
|
435 | e8996ee0 | bellard | ts = &s->temps[idx]; |
436 | 641d5fbe | bellard | s->first_free_temp[k] = ts->next_free_temp; |
437 | e8996ee0 | bellard | ts->temp_allocated = 1;
|
438 | 641d5fbe | bellard | assert(ts->temp_local == temp_local); |
439 | e8996ee0 | bellard | } else {
|
440 | e8996ee0 | bellard | idx = s->nb_temps; |
441 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 32 |
442 | e8996ee0 | bellard | if (type == TCG_TYPE_I64) {
|
443 | 8df1ca4b | ths | tcg_temp_alloc(s, s->nb_temps + 2);
|
444 | e8996ee0 | bellard | ts = &s->temps[s->nb_temps]; |
445 | e8996ee0 | bellard | ts->base_type = type; |
446 | e8996ee0 | bellard | ts->type = TCG_TYPE_I32; |
447 | e8996ee0 | bellard | ts->temp_allocated = 1;
|
448 | 641d5fbe | bellard | ts->temp_local = temp_local; |
449 | e8996ee0 | bellard | ts->name = NULL;
|
450 | e8996ee0 | bellard | ts++; |
451 | e8996ee0 | bellard | ts->base_type = TCG_TYPE_I32; |
452 | e8996ee0 | bellard | ts->type = TCG_TYPE_I32; |
453 | e8996ee0 | bellard | ts->temp_allocated = 1;
|
454 | 641d5fbe | bellard | ts->temp_local = temp_local; |
455 | e8996ee0 | bellard | ts->name = NULL;
|
456 | e8996ee0 | bellard | s->nb_temps += 2;
|
457 | e8996ee0 | bellard | } else
|
458 | c896fe29 | bellard | #endif
|
459 | e8996ee0 | bellard | { |
460 | e8996ee0 | bellard | tcg_temp_alloc(s, s->nb_temps + 1);
|
461 | e8996ee0 | bellard | ts = &s->temps[s->nb_temps]; |
462 | e8996ee0 | bellard | ts->base_type = type; |
463 | e8996ee0 | bellard | ts->type = type; |
464 | e8996ee0 | bellard | ts->temp_allocated = 1;
|
465 | 641d5fbe | bellard | ts->temp_local = temp_local; |
466 | e8996ee0 | bellard | ts->name = NULL;
|
467 | e8996ee0 | bellard | s->nb_temps++; |
468 | e8996ee0 | bellard | } |
469 | c896fe29 | bellard | } |
470 | 27bfd83c | Peter Maydell | |
471 | 27bfd83c | Peter Maydell | #if defined(CONFIG_DEBUG_TCG)
|
472 | 27bfd83c | Peter Maydell | s->temps_in_use++; |
473 | 27bfd83c | Peter Maydell | #endif
|
474 | a7812ae4 | pbrook | return idx;
|
475 | c896fe29 | bellard | } |
476 | c896fe29 | bellard | |
477 | a7812ae4 | pbrook | TCGv_i32 tcg_temp_new_internal_i32(int temp_local)
|
478 | a7812ae4 | pbrook | { |
479 | a7812ae4 | pbrook | int idx;
|
480 | a7812ae4 | pbrook | |
481 | a7812ae4 | pbrook | idx = tcg_temp_new_internal(TCG_TYPE_I32, temp_local); |
482 | a7812ae4 | pbrook | return MAKE_TCGV_I32(idx);
|
483 | a7812ae4 | pbrook | } |
484 | a7812ae4 | pbrook | |
485 | a7812ae4 | pbrook | TCGv_i64 tcg_temp_new_internal_i64(int temp_local)
|
486 | a7812ae4 | pbrook | { |
487 | a7812ae4 | pbrook | int idx;
|
488 | a7812ae4 | pbrook | |
489 | a7812ae4 | pbrook | idx = tcg_temp_new_internal(TCG_TYPE_I64, temp_local); |
490 | a7812ae4 | pbrook | return MAKE_TCGV_I64(idx);
|
491 | a7812ae4 | pbrook | } |
492 | a7812ae4 | pbrook | |
493 | a7812ae4 | pbrook | static inline void tcg_temp_free_internal(int idx) |
494 | c896fe29 | bellard | { |
495 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
496 | c896fe29 | bellard | TCGTemp *ts; |
497 | 641d5fbe | bellard | int k;
|
498 | c896fe29 | bellard | |
499 | 27bfd83c | Peter Maydell | #if defined(CONFIG_DEBUG_TCG)
|
500 | 27bfd83c | Peter Maydell | s->temps_in_use--; |
501 | 27bfd83c | Peter Maydell | if (s->temps_in_use < 0) { |
502 | 27bfd83c | Peter Maydell | fprintf(stderr, "More temporaries freed than allocated!\n");
|
503 | 27bfd83c | Peter Maydell | } |
504 | 27bfd83c | Peter Maydell | #endif
|
505 | 27bfd83c | Peter Maydell | |
506 | e8996ee0 | bellard | assert(idx >= s->nb_globals && idx < s->nb_temps); |
507 | c896fe29 | bellard | ts = &s->temps[idx]; |
508 | e8996ee0 | bellard | assert(ts->temp_allocated != 0);
|
509 | e8996ee0 | bellard | ts->temp_allocated = 0;
|
510 | 641d5fbe | bellard | k = ts->base_type; |
511 | 641d5fbe | bellard | if (ts->temp_local)
|
512 | 641d5fbe | bellard | k += TCG_TYPE_COUNT; |
513 | 641d5fbe | bellard | ts->next_free_temp = s->first_free_temp[k]; |
514 | 641d5fbe | bellard | s->first_free_temp[k] = idx; |
515 | c896fe29 | bellard | } |
516 | c896fe29 | bellard | |
517 | a7812ae4 | pbrook | void tcg_temp_free_i32(TCGv_i32 arg)
|
518 | a7812ae4 | pbrook | { |
519 | a7812ae4 | pbrook | tcg_temp_free_internal(GET_TCGV_I32(arg)); |
520 | a7812ae4 | pbrook | } |
521 | a7812ae4 | pbrook | |
522 | a7812ae4 | pbrook | void tcg_temp_free_i64(TCGv_i64 arg)
|
523 | a7812ae4 | pbrook | { |
524 | a7812ae4 | pbrook | tcg_temp_free_internal(GET_TCGV_I64(arg)); |
525 | a7812ae4 | pbrook | } |
526 | e8996ee0 | bellard | |
527 | a7812ae4 | pbrook | TCGv_i32 tcg_const_i32(int32_t val) |
528 | c896fe29 | bellard | { |
529 | a7812ae4 | pbrook | TCGv_i32 t0; |
530 | a7812ae4 | pbrook | t0 = tcg_temp_new_i32(); |
531 | e8996ee0 | bellard | tcg_gen_movi_i32(t0, val); |
532 | e8996ee0 | bellard | return t0;
|
533 | e8996ee0 | bellard | } |
534 | c896fe29 | bellard | |
535 | a7812ae4 | pbrook | TCGv_i64 tcg_const_i64(int64_t val) |
536 | e8996ee0 | bellard | { |
537 | a7812ae4 | pbrook | TCGv_i64 t0; |
538 | a7812ae4 | pbrook | t0 = tcg_temp_new_i64(); |
539 | e8996ee0 | bellard | tcg_gen_movi_i64(t0, val); |
540 | e8996ee0 | bellard | return t0;
|
541 | c896fe29 | bellard | } |
542 | c896fe29 | bellard | |
543 | a7812ae4 | pbrook | TCGv_i32 tcg_const_local_i32(int32_t val) |
544 | bdffd4a9 | aurel32 | { |
545 | a7812ae4 | pbrook | TCGv_i32 t0; |
546 | a7812ae4 | pbrook | t0 = tcg_temp_local_new_i32(); |
547 | bdffd4a9 | aurel32 | tcg_gen_movi_i32(t0, val); |
548 | bdffd4a9 | aurel32 | return t0;
|
549 | bdffd4a9 | aurel32 | } |
550 | bdffd4a9 | aurel32 | |
551 | a7812ae4 | pbrook | TCGv_i64 tcg_const_local_i64(int64_t val) |
552 | bdffd4a9 | aurel32 | { |
553 | a7812ae4 | pbrook | TCGv_i64 t0; |
554 | a7812ae4 | pbrook | t0 = tcg_temp_local_new_i64(); |
555 | bdffd4a9 | aurel32 | tcg_gen_movi_i64(t0, val); |
556 | bdffd4a9 | aurel32 | return t0;
|
557 | bdffd4a9 | aurel32 | } |
558 | bdffd4a9 | aurel32 | |
559 | 27bfd83c | Peter Maydell | #if defined(CONFIG_DEBUG_TCG)
|
560 | 27bfd83c | Peter Maydell | void tcg_clear_temp_count(void) |
561 | 27bfd83c | Peter Maydell | { |
562 | 27bfd83c | Peter Maydell | TCGContext *s = &tcg_ctx; |
563 | 27bfd83c | Peter Maydell | s->temps_in_use = 0;
|
564 | 27bfd83c | Peter Maydell | } |
565 | 27bfd83c | Peter Maydell | |
566 | 27bfd83c | Peter Maydell | int tcg_check_temp_count(void) |
567 | 27bfd83c | Peter Maydell | { |
568 | 27bfd83c | Peter Maydell | TCGContext *s = &tcg_ctx; |
569 | 27bfd83c | Peter Maydell | if (s->temps_in_use) {
|
570 | 27bfd83c | Peter Maydell | /* Clear the count so that we don't give another
|
571 | 27bfd83c | Peter Maydell | * warning immediately next time around.
|
572 | 27bfd83c | Peter Maydell | */
|
573 | 27bfd83c | Peter Maydell | s->temps_in_use = 0;
|
574 | 27bfd83c | Peter Maydell | return 1; |
575 | 27bfd83c | Peter Maydell | } |
576 | 27bfd83c | Peter Maydell | return 0; |
577 | 27bfd83c | Peter Maydell | } |
578 | 27bfd83c | Peter Maydell | #endif
|
579 | 27bfd83c | Peter Maydell | |
580 | c896fe29 | bellard | void tcg_register_helper(void *func, const char *name) |
581 | c896fe29 | bellard | { |
582 | c896fe29 | bellard | TCGContext *s = &tcg_ctx; |
583 | c896fe29 | bellard | int n;
|
584 | c896fe29 | bellard | if ((s->nb_helpers + 1) > s->allocated_helpers) { |
585 | c896fe29 | bellard | n = s->allocated_helpers; |
586 | c896fe29 | bellard | if (n == 0) { |
587 | c896fe29 | bellard | n = 4;
|
588 | c896fe29 | bellard | } else {
|
589 | c896fe29 | bellard | n *= 2;
|
590 | c896fe29 | bellard | } |
591 | c896fe29 | bellard | s->helpers = realloc(s->helpers, n * sizeof(TCGHelperInfo));
|
592 | c896fe29 | bellard | s->allocated_helpers = n; |
593 | c896fe29 | bellard | } |
594 | 4dc81f28 | bellard | s->helpers[s->nb_helpers].func = (tcg_target_ulong)func; |
595 | c896fe29 | bellard | s->helpers[s->nb_helpers].name = name; |
596 | c896fe29 | bellard | s->nb_helpers++; |
597 | c896fe29 | bellard | } |
598 | c896fe29 | bellard | |
599 | 39cf05d3 | bellard | /* Note: we convert the 64 bit args to 32 bit and do some alignment
|
600 | 39cf05d3 | bellard | and endian swap. Maybe it would be better to do the alignment
|
601 | 39cf05d3 | bellard | and endian swap in tcg_reg_alloc_call(). */
|
602 | a7812ae4 | pbrook | void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags, |
603 | a7812ae4 | pbrook | int sizemask, TCGArg ret, int nargs, TCGArg *args) |
604 | c896fe29 | bellard | { |
605 | 568fffe3 | Christophe Fergeau | #if defined(TCG_TARGET_I386) && TCG_TARGET_REG_BITS < 64 |
606 | a7812ae4 | pbrook | int call_type;
|
607 | 9678d950 | Blue Swirl | #endif
|
608 | a7812ae4 | pbrook | int i;
|
609 | a7812ae4 | pbrook | int real_args;
|
610 | a7812ae4 | pbrook | int nb_rets;
|
611 | a7812ae4 | pbrook | TCGArg *nparam; |
612 | 2bece2c8 | Richard Henderson | |
613 | 2bece2c8 | Richard Henderson | #if defined(TCG_TARGET_EXTEND_ARGS) && TCG_TARGET_REG_BITS == 64 |
614 | 2bece2c8 | Richard Henderson | for (i = 0; i < nargs; ++i) { |
615 | 2bece2c8 | Richard Henderson | int is_64bit = sizemask & (1 << (i+1)*2); |
616 | 2bece2c8 | Richard Henderson | int is_signed = sizemask & (2 << (i+1)*2); |
617 | 2bece2c8 | Richard Henderson | if (!is_64bit) {
|
618 | 2bece2c8 | Richard Henderson | TCGv_i64 temp = tcg_temp_new_i64(); |
619 | 2bece2c8 | Richard Henderson | TCGv_i64 orig = MAKE_TCGV_I64(args[i]); |
620 | 2bece2c8 | Richard Henderson | if (is_signed) {
|
621 | 2bece2c8 | Richard Henderson | tcg_gen_ext32s_i64(temp, orig); |
622 | 2bece2c8 | Richard Henderson | } else {
|
623 | 2bece2c8 | Richard Henderson | tcg_gen_ext32u_i64(temp, orig); |
624 | 2bece2c8 | Richard Henderson | } |
625 | 2bece2c8 | Richard Henderson | args[i] = GET_TCGV_I64(temp); |
626 | 2bece2c8 | Richard Henderson | } |
627 | 2bece2c8 | Richard Henderson | } |
628 | 2bece2c8 | Richard Henderson | #endif /* TCG_TARGET_EXTEND_ARGS */ |
629 | 2bece2c8 | Richard Henderson | |
630 | a7812ae4 | pbrook | *gen_opc_ptr++ = INDEX_op_call; |
631 | a7812ae4 | pbrook | nparam = gen_opparam_ptr++; |
632 | 568fffe3 | Christophe Fergeau | #if defined(TCG_TARGET_I386) && TCG_TARGET_REG_BITS < 64 |
633 | a7812ae4 | pbrook | call_type = (flags & TCG_CALL_TYPE_MASK); |
634 | 9678d950 | Blue Swirl | #endif
|
635 | a7812ae4 | pbrook | if (ret != TCG_CALL_DUMMY_ARG) {
|
636 | a7812ae4 | pbrook | #if TCG_TARGET_REG_BITS < 64 |
637 | a7812ae4 | pbrook | if (sizemask & 1) { |
638 | 39cf05d3 | bellard | #ifdef TCG_TARGET_WORDS_BIGENDIAN
|
639 | a7812ae4 | pbrook | *gen_opparam_ptr++ = ret + 1;
|
640 | a7812ae4 | pbrook | *gen_opparam_ptr++ = ret; |
641 | 39cf05d3 | bellard | #else
|
642 | a7812ae4 | pbrook | *gen_opparam_ptr++ = ret; |
643 | a7812ae4 | pbrook | *gen_opparam_ptr++ = ret + 1;
|
644 | 39cf05d3 | bellard | #endif
|
645 | a7812ae4 | pbrook | nb_rets = 2;
|
646 | a7812ae4 | pbrook | } else
|
647 | a7812ae4 | pbrook | #endif
|
648 | a7812ae4 | pbrook | { |
649 | a7812ae4 | pbrook | *gen_opparam_ptr++ = ret; |
650 | a7812ae4 | pbrook | nb_rets = 1;
|
651 | c896fe29 | bellard | } |
652 | a7812ae4 | pbrook | } else {
|
653 | a7812ae4 | pbrook | nb_rets = 0;
|
654 | c896fe29 | bellard | } |
655 | a7812ae4 | pbrook | real_args = 0;
|
656 | a7812ae4 | pbrook | for (i = 0; i < nargs; i++) { |
657 | a7812ae4 | pbrook | #if TCG_TARGET_REG_BITS < 64 |
658 | 2bece2c8 | Richard Henderson | int is_64bit = sizemask & (1 << (i+1)*2); |
659 | 2bece2c8 | Richard Henderson | if (is_64bit) {
|
660 | c896fe29 | bellard | #ifdef TCG_TARGET_I386
|
661 | c896fe29 | bellard | /* REGPARM case: if the third parameter is 64 bit, it is
|
662 | c896fe29 | bellard | allocated on the stack */
|
663 | a7812ae4 | pbrook | if (i == 2 && call_type == TCG_CALL_TYPE_REGPARM) { |
664 | c896fe29 | bellard | call_type = TCG_CALL_TYPE_REGPARM_2; |
665 | c896fe29 | bellard | flags = (flags & ~TCG_CALL_TYPE_MASK) | call_type; |
666 | c896fe29 | bellard | } |
667 | a7812ae4 | pbrook | #endif
|
668 | 39cf05d3 | bellard | #ifdef TCG_TARGET_CALL_ALIGN_ARGS
|
669 | 39cf05d3 | bellard | /* some targets want aligned 64 bit args */
|
670 | ebd486d5 | malc | if (real_args & 1) { |
671 | a7812ae4 | pbrook | *gen_opparam_ptr++ = TCG_CALL_DUMMY_ARG; |
672 | ebd486d5 | malc | real_args++; |
673 | 39cf05d3 | bellard | } |
674 | 39cf05d3 | bellard | #endif
|
675 | 3f90f252 | Richard Henderson | /* If stack grows up, then we will be placing successive
|
676 | 3f90f252 | Richard Henderson | arguments at lower addresses, which means we need to
|
677 | 3f90f252 | Richard Henderson | reverse the order compared to how we would normally
|
678 | 3f90f252 | Richard Henderson | treat either big or little-endian. For those arguments
|
679 | 3f90f252 | Richard Henderson | that will wind up in registers, this still works for
|
680 | 3f90f252 | Richard Henderson | HPPA (the only current STACK_GROWSUP target) since the
|
681 | 3f90f252 | Richard Henderson | argument registers are *also* allocated in decreasing
|
682 | 3f90f252 | Richard Henderson | order. If another such target is added, this logic may
|
683 | 3f90f252 | Richard Henderson | have to get more complicated to differentiate between
|
684 | 3f90f252 | Richard Henderson | stack arguments and register arguments. */
|
685 | 3f90f252 | Richard Henderson | #if defined(TCG_TARGET_WORDS_BIGENDIAN) != defined(TCG_TARGET_STACK_GROWSUP)
|
686 | a7812ae4 | pbrook | *gen_opparam_ptr++ = args[i] + 1;
|
687 | a7812ae4 | pbrook | *gen_opparam_ptr++ = args[i]; |
688 | c896fe29 | bellard | #else
|
689 | a7812ae4 | pbrook | *gen_opparam_ptr++ = args[i]; |
690 | a7812ae4 | pbrook | *gen_opparam_ptr++ = args[i] + 1;
|
691 | c896fe29 | bellard | #endif
|
692 | a7812ae4 | pbrook | real_args += 2;
|
693 | 2bece2c8 | Richard Henderson | continue;
|
694 | c896fe29 | bellard | } |
695 | 2bece2c8 | Richard Henderson | #endif /* TCG_TARGET_REG_BITS < 64 */ |
696 | 2bece2c8 | Richard Henderson | |
697 | 2bece2c8 | Richard Henderson | *gen_opparam_ptr++ = args[i]; |
698 | 2bece2c8 | Richard Henderson | real_args++; |
699 | c896fe29 | bellard | } |
700 | a7812ae4 | pbrook | *gen_opparam_ptr++ = GET_TCGV_PTR(func); |
701 | a7812ae4 | pbrook | |
702 | a7812ae4 | pbrook | *gen_opparam_ptr++ = flags; |
703 | a7812ae4 | pbrook | |
704 | a7812ae4 | pbrook | *nparam = (nb_rets << 16) | (real_args + 1); |
705 | a7812ae4 | pbrook | |
706 | a7812ae4 | pbrook | /* total parameters, needed to go backward in the instruction stream */
|
707 | a7812ae4 | pbrook | *gen_opparam_ptr++ = 1 + nb_rets + real_args + 3; |
708 | 2bece2c8 | Richard Henderson | |
709 | 2bece2c8 | Richard Henderson | #if defined(TCG_TARGET_EXTEND_ARGS) && TCG_TARGET_REG_BITS == 64 |
710 | 2bece2c8 | Richard Henderson | for (i = 0; i < nargs; ++i) { |
711 | 2bece2c8 | Richard Henderson | int is_64bit = sizemask & (1 << (i+1)*2); |
712 | 2bece2c8 | Richard Henderson | if (!is_64bit) {
|
713 | 2bece2c8 | Richard Henderson | TCGv_i64 temp = MAKE_TCGV_I64(args[i]); |
714 | 2bece2c8 | Richard Henderson | tcg_temp_free_i64(temp); |
715 | 2bece2c8 | Richard Henderson | } |
716 | 2bece2c8 | Richard Henderson | } |
717 | 2bece2c8 | Richard Henderson | #endif /* TCG_TARGET_EXTEND_ARGS */ |
718 | c896fe29 | bellard | } |
719 | c896fe29 | bellard | |
720 | ac56dd48 | pbrook | #if TCG_TARGET_REG_BITS == 32 |
721 | a7812ae4 | pbrook | void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
|
722 | c896fe29 | bellard | int c, int right, int arith) |
723 | c896fe29 | bellard | { |
724 | cf60bce4 | bellard | if (c == 0) { |
725 | a7812ae4 | pbrook | tcg_gen_mov_i32(TCGV_LOW(ret), TCGV_LOW(arg1)); |
726 | cf60bce4 | bellard | tcg_gen_mov_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1)); |
727 | cf60bce4 | bellard | } else if (c >= 32) { |
728 | c896fe29 | bellard | c -= 32;
|
729 | c896fe29 | bellard | if (right) {
|
730 | c896fe29 | bellard | if (arith) {
|
731 | a7812ae4 | pbrook | tcg_gen_sari_i32(TCGV_LOW(ret), TCGV_HIGH(arg1), c); |
732 | ac56dd48 | pbrook | tcg_gen_sari_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1), 31);
|
733 | c896fe29 | bellard | } else {
|
734 | a7812ae4 | pbrook | tcg_gen_shri_i32(TCGV_LOW(ret), TCGV_HIGH(arg1), c); |
735 | ac56dd48 | pbrook | tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
|
736 | c896fe29 | bellard | } |
737 | c896fe29 | bellard | } else {
|
738 | a7812ae4 | pbrook | tcg_gen_shli_i32(TCGV_HIGH(ret), TCGV_LOW(arg1), c); |
739 | a7812ae4 | pbrook | tcg_gen_movi_i32(TCGV_LOW(ret), 0);
|
740 | c896fe29 | bellard | } |
741 | c896fe29 | bellard | } else {
|
742 | a7812ae4 | pbrook | TCGv_i32 t0, t1; |
743 | c896fe29 | bellard | |
744 | a7812ae4 | pbrook | t0 = tcg_temp_new_i32(); |
745 | a7812ae4 | pbrook | t1 = tcg_temp_new_i32(); |
746 | c896fe29 | bellard | if (right) {
|
747 | ac56dd48 | pbrook | tcg_gen_shli_i32(t0, TCGV_HIGH(arg1), 32 - c);
|
748 | c896fe29 | bellard | if (arith)
|
749 | ac56dd48 | pbrook | tcg_gen_sari_i32(t1, TCGV_HIGH(arg1), c); |
750 | a7812ae4 | pbrook | else
|
751 | ac56dd48 | pbrook | tcg_gen_shri_i32(t1, TCGV_HIGH(arg1), c); |
752 | a7812ae4 | pbrook | tcg_gen_shri_i32(TCGV_LOW(ret), TCGV_LOW(arg1), c); |
753 | a7812ae4 | pbrook | tcg_gen_or_i32(TCGV_LOW(ret), TCGV_LOW(ret), t0); |
754 | ac56dd48 | pbrook | tcg_gen_mov_i32(TCGV_HIGH(ret), t1); |
755 | c896fe29 | bellard | } else {
|
756 | a7812ae4 | pbrook | tcg_gen_shri_i32(t0, TCGV_LOW(arg1), 32 - c);
|
757 | c896fe29 | bellard | /* Note: ret can be the same as arg1, so we use t1 */
|
758 | a7812ae4 | pbrook | tcg_gen_shli_i32(t1, TCGV_LOW(arg1), c); |
759 | ac56dd48 | pbrook | tcg_gen_shli_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1), c); |
760 | ac56dd48 | pbrook | tcg_gen_or_i32(TCGV_HIGH(ret), TCGV_HIGH(ret), t0); |
761 | a7812ae4 | pbrook | tcg_gen_mov_i32(TCGV_LOW(ret), t1); |
762 | c896fe29 | bellard | } |
763 | a7812ae4 | pbrook | tcg_temp_free_i32(t0); |
764 | a7812ae4 | pbrook | tcg_temp_free_i32(t1); |
765 | c896fe29 | bellard | } |
766 | c896fe29 | bellard | } |
767 | ac56dd48 | pbrook | #endif
|
768 | c896fe29 | bellard | |
769 | be210acb | Richard Henderson | |
770 | 8fcd3692 | blueswir1 | static void tcg_reg_alloc_start(TCGContext *s) |
771 | c896fe29 | bellard | { |
772 | c896fe29 | bellard | int i;
|
773 | c896fe29 | bellard | TCGTemp *ts; |
774 | c896fe29 | bellard | for(i = 0; i < s->nb_globals; i++) { |
775 | c896fe29 | bellard | ts = &s->temps[i]; |
776 | c896fe29 | bellard | if (ts->fixed_reg) {
|
777 | c896fe29 | bellard | ts->val_type = TEMP_VAL_REG; |
778 | c896fe29 | bellard | } else {
|
779 | c896fe29 | bellard | ts->val_type = TEMP_VAL_MEM; |
780 | c896fe29 | bellard | } |
781 | c896fe29 | bellard | } |
782 | e8996ee0 | bellard | for(i = s->nb_globals; i < s->nb_temps; i++) {
|
783 | e8996ee0 | bellard | ts = &s->temps[i]; |
784 | e8996ee0 | bellard | ts->val_type = TEMP_VAL_DEAD; |
785 | e8996ee0 | bellard | ts->mem_allocated = 0;
|
786 | e8996ee0 | bellard | ts->fixed_reg = 0;
|
787 | e8996ee0 | bellard | } |
788 | c896fe29 | bellard | for(i = 0; i < TCG_TARGET_NB_REGS; i++) { |
789 | c896fe29 | bellard | s->reg_to_temp[i] = -1;
|
790 | c896fe29 | bellard | } |
791 | c896fe29 | bellard | } |
792 | c896fe29 | bellard | |
793 | ac56dd48 | pbrook | static char *tcg_get_arg_str_idx(TCGContext *s, char *buf, int buf_size, |
794 | ac56dd48 | pbrook | int idx)
|
795 | c896fe29 | bellard | { |
796 | c896fe29 | bellard | TCGTemp *ts; |
797 | ac56dd48 | pbrook | |
798 | 7f6f0ae5 | Stefan Weil | assert(idx >= 0 && idx < s->nb_temps);
|
799 | ac56dd48 | pbrook | ts = &s->temps[idx]; |
800 | 7f6f0ae5 | Stefan Weil | assert(ts); |
801 | ac56dd48 | pbrook | if (idx < s->nb_globals) {
|
802 | ac56dd48 | pbrook | pstrcpy(buf, buf_size, ts->name); |
803 | c896fe29 | bellard | } else {
|
804 | 641d5fbe | bellard | if (ts->temp_local)
|
805 | 641d5fbe | bellard | snprintf(buf, buf_size, "loc%d", idx - s->nb_globals);
|
806 | 641d5fbe | bellard | else
|
807 | 641d5fbe | bellard | snprintf(buf, buf_size, "tmp%d", idx - s->nb_globals);
|
808 | c896fe29 | bellard | } |
809 | c896fe29 | bellard | return buf;
|
810 | c896fe29 | bellard | } |
811 | c896fe29 | bellard | |
812 | a7812ae4 | pbrook | char *tcg_get_arg_str_i32(TCGContext *s, char *buf, int buf_size, TCGv_i32 arg) |
813 | a7812ae4 | pbrook | { |
814 | a7812ae4 | pbrook | return tcg_get_arg_str_idx(s, buf, buf_size, GET_TCGV_I32(arg));
|
815 | a7812ae4 | pbrook | } |
816 | a7812ae4 | pbrook | |
817 | a7812ae4 | pbrook | char *tcg_get_arg_str_i64(TCGContext *s, char *buf, int buf_size, TCGv_i64 arg) |
818 | ac56dd48 | pbrook | { |
819 | a810a2de | blueswir1 | return tcg_get_arg_str_idx(s, buf, buf_size, GET_TCGV_I64(arg));
|
820 | ac56dd48 | pbrook | } |
821 | ac56dd48 | pbrook | |
822 | e8996ee0 | bellard | static int helper_cmp(const void *p1, const void *p2) |
823 | 4dc81f28 | bellard | { |
824 | e8996ee0 | bellard | const TCGHelperInfo *th1 = p1;
|
825 | e8996ee0 | bellard | const TCGHelperInfo *th2 = p2;
|
826 | e8996ee0 | bellard | if (th1->func < th2->func)
|
827 | e8996ee0 | bellard | return -1; |
828 | e8996ee0 | bellard | else if (th1->func == th2->func) |
829 | e8996ee0 | bellard | return 0; |
830 | e8996ee0 | bellard | else
|
831 | e8996ee0 | bellard | return 1; |
832 | 4dc81f28 | bellard | } |
833 | 4dc81f28 | bellard | |
834 | e8996ee0 | bellard | /* find helper definition (Note: A hash table would be better) */
|
835 | e8996ee0 | bellard | static TCGHelperInfo *tcg_find_helper(TCGContext *s, tcg_target_ulong val)
|
836 | 4dc81f28 | bellard | { |
837 | e8996ee0 | bellard | int m, m_min, m_max;
|
838 | 4dc81f28 | bellard | TCGHelperInfo *th; |
839 | e8996ee0 | bellard | tcg_target_ulong v; |
840 | 4dc81f28 | bellard | |
841 | e8996ee0 | bellard | if (unlikely(!s->helpers_sorted)) {
|
842 | e8996ee0 | bellard | qsort(s->helpers, s->nb_helpers, sizeof(TCGHelperInfo),
|
843 | e8996ee0 | bellard | helper_cmp); |
844 | e8996ee0 | bellard | s->helpers_sorted = 1;
|
845 | e8996ee0 | bellard | } |
846 | e8996ee0 | bellard | |
847 | e8996ee0 | bellard | /* binary search */
|
848 | e8996ee0 | bellard | m_min = 0;
|
849 | e8996ee0 | bellard | m_max = s->nb_helpers - 1;
|
850 | e8996ee0 | bellard | while (m_min <= m_max) {
|
851 | e8996ee0 | bellard | m = (m_min + m_max) >> 1;
|
852 | e8996ee0 | bellard | th = &s->helpers[m]; |
853 | e8996ee0 | bellard | v = th->func; |
854 | e8996ee0 | bellard | if (v == val)
|
855 | e8996ee0 | bellard | return th;
|
856 | e8996ee0 | bellard | else if (val < v) { |
857 | e8996ee0 | bellard | m_max = m - 1;
|
858 | e8996ee0 | bellard | } else {
|
859 | e8996ee0 | bellard | m_min = m + 1;
|
860 | 4dc81f28 | bellard | } |
861 | 4dc81f28 | bellard | } |
862 | e8996ee0 | bellard | return NULL; |
863 | 4dc81f28 | bellard | } |
864 | 4dc81f28 | bellard | |
865 | f48f3ede | blueswir1 | static const char * const cond_name[] = |
866 | f48f3ede | blueswir1 | { |
867 | f48f3ede | blueswir1 | [TCG_COND_EQ] = "eq",
|
868 | f48f3ede | blueswir1 | [TCG_COND_NE] = "ne",
|
869 | f48f3ede | blueswir1 | [TCG_COND_LT] = "lt",
|
870 | f48f3ede | blueswir1 | [TCG_COND_GE] = "ge",
|
871 | f48f3ede | blueswir1 | [TCG_COND_LE] = "le",
|
872 | f48f3ede | blueswir1 | [TCG_COND_GT] = "gt",
|
873 | f48f3ede | blueswir1 | [TCG_COND_LTU] = "ltu",
|
874 | f48f3ede | blueswir1 | [TCG_COND_GEU] = "geu",
|
875 | f48f3ede | blueswir1 | [TCG_COND_LEU] = "leu",
|
876 | f48f3ede | blueswir1 | [TCG_COND_GTU] = "gtu"
|
877 | f48f3ede | blueswir1 | }; |
878 | f48f3ede | blueswir1 | |
879 | c896fe29 | bellard | void tcg_dump_ops(TCGContext *s, FILE *outfile)
|
880 | c896fe29 | bellard | { |
881 | c896fe29 | bellard | const uint16_t *opc_ptr;
|
882 | c896fe29 | bellard | const TCGArg *args;
|
883 | c896fe29 | bellard | TCGArg arg; |
884 | a9751609 | Richard Henderson | TCGOpcode c; |
885 | a9751609 | Richard Henderson | int i, k, nb_oargs, nb_iargs, nb_cargs, first_insn;
|
886 | c896fe29 | bellard | const TCGOpDef *def;
|
887 | c896fe29 | bellard | char buf[128]; |
888 | c896fe29 | bellard | |
889 | 7e4597d7 | bellard | first_insn = 1;
|
890 | c896fe29 | bellard | opc_ptr = gen_opc_buf; |
891 | c896fe29 | bellard | args = gen_opparam_buf; |
892 | c896fe29 | bellard | while (opc_ptr < gen_opc_ptr) {
|
893 | c896fe29 | bellard | c = *opc_ptr++; |
894 | c896fe29 | bellard | def = &tcg_op_defs[c]; |
895 | 7e4597d7 | bellard | if (c == INDEX_op_debug_insn_start) {
|
896 | 7e4597d7 | bellard | uint64_t pc; |
897 | 7e4597d7 | bellard | #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
|
898 | 7e4597d7 | bellard | pc = ((uint64_t)args[1] << 32) | args[0]; |
899 | 7e4597d7 | bellard | #else
|
900 | 7e4597d7 | bellard | pc = args[0];
|
901 | 7e4597d7 | bellard | #endif
|
902 | 7e4597d7 | bellard | if (!first_insn)
|
903 | 7e4597d7 | bellard | fprintf(outfile, "\n");
|
904 | 7e4597d7 | bellard | fprintf(outfile, " ---- 0x%" PRIx64, pc);
|
905 | 7e4597d7 | bellard | first_insn = 0;
|
906 | 7e4597d7 | bellard | nb_oargs = def->nb_oargs; |
907 | 7e4597d7 | bellard | nb_iargs = def->nb_iargs; |
908 | 7e4597d7 | bellard | nb_cargs = def->nb_cargs; |
909 | 7e4597d7 | bellard | } else if (c == INDEX_op_call) { |
910 | c896fe29 | bellard | TCGArg arg; |
911 | 4dc81f28 | bellard | |
912 | c896fe29 | bellard | /* variable number of arguments */
|
913 | c896fe29 | bellard | arg = *args++; |
914 | c896fe29 | bellard | nb_oargs = arg >> 16;
|
915 | c896fe29 | bellard | nb_iargs = arg & 0xffff;
|
916 | c896fe29 | bellard | nb_cargs = def->nb_cargs; |
917 | c896fe29 | bellard | |
918 | 7e4597d7 | bellard | fprintf(outfile, " %s ", def->name);
|
919 | 7e4597d7 | bellard | |
920 | b03cce8e | bellard | /* function name */
|
921 | ac56dd48 | pbrook | fprintf(outfile, "%s",
|
922 | e8996ee0 | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[nb_oargs + nb_iargs - 1])); |
923 | b03cce8e | bellard | /* flags */
|
924 | b03cce8e | bellard | fprintf(outfile, ",$0x%" TCG_PRIlx,
|
925 | b03cce8e | bellard | args[nb_oargs + nb_iargs]); |
926 | b03cce8e | bellard | /* nb out args */
|
927 | b03cce8e | bellard | fprintf(outfile, ",$%d", nb_oargs);
|
928 | b03cce8e | bellard | for(i = 0; i < nb_oargs; i++) { |
929 | b03cce8e | bellard | fprintf(outfile, ",");
|
930 | b03cce8e | bellard | fprintf(outfile, "%s",
|
931 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[i]));
|
932 | b03cce8e | bellard | } |
933 | b03cce8e | bellard | for(i = 0; i < (nb_iargs - 1); i++) { |
934 | c896fe29 | bellard | fprintf(outfile, ",");
|
935 | 39cf05d3 | bellard | if (args[nb_oargs + i] == TCG_CALL_DUMMY_ARG) {
|
936 | 39cf05d3 | bellard | fprintf(outfile, "<dummy>");
|
937 | 39cf05d3 | bellard | } else {
|
938 | 39cf05d3 | bellard | fprintf(outfile, "%s",
|
939 | 39cf05d3 | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[nb_oargs + i]));
|
940 | 39cf05d3 | bellard | } |
941 | b03cce8e | bellard | } |
942 | e8996ee0 | bellard | } else if (c == INDEX_op_movi_i32 |
943 | e8996ee0 | bellard | #if TCG_TARGET_REG_BITS == 64 |
944 | e8996ee0 | bellard | || c == INDEX_op_movi_i64 |
945 | e8996ee0 | bellard | #endif
|
946 | e8996ee0 | bellard | ) { |
947 | e8996ee0 | bellard | tcg_target_ulong val; |
948 | e8996ee0 | bellard | TCGHelperInfo *th; |
949 | e8996ee0 | bellard | |
950 | e8996ee0 | bellard | nb_oargs = def->nb_oargs; |
951 | e8996ee0 | bellard | nb_iargs = def->nb_iargs; |
952 | e8996ee0 | bellard | nb_cargs = def->nb_cargs; |
953 | e8996ee0 | bellard | fprintf(outfile, " %s %s,$", def->name,
|
954 | e8996ee0 | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[0])); |
955 | e8996ee0 | bellard | val = args[1];
|
956 | e8996ee0 | bellard | th = tcg_find_helper(s, val); |
957 | e8996ee0 | bellard | if (th) {
|
958 | 3e9a474e | aurel32 | fprintf(outfile, "%s", th->name);
|
959 | e8996ee0 | bellard | } else {
|
960 | e8996ee0 | bellard | if (c == INDEX_op_movi_i32)
|
961 | e8996ee0 | bellard | fprintf(outfile, "0x%x", (uint32_t)val);
|
962 | e8996ee0 | bellard | else
|
963 | e8996ee0 | bellard | fprintf(outfile, "0x%" PRIx64 , (uint64_t)val);
|
964 | e8996ee0 | bellard | } |
965 | b03cce8e | bellard | } else {
|
966 | 7e4597d7 | bellard | fprintf(outfile, " %s ", def->name);
|
967 | b03cce8e | bellard | if (c == INDEX_op_nopn) {
|
968 | b03cce8e | bellard | /* variable number of arguments */
|
969 | b03cce8e | bellard | nb_cargs = *args; |
970 | b03cce8e | bellard | nb_oargs = 0;
|
971 | b03cce8e | bellard | nb_iargs = 0;
|
972 | b03cce8e | bellard | } else {
|
973 | b03cce8e | bellard | nb_oargs = def->nb_oargs; |
974 | b03cce8e | bellard | nb_iargs = def->nb_iargs; |
975 | b03cce8e | bellard | nb_cargs = def->nb_cargs; |
976 | b03cce8e | bellard | } |
977 | b03cce8e | bellard | |
978 | b03cce8e | bellard | k = 0;
|
979 | b03cce8e | bellard | for(i = 0; i < nb_oargs; i++) { |
980 | b03cce8e | bellard | if (k != 0) |
981 | b03cce8e | bellard | fprintf(outfile, ",");
|
982 | b03cce8e | bellard | fprintf(outfile, "%s",
|
983 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[k++]));
|
984 | b03cce8e | bellard | } |
985 | b03cce8e | bellard | for(i = 0; i < nb_iargs; i++) { |
986 | b03cce8e | bellard | if (k != 0) |
987 | b03cce8e | bellard | fprintf(outfile, ",");
|
988 | b03cce8e | bellard | fprintf(outfile, "%s",
|
989 | b03cce8e | bellard | tcg_get_arg_str_idx(s, buf, sizeof(buf), args[k++]));
|
990 | b03cce8e | bellard | } |
991 | be210acb | Richard Henderson | switch (c) {
|
992 | be210acb | Richard Henderson | case INDEX_op_brcond_i32:
|
993 | be210acb | Richard Henderson | #if TCG_TARGET_REG_BITS == 32 |
994 | be210acb | Richard Henderson | case INDEX_op_brcond2_i32:
|
995 | be210acb | Richard Henderson | #elif TCG_TARGET_REG_BITS == 64 |
996 | be210acb | Richard Henderson | case INDEX_op_brcond_i64:
|
997 | be210acb | Richard Henderson | #endif
|
998 | be210acb | Richard Henderson | case INDEX_op_setcond_i32:
|
999 | f48f3ede | blueswir1 | #if TCG_TARGET_REG_BITS == 32 |
1000 | be210acb | Richard Henderson | case INDEX_op_setcond2_i32:
|
1001 | f48f3ede | blueswir1 | #elif TCG_TARGET_REG_BITS == 64 |
1002 | be210acb | Richard Henderson | case INDEX_op_setcond_i64:
|
1003 | f48f3ede | blueswir1 | #endif
|
1004 | f48f3ede | blueswir1 | if (args[k] < ARRAY_SIZE(cond_name) && cond_name[args[k]])
|
1005 | f48f3ede | blueswir1 | fprintf(outfile, ",%s", cond_name[args[k++]]);
|
1006 | f48f3ede | blueswir1 | else
|
1007 | f48f3ede | blueswir1 | fprintf(outfile, ",$0x%" TCG_PRIlx, args[k++]);
|
1008 | f48f3ede | blueswir1 | i = 1;
|
1009 | be210acb | Richard Henderson | break;
|
1010 | be210acb | Richard Henderson | default:
|
1011 | f48f3ede | blueswir1 | i = 0;
|
1012 | be210acb | Richard Henderson | break;
|
1013 | be210acb | Richard Henderson | } |
1014 | f48f3ede | blueswir1 | for(; i < nb_cargs; i++) {
|
1015 | b03cce8e | bellard | if (k != 0) |
1016 | b03cce8e | bellard | fprintf(outfile, ",");
|
1017 | b03cce8e | bellard | arg = args[k++]; |
1018 | b03cce8e | bellard | fprintf(outfile, "$0x%" TCG_PRIlx, arg);
|
1019 | b03cce8e | bellard | } |
1020 | c896fe29 | bellard | } |
1021 | c896fe29 | bellard | fprintf(outfile, "\n");
|
1022 | c896fe29 | bellard | args += nb_iargs + nb_oargs + nb_cargs; |
1023 | c896fe29 | bellard | } |
1024 | c896fe29 | bellard | } |
1025 | c896fe29 | bellard | |
1026 | c896fe29 | bellard | /* we give more priority to constraints with less registers */
|
1027 | c896fe29 | bellard | static int get_constraint_priority(const TCGOpDef *def, int k) |
1028 | c896fe29 | bellard | { |
1029 | c896fe29 | bellard | const TCGArgConstraint *arg_ct;
|
1030 | c896fe29 | bellard | |
1031 | c896fe29 | bellard | int i, n;
|
1032 | c896fe29 | bellard | arg_ct = &def->args_ct[k]; |
1033 | c896fe29 | bellard | if (arg_ct->ct & TCG_CT_ALIAS) {
|
1034 | c896fe29 | bellard | /* an alias is equivalent to a single register */
|
1035 | c896fe29 | bellard | n = 1;
|
1036 | c896fe29 | bellard | } else {
|
1037 | c896fe29 | bellard | if (!(arg_ct->ct & TCG_CT_REG))
|
1038 | c896fe29 | bellard | return 0; |
1039 | c896fe29 | bellard | n = 0;
|
1040 | c896fe29 | bellard | for(i = 0; i < TCG_TARGET_NB_REGS; i++) { |
1041 | c896fe29 | bellard | if (tcg_regset_test_reg(arg_ct->u.regs, i))
|
1042 | c896fe29 | bellard | n++; |
1043 | c896fe29 | bellard | } |
1044 | c896fe29 | bellard | } |
1045 | c896fe29 | bellard | return TCG_TARGET_NB_REGS - n + 1; |
1046 | c896fe29 | bellard | } |
1047 | c896fe29 | bellard | |
1048 | c896fe29 | bellard | /* sort from highest priority to lowest */
|
1049 | c896fe29 | bellard | static void sort_constraints(TCGOpDef *def, int start, int n) |
1050 | c896fe29 | bellard | { |
1051 | c896fe29 | bellard | int i, j, p1, p2, tmp;
|
1052 | c896fe29 | bellard | |
1053 | c896fe29 | bellard | for(i = 0; i < n; i++) |
1054 | c896fe29 | bellard | def->sorted_args[start + i] = start + i; |
1055 | c896fe29 | bellard | if (n <= 1) |
1056 | c896fe29 | bellard | return;
|
1057 | c896fe29 | bellard | for(i = 0; i < n - 1; i++) { |
1058 | c896fe29 | bellard | for(j = i + 1; j < n; j++) { |
1059 | c896fe29 | bellard | p1 = get_constraint_priority(def, def->sorted_args[start + i]); |
1060 | c896fe29 | bellard | p2 = get_constraint_priority(def, def->sorted_args[start + j]); |
1061 | c896fe29 | bellard | if (p1 < p2) {
|
1062 | c896fe29 | bellard | tmp = def->sorted_args[start + i]; |
1063 | c896fe29 | bellard | def->sorted_args[start + i] = def->sorted_args[start + j]; |
1064 | c896fe29 | bellard | def->sorted_args[start + j] = tmp; |
1065 | c896fe29 | bellard | } |
1066 | c896fe29 | bellard | } |
1067 | c896fe29 | bellard | } |
1068 | c896fe29 | bellard | } |
1069 | c896fe29 | bellard | |
1070 | c896fe29 | bellard | void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs) |
1071 | c896fe29 | bellard | { |
1072 | a9751609 | Richard Henderson | TCGOpcode op; |
1073 | c896fe29 | bellard | TCGOpDef *def; |
1074 | c896fe29 | bellard | const char *ct_str; |
1075 | c896fe29 | bellard | int i, nb_args;
|
1076 | c896fe29 | bellard | |
1077 | c896fe29 | bellard | for(;;) {
|
1078 | a9751609 | Richard Henderson | if (tdefs->op == (TCGOpcode)-1) |
1079 | c896fe29 | bellard | break;
|
1080 | c896fe29 | bellard | op = tdefs->op; |
1081 | c3b08d0e | Stefan Weil | assert((unsigned)op < NB_OPS);
|
1082 | c896fe29 | bellard | def = &tcg_op_defs[op]; |
1083 | c68aaa18 | Stefan Weil | #if defined(CONFIG_DEBUG_TCG)
|
1084 | c68aaa18 | Stefan Weil | /* Duplicate entry in op definitions? */
|
1085 | c68aaa18 | Stefan Weil | assert(!def->used); |
1086 | c68aaa18 | Stefan Weil | def->used = 1;
|
1087 | c68aaa18 | Stefan Weil | #endif
|
1088 | c896fe29 | bellard | nb_args = def->nb_iargs + def->nb_oargs; |
1089 | c896fe29 | bellard | for(i = 0; i < nb_args; i++) { |
1090 | c896fe29 | bellard | ct_str = tdefs->args_ct_str[i]; |
1091 | c68aaa18 | Stefan Weil | /* Incomplete TCGTargetOpDef entry? */
|
1092 | c68aaa18 | Stefan Weil | assert(ct_str != NULL);
|
1093 | c896fe29 | bellard | tcg_regset_clear(def->args_ct[i].u.regs); |
1094 | c896fe29 | bellard | def->args_ct[i].ct = 0;
|
1095 | c896fe29 | bellard | if (ct_str[0] >= '0' && ct_str[0] <= '9') { |
1096 | c896fe29 | bellard | int oarg;
|
1097 | c896fe29 | bellard | oarg = ct_str[0] - '0'; |
1098 | c896fe29 | bellard | assert(oarg < def->nb_oargs); |
1099 | c896fe29 | bellard | assert(def->args_ct[oarg].ct & TCG_CT_REG); |
1100 | c896fe29 | bellard | /* TCG_CT_ALIAS is for the output arguments. The input
|
1101 | 5ff9d6a4 | bellard | argument is tagged with TCG_CT_IALIAS. */
|
1102 | c896fe29 | bellard | def->args_ct[i] = def->args_ct[oarg]; |
1103 | 5ff9d6a4 | bellard | def->args_ct[oarg].ct = TCG_CT_ALIAS; |
1104 | 5ff9d6a4 | bellard | def->args_ct[oarg].alias_index = i; |
1105 | c896fe29 | bellard | def->args_ct[i].ct |= TCG_CT_IALIAS; |
1106 | 5ff9d6a4 | bellard | def->args_ct[i].alias_index = oarg; |
1107 | c896fe29 | bellard | } else {
|
1108 | c896fe29 | bellard | for(;;) {
|
1109 | c896fe29 | bellard | if (*ct_str == '\0') |
1110 | c896fe29 | bellard | break;
|
1111 | c896fe29 | bellard | switch(*ct_str) {
|
1112 | c896fe29 | bellard | case 'i': |
1113 | c896fe29 | bellard | def->args_ct[i].ct |= TCG_CT_CONST; |
1114 | c896fe29 | bellard | ct_str++; |
1115 | c896fe29 | bellard | break;
|
1116 | c896fe29 | bellard | default:
|
1117 | c896fe29 | bellard | if (target_parse_constraint(&def->args_ct[i], &ct_str) < 0) { |
1118 | c896fe29 | bellard | fprintf(stderr, "Invalid constraint '%s' for arg %d of operation '%s'\n",
|
1119 | c896fe29 | bellard | ct_str, i, def->name); |
1120 | c896fe29 | bellard | exit(1);
|
1121 | c896fe29 | bellard | } |
1122 | c896fe29 | bellard | } |
1123 | c896fe29 | bellard | } |
1124 | c896fe29 | bellard | } |
1125 | c896fe29 | bellard | } |
1126 | c896fe29 | bellard | |
1127 | c68aaa18 | Stefan Weil | /* TCGTargetOpDef entry with too much information? */
|
1128 | c68aaa18 | Stefan Weil | assert(i == TCG_MAX_OP_ARGS || tdefs->args_ct_str[i] == NULL);
|
1129 | c68aaa18 | Stefan Weil | |
1130 | c896fe29 | bellard | /* sort the constraints (XXX: this is just an heuristic) */
|
1131 | c896fe29 | bellard | sort_constraints(def, 0, def->nb_oargs);
|
1132 | c896fe29 | bellard | sort_constraints(def, def->nb_oargs, def->nb_iargs); |
1133 | c896fe29 | bellard | |
1134 | c896fe29 | bellard | #if 0
|
1135 | c896fe29 | bellard | {
|
1136 | c896fe29 | bellard | int i;
|
1137 | c896fe29 | bellard | |
1138 | c896fe29 | bellard | printf("%s: sorted=", def->name);
|
1139 | c896fe29 | bellard | for(i = 0; i < def->nb_oargs + def->nb_iargs; i++)
|
1140 | c896fe29 | bellard | printf(" %d", def->sorted_args[i]);
|
1141 | c896fe29 | bellard | printf("\n");
|
1142 | c896fe29 | bellard | }
|
1143 | c896fe29 | bellard | #endif
|
1144 | c896fe29 | bellard | tdefs++; |
1145 | c896fe29 | bellard | } |
1146 | c896fe29 | bellard | |
1147 | c68aaa18 | Stefan Weil | #if defined(CONFIG_DEBUG_TCG)
|
1148 | a9751609 | Richard Henderson | i = 0;
|
1149 | c68aaa18 | Stefan Weil | for (op = 0; op < ARRAY_SIZE(tcg_op_defs); op++) { |
1150 | f412c762 | Richard Henderson | const TCGOpDef *def = &tcg_op_defs[op];
|
1151 | f412c762 | Richard Henderson | if (op < INDEX_op_call
|
1152 | f412c762 | Richard Henderson | || op == INDEX_op_debug_insn_start |
1153 | f412c762 | Richard Henderson | || (def->flags & TCG_OPF_NOT_PRESENT)) { |
1154 | c68aaa18 | Stefan Weil | /* Wrong entry in op definitions? */
|
1155 | f412c762 | Richard Henderson | if (def->used) {
|
1156 | f412c762 | Richard Henderson | fprintf(stderr, "Invalid op definition for %s\n", def->name);
|
1157 | a9751609 | Richard Henderson | i = 1;
|
1158 | a9751609 | Richard Henderson | } |
1159 | c68aaa18 | Stefan Weil | } else {
|
1160 | c68aaa18 | Stefan Weil | /* Missing entry in op definitions? */
|
1161 | f412c762 | Richard Henderson | if (!def->used) {
|
1162 | f412c762 | Richard Henderson | fprintf(stderr, "Missing op definition for %s\n", def->name);
|
1163 | a9751609 | Richard Henderson | i = 1;
|
1164 | a9751609 | Richard Henderson | } |
1165 | c68aaa18 | Stefan Weil | } |
1166 | c68aaa18 | Stefan Weil | } |
1167 | a9751609 | Richard Henderson | if (i == 1) { |
1168 | a9751609 | Richard Henderson | tcg_abort(); |
1169 | a9751609 | Richard Henderson | } |
1170 | c68aaa18 | Stefan Weil | #endif
|
1171 | c896fe29 | bellard | } |
1172 | c896fe29 | bellard | |
1173 | c896fe29 | bellard | #ifdef USE_LIVENESS_ANALYSIS
|
1174 | c896fe29 | bellard | |
1175 | c896fe29 | bellard | /* set a nop for an operation using 'nb_args' */
|
1176 | c896fe29 | bellard | static inline void tcg_set_nop(TCGContext *s, uint16_t *opc_ptr, |
1177 | c896fe29 | bellard | TCGArg *args, int nb_args)
|
1178 | c896fe29 | bellard | { |
1179 | c896fe29 | bellard | if (nb_args == 0) { |
1180 | c896fe29 | bellard | *opc_ptr = INDEX_op_nop; |
1181 | c896fe29 | bellard | } else {
|
1182 | c896fe29 | bellard | *opc_ptr = INDEX_op_nopn; |
1183 | c896fe29 | bellard | args[0] = nb_args;
|
1184 | c896fe29 | bellard | args[nb_args - 1] = nb_args;
|
1185 | c896fe29 | bellard | } |
1186 | c896fe29 | bellard | } |
1187 | c896fe29 | bellard | |
1188 | 641d5fbe | bellard | /* liveness analysis: end of function: globals are live, temps are
|
1189 | 641d5fbe | bellard | dead. */
|
1190 | 641d5fbe | bellard | /* XXX: at this stage, not used as there would be little gains because
|
1191 | 641d5fbe | bellard | most TBs end with a conditional jump. */
|
1192 | 641d5fbe | bellard | static inline void tcg_la_func_end(TCGContext *s, uint8_t *dead_temps) |
1193 | c896fe29 | bellard | { |
1194 | c896fe29 | bellard | memset(dead_temps, 0, s->nb_globals);
|
1195 | c896fe29 | bellard | memset(dead_temps + s->nb_globals, 1, s->nb_temps - s->nb_globals);
|
1196 | c896fe29 | bellard | } |
1197 | c896fe29 | bellard | |
1198 | 641d5fbe | bellard | /* liveness analysis: end of basic block: globals are live, temps are
|
1199 | 641d5fbe | bellard | dead, local temps are live. */
|
1200 | 641d5fbe | bellard | static inline void tcg_la_bb_end(TCGContext *s, uint8_t *dead_temps) |
1201 | 641d5fbe | bellard | { |
1202 | 641d5fbe | bellard | int i;
|
1203 | 641d5fbe | bellard | TCGTemp *ts; |
1204 | 641d5fbe | bellard | |
1205 | 641d5fbe | bellard | memset(dead_temps, 0, s->nb_globals);
|
1206 | 641d5fbe | bellard | ts = &s->temps[s->nb_globals]; |
1207 | 641d5fbe | bellard | for(i = s->nb_globals; i < s->nb_temps; i++) {
|
1208 | 641d5fbe | bellard | if (ts->temp_local)
|
1209 | 641d5fbe | bellard | dead_temps[i] = 0;
|
1210 | 641d5fbe | bellard | else
|
1211 | 641d5fbe | bellard | dead_temps[i] = 1;
|
1212 | 641d5fbe | bellard | ts++; |
1213 | 641d5fbe | bellard | } |
1214 | 641d5fbe | bellard | } |
1215 | 641d5fbe | bellard | |
1216 | 866cb6cb | Aurelien Jarno | /* Liveness analysis : update the opc_dead_args array to tell if a
|
1217 | c896fe29 | bellard | given input arguments is dead. Instructions updating dead
|
1218 | c896fe29 | bellard | temporaries are removed. */
|
1219 | 8fcd3692 | blueswir1 | static void tcg_liveness_analysis(TCGContext *s) |
1220 | c896fe29 | bellard | { |
1221 | a9751609 | Richard Henderson | int i, op_index, nb_args, nb_iargs, nb_oargs, arg, nb_ops;
|
1222 | a9751609 | Richard Henderson | TCGOpcode op; |
1223 | c896fe29 | bellard | TCGArg *args; |
1224 | c896fe29 | bellard | const TCGOpDef *def;
|
1225 | c896fe29 | bellard | uint8_t *dead_temps; |
1226 | 866cb6cb | Aurelien Jarno | unsigned int dead_args; |
1227 | c896fe29 | bellard | |
1228 | c896fe29 | bellard | gen_opc_ptr++; /* skip end */
|
1229 | c896fe29 | bellard | |
1230 | c896fe29 | bellard | nb_ops = gen_opc_ptr - gen_opc_buf; |
1231 | c896fe29 | bellard | |
1232 | 866cb6cb | Aurelien Jarno | s->op_dead_args = tcg_malloc(nb_ops * sizeof(uint16_t));
|
1233 | c896fe29 | bellard | |
1234 | c896fe29 | bellard | dead_temps = tcg_malloc(s->nb_temps); |
1235 | c896fe29 | bellard | memset(dead_temps, 1, s->nb_temps);
|
1236 | c896fe29 | bellard | |
1237 | c896fe29 | bellard | args = gen_opparam_ptr; |
1238 | c896fe29 | bellard | op_index = nb_ops - 1;
|
1239 | c896fe29 | bellard | while (op_index >= 0) { |
1240 | c896fe29 | bellard | op = gen_opc_buf[op_index]; |
1241 | c896fe29 | bellard | def = &tcg_op_defs[op]; |
1242 | c896fe29 | bellard | switch(op) {
|
1243 | c896fe29 | bellard | case INDEX_op_call:
|
1244 | c6e113f5 | bellard | { |
1245 | c6e113f5 | bellard | int call_flags;
|
1246 | c896fe29 | bellard | |
1247 | c6e113f5 | bellard | nb_args = args[-1];
|
1248 | c6e113f5 | bellard | args -= nb_args; |
1249 | c6e113f5 | bellard | nb_iargs = args[0] & 0xffff; |
1250 | c6e113f5 | bellard | nb_oargs = args[0] >> 16; |
1251 | c6e113f5 | bellard | args++; |
1252 | c6e113f5 | bellard | call_flags = args[nb_oargs + nb_iargs]; |
1253 | c6e113f5 | bellard | |
1254 | c6e113f5 | bellard | /* pure functions can be removed if their result is not
|
1255 | c6e113f5 | bellard | used */
|
1256 | c6e113f5 | bellard | if (call_flags & TCG_CALL_PURE) {
|
1257 | c6e113f5 | bellard | for(i = 0; i < nb_oargs; i++) { |
1258 | c6e113f5 | bellard | arg = args[i]; |
1259 | c6e113f5 | bellard | if (!dead_temps[arg])
|
1260 | c6e113f5 | bellard | goto do_not_remove_call;
|
1261 | c6e113f5 | bellard | } |
1262 | c6e113f5 | bellard | tcg_set_nop(s, gen_opc_buf + op_index, |
1263 | c6e113f5 | bellard | args - 1, nb_args);
|
1264 | c6e113f5 | bellard | } else {
|
1265 | c6e113f5 | bellard | do_not_remove_call:
|
1266 | c896fe29 | bellard | |
1267 | c6e113f5 | bellard | /* output args are dead */
|
1268 | 6b64b624 | Aurelien Jarno | dead_args = 0;
|
1269 | c6e113f5 | bellard | for(i = 0; i < nb_oargs; i++) { |
1270 | c6e113f5 | bellard | arg = args[i]; |
1271 | 6b64b624 | Aurelien Jarno | if (dead_temps[arg]) {
|
1272 | 6b64b624 | Aurelien Jarno | dead_args |= (1 << i);
|
1273 | 6b64b624 | Aurelien Jarno | } |
1274 | c6e113f5 | bellard | dead_temps[arg] = 1;
|
1275 | c6e113f5 | bellard | } |
1276 | c6e113f5 | bellard | |
1277 | b9c18f56 | aurel32 | if (!(call_flags & TCG_CALL_CONST)) {
|
1278 | b9c18f56 | aurel32 | /* globals are live (they may be used by the call) */
|
1279 | b9c18f56 | aurel32 | memset(dead_temps, 0, s->nb_globals);
|
1280 | b9c18f56 | aurel32 | } |
1281 | b9c18f56 | aurel32 | |
1282 | c6e113f5 | bellard | /* input args are live */
|
1283 | 866cb6cb | Aurelien Jarno | for(i = nb_oargs; i < nb_iargs + nb_oargs; i++) {
|
1284 | 866cb6cb | Aurelien Jarno | arg = args[i]; |
1285 | 39cf05d3 | bellard | if (arg != TCG_CALL_DUMMY_ARG) {
|
1286 | 39cf05d3 | bellard | if (dead_temps[arg]) {
|
1287 | 866cb6cb | Aurelien Jarno | dead_args |= (1 << i);
|
1288 | 39cf05d3 | bellard | } |
1289 | 39cf05d3 | bellard | dead_temps[arg] = 0;
|
1290 | c6e113f5 | bellard | } |
1291 | c6e113f5 | bellard | } |
1292 | 866cb6cb | Aurelien Jarno | s->op_dead_args[op_index] = dead_args; |
1293 | c896fe29 | bellard | } |
1294 | c6e113f5 | bellard | args--; |
1295 | c896fe29 | bellard | } |
1296 | c896fe29 | bellard | break;
|
1297 | c896fe29 | bellard | case INDEX_op_set_label:
|
1298 | c896fe29 | bellard | args--; |
1299 | c896fe29 | bellard | /* mark end of basic block */
|
1300 | c896fe29 | bellard | tcg_la_bb_end(s, dead_temps); |
1301 | c896fe29 | bellard | break;
|
1302 | 7e4597d7 | bellard | case INDEX_op_debug_insn_start:
|
1303 | 7e4597d7 | bellard | args -= def->nb_args; |
1304 | 7e4597d7 | bellard | break;
|
1305 | c896fe29 | bellard | case INDEX_op_nopn:
|
1306 | c896fe29 | bellard | nb_args = args[-1];
|
1307 | c896fe29 | bellard | args -= nb_args; |
1308 | c896fe29 | bellard | break;
|
1309 | 5ff9d6a4 | bellard | case INDEX_op_discard:
|
1310 | 5ff9d6a4 | bellard | args--; |
1311 | 5ff9d6a4 | bellard | /* mark the temporary as dead */
|
1312 | 5ff9d6a4 | bellard | dead_temps[args[0]] = 1; |
1313 | 5ff9d6a4 | bellard | break;
|
1314 | c896fe29 | bellard | case INDEX_op_end:
|
1315 | c896fe29 | bellard | break;
|
1316 | c896fe29 | bellard | /* XXX: optimize by hardcoding common cases (e.g. triadic ops) */
|
1317 | c896fe29 | bellard | default:
|
1318 | 49516bc0 | aurel32 | args -= def->nb_args; |
1319 | 49516bc0 | aurel32 | nb_iargs = def->nb_iargs; |
1320 | 49516bc0 | aurel32 | nb_oargs = def->nb_oargs; |
1321 | c896fe29 | bellard | |
1322 | 49516bc0 | aurel32 | /* Test if the operation can be removed because all
|
1323 | 49516bc0 | aurel32 | its outputs are dead. We assume that nb_oargs == 0
|
1324 | 49516bc0 | aurel32 | implies side effects */
|
1325 | 49516bc0 | aurel32 | if (!(def->flags & TCG_OPF_SIDE_EFFECTS) && nb_oargs != 0) { |
1326 | 49516bc0 | aurel32 | for(i = 0; i < nb_oargs; i++) { |
1327 | 49516bc0 | aurel32 | arg = args[i]; |
1328 | 49516bc0 | aurel32 | if (!dead_temps[arg])
|
1329 | 49516bc0 | aurel32 | goto do_not_remove;
|
1330 | 49516bc0 | aurel32 | } |
1331 | 49516bc0 | aurel32 | tcg_set_nop(s, gen_opc_buf + op_index, args, def->nb_args); |
1332 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
1333 | 49516bc0 | aurel32 | s->del_op_count++; |
1334 | c896fe29 | bellard | #endif
|
1335 | 49516bc0 | aurel32 | } else {
|
1336 | 49516bc0 | aurel32 | do_not_remove:
|
1337 | c896fe29 | bellard | |
1338 | 49516bc0 | aurel32 | /* output args are dead */
|
1339 | 6b64b624 | Aurelien Jarno | dead_args = 0;
|
1340 | 49516bc0 | aurel32 | for(i = 0; i < nb_oargs; i++) { |
1341 | 49516bc0 | aurel32 | arg = args[i]; |
1342 | 6b64b624 | Aurelien Jarno | if (dead_temps[arg]) {
|
1343 | 6b64b624 | Aurelien Jarno | dead_args |= (1 << i);
|
1344 | 6b64b624 | Aurelien Jarno | } |
1345 | 49516bc0 | aurel32 | dead_temps[arg] = 1;
|
1346 | 49516bc0 | aurel32 | } |
1347 | 49516bc0 | aurel32 | |
1348 | 49516bc0 | aurel32 | /* if end of basic block, update */
|
1349 | 49516bc0 | aurel32 | if (def->flags & TCG_OPF_BB_END) {
|
1350 | 49516bc0 | aurel32 | tcg_la_bb_end(s, dead_temps); |
1351 | 49516bc0 | aurel32 | } else if (def->flags & TCG_OPF_CALL_CLOBBER) { |
1352 | 49516bc0 | aurel32 | /* globals are live */
|
1353 | 49516bc0 | aurel32 | memset(dead_temps, 0, s->nb_globals);
|
1354 | 49516bc0 | aurel32 | } |
1355 | 49516bc0 | aurel32 | |
1356 | 49516bc0 | aurel32 | /* input args are live */
|
1357 | 866cb6cb | Aurelien Jarno | for(i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
|
1358 | 866cb6cb | Aurelien Jarno | arg = args[i]; |
1359 | 49516bc0 | aurel32 | if (dead_temps[arg]) {
|
1360 | 866cb6cb | Aurelien Jarno | dead_args |= (1 << i);
|
1361 | c896fe29 | bellard | } |
1362 | 49516bc0 | aurel32 | dead_temps[arg] = 0;
|
1363 | c896fe29 | bellard | } |
1364 | 866cb6cb | Aurelien Jarno | s->op_dead_args[op_index] = dead_args; |
1365 | c896fe29 | bellard | } |
1366 | c896fe29 | bellard | break;
|
1367 | c896fe29 | bellard | } |
1368 | c896fe29 | bellard | op_index--; |
1369 | c896fe29 | bellard | } |
1370 | c896fe29 | bellard | |
1371 | c896fe29 | bellard | if (args != gen_opparam_buf)
|
1372 | c896fe29 | bellard | tcg_abort(); |
1373 | c896fe29 | bellard | } |
1374 | c896fe29 | bellard | #else
|
1375 | c896fe29 | bellard | /* dummy liveness analysis */
|
1376 | 655feed5 | malc | static void tcg_liveness_analysis(TCGContext *s) |
1377 | c896fe29 | bellard | { |
1378 | c896fe29 | bellard | int nb_ops;
|
1379 | c896fe29 | bellard | nb_ops = gen_opc_ptr - gen_opc_buf; |
1380 | c896fe29 | bellard | |
1381 | 866cb6cb | Aurelien Jarno | s->op_dead_args = tcg_malloc(nb_ops * sizeof(uint16_t));
|
1382 | 866cb6cb | Aurelien Jarno | memset(s->op_dead_args, 0, nb_ops * sizeof(uint16_t)); |
1383 | c896fe29 | bellard | } |
1384 | c896fe29 | bellard | #endif
|
1385 | c896fe29 | bellard | |
1386 | c896fe29 | bellard | #ifndef NDEBUG
|
1387 | c896fe29 | bellard | static void dump_regs(TCGContext *s) |
1388 | c896fe29 | bellard | { |
1389 | c896fe29 | bellard | TCGTemp *ts; |
1390 | c896fe29 | bellard | int i;
|
1391 | c896fe29 | bellard | char buf[64]; |
1392 | c896fe29 | bellard | |
1393 | c896fe29 | bellard | for(i = 0; i < s->nb_temps; i++) { |
1394 | c896fe29 | bellard | ts = &s->temps[i]; |
1395 | ac56dd48 | pbrook | printf(" %10s: ", tcg_get_arg_str_idx(s, buf, sizeof(buf), i)); |
1396 | c896fe29 | bellard | switch(ts->val_type) {
|
1397 | c896fe29 | bellard | case TEMP_VAL_REG:
|
1398 | c896fe29 | bellard | printf("%s", tcg_target_reg_names[ts->reg]);
|
1399 | c896fe29 | bellard | break;
|
1400 | c896fe29 | bellard | case TEMP_VAL_MEM:
|
1401 | c896fe29 | bellard | printf("%d(%s)", (int)ts->mem_offset, tcg_target_reg_names[ts->mem_reg]); |
1402 | c896fe29 | bellard | break;
|
1403 | c896fe29 | bellard | case TEMP_VAL_CONST:
|
1404 | c896fe29 | bellard | printf("$0x%" TCG_PRIlx, ts->val);
|
1405 | c896fe29 | bellard | break;
|
1406 | c896fe29 | bellard | case TEMP_VAL_DEAD:
|
1407 | c896fe29 | bellard | printf("D");
|
1408 | c896fe29 | bellard | break;
|
1409 | c896fe29 | bellard | default:
|
1410 | c896fe29 | bellard | printf("???");
|
1411 | c896fe29 | bellard | break;
|
1412 | c896fe29 | bellard | } |
1413 | c896fe29 | bellard | printf("\n");
|
1414 | c896fe29 | bellard | } |
1415 | c896fe29 | bellard | |
1416 | c896fe29 | bellard | for(i = 0; i < TCG_TARGET_NB_REGS; i++) { |
1417 | c896fe29 | bellard | if (s->reg_to_temp[i] >= 0) { |
1418 | c896fe29 | bellard | printf("%s: %s\n",
|
1419 | c896fe29 | bellard | tcg_target_reg_names[i], |
1420 | ac56dd48 | pbrook | tcg_get_arg_str_idx(s, buf, sizeof(buf), s->reg_to_temp[i]));
|
1421 | c896fe29 | bellard | } |
1422 | c896fe29 | bellard | } |
1423 | c896fe29 | bellard | } |
1424 | c896fe29 | bellard | |
1425 | c896fe29 | bellard | static void check_regs(TCGContext *s) |
1426 | c896fe29 | bellard | { |
1427 | c896fe29 | bellard | int reg, k;
|
1428 | c896fe29 | bellard | TCGTemp *ts; |
1429 | c896fe29 | bellard | char buf[64]; |
1430 | c896fe29 | bellard | |
1431 | c896fe29 | bellard | for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) { |
1432 | c896fe29 | bellard | k = s->reg_to_temp[reg]; |
1433 | c896fe29 | bellard | if (k >= 0) { |
1434 | c896fe29 | bellard | ts = &s->temps[k]; |
1435 | c896fe29 | bellard | if (ts->val_type != TEMP_VAL_REG ||
|
1436 | c896fe29 | bellard | ts->reg != reg) { |
1437 | c896fe29 | bellard | printf("Inconsistency for register %s:\n",
|
1438 | c896fe29 | bellard | tcg_target_reg_names[reg]); |
1439 | b03cce8e | bellard | goto fail;
|
1440 | c896fe29 | bellard | } |
1441 | c896fe29 | bellard | } |
1442 | c896fe29 | bellard | } |
1443 | c896fe29 | bellard | for(k = 0; k < s->nb_temps; k++) { |
1444 | c896fe29 | bellard | ts = &s->temps[k]; |
1445 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG &&
|
1446 | c896fe29 | bellard | !ts->fixed_reg && |
1447 | c896fe29 | bellard | s->reg_to_temp[ts->reg] != k) { |
1448 | c896fe29 | bellard | printf("Inconsistency for temp %s:\n",
|
1449 | ac56dd48 | pbrook | tcg_get_arg_str_idx(s, buf, sizeof(buf), k));
|
1450 | b03cce8e | bellard | fail:
|
1451 | c896fe29 | bellard | printf("reg state:\n");
|
1452 | c896fe29 | bellard | dump_regs(s); |
1453 | c896fe29 | bellard | tcg_abort(); |
1454 | c896fe29 | bellard | } |
1455 | c896fe29 | bellard | } |
1456 | c896fe29 | bellard | } |
1457 | c896fe29 | bellard | #endif
|
1458 | c896fe29 | bellard | |
1459 | c896fe29 | bellard | static void temp_allocate_frame(TCGContext *s, int temp) |
1460 | c896fe29 | bellard | { |
1461 | c896fe29 | bellard | TCGTemp *ts; |
1462 | c896fe29 | bellard | ts = &s->temps[temp]; |
1463 | f44c9960 | Blue Swirl | #ifndef __sparc_v9__ /* Sparc64 stack is accessed with offset of 2047 */ |
1464 | b591dc59 | Blue Swirl | s->current_frame_offset = (s->current_frame_offset + |
1465 | b591dc59 | Blue Swirl | (tcg_target_long)sizeof(tcg_target_long) - 1) & |
1466 | b591dc59 | Blue Swirl | ~(sizeof(tcg_target_long) - 1); |
1467 | f44c9960 | Blue Swirl | #endif
|
1468 | b591dc59 | Blue Swirl | if (s->current_frame_offset + (tcg_target_long)sizeof(tcg_target_long) > |
1469 | b591dc59 | Blue Swirl | s->frame_end) { |
1470 | 5ff9d6a4 | bellard | tcg_abort(); |
1471 | b591dc59 | Blue Swirl | } |
1472 | c896fe29 | bellard | ts->mem_offset = s->current_frame_offset; |
1473 | c896fe29 | bellard | ts->mem_reg = s->frame_reg; |
1474 | c896fe29 | bellard | ts->mem_allocated = 1;
|
1475 | b591dc59 | Blue Swirl | s->current_frame_offset += (tcg_target_long)sizeof(tcg_target_long);
|
1476 | c896fe29 | bellard | } |
1477 | c896fe29 | bellard | |
1478 | c896fe29 | bellard | /* free register 'reg' by spilling the corresponding temporary if necessary */
|
1479 | c896fe29 | bellard | static void tcg_reg_free(TCGContext *s, int reg) |
1480 | c896fe29 | bellard | { |
1481 | c896fe29 | bellard | TCGTemp *ts; |
1482 | c896fe29 | bellard | int temp;
|
1483 | c896fe29 | bellard | |
1484 | c896fe29 | bellard | temp = s->reg_to_temp[reg]; |
1485 | c896fe29 | bellard | if (temp != -1) { |
1486 | c896fe29 | bellard | ts = &s->temps[temp]; |
1487 | c896fe29 | bellard | assert(ts->val_type == TEMP_VAL_REG); |
1488 | c896fe29 | bellard | if (!ts->mem_coherent) {
|
1489 | c896fe29 | bellard | if (!ts->mem_allocated)
|
1490 | c896fe29 | bellard | temp_allocate_frame(s, temp); |
1491 | e4d5434c | blueswir1 | tcg_out_st(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1492 | c896fe29 | bellard | } |
1493 | c896fe29 | bellard | ts->val_type = TEMP_VAL_MEM; |
1494 | c896fe29 | bellard | s->reg_to_temp[reg] = -1;
|
1495 | c896fe29 | bellard | } |
1496 | c896fe29 | bellard | } |
1497 | c896fe29 | bellard | |
1498 | c896fe29 | bellard | /* Allocate a register belonging to reg1 & ~reg2 */
|
1499 | c896fe29 | bellard | static int tcg_reg_alloc(TCGContext *s, TCGRegSet reg1, TCGRegSet reg2) |
1500 | c896fe29 | bellard | { |
1501 | c896fe29 | bellard | int i, reg;
|
1502 | c896fe29 | bellard | TCGRegSet reg_ct; |
1503 | c896fe29 | bellard | |
1504 | c896fe29 | bellard | tcg_regset_andnot(reg_ct, reg1, reg2); |
1505 | c896fe29 | bellard | |
1506 | c896fe29 | bellard | /* first try free registers */
|
1507 | 0954d0d9 | blueswir1 | for(i = 0; i < ARRAY_SIZE(tcg_target_reg_alloc_order); i++) { |
1508 | c896fe29 | bellard | reg = tcg_target_reg_alloc_order[i]; |
1509 | c896fe29 | bellard | if (tcg_regset_test_reg(reg_ct, reg) && s->reg_to_temp[reg] == -1) |
1510 | c896fe29 | bellard | return reg;
|
1511 | c896fe29 | bellard | } |
1512 | c896fe29 | bellard | |
1513 | c896fe29 | bellard | /* XXX: do better spill choice */
|
1514 | 0954d0d9 | blueswir1 | for(i = 0; i < ARRAY_SIZE(tcg_target_reg_alloc_order); i++) { |
1515 | c896fe29 | bellard | reg = tcg_target_reg_alloc_order[i]; |
1516 | c896fe29 | bellard | if (tcg_regset_test_reg(reg_ct, reg)) {
|
1517 | c896fe29 | bellard | tcg_reg_free(s, reg); |
1518 | c896fe29 | bellard | return reg;
|
1519 | c896fe29 | bellard | } |
1520 | c896fe29 | bellard | } |
1521 | c896fe29 | bellard | |
1522 | c896fe29 | bellard | tcg_abort(); |
1523 | c896fe29 | bellard | } |
1524 | c896fe29 | bellard | |
1525 | 641d5fbe | bellard | /* save a temporary to memory. 'allocated_regs' is used in case a
|
1526 | 641d5fbe | bellard | temporary registers needs to be allocated to store a constant. */
|
1527 | 641d5fbe | bellard | static void temp_save(TCGContext *s, int temp, TCGRegSet allocated_regs) |
1528 | 641d5fbe | bellard | { |
1529 | 641d5fbe | bellard | TCGTemp *ts; |
1530 | 641d5fbe | bellard | int reg;
|
1531 | 641d5fbe | bellard | |
1532 | 641d5fbe | bellard | ts = &s->temps[temp]; |
1533 | 641d5fbe | bellard | if (!ts->fixed_reg) {
|
1534 | 641d5fbe | bellard | switch(ts->val_type) {
|
1535 | 641d5fbe | bellard | case TEMP_VAL_REG:
|
1536 | 641d5fbe | bellard | tcg_reg_free(s, ts->reg); |
1537 | 641d5fbe | bellard | break;
|
1538 | 641d5fbe | bellard | case TEMP_VAL_DEAD:
|
1539 | 641d5fbe | bellard | ts->val_type = TEMP_VAL_MEM; |
1540 | 641d5fbe | bellard | break;
|
1541 | 641d5fbe | bellard | case TEMP_VAL_CONST:
|
1542 | d6859202 | Aurelien Jarno | reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type], |
1543 | d6859202 | Aurelien Jarno | allocated_regs); |
1544 | 641d5fbe | bellard | if (!ts->mem_allocated)
|
1545 | 641d5fbe | bellard | temp_allocate_frame(s, temp); |
1546 | d6859202 | Aurelien Jarno | tcg_out_movi(s, ts->type, reg, ts->val); |
1547 | d6859202 | Aurelien Jarno | tcg_out_st(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1548 | 641d5fbe | bellard | ts->val_type = TEMP_VAL_MEM; |
1549 | 641d5fbe | bellard | break;
|
1550 | 641d5fbe | bellard | case TEMP_VAL_MEM:
|
1551 | 641d5fbe | bellard | break;
|
1552 | 641d5fbe | bellard | default:
|
1553 | 641d5fbe | bellard | tcg_abort(); |
1554 | 641d5fbe | bellard | } |
1555 | 641d5fbe | bellard | } |
1556 | 641d5fbe | bellard | } |
1557 | 641d5fbe | bellard | |
1558 | 9814dd27 | Dong Xu Wang | /* save globals to their canonical location and assume they can be
|
1559 | e8996ee0 | bellard | modified be the following code. 'allocated_regs' is used in case a
|
1560 | e8996ee0 | bellard | temporary registers needs to be allocated to store a constant. */
|
1561 | e8996ee0 | bellard | static void save_globals(TCGContext *s, TCGRegSet allocated_regs) |
1562 | c896fe29 | bellard | { |
1563 | 641d5fbe | bellard | int i;
|
1564 | c896fe29 | bellard | |
1565 | c896fe29 | bellard | for(i = 0; i < s->nb_globals; i++) { |
1566 | 641d5fbe | bellard | temp_save(s, i, allocated_regs); |
1567 | c896fe29 | bellard | } |
1568 | e5097dc8 | bellard | } |
1569 | e5097dc8 | bellard | |
1570 | e5097dc8 | bellard | /* at the end of a basic block, we assume all temporaries are dead and
|
1571 | e8996ee0 | bellard | all globals are stored at their canonical location. */
|
1572 | e8996ee0 | bellard | static void tcg_reg_alloc_bb_end(TCGContext *s, TCGRegSet allocated_regs) |
1573 | e5097dc8 | bellard | { |
1574 | e5097dc8 | bellard | TCGTemp *ts; |
1575 | e5097dc8 | bellard | int i;
|
1576 | e5097dc8 | bellard | |
1577 | c896fe29 | bellard | for(i = s->nb_globals; i < s->nb_temps; i++) {
|
1578 | c896fe29 | bellard | ts = &s->temps[i]; |
1579 | 641d5fbe | bellard | if (ts->temp_local) {
|
1580 | 641d5fbe | bellard | temp_save(s, i, allocated_regs); |
1581 | 641d5fbe | bellard | } else {
|
1582 | 641d5fbe | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1583 | 641d5fbe | bellard | s->reg_to_temp[ts->reg] = -1;
|
1584 | 641d5fbe | bellard | } |
1585 | 641d5fbe | bellard | ts->val_type = TEMP_VAL_DEAD; |
1586 | c896fe29 | bellard | } |
1587 | c896fe29 | bellard | } |
1588 | e8996ee0 | bellard | |
1589 | e8996ee0 | bellard | save_globals(s, allocated_regs); |
1590 | c896fe29 | bellard | } |
1591 | c896fe29 | bellard | |
1592 | 866cb6cb | Aurelien Jarno | #define IS_DEAD_ARG(n) ((dead_args >> (n)) & 1) |
1593 | c896fe29 | bellard | |
1594 | e8996ee0 | bellard | static void tcg_reg_alloc_movi(TCGContext *s, const TCGArg *args) |
1595 | e8996ee0 | bellard | { |
1596 | e8996ee0 | bellard | TCGTemp *ots; |
1597 | e8996ee0 | bellard | tcg_target_ulong val; |
1598 | e8996ee0 | bellard | |
1599 | e8996ee0 | bellard | ots = &s->temps[args[0]];
|
1600 | e8996ee0 | bellard | val = args[1];
|
1601 | e8996ee0 | bellard | |
1602 | e8996ee0 | bellard | if (ots->fixed_reg) {
|
1603 | e8996ee0 | bellard | /* for fixed registers, we do not do any constant
|
1604 | e8996ee0 | bellard | propagation */
|
1605 | e8996ee0 | bellard | tcg_out_movi(s, ots->type, ots->reg, val); |
1606 | e8996ee0 | bellard | } else {
|
1607 | 1235fc06 | ths | /* The movi is not explicitly generated here */
|
1608 | e8996ee0 | bellard | if (ots->val_type == TEMP_VAL_REG)
|
1609 | e8996ee0 | bellard | s->reg_to_temp[ots->reg] = -1;
|
1610 | e8996ee0 | bellard | ots->val_type = TEMP_VAL_CONST; |
1611 | e8996ee0 | bellard | ots->val = val; |
1612 | e8996ee0 | bellard | } |
1613 | e8996ee0 | bellard | } |
1614 | e8996ee0 | bellard | |
1615 | c896fe29 | bellard | static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def, |
1616 | c896fe29 | bellard | const TCGArg *args,
|
1617 | 866cb6cb | Aurelien Jarno | unsigned int dead_args) |
1618 | c896fe29 | bellard | { |
1619 | c896fe29 | bellard | TCGTemp *ts, *ots; |
1620 | c896fe29 | bellard | int reg;
|
1621 | c896fe29 | bellard | const TCGArgConstraint *arg_ct;
|
1622 | c896fe29 | bellard | |
1623 | c896fe29 | bellard | ots = &s->temps[args[0]];
|
1624 | c896fe29 | bellard | ts = &s->temps[args[1]];
|
1625 | c896fe29 | bellard | arg_ct = &def->args_ct[0];
|
1626 | c896fe29 | bellard | |
1627 | 866cb6cb | Aurelien Jarno | /* XXX: always mark arg dead if IS_DEAD_ARG(1) */
|
1628 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1629 | 866cb6cb | Aurelien Jarno | if (IS_DEAD_ARG(1) && !ts->fixed_reg && !ots->fixed_reg) { |
1630 | c896fe29 | bellard | /* the mov can be suppressed */
|
1631 | c896fe29 | bellard | if (ots->val_type == TEMP_VAL_REG)
|
1632 | c896fe29 | bellard | s->reg_to_temp[ots->reg] = -1;
|
1633 | c896fe29 | bellard | reg = ts->reg; |
1634 | c896fe29 | bellard | s->reg_to_temp[reg] = -1;
|
1635 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
1636 | c896fe29 | bellard | } else {
|
1637 | c896fe29 | bellard | if (ots->val_type == TEMP_VAL_REG) {
|
1638 | c896fe29 | bellard | reg = ots->reg; |
1639 | c896fe29 | bellard | } else {
|
1640 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs); |
1641 | c896fe29 | bellard | } |
1642 | c896fe29 | bellard | if (ts->reg != reg) {
|
1643 | 3b6dac34 | Richard Henderson | tcg_out_mov(s, ots->type, reg, ts->reg); |
1644 | c896fe29 | bellard | } |
1645 | c896fe29 | bellard | } |
1646 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_MEM) { |
1647 | c896fe29 | bellard | if (ots->val_type == TEMP_VAL_REG) {
|
1648 | c896fe29 | bellard | reg = ots->reg; |
1649 | c896fe29 | bellard | } else {
|
1650 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs); |
1651 | c896fe29 | bellard | } |
1652 | e4d5434c | blueswir1 | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1653 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1654 | e8996ee0 | bellard | if (ots->fixed_reg) {
|
1655 | c896fe29 | bellard | reg = ots->reg; |
1656 | e8996ee0 | bellard | tcg_out_movi(s, ots->type, reg, ts->val); |
1657 | c896fe29 | bellard | } else {
|
1658 | e8996ee0 | bellard | /* propagate constant */
|
1659 | e8996ee0 | bellard | if (ots->val_type == TEMP_VAL_REG)
|
1660 | e8996ee0 | bellard | s->reg_to_temp[ots->reg] = -1;
|
1661 | e8996ee0 | bellard | ots->val_type = TEMP_VAL_CONST; |
1662 | e8996ee0 | bellard | ots->val = ts->val; |
1663 | e8996ee0 | bellard | return;
|
1664 | c896fe29 | bellard | } |
1665 | c896fe29 | bellard | } else {
|
1666 | c896fe29 | bellard | tcg_abort(); |
1667 | c896fe29 | bellard | } |
1668 | c896fe29 | bellard | s->reg_to_temp[reg] = args[0];
|
1669 | c896fe29 | bellard | ots->reg = reg; |
1670 | c896fe29 | bellard | ots->val_type = TEMP_VAL_REG; |
1671 | c896fe29 | bellard | ots->mem_coherent = 0;
|
1672 | c896fe29 | bellard | } |
1673 | c896fe29 | bellard | |
1674 | c896fe29 | bellard | static void tcg_reg_alloc_op(TCGContext *s, |
1675 | a9751609 | Richard Henderson | const TCGOpDef *def, TCGOpcode opc,
|
1676 | c896fe29 | bellard | const TCGArg *args,
|
1677 | 866cb6cb | Aurelien Jarno | unsigned int dead_args) |
1678 | c896fe29 | bellard | { |
1679 | c896fe29 | bellard | TCGRegSet allocated_regs; |
1680 | c896fe29 | bellard | int i, k, nb_iargs, nb_oargs, reg;
|
1681 | c896fe29 | bellard | TCGArg arg; |
1682 | c896fe29 | bellard | const TCGArgConstraint *arg_ct;
|
1683 | c896fe29 | bellard | TCGTemp *ts; |
1684 | c896fe29 | bellard | TCGArg new_args[TCG_MAX_OP_ARGS]; |
1685 | c896fe29 | bellard | int const_args[TCG_MAX_OP_ARGS];
|
1686 | c896fe29 | bellard | |
1687 | c896fe29 | bellard | nb_oargs = def->nb_oargs; |
1688 | c896fe29 | bellard | nb_iargs = def->nb_iargs; |
1689 | c896fe29 | bellard | |
1690 | c896fe29 | bellard | /* copy constants */
|
1691 | c896fe29 | bellard | memcpy(new_args + nb_oargs + nb_iargs, |
1692 | c896fe29 | bellard | args + nb_oargs + nb_iargs, |
1693 | c896fe29 | bellard | sizeof(TCGArg) * def->nb_cargs);
|
1694 | c896fe29 | bellard | |
1695 | c896fe29 | bellard | /* satisfy input constraints */
|
1696 | c896fe29 | bellard | tcg_regset_set(allocated_regs, s->reserved_regs); |
1697 | c896fe29 | bellard | for(k = 0; k < nb_iargs; k++) { |
1698 | c896fe29 | bellard | i = def->sorted_args[nb_oargs + k]; |
1699 | c896fe29 | bellard | arg = args[i]; |
1700 | c896fe29 | bellard | arg_ct = &def->args_ct[i]; |
1701 | c896fe29 | bellard | ts = &s->temps[arg]; |
1702 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_MEM) {
|
1703 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1704 | e4d5434c | blueswir1 | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1705 | c896fe29 | bellard | ts->val_type = TEMP_VAL_REG; |
1706 | c896fe29 | bellard | ts->reg = reg; |
1707 | c896fe29 | bellard | ts->mem_coherent = 1;
|
1708 | c896fe29 | bellard | s->reg_to_temp[reg] = arg; |
1709 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1710 | c896fe29 | bellard | if (tcg_target_const_match(ts->val, arg_ct)) {
|
1711 | c896fe29 | bellard | /* constant is OK for instruction */
|
1712 | c896fe29 | bellard | const_args[i] = 1;
|
1713 | c896fe29 | bellard | new_args[i] = ts->val; |
1714 | c896fe29 | bellard | goto iarg_end;
|
1715 | c896fe29 | bellard | } else {
|
1716 | e8996ee0 | bellard | /* need to move to a register */
|
1717 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1718 | c896fe29 | bellard | tcg_out_movi(s, ts->type, reg, ts->val); |
1719 | e8996ee0 | bellard | ts->val_type = TEMP_VAL_REG; |
1720 | e8996ee0 | bellard | ts->reg = reg; |
1721 | e8996ee0 | bellard | ts->mem_coherent = 0;
|
1722 | e8996ee0 | bellard | s->reg_to_temp[reg] = arg; |
1723 | c896fe29 | bellard | } |
1724 | c896fe29 | bellard | } |
1725 | c896fe29 | bellard | assert(ts->val_type == TEMP_VAL_REG); |
1726 | 5ff9d6a4 | bellard | if (arg_ct->ct & TCG_CT_IALIAS) {
|
1727 | 5ff9d6a4 | bellard | if (ts->fixed_reg) {
|
1728 | 5ff9d6a4 | bellard | /* if fixed register, we must allocate a new register
|
1729 | 5ff9d6a4 | bellard | if the alias is not the same register */
|
1730 | 5ff9d6a4 | bellard | if (arg != args[arg_ct->alias_index])
|
1731 | 5ff9d6a4 | bellard | goto allocate_in_reg;
|
1732 | 5ff9d6a4 | bellard | } else {
|
1733 | 5ff9d6a4 | bellard | /* if the input is aliased to an output and if it is
|
1734 | 5ff9d6a4 | bellard | not dead after the instruction, we must allocate
|
1735 | 5ff9d6a4 | bellard | a new register and move it */
|
1736 | 866cb6cb | Aurelien Jarno | if (!IS_DEAD_ARG(i)) {
|
1737 | 5ff9d6a4 | bellard | goto allocate_in_reg;
|
1738 | 866cb6cb | Aurelien Jarno | } |
1739 | 5ff9d6a4 | bellard | } |
1740 | c896fe29 | bellard | } |
1741 | c896fe29 | bellard | reg = ts->reg; |
1742 | c896fe29 | bellard | if (tcg_regset_test_reg(arg_ct->u.regs, reg)) {
|
1743 | c896fe29 | bellard | /* nothing to do : the constraint is satisfied */
|
1744 | c896fe29 | bellard | } else {
|
1745 | c896fe29 | bellard | allocate_in_reg:
|
1746 | c896fe29 | bellard | /* allocate a new register matching the constraint
|
1747 | c896fe29 | bellard | and move the temporary register into it */
|
1748 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1749 | 3b6dac34 | Richard Henderson | tcg_out_mov(s, ts->type, reg, ts->reg); |
1750 | c896fe29 | bellard | } |
1751 | c896fe29 | bellard | new_args[i] = reg; |
1752 | c896fe29 | bellard | const_args[i] = 0;
|
1753 | c896fe29 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1754 | c896fe29 | bellard | iarg_end: ;
|
1755 | c896fe29 | bellard | } |
1756 | c896fe29 | bellard | |
1757 | e8996ee0 | bellard | if (def->flags & TCG_OPF_BB_END) {
|
1758 | e8996ee0 | bellard | tcg_reg_alloc_bb_end(s, allocated_regs); |
1759 | e8996ee0 | bellard | } else {
|
1760 | e8996ee0 | bellard | /* mark dead temporaries and free the associated registers */
|
1761 | 866cb6cb | Aurelien Jarno | for(i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
|
1762 | 866cb6cb | Aurelien Jarno | arg = args[i]; |
1763 | 866cb6cb | Aurelien Jarno | if (IS_DEAD_ARG(i)) {
|
1764 | e8996ee0 | bellard | ts = &s->temps[arg]; |
1765 | e8996ee0 | bellard | if (!ts->fixed_reg) {
|
1766 | e8996ee0 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
1767 | e8996ee0 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1768 | e8996ee0 | bellard | ts->val_type = TEMP_VAL_DEAD; |
1769 | e8996ee0 | bellard | } |
1770 | c896fe29 | bellard | } |
1771 | c896fe29 | bellard | } |
1772 | e8996ee0 | bellard | |
1773 | e8996ee0 | bellard | if (def->flags & TCG_OPF_CALL_CLOBBER) {
|
1774 | e8996ee0 | bellard | /* XXX: permit generic clobber register list ? */
|
1775 | e8996ee0 | bellard | for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) { |
1776 | e8996ee0 | bellard | if (tcg_regset_test_reg(tcg_target_call_clobber_regs, reg)) {
|
1777 | e8996ee0 | bellard | tcg_reg_free(s, reg); |
1778 | e8996ee0 | bellard | } |
1779 | c896fe29 | bellard | } |
1780 | e8996ee0 | bellard | /* XXX: for load/store we could do that only for the slow path
|
1781 | e8996ee0 | bellard | (i.e. when a memory callback is called) */
|
1782 | e8996ee0 | bellard | |
1783 | e8996ee0 | bellard | /* store globals and free associated registers (we assume the insn
|
1784 | e8996ee0 | bellard | can modify any global. */
|
1785 | e8996ee0 | bellard | save_globals(s, allocated_regs); |
1786 | c896fe29 | bellard | } |
1787 | e8996ee0 | bellard | |
1788 | e8996ee0 | bellard | /* satisfy the output constraints */
|
1789 | e8996ee0 | bellard | tcg_regset_set(allocated_regs, s->reserved_regs); |
1790 | e8996ee0 | bellard | for(k = 0; k < nb_oargs; k++) { |
1791 | e8996ee0 | bellard | i = def->sorted_args[k]; |
1792 | e8996ee0 | bellard | arg = args[i]; |
1793 | e8996ee0 | bellard | arg_ct = &def->args_ct[i]; |
1794 | e8996ee0 | bellard | ts = &s->temps[arg]; |
1795 | e8996ee0 | bellard | if (arg_ct->ct & TCG_CT_ALIAS) {
|
1796 | e8996ee0 | bellard | reg = new_args[arg_ct->alias_index]; |
1797 | e8996ee0 | bellard | } else {
|
1798 | e8996ee0 | bellard | /* if fixed register, we try to use it */
|
1799 | e8996ee0 | bellard | reg = ts->reg; |
1800 | e8996ee0 | bellard | if (ts->fixed_reg &&
|
1801 | e8996ee0 | bellard | tcg_regset_test_reg(arg_ct->u.regs, reg)) { |
1802 | e8996ee0 | bellard | goto oarg_end;
|
1803 | e8996ee0 | bellard | } |
1804 | e8996ee0 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1805 | c896fe29 | bellard | } |
1806 | e8996ee0 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1807 | e8996ee0 | bellard | /* if a fixed register is used, then a move will be done afterwards */
|
1808 | e8996ee0 | bellard | if (!ts->fixed_reg) {
|
1809 | e8996ee0 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
1810 | e8996ee0 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1811 | 8c11ad25 | Aurelien Jarno | if (IS_DEAD_ARG(i)) {
|
1812 | 8c11ad25 | Aurelien Jarno | ts->val_type = TEMP_VAL_DEAD; |
1813 | 8c11ad25 | Aurelien Jarno | } else {
|
1814 | 8c11ad25 | Aurelien Jarno | ts->val_type = TEMP_VAL_REG; |
1815 | 8c11ad25 | Aurelien Jarno | ts->reg = reg; |
1816 | 8c11ad25 | Aurelien Jarno | /* temp value is modified, so the value kept in memory is
|
1817 | 8c11ad25 | Aurelien Jarno | potentially not the same */
|
1818 | 8c11ad25 | Aurelien Jarno | ts->mem_coherent = 0;
|
1819 | 8c11ad25 | Aurelien Jarno | s->reg_to_temp[reg] = arg; |
1820 | 8c11ad25 | Aurelien Jarno | } |
1821 | e8996ee0 | bellard | } |
1822 | e8996ee0 | bellard | oarg_end:
|
1823 | e8996ee0 | bellard | new_args[i] = reg; |
1824 | c896fe29 | bellard | } |
1825 | c896fe29 | bellard | } |
1826 | c896fe29 | bellard | |
1827 | c896fe29 | bellard | /* emit instruction */
|
1828 | c896fe29 | bellard | tcg_out_op(s, opc, new_args, const_args); |
1829 | c896fe29 | bellard | |
1830 | c896fe29 | bellard | /* move the outputs in the correct register if needed */
|
1831 | c896fe29 | bellard | for(i = 0; i < nb_oargs; i++) { |
1832 | c896fe29 | bellard | ts = &s->temps[args[i]]; |
1833 | c896fe29 | bellard | reg = new_args[i]; |
1834 | c896fe29 | bellard | if (ts->fixed_reg && ts->reg != reg) {
|
1835 | 3b6dac34 | Richard Henderson | tcg_out_mov(s, ts->type, ts->reg, reg); |
1836 | c896fe29 | bellard | } |
1837 | c896fe29 | bellard | } |
1838 | c896fe29 | bellard | } |
1839 | c896fe29 | bellard | |
1840 | b03cce8e | bellard | #ifdef TCG_TARGET_STACK_GROWSUP
|
1841 | b03cce8e | bellard | #define STACK_DIR(x) (-(x))
|
1842 | b03cce8e | bellard | #else
|
1843 | b03cce8e | bellard | #define STACK_DIR(x) (x)
|
1844 | b03cce8e | bellard | #endif
|
1845 | b03cce8e | bellard | |
1846 | c896fe29 | bellard | static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def, |
1847 | a9751609 | Richard Henderson | TCGOpcode opc, const TCGArg *args,
|
1848 | 866cb6cb | Aurelien Jarno | unsigned int dead_args) |
1849 | c896fe29 | bellard | { |
1850 | c896fe29 | bellard | int nb_iargs, nb_oargs, flags, nb_regs, i, reg, nb_params;
|
1851 | c896fe29 | bellard | TCGArg arg, func_arg; |
1852 | c896fe29 | bellard | TCGTemp *ts; |
1853 | f54b3f92 | aurel32 | tcg_target_long stack_offset, call_stack_size, func_addr; |
1854 | b03cce8e | bellard | int const_func_arg, allocate_args;
|
1855 | c896fe29 | bellard | TCGRegSet allocated_regs; |
1856 | c896fe29 | bellard | const TCGArgConstraint *arg_ct;
|
1857 | c896fe29 | bellard | |
1858 | c896fe29 | bellard | arg = *args++; |
1859 | c896fe29 | bellard | |
1860 | c896fe29 | bellard | nb_oargs = arg >> 16;
|
1861 | c896fe29 | bellard | nb_iargs = arg & 0xffff;
|
1862 | c896fe29 | bellard | nb_params = nb_iargs - 1;
|
1863 | c896fe29 | bellard | |
1864 | c896fe29 | bellard | flags = args[nb_oargs + nb_iargs]; |
1865 | c896fe29 | bellard | |
1866 | c896fe29 | bellard | nb_regs = tcg_target_get_call_iarg_regs_count(flags); |
1867 | c896fe29 | bellard | if (nb_regs > nb_params)
|
1868 | c896fe29 | bellard | nb_regs = nb_params; |
1869 | c896fe29 | bellard | |
1870 | c896fe29 | bellard | /* assign stack slots first */
|
1871 | c896fe29 | bellard | call_stack_size = (nb_params - nb_regs) * sizeof(tcg_target_long);
|
1872 | c896fe29 | bellard | call_stack_size = (call_stack_size + TCG_TARGET_STACK_ALIGN - 1) &
|
1873 | c896fe29 | bellard | ~(TCG_TARGET_STACK_ALIGN - 1);
|
1874 | b03cce8e | bellard | allocate_args = (call_stack_size > TCG_STATIC_CALL_ARGS_SIZE); |
1875 | b03cce8e | bellard | if (allocate_args) {
|
1876 | 345649c0 | Blue Swirl | /* XXX: if more than TCG_STATIC_CALL_ARGS_SIZE is needed,
|
1877 | 345649c0 | Blue Swirl | preallocate call stack */
|
1878 | 345649c0 | Blue Swirl | tcg_abort(); |
1879 | b03cce8e | bellard | } |
1880 | 39cf05d3 | bellard | |
1881 | 39cf05d3 | bellard | stack_offset = TCG_TARGET_CALL_STACK_OFFSET; |
1882 | c896fe29 | bellard | for(i = nb_regs; i < nb_params; i++) {
|
1883 | c896fe29 | bellard | arg = args[nb_oargs + i]; |
1884 | 39cf05d3 | bellard | #ifdef TCG_TARGET_STACK_GROWSUP
|
1885 | 39cf05d3 | bellard | stack_offset -= sizeof(tcg_target_long);
|
1886 | 39cf05d3 | bellard | #endif
|
1887 | 39cf05d3 | bellard | if (arg != TCG_CALL_DUMMY_ARG) {
|
1888 | 39cf05d3 | bellard | ts = &s->temps[arg]; |
1889 | 39cf05d3 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1890 | 39cf05d3 | bellard | tcg_out_st(s, ts->type, ts->reg, TCG_REG_CALL_STACK, stack_offset); |
1891 | 39cf05d3 | bellard | } else if (ts->val_type == TEMP_VAL_MEM) { |
1892 | 39cf05d3 | bellard | reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type], |
1893 | 39cf05d3 | bellard | s->reserved_regs); |
1894 | 39cf05d3 | bellard | /* XXX: not correct if reading values from the stack */
|
1895 | 39cf05d3 | bellard | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1896 | 39cf05d3 | bellard | tcg_out_st(s, ts->type, reg, TCG_REG_CALL_STACK, stack_offset); |
1897 | 39cf05d3 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1898 | 39cf05d3 | bellard | reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type], |
1899 | 39cf05d3 | bellard | s->reserved_regs); |
1900 | 39cf05d3 | bellard | /* XXX: sign extend may be needed on some targets */
|
1901 | 39cf05d3 | bellard | tcg_out_movi(s, ts->type, reg, ts->val); |
1902 | 39cf05d3 | bellard | tcg_out_st(s, ts->type, reg, TCG_REG_CALL_STACK, stack_offset); |
1903 | 39cf05d3 | bellard | } else {
|
1904 | 39cf05d3 | bellard | tcg_abort(); |
1905 | 39cf05d3 | bellard | } |
1906 | c896fe29 | bellard | } |
1907 | 39cf05d3 | bellard | #ifndef TCG_TARGET_STACK_GROWSUP
|
1908 | 39cf05d3 | bellard | stack_offset += sizeof(tcg_target_long);
|
1909 | 39cf05d3 | bellard | #endif
|
1910 | c896fe29 | bellard | } |
1911 | c896fe29 | bellard | |
1912 | c896fe29 | bellard | /* assign input registers */
|
1913 | c896fe29 | bellard | tcg_regset_set(allocated_regs, s->reserved_regs); |
1914 | c896fe29 | bellard | for(i = 0; i < nb_regs; i++) { |
1915 | c896fe29 | bellard | arg = args[nb_oargs + i]; |
1916 | 39cf05d3 | bellard | if (arg != TCG_CALL_DUMMY_ARG) {
|
1917 | 39cf05d3 | bellard | ts = &s->temps[arg]; |
1918 | 39cf05d3 | bellard | reg = tcg_target_call_iarg_regs[i]; |
1919 | 39cf05d3 | bellard | tcg_reg_free(s, reg); |
1920 | 39cf05d3 | bellard | if (ts->val_type == TEMP_VAL_REG) {
|
1921 | 39cf05d3 | bellard | if (ts->reg != reg) {
|
1922 | 3b6dac34 | Richard Henderson | tcg_out_mov(s, ts->type, reg, ts->reg); |
1923 | 39cf05d3 | bellard | } |
1924 | 39cf05d3 | bellard | } else if (ts->val_type == TEMP_VAL_MEM) { |
1925 | 39cf05d3 | bellard | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1926 | 39cf05d3 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1927 | 39cf05d3 | bellard | /* XXX: sign extend ? */
|
1928 | 39cf05d3 | bellard | tcg_out_movi(s, ts->type, reg, ts->val); |
1929 | 39cf05d3 | bellard | } else {
|
1930 | 39cf05d3 | bellard | tcg_abort(); |
1931 | c896fe29 | bellard | } |
1932 | 39cf05d3 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1933 | c896fe29 | bellard | } |
1934 | c896fe29 | bellard | } |
1935 | c896fe29 | bellard | |
1936 | c896fe29 | bellard | /* assign function address */
|
1937 | c896fe29 | bellard | func_arg = args[nb_oargs + nb_iargs - 1];
|
1938 | c896fe29 | bellard | arg_ct = &def->args_ct[0];
|
1939 | c896fe29 | bellard | ts = &s->temps[func_arg]; |
1940 | f54b3f92 | aurel32 | func_addr = ts->val; |
1941 | c896fe29 | bellard | const_func_arg = 0;
|
1942 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_MEM) {
|
1943 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1944 | e4d5434c | blueswir1 | tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset); |
1945 | c896fe29 | bellard | func_arg = reg; |
1946 | e8996ee0 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1947 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_REG) { |
1948 | c896fe29 | bellard | reg = ts->reg; |
1949 | c896fe29 | bellard | if (!tcg_regset_test_reg(arg_ct->u.regs, reg)) {
|
1950 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1951 | 3b6dac34 | Richard Henderson | tcg_out_mov(s, ts->type, reg, ts->reg); |
1952 | c896fe29 | bellard | } |
1953 | c896fe29 | bellard | func_arg = reg; |
1954 | e8996ee0 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1955 | c896fe29 | bellard | } else if (ts->val_type == TEMP_VAL_CONST) { |
1956 | f54b3f92 | aurel32 | if (tcg_target_const_match(func_addr, arg_ct)) {
|
1957 | c896fe29 | bellard | const_func_arg = 1;
|
1958 | f54b3f92 | aurel32 | func_arg = func_addr; |
1959 | c896fe29 | bellard | } else {
|
1960 | c896fe29 | bellard | reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs); |
1961 | f54b3f92 | aurel32 | tcg_out_movi(s, ts->type, reg, func_addr); |
1962 | c896fe29 | bellard | func_arg = reg; |
1963 | e8996ee0 | bellard | tcg_regset_set_reg(allocated_regs, reg); |
1964 | c896fe29 | bellard | } |
1965 | c896fe29 | bellard | } else {
|
1966 | c896fe29 | bellard | tcg_abort(); |
1967 | c896fe29 | bellard | } |
1968 | e8996ee0 | bellard | |
1969 | c896fe29 | bellard | |
1970 | c896fe29 | bellard | /* mark dead temporaries and free the associated registers */
|
1971 | 866cb6cb | Aurelien Jarno | for(i = nb_oargs; i < nb_iargs + nb_oargs; i++) {
|
1972 | 866cb6cb | Aurelien Jarno | arg = args[i]; |
1973 | 866cb6cb | Aurelien Jarno | if (IS_DEAD_ARG(i)) {
|
1974 | c896fe29 | bellard | ts = &s->temps[arg]; |
1975 | e8996ee0 | bellard | if (!ts->fixed_reg) {
|
1976 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
1977 | c896fe29 | bellard | s->reg_to_temp[ts->reg] = -1;
|
1978 | c896fe29 | bellard | ts->val_type = TEMP_VAL_DEAD; |
1979 | c896fe29 | bellard | } |
1980 | c896fe29 | bellard | } |
1981 | c896fe29 | bellard | } |
1982 | c896fe29 | bellard | |
1983 | c896fe29 | bellard | /* clobber call registers */
|
1984 | c896fe29 | bellard | for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) { |
1985 | c896fe29 | bellard | if (tcg_regset_test_reg(tcg_target_call_clobber_regs, reg)) {
|
1986 | c896fe29 | bellard | tcg_reg_free(s, reg); |
1987 | c896fe29 | bellard | } |
1988 | c896fe29 | bellard | } |
1989 | c896fe29 | bellard | |
1990 | c896fe29 | bellard | /* store globals and free associated registers (we assume the call
|
1991 | c896fe29 | bellard | can modify any global. */
|
1992 | b9c18f56 | aurel32 | if (!(flags & TCG_CALL_CONST)) {
|
1993 | b9c18f56 | aurel32 | save_globals(s, allocated_regs); |
1994 | b9c18f56 | aurel32 | } |
1995 | c896fe29 | bellard | |
1996 | c896fe29 | bellard | tcg_out_op(s, opc, &func_arg, &const_func_arg); |
1997 | c896fe29 | bellard | |
1998 | c896fe29 | bellard | /* assign output registers and emit moves if needed */
|
1999 | c896fe29 | bellard | for(i = 0; i < nb_oargs; i++) { |
2000 | c896fe29 | bellard | arg = args[i]; |
2001 | c896fe29 | bellard | ts = &s->temps[arg]; |
2002 | c896fe29 | bellard | reg = tcg_target_call_oarg_regs[i]; |
2003 | e8996ee0 | bellard | assert(s->reg_to_temp[reg] == -1);
|
2004 | c896fe29 | bellard | if (ts->fixed_reg) {
|
2005 | c896fe29 | bellard | if (ts->reg != reg) {
|
2006 | 3b6dac34 | Richard Henderson | tcg_out_mov(s, ts->type, ts->reg, reg); |
2007 | c896fe29 | bellard | } |
2008 | c896fe29 | bellard | } else {
|
2009 | c896fe29 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
2010 | c896fe29 | bellard | s->reg_to_temp[ts->reg] = -1;
|
2011 | 8c11ad25 | Aurelien Jarno | if (IS_DEAD_ARG(i)) {
|
2012 | 8c11ad25 | Aurelien Jarno | ts->val_type = TEMP_VAL_DEAD; |
2013 | 8c11ad25 | Aurelien Jarno | } else {
|
2014 | 8c11ad25 | Aurelien Jarno | ts->val_type = TEMP_VAL_REG; |
2015 | 8c11ad25 | Aurelien Jarno | ts->reg = reg; |
2016 | 8c11ad25 | Aurelien Jarno | ts->mem_coherent = 0;
|
2017 | 8c11ad25 | Aurelien Jarno | s->reg_to_temp[reg] = arg; |
2018 | 8c11ad25 | Aurelien Jarno | } |
2019 | c896fe29 | bellard | } |
2020 | c896fe29 | bellard | } |
2021 | c896fe29 | bellard | |
2022 | c896fe29 | bellard | return nb_iargs + nb_oargs + def->nb_cargs + 1; |
2023 | c896fe29 | bellard | } |
2024 | c896fe29 | bellard | |
2025 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
2026 | c896fe29 | bellard | |
2027 | 54604f74 | aurel32 | static int64_t tcg_table_op_count[NB_OPS];
|
2028 | c896fe29 | bellard | |
2029 | 871e6c35 | Blue Swirl | static void dump_op_count(void) |
2030 | c896fe29 | bellard | { |
2031 | c896fe29 | bellard | int i;
|
2032 | c896fe29 | bellard | FILE *f; |
2033 | 54604f74 | aurel32 | f = fopen("/tmp/op.log", "w"); |
2034 | c896fe29 | bellard | for(i = INDEX_op_end; i < NB_OPS; i++) {
|
2035 | 54604f74 | aurel32 | fprintf(f, "%s %" PRId64 "\n", tcg_op_defs[i].name, tcg_table_op_count[i]); |
2036 | c896fe29 | bellard | } |
2037 | c896fe29 | bellard | fclose(f); |
2038 | c896fe29 | bellard | } |
2039 | c896fe29 | bellard | #endif
|
2040 | c896fe29 | bellard | |
2041 | c896fe29 | bellard | |
2042 | c896fe29 | bellard | static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf, |
2043 | 2ba1eeb6 | pbrook | long search_pc)
|
2044 | c896fe29 | bellard | { |
2045 | a9751609 | Richard Henderson | TCGOpcode opc; |
2046 | a9751609 | Richard Henderson | int op_index;
|
2047 | c896fe29 | bellard | const TCGOpDef *def;
|
2048 | 866cb6cb | Aurelien Jarno | unsigned int dead_args; |
2049 | c896fe29 | bellard | const TCGArg *args;
|
2050 | c896fe29 | bellard | |
2051 | c896fe29 | bellard | #ifdef DEBUG_DISAS
|
2052 | 8fec2b8c | aliguori | if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) {
|
2053 | 93fcfe39 | aliguori | qemu_log("OP:\n");
|
2054 | c896fe29 | bellard | tcg_dump_ops(s, logfile); |
2055 | 93fcfe39 | aliguori | qemu_log("\n");
|
2056 | c896fe29 | bellard | } |
2057 | c896fe29 | bellard | #endif
|
2058 | c896fe29 | bellard | |
2059 | 8f2e8c07 | Kirill Batuzov | #ifdef USE_TCG_OPTIMIZATIONS
|
2060 | 8f2e8c07 | Kirill Batuzov | gen_opparam_ptr = |
2061 | 8f2e8c07 | Kirill Batuzov | tcg_optimize(s, gen_opc_ptr, gen_opparam_buf, tcg_op_defs); |
2062 | 8f2e8c07 | Kirill Batuzov | #endif
|
2063 | 8f2e8c07 | Kirill Batuzov | |
2064 | a23a9ec6 | bellard | #ifdef CONFIG_PROFILER
|
2065 | a23a9ec6 | bellard | s->la_time -= profile_getclock(); |
2066 | a23a9ec6 | bellard | #endif
|
2067 | c896fe29 | bellard | tcg_liveness_analysis(s); |
2068 | a23a9ec6 | bellard | #ifdef CONFIG_PROFILER
|
2069 | a23a9ec6 | bellard | s->la_time += profile_getclock(); |
2070 | a23a9ec6 | bellard | #endif
|
2071 | c896fe29 | bellard | |
2072 | c896fe29 | bellard | #ifdef DEBUG_DISAS
|
2073 | 8fec2b8c | aliguori | if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_OPT))) {
|
2074 | 6a957025 | Aurelien Jarno | qemu_log("OP after liveness analysis:\n");
|
2075 | c896fe29 | bellard | tcg_dump_ops(s, logfile); |
2076 | 93fcfe39 | aliguori | qemu_log("\n");
|
2077 | c896fe29 | bellard | } |
2078 | c896fe29 | bellard | #endif
|
2079 | c896fe29 | bellard | |
2080 | c896fe29 | bellard | tcg_reg_alloc_start(s); |
2081 | c896fe29 | bellard | |
2082 | c896fe29 | bellard | s->code_buf = gen_code_buf; |
2083 | c896fe29 | bellard | s->code_ptr = gen_code_buf; |
2084 | c896fe29 | bellard | |
2085 | c896fe29 | bellard | args = gen_opparam_buf; |
2086 | c896fe29 | bellard | op_index = 0;
|
2087 | b3db8758 | blueswir1 | |
2088 | c896fe29 | bellard | for(;;) {
|
2089 | c896fe29 | bellard | opc = gen_opc_buf[op_index]; |
2090 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
2091 | 54604f74 | aurel32 | tcg_table_op_count[opc]++; |
2092 | c896fe29 | bellard | #endif
|
2093 | c896fe29 | bellard | def = &tcg_op_defs[opc]; |
2094 | c896fe29 | bellard | #if 0
|
2095 | c896fe29 | bellard | printf("%s: %d %d %d\n", def->name,
|
2096 | c896fe29 | bellard | def->nb_oargs, def->nb_iargs, def->nb_cargs);
|
2097 | c896fe29 | bellard | // dump_regs(s);
|
2098 | c896fe29 | bellard | #endif
|
2099 | c896fe29 | bellard | switch(opc) {
|
2100 | c896fe29 | bellard | case INDEX_op_mov_i32:
|
2101 | c896fe29 | bellard | #if TCG_TARGET_REG_BITS == 64 |
2102 | c896fe29 | bellard | case INDEX_op_mov_i64:
|
2103 | c896fe29 | bellard | #endif
|
2104 | 866cb6cb | Aurelien Jarno | dead_args = s->op_dead_args[op_index]; |
2105 | 866cb6cb | Aurelien Jarno | tcg_reg_alloc_mov(s, def, args, dead_args); |
2106 | c896fe29 | bellard | break;
|
2107 | e8996ee0 | bellard | case INDEX_op_movi_i32:
|
2108 | e8996ee0 | bellard | #if TCG_TARGET_REG_BITS == 64 |
2109 | e8996ee0 | bellard | case INDEX_op_movi_i64:
|
2110 | e8996ee0 | bellard | #endif
|
2111 | e8996ee0 | bellard | tcg_reg_alloc_movi(s, args); |
2112 | e8996ee0 | bellard | break;
|
2113 | 7e4597d7 | bellard | case INDEX_op_debug_insn_start:
|
2114 | 7e4597d7 | bellard | /* debug instruction */
|
2115 | 7e4597d7 | bellard | break;
|
2116 | c896fe29 | bellard | case INDEX_op_nop:
|
2117 | c896fe29 | bellard | case INDEX_op_nop1:
|
2118 | c896fe29 | bellard | case INDEX_op_nop2:
|
2119 | c896fe29 | bellard | case INDEX_op_nop3:
|
2120 | c896fe29 | bellard | break;
|
2121 | c896fe29 | bellard | case INDEX_op_nopn:
|
2122 | c896fe29 | bellard | args += args[0];
|
2123 | c896fe29 | bellard | goto next;
|
2124 | 5ff9d6a4 | bellard | case INDEX_op_discard:
|
2125 | 5ff9d6a4 | bellard | { |
2126 | 5ff9d6a4 | bellard | TCGTemp *ts; |
2127 | 5ff9d6a4 | bellard | ts = &s->temps[args[0]];
|
2128 | 5ff9d6a4 | bellard | /* mark the temporary as dead */
|
2129 | e8996ee0 | bellard | if (!ts->fixed_reg) {
|
2130 | 5ff9d6a4 | bellard | if (ts->val_type == TEMP_VAL_REG)
|
2131 | 5ff9d6a4 | bellard | s->reg_to_temp[ts->reg] = -1;
|
2132 | 5ff9d6a4 | bellard | ts->val_type = TEMP_VAL_DEAD; |
2133 | 5ff9d6a4 | bellard | } |
2134 | 5ff9d6a4 | bellard | } |
2135 | 5ff9d6a4 | bellard | break;
|
2136 | c896fe29 | bellard | case INDEX_op_set_label:
|
2137 | e8996ee0 | bellard | tcg_reg_alloc_bb_end(s, s->reserved_regs); |
2138 | c896fe29 | bellard | tcg_out_label(s, args[0], (long)s->code_ptr); |
2139 | c896fe29 | bellard | break;
|
2140 | c896fe29 | bellard | case INDEX_op_call:
|
2141 | 866cb6cb | Aurelien Jarno | dead_args = s->op_dead_args[op_index]; |
2142 | 866cb6cb | Aurelien Jarno | args += tcg_reg_alloc_call(s, def, opc, args, dead_args); |
2143 | c896fe29 | bellard | goto next;
|
2144 | c896fe29 | bellard | case INDEX_op_end:
|
2145 | c896fe29 | bellard | goto the_end;
|
2146 | c896fe29 | bellard | default:
|
2147 | 25c4d9cc | Richard Henderson | /* Sanity check that we've not introduced any unhandled opcodes. */
|
2148 | 25c4d9cc | Richard Henderson | if (def->flags & TCG_OPF_NOT_PRESENT) {
|
2149 | 25c4d9cc | Richard Henderson | tcg_abort(); |
2150 | 25c4d9cc | Richard Henderson | } |
2151 | c896fe29 | bellard | /* Note: in order to speed up the code, it would be much
|
2152 | c896fe29 | bellard | faster to have specialized register allocator functions for
|
2153 | c896fe29 | bellard | some common argument patterns */
|
2154 | 866cb6cb | Aurelien Jarno | dead_args = s->op_dead_args[op_index]; |
2155 | 866cb6cb | Aurelien Jarno | tcg_reg_alloc_op(s, def, opc, args, dead_args); |
2156 | c896fe29 | bellard | break;
|
2157 | c896fe29 | bellard | } |
2158 | c896fe29 | bellard | args += def->nb_args; |
2159 | 8df1ca4b | ths | next:
|
2160 | 2ba1eeb6 | pbrook | if (search_pc >= 0 && search_pc < s->code_ptr - gen_code_buf) { |
2161 | b314f270 | bellard | return op_index;
|
2162 | c896fe29 | bellard | } |
2163 | c896fe29 | bellard | op_index++; |
2164 | c896fe29 | bellard | #ifndef NDEBUG
|
2165 | c896fe29 | bellard | check_regs(s); |
2166 | c896fe29 | bellard | #endif
|
2167 | c896fe29 | bellard | } |
2168 | c896fe29 | bellard | the_end:
|
2169 | c896fe29 | bellard | return -1; |
2170 | c896fe29 | bellard | } |
2171 | c896fe29 | bellard | |
2172 | 54604f74 | aurel32 | int tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf)
|
2173 | c896fe29 | bellard | { |
2174 | c896fe29 | bellard | #ifdef CONFIG_PROFILER
|
2175 | c896fe29 | bellard | { |
2176 | c896fe29 | bellard | int n;
|
2177 | c896fe29 | bellard | n = (gen_opc_ptr - gen_opc_buf); |
2178 | a23a9ec6 | bellard | s->op_count += n; |
2179 | a23a9ec6 | bellard | if (n > s->op_count_max)
|
2180 | a23a9ec6 | bellard | s->op_count_max = n; |
2181 | a23a9ec6 | bellard | |
2182 | a23a9ec6 | bellard | s->temp_count += s->nb_temps; |
2183 | a23a9ec6 | bellard | if (s->nb_temps > s->temp_count_max)
|
2184 | a23a9ec6 | bellard | s->temp_count_max = s->nb_temps; |
2185 | c896fe29 | bellard | } |
2186 | c896fe29 | bellard | #endif
|
2187 | c896fe29 | bellard | |
2188 | 2ba1eeb6 | pbrook | tcg_gen_code_common(s, gen_code_buf, -1);
|
2189 | c896fe29 | bellard | |
2190 | c896fe29 | bellard | /* flush instruction cache */
|
2191 | c896fe29 | bellard | flush_icache_range((unsigned long)gen_code_buf, |
2192 | c896fe29 | bellard | (unsigned long)s->code_ptr); |
2193 | c896fe29 | bellard | return s->code_ptr - gen_code_buf;
|
2194 | c896fe29 | bellard | } |
2195 | c896fe29 | bellard | |
2196 | 2ba1eeb6 | pbrook | /* Return the index of the micro operation such as the pc after is <
|
2197 | 623e265c | pbrook | offset bytes from the start of the TB. The contents of gen_code_buf must
|
2198 | 623e265c | pbrook | not be changed, though writing the same values is ok.
|
2199 | 623e265c | pbrook | Return -1 if not found. */
|
2200 | 54604f74 | aurel32 | int tcg_gen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset) |
2201 | c896fe29 | bellard | { |
2202 | 623e265c | pbrook | return tcg_gen_code_common(s, gen_code_buf, offset);
|
2203 | c896fe29 | bellard | } |
2204 | a23a9ec6 | bellard | |
2205 | a23a9ec6 | bellard | #ifdef CONFIG_PROFILER
|
2206 | 405cf9ff | Stefan Weil | void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf)
|
2207 | a23a9ec6 | bellard | { |
2208 | a23a9ec6 | bellard | TCGContext *s = &tcg_ctx; |
2209 | a23a9ec6 | bellard | int64_t tot; |
2210 | a23a9ec6 | bellard | |
2211 | a23a9ec6 | bellard | tot = s->interm_time + s->code_time; |
2212 | a23a9ec6 | bellard | cpu_fprintf(f, "JIT cycles %" PRId64 " (%0.3f s at 2.4 GHz)\n", |
2213 | a23a9ec6 | bellard | tot, tot / 2.4e9); |
2214 | a23a9ec6 | bellard | cpu_fprintf(f, "translated TBs %" PRId64 " (aborted=%" PRId64 " %0.1f%%)\n", |
2215 | a23a9ec6 | bellard | s->tb_count, |
2216 | a23a9ec6 | bellard | s->tb_count1 - s->tb_count, |
2217 | a23a9ec6 | bellard | s->tb_count1 ? (double)(s->tb_count1 - s->tb_count) / s->tb_count1 * 100.0 : 0); |
2218 | a23a9ec6 | bellard | cpu_fprintf(f, "avg ops/TB %0.1f max=%d\n",
|
2219 | a23a9ec6 | bellard | s->tb_count ? (double)s->op_count / s->tb_count : 0, s->op_count_max); |
2220 | a23a9ec6 | bellard | cpu_fprintf(f, "deleted ops/TB %0.2f\n",
|
2221 | a23a9ec6 | bellard | s->tb_count ? |
2222 | a23a9ec6 | bellard | (double)s->del_op_count / s->tb_count : 0); |
2223 | a23a9ec6 | bellard | cpu_fprintf(f, "avg temps/TB %0.2f max=%d\n",
|
2224 | a23a9ec6 | bellard | s->tb_count ? |
2225 | a23a9ec6 | bellard | (double)s->temp_count / s->tb_count : 0, |
2226 | a23a9ec6 | bellard | s->temp_count_max); |
2227 | a23a9ec6 | bellard | |
2228 | a23a9ec6 | bellard | cpu_fprintf(f, "cycles/op %0.1f\n",
|
2229 | a23a9ec6 | bellard | s->op_count ? (double)tot / s->op_count : 0); |
2230 | a23a9ec6 | bellard | cpu_fprintf(f, "cycles/in byte %0.1f\n",
|
2231 | a23a9ec6 | bellard | s->code_in_len ? (double)tot / s->code_in_len : 0); |
2232 | a23a9ec6 | bellard | cpu_fprintf(f, "cycles/out byte %0.1f\n",
|
2233 | a23a9ec6 | bellard | s->code_out_len ? (double)tot / s->code_out_len : 0); |
2234 | a23a9ec6 | bellard | if (tot == 0) |
2235 | a23a9ec6 | bellard | tot = 1;
|
2236 | a23a9ec6 | bellard | cpu_fprintf(f, " gen_interm time %0.1f%%\n",
|
2237 | a23a9ec6 | bellard | (double)s->interm_time / tot * 100.0); |
2238 | a23a9ec6 | bellard | cpu_fprintf(f, " gen_code time %0.1f%%\n",
|
2239 | a23a9ec6 | bellard | (double)s->code_time / tot * 100.0); |
2240 | a23a9ec6 | bellard | cpu_fprintf(f, "liveness/code time %0.1f%%\n",
|
2241 | a23a9ec6 | bellard | (double)s->la_time / (s->code_time ? s->code_time : 1) * 100.0); |
2242 | a23a9ec6 | bellard | cpu_fprintf(f, "cpu_restore count %" PRId64 "\n", |
2243 | a23a9ec6 | bellard | s->restore_count); |
2244 | a23a9ec6 | bellard | cpu_fprintf(f, " avg cycles %0.1f\n",
|
2245 | a23a9ec6 | bellard | s->restore_count ? (double)s->restore_time / s->restore_count : 0); |
2246 | 871e6c35 | Blue Swirl | |
2247 | 871e6c35 | Blue Swirl | dump_op_count(); |
2248 | a23a9ec6 | bellard | } |
2249 | a23a9ec6 | bellard | #else
|
2250 | 405cf9ff | Stefan Weil | void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf)
|
2251 | a23a9ec6 | bellard | { |
2252 | 24bf7b3a | bellard | cpu_fprintf(f, "[TCG profiler not compiled]\n");
|
2253 | a23a9ec6 | bellard | } |
2254 | a23a9ec6 | bellard | #endif |