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1 | a4f81979 | bellard | /*
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2 | a4f81979 | bellard | * Arm "Angel" semihosting syscalls
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3 | 5fafdf24 | ths | *
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4 | 8e71621f | pbrook | * Copyright (c) 2005, 2007 CodeSourcery.
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5 | 8e71621f | pbrook | * Written by Paul Brook.
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6 | a4f81979 | bellard | *
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7 | a4f81979 | bellard | * This program is free software; you can redistribute it and/or modify
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8 | a4f81979 | bellard | * it under the terms of the GNU General Public License as published by
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9 | a4f81979 | bellard | * the Free Software Foundation; either version 2 of the License, or
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10 | a4f81979 | bellard | * (at your option) any later version.
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11 | a4f81979 | bellard | *
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12 | a4f81979 | bellard | * This program is distributed in the hope that it will be useful,
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13 | a4f81979 | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | a4f81979 | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | a4f81979 | bellard | * GNU General Public License for more details.
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16 | a4f81979 | bellard | *
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17 | a4f81979 | bellard | * You should have received a copy of the GNU General Public License
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18 | 8167ee88 | Blue Swirl | * along with this program; if not, see <http://www.gnu.org/licenses/>.
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19 | a4f81979 | bellard | */
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20 | a4f81979 | bellard | |
21 | a4f81979 | bellard | #include <sys/types.h> |
22 | a4f81979 | bellard | #include <sys/stat.h> |
23 | a4f81979 | bellard | #include <fcntl.h> |
24 | a4f81979 | bellard | #include <unistd.h> |
25 | a4f81979 | bellard | #include <stdlib.h> |
26 | a4f81979 | bellard | #include <stdio.h> |
27 | a4f81979 | bellard | #include <time.h> |
28 | a4f81979 | bellard | |
29 | 8e71621f | pbrook | #include "cpu.h" |
30 | 8e71621f | pbrook | #ifdef CONFIG_USER_ONLY
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31 | a4f81979 | bellard | #include "qemu.h" |
32 | a4f81979 | bellard | |
33 | a4f81979 | bellard | #define ARM_ANGEL_HEAP_SIZE (128 * 1024 * 1024) |
34 | 8e71621f | pbrook | #else
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35 | 87ecb68b | pbrook | #include "qemu-common.h" |
36 | 87ecb68b | pbrook | #include "gdbstub.h" |
37 | 8e71621f | pbrook | #endif
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38 | a4f81979 | bellard | |
39 | a4f81979 | bellard | #define SYS_OPEN 0x01 |
40 | a4f81979 | bellard | #define SYS_CLOSE 0x02 |
41 | a4f81979 | bellard | #define SYS_WRITEC 0x03 |
42 | a4f81979 | bellard | #define SYS_WRITE0 0x04 |
43 | a4f81979 | bellard | #define SYS_WRITE 0x05 |
44 | a4f81979 | bellard | #define SYS_READ 0x06 |
45 | a4f81979 | bellard | #define SYS_READC 0x07 |
46 | a4f81979 | bellard | #define SYS_ISTTY 0x09 |
47 | a4f81979 | bellard | #define SYS_SEEK 0x0a |
48 | a4f81979 | bellard | #define SYS_FLEN 0x0c |
49 | a4f81979 | bellard | #define SYS_TMPNAM 0x0d |
50 | a4f81979 | bellard | #define SYS_REMOVE 0x0e |
51 | a4f81979 | bellard | #define SYS_RENAME 0x0f |
52 | a4f81979 | bellard | #define SYS_CLOCK 0x10 |
53 | a4f81979 | bellard | #define SYS_TIME 0x11 |
54 | a4f81979 | bellard | #define SYS_SYSTEM 0x12 |
55 | a4f81979 | bellard | #define SYS_ERRNO 0x13 |
56 | a4f81979 | bellard | #define SYS_GET_CMDLINE 0x15 |
57 | a4f81979 | bellard | #define SYS_HEAPINFO 0x16 |
58 | a4f81979 | bellard | #define SYS_EXIT 0x18 |
59 | a4f81979 | bellard | |
60 | a4f81979 | bellard | #ifndef O_BINARY
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61 | a4f81979 | bellard | #define O_BINARY 0 |
62 | a4f81979 | bellard | #endif
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63 | a4f81979 | bellard | |
64 | a2d1ebaf | pbrook | #define GDB_O_RDONLY 0x000 |
65 | a2d1ebaf | pbrook | #define GDB_O_WRONLY 0x001 |
66 | a2d1ebaf | pbrook | #define GDB_O_RDWR 0x002 |
67 | a2d1ebaf | pbrook | #define GDB_O_APPEND 0x008 |
68 | a2d1ebaf | pbrook | #define GDB_O_CREAT 0x200 |
69 | a2d1ebaf | pbrook | #define GDB_O_TRUNC 0x400 |
70 | a2d1ebaf | pbrook | #define GDB_O_BINARY 0 |
71 | a2d1ebaf | pbrook | |
72 | a2d1ebaf | pbrook | static int gdb_open_modeflags[12] = { |
73 | a2d1ebaf | pbrook | GDB_O_RDONLY, |
74 | a2d1ebaf | pbrook | GDB_O_RDONLY | GDB_O_BINARY, |
75 | a2d1ebaf | pbrook | GDB_O_RDWR, |
76 | a2d1ebaf | pbrook | GDB_O_RDWR | GDB_O_BINARY, |
77 | a2d1ebaf | pbrook | GDB_O_WRONLY | GDB_O_CREAT | GDB_O_TRUNC, |
78 | a2d1ebaf | pbrook | GDB_O_WRONLY | GDB_O_CREAT | GDB_O_TRUNC | GDB_O_BINARY, |
79 | a2d1ebaf | pbrook | GDB_O_RDWR | GDB_O_CREAT | GDB_O_TRUNC, |
80 | a2d1ebaf | pbrook | GDB_O_RDWR | GDB_O_CREAT | GDB_O_TRUNC | GDB_O_BINARY, |
81 | a2d1ebaf | pbrook | GDB_O_WRONLY | GDB_O_CREAT | GDB_O_APPEND, |
82 | a2d1ebaf | pbrook | GDB_O_WRONLY | GDB_O_CREAT | GDB_O_APPEND | GDB_O_BINARY, |
83 | a2d1ebaf | pbrook | GDB_O_RDWR | GDB_O_CREAT | GDB_O_APPEND, |
84 | a2d1ebaf | pbrook | GDB_O_RDWR | GDB_O_CREAT | GDB_O_APPEND | GDB_O_BINARY |
85 | a2d1ebaf | pbrook | }; |
86 | a2d1ebaf | pbrook | |
87 | a2d1ebaf | pbrook | static int open_modeflags[12] = { |
88 | a4f81979 | bellard | O_RDONLY, |
89 | a4f81979 | bellard | O_RDONLY | O_BINARY, |
90 | a4f81979 | bellard | O_RDWR, |
91 | a4f81979 | bellard | O_RDWR | O_BINARY, |
92 | a4f81979 | bellard | O_WRONLY | O_CREAT | O_TRUNC, |
93 | a4f81979 | bellard | O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
94 | a4f81979 | bellard | O_RDWR | O_CREAT | O_TRUNC, |
95 | a4f81979 | bellard | O_RDWR | O_CREAT | O_TRUNC | O_BINARY, |
96 | a4f81979 | bellard | O_WRONLY | O_CREAT | O_APPEND, |
97 | a4f81979 | bellard | O_WRONLY | O_CREAT | O_APPEND | O_BINARY, |
98 | a4f81979 | bellard | O_RDWR | O_CREAT | O_APPEND, |
99 | a4f81979 | bellard | O_RDWR | O_CREAT | O_APPEND | O_BINARY |
100 | a4f81979 | bellard | }; |
101 | a4f81979 | bellard | |
102 | 8e71621f | pbrook | #ifdef CONFIG_USER_ONLY
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103 | a4f81979 | bellard | static inline uint32_t set_swi_errno(TaskState *ts, uint32_t code) |
104 | a4f81979 | bellard | { |
105 | 8e71621f | pbrook | if (code == (uint32_t)-1) |
106 | 8e71621f | pbrook | ts->swi_errno = errno; |
107 | 8e71621f | pbrook | return code;
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108 | 8e71621f | pbrook | } |
109 | 8e71621f | pbrook | #else
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110 | 8e71621f | pbrook | static inline uint32_t set_swi_errno(CPUState *env, uint32_t code) |
111 | 8e71621f | pbrook | { |
112 | 8e71621f | pbrook | return code;
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113 | 8e71621f | pbrook | } |
114 | 8e71621f | pbrook | |
115 | a87295e8 | pbrook | #include "softmmu-semi.h" |
116 | 8e71621f | pbrook | #endif
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117 | a4f81979 | bellard | |
118 | a2d1ebaf | pbrook | static target_ulong arm_semi_syscall_len;
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119 | a2d1ebaf | pbrook | |
120 | 33d9cc8a | pbrook | #if !defined(CONFIG_USER_ONLY)
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121 | 33d9cc8a | pbrook | static target_ulong syscall_err;
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122 | 33d9cc8a | pbrook | #endif
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123 | 33d9cc8a | pbrook | |
124 | a2d1ebaf | pbrook | static void arm_semi_cb(CPUState *env, target_ulong ret, target_ulong err) |
125 | a2d1ebaf | pbrook | { |
126 | a2d1ebaf | pbrook | #ifdef CONFIG_USER_ONLY
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127 | a2d1ebaf | pbrook | TaskState *ts = env->opaque; |
128 | a2d1ebaf | pbrook | #endif
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129 | 33d9cc8a | pbrook | |
130 | a2d1ebaf | pbrook | if (ret == (target_ulong)-1) { |
131 | a2d1ebaf | pbrook | #ifdef CONFIG_USER_ONLY
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132 | a2d1ebaf | pbrook | ts->swi_errno = err; |
133 | 33d9cc8a | pbrook | #else
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134 | 33d9cc8a | pbrook | syscall_err = err; |
135 | a2d1ebaf | pbrook | #endif
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136 | a2d1ebaf | pbrook | env->regs[0] = ret;
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137 | a2d1ebaf | pbrook | } else {
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138 | a2d1ebaf | pbrook | /* Fixup syscalls that use nonstardard return conventions. */
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139 | a2d1ebaf | pbrook | switch (env->regs[0]) { |
140 | a2d1ebaf | pbrook | case SYS_WRITE:
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141 | a2d1ebaf | pbrook | case SYS_READ:
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142 | a2d1ebaf | pbrook | env->regs[0] = arm_semi_syscall_len - ret;
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143 | a2d1ebaf | pbrook | break;
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144 | a2d1ebaf | pbrook | case SYS_SEEK:
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145 | a2d1ebaf | pbrook | env->regs[0] = 0; |
146 | a2d1ebaf | pbrook | break;
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147 | a2d1ebaf | pbrook | default:
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148 | a2d1ebaf | pbrook | env->regs[0] = ret;
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149 | a2d1ebaf | pbrook | break;
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150 | a2d1ebaf | pbrook | } |
151 | a2d1ebaf | pbrook | } |
152 | a2d1ebaf | pbrook | } |
153 | a2d1ebaf | pbrook | |
154 | 33d9cc8a | pbrook | static void arm_semi_flen_cb(CPUState *env, target_ulong ret, target_ulong err) |
155 | 33d9cc8a | pbrook | { |
156 | 33d9cc8a | pbrook | /* The size is always stored in big-endian order, extract
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157 | 33d9cc8a | pbrook | the value. We assume the size always fit in 32 bits. */
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158 | 33d9cc8a | pbrook | uint32_t size; |
159 | 33d9cc8a | pbrook | cpu_memory_rw_debug(env, env->regs[13]-64+32, (uint8_t *)&size, 4, 0); |
160 | 33d9cc8a | pbrook | env->regs[0] = be32_to_cpu(size);
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161 | 33d9cc8a | pbrook | #ifdef CONFIG_USER_ONLY
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162 | 33d9cc8a | pbrook | ((TaskState *)env->opaque)->swi_errno = err; |
163 | 33d9cc8a | pbrook | #else
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164 | 33d9cc8a | pbrook | syscall_err = err; |
165 | 33d9cc8a | pbrook | #endif
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166 | 33d9cc8a | pbrook | } |
167 | 33d9cc8a | pbrook | |
168 | 2f619698 | bellard | #define ARG(n) \
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169 | 2f619698 | bellard | ({ \ |
170 | 2f619698 | bellard | target_ulong __arg; \ |
171 | 2f619698 | bellard | /* FIXME - handle get_user() failure */ \
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172 | 2f619698 | bellard | get_user_ual(__arg, args + (n) * 4); \
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173 | 2f619698 | bellard | __arg; \ |
174 | 2f619698 | bellard | }) |
175 | 2f619698 | bellard | #define SET_ARG(n, val) put_user_ual(val, args + (n) * 4) |
176 | a4f81979 | bellard | uint32_t do_arm_semihosting(CPUState *env) |
177 | a4f81979 | bellard | { |
178 | 53a5960a | pbrook | target_ulong args; |
179 | a4f81979 | bellard | char * s;
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180 | a4f81979 | bellard | int nr;
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181 | a4f81979 | bellard | uint32_t ret; |
182 | 8e71621f | pbrook | uint32_t len; |
183 | 8e71621f | pbrook | #ifdef CONFIG_USER_ONLY
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184 | a4f81979 | bellard | TaskState *ts = env->opaque; |
185 | 8e71621f | pbrook | #else
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186 | 8e71621f | pbrook | CPUState *ts = env; |
187 | 8e71621f | pbrook | #endif
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188 | a4f81979 | bellard | |
189 | a4f81979 | bellard | nr = env->regs[0];
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190 | 53a5960a | pbrook | args = env->regs[1];
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191 | a4f81979 | bellard | switch (nr) {
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192 | a4f81979 | bellard | case SYS_OPEN:
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193 | 579a97f7 | bellard | if (!(s = lock_user_string(ARG(0)))) |
194 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
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195 | 579a97f7 | bellard | return (uint32_t)-1; |
196 | a4f81979 | bellard | if (ARG(1) >= 12) |
197 | 579a97f7 | bellard | return (uint32_t)-1; |
198 | a4f81979 | bellard | if (strcmp(s, ":tt") == 0) { |
199 | a4f81979 | bellard | if (ARG(1) < 4) |
200 | a4f81979 | bellard | return STDIN_FILENO;
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201 | a4f81979 | bellard | else
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202 | a4f81979 | bellard | return STDOUT_FILENO;
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203 | a4f81979 | bellard | } |
204 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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205 | 5fafdf24 | ths | gdb_do_syscall(arm_semi_cb, "open,%s,%x,1a4", ARG(0), |
206 | 33d9cc8a | pbrook | (int)ARG(2)+1, gdb_open_modeflags[ARG(1)]); |
207 | a2d1ebaf | pbrook | return env->regs[0]; |
208 | a2d1ebaf | pbrook | } else {
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209 | a2d1ebaf | pbrook | ret = set_swi_errno(ts, open(s, open_modeflags[ARG(1)], 0644)); |
210 | a2d1ebaf | pbrook | } |
211 | 8e71621f | pbrook | unlock_user(s, ARG(0), 0); |
212 | 8e71621f | pbrook | return ret;
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213 | a4f81979 | bellard | case SYS_CLOSE:
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214 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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215 | a2d1ebaf | pbrook | gdb_do_syscall(arm_semi_cb, "close,%x", ARG(0)); |
216 | a2d1ebaf | pbrook | return env->regs[0]; |
217 | a2d1ebaf | pbrook | } else {
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218 | a2d1ebaf | pbrook | return set_swi_errno(ts, close(ARG(0))); |
219 | a2d1ebaf | pbrook | } |
220 | a4f81979 | bellard | case SYS_WRITEC:
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221 | 53a5960a | pbrook | { |
222 | 2f619698 | bellard | char c;
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223 | 2f619698 | bellard | |
224 | 2f619698 | bellard | if (get_user_u8(c, args))
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225 | 2f619698 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
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226 | 2f619698 | bellard | return (uint32_t)-1; |
227 | 53a5960a | pbrook | /* Write to debug console. stderr is near enough. */
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228 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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229 | a2d1ebaf | pbrook | gdb_do_syscall(arm_semi_cb, "write,2,%x,1", args);
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230 | a2d1ebaf | pbrook | return env->regs[0]; |
231 | a2d1ebaf | pbrook | } else {
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232 | a2d1ebaf | pbrook | return write(STDERR_FILENO, &c, 1); |
233 | a2d1ebaf | pbrook | } |
234 | 53a5960a | pbrook | } |
235 | a4f81979 | bellard | case SYS_WRITE0:
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236 | 579a97f7 | bellard | if (!(s = lock_user_string(args)))
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237 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
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238 | 579a97f7 | bellard | return (uint32_t)-1; |
239 | a2d1ebaf | pbrook | len = strlen(s); |
240 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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241 | a2d1ebaf | pbrook | gdb_do_syscall(arm_semi_cb, "write,2,%x,%x\n", args, len);
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242 | a2d1ebaf | pbrook | ret = env->regs[0];
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243 | a2d1ebaf | pbrook | } else {
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244 | a2d1ebaf | pbrook | ret = write(STDERR_FILENO, s, len); |
245 | a2d1ebaf | pbrook | } |
246 | 53a5960a | pbrook | unlock_user(s, args, 0);
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247 | 53a5960a | pbrook | return ret;
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248 | a4f81979 | bellard | case SYS_WRITE:
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249 | 8e71621f | pbrook | len = ARG(2);
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250 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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251 | a2d1ebaf | pbrook | arm_semi_syscall_len = len; |
252 | a2d1ebaf | pbrook | gdb_do_syscall(arm_semi_cb, "write,%x,%x,%x", ARG(0), ARG(1), len); |
253 | a2d1ebaf | pbrook | return env->regs[0]; |
254 | a2d1ebaf | pbrook | } else {
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255 | 579a97f7 | bellard | if (!(s = lock_user(VERIFY_READ, ARG(1), len, 1))) |
256 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
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257 | 579a97f7 | bellard | return (uint32_t)-1; |
258 | a2d1ebaf | pbrook | ret = set_swi_errno(ts, write(ARG(0), s, len));
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259 | a2d1ebaf | pbrook | unlock_user(s, ARG(1), 0); |
260 | a2d1ebaf | pbrook | if (ret == (uint32_t)-1) |
261 | a2d1ebaf | pbrook | return -1; |
262 | a2d1ebaf | pbrook | return len - ret;
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263 | a2d1ebaf | pbrook | } |
264 | a4f81979 | bellard | case SYS_READ:
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265 | 8e71621f | pbrook | len = ARG(2);
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266 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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267 | a2d1ebaf | pbrook | arm_semi_syscall_len = len; |
268 | a2d1ebaf | pbrook | gdb_do_syscall(arm_semi_cb, "read,%x,%x,%x", ARG(0), ARG(1), len); |
269 | a2d1ebaf | pbrook | return env->regs[0]; |
270 | a2d1ebaf | pbrook | } else {
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271 | 579a97f7 | bellard | if (!(s = lock_user(VERIFY_WRITE, ARG(1), len, 0))) |
272 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
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273 | 579a97f7 | bellard | return (uint32_t)-1; |
274 | a2d1ebaf | pbrook | do
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275 | a2d1ebaf | pbrook | ret = set_swi_errno(ts, read(ARG(0), s, len));
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276 | a2d1ebaf | pbrook | while (ret == -1 && errno == EINTR); |
277 | a2d1ebaf | pbrook | unlock_user(s, ARG(1), len);
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278 | a2d1ebaf | pbrook | if (ret == (uint32_t)-1) |
279 | a2d1ebaf | pbrook | return -1; |
280 | a2d1ebaf | pbrook | return len - ret;
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281 | a2d1ebaf | pbrook | } |
282 | a4f81979 | bellard | case SYS_READC:
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283 | a4f81979 | bellard | /* XXX: Read from debug cosole. Not implemented. */
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284 | a4f81979 | bellard | return 0; |
285 | a4f81979 | bellard | case SYS_ISTTY:
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286 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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287 | a2d1ebaf | pbrook | gdb_do_syscall(arm_semi_cb, "isatty,%x", ARG(0)); |
288 | a2d1ebaf | pbrook | return env->regs[0]; |
289 | a2d1ebaf | pbrook | } else {
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290 | a2d1ebaf | pbrook | return isatty(ARG(0)); |
291 | a2d1ebaf | pbrook | } |
292 | a4f81979 | bellard | case SYS_SEEK:
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293 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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294 | 33d9cc8a | pbrook | gdb_do_syscall(arm_semi_cb, "lseek,%x,%x,0", ARG(0), ARG(1)); |
295 | a2d1ebaf | pbrook | return env->regs[0]; |
296 | a2d1ebaf | pbrook | } else {
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297 | a2d1ebaf | pbrook | ret = set_swi_errno(ts, lseek(ARG(0), ARG(1), SEEK_SET)); |
298 | a2d1ebaf | pbrook | if (ret == (uint32_t)-1) |
299 | a2d1ebaf | pbrook | return -1; |
300 | a2d1ebaf | pbrook | return 0; |
301 | a2d1ebaf | pbrook | } |
302 | a4f81979 | bellard | case SYS_FLEN:
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303 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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304 | 5fafdf24 | ths | gdb_do_syscall(arm_semi_flen_cb, "fstat,%x,%x",
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305 | 33d9cc8a | pbrook | ARG(0), env->regs[13]-64); |
306 | 33d9cc8a | pbrook | return env->regs[0]; |
307 | a2d1ebaf | pbrook | } else {
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308 | a4f81979 | bellard | struct stat buf;
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309 | a4f81979 | bellard | ret = set_swi_errno(ts, fstat(ARG(0), &buf));
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310 | a4f81979 | bellard | if (ret == (uint32_t)-1) |
311 | a4f81979 | bellard | return -1; |
312 | a4f81979 | bellard | return buf.st_size;
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313 | a4f81979 | bellard | } |
314 | a4f81979 | bellard | case SYS_TMPNAM:
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315 | a4f81979 | bellard | /* XXX: Not implemented. */
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316 | a4f81979 | bellard | return -1; |
317 | a4f81979 | bellard | case SYS_REMOVE:
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318 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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319 | 33d9cc8a | pbrook | gdb_do_syscall(arm_semi_cb, "unlink,%s", ARG(0), (int)ARG(1)+1); |
320 | a2d1ebaf | pbrook | ret = env->regs[0];
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321 | a2d1ebaf | pbrook | } else {
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322 | 579a97f7 | bellard | if (!(s = lock_user_string(ARG(0)))) |
323 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
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324 | 579a97f7 | bellard | return (uint32_t)-1; |
325 | a2d1ebaf | pbrook | ret = set_swi_errno(ts, remove(s)); |
326 | a2d1ebaf | pbrook | unlock_user(s, ARG(0), 0); |
327 | a2d1ebaf | pbrook | } |
328 | 8e71621f | pbrook | return ret;
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329 | a4f81979 | bellard | case SYS_RENAME:
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330 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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331 | a2d1ebaf | pbrook | gdb_do_syscall(arm_semi_cb, "rename,%s,%s",
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332 | 33d9cc8a | pbrook | ARG(0), (int)ARG(1)+1, ARG(2), (int)ARG(3)+1); |
333 | a2d1ebaf | pbrook | return env->regs[0]; |
334 | a2d1ebaf | pbrook | } else {
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335 | 8e71621f | pbrook | char *s2;
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336 | 8e71621f | pbrook | s = lock_user_string(ARG(0));
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337 | 8e71621f | pbrook | s2 = lock_user_string(ARG(2));
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338 | 579a97f7 | bellard | if (!s || !s2)
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339 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
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340 | 579a97f7 | bellard | ret = (uint32_t)-1;
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341 | 579a97f7 | bellard | else
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342 | 579a97f7 | bellard | ret = set_swi_errno(ts, rename(s, s2)); |
343 | 579a97f7 | bellard | if (s2)
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344 | 579a97f7 | bellard | unlock_user(s2, ARG(2), 0); |
345 | 579a97f7 | bellard | if (s)
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346 | 579a97f7 | bellard | unlock_user(s, ARG(0), 0); |
347 | 8e71621f | pbrook | return ret;
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348 | 8e71621f | pbrook | } |
349 | a4f81979 | bellard | case SYS_CLOCK:
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350 | a4f81979 | bellard | return clock() / (CLOCKS_PER_SEC / 100); |
351 | a4f81979 | bellard | case SYS_TIME:
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352 | a4f81979 | bellard | return set_swi_errno(ts, time(NULL)); |
353 | a4f81979 | bellard | case SYS_SYSTEM:
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354 | a2d1ebaf | pbrook | if (use_gdb_syscalls()) {
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355 | 33d9cc8a | pbrook | gdb_do_syscall(arm_semi_cb, "system,%s", ARG(0), (int)ARG(1)+1); |
356 | a2d1ebaf | pbrook | return env->regs[0]; |
357 | a2d1ebaf | pbrook | } else {
|
358 | 579a97f7 | bellard | if (!(s = lock_user_string(ARG(0)))) |
359 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
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360 | 579a97f7 | bellard | return (uint32_t)-1; |
361 | a2d1ebaf | pbrook | ret = set_swi_errno(ts, system(s)); |
362 | a2d1ebaf | pbrook | unlock_user(s, ARG(0), 0); |
363 | a982b531 | ths | return ret;
|
364 | a2d1ebaf | pbrook | } |
365 | a4f81979 | bellard | case SYS_ERRNO:
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366 | 8e71621f | pbrook | #ifdef CONFIG_USER_ONLY
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367 | a4f81979 | bellard | return ts->swi_errno;
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368 | 8e71621f | pbrook | #else
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369 | 33d9cc8a | pbrook | return syscall_err;
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370 | 8e71621f | pbrook | #endif
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371 | a4f81979 | bellard | case SYS_GET_CMDLINE:
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372 | 8e71621f | pbrook | #ifdef CONFIG_USER_ONLY
|
373 | 38d0662a | pbrook | /* Build a commandline from the original argv. */
|
374 | 38d0662a | pbrook | { |
375 | 2e8785ac | Wolfgang Schildbach | char *arm_cmdline_buffer;
|
376 | 2e8785ac | Wolfgang Schildbach | const char *host_cmdline_buffer; |
377 | 579a97f7 | bellard | |
378 | 2e8785ac | Wolfgang Schildbach | unsigned int i; |
379 | 2e8785ac | Wolfgang Schildbach | unsigned int arm_cmdline_len = ARG(1); |
380 | 2e8785ac | Wolfgang Schildbach | unsigned int host_cmdline_len = |
381 | 2e8785ac | Wolfgang Schildbach | ts->info->arg_end-ts->info->arg_start; |
382 | 2e8785ac | Wolfgang Schildbach | |
383 | 2e8785ac | Wolfgang Schildbach | if (!arm_cmdline_len || host_cmdline_len > arm_cmdline_len) {
|
384 | 2e8785ac | Wolfgang Schildbach | return -1; /* not enough space to store command line */ |
385 | 2e8785ac | Wolfgang Schildbach | } |
386 | 38d0662a | pbrook | |
387 | 2e8785ac | Wolfgang Schildbach | if (!host_cmdline_len) {
|
388 | 2e8785ac | Wolfgang Schildbach | /* We special-case the "empty command line" case (argc==0).
|
389 | 2e8785ac | Wolfgang Schildbach | Just provide the terminating 0. */
|
390 | 2e8785ac | Wolfgang Schildbach | arm_cmdline_buffer = lock_user(VERIFY_WRITE, ARG(0), 1, 0); |
391 | 2e8785ac | Wolfgang Schildbach | arm_cmdline_buffer[0] = 0; |
392 | 2e8785ac | Wolfgang Schildbach | unlock_user(arm_cmdline_buffer, ARG(0), 1); |
393 | 38d0662a | pbrook | |
394 | 2e8785ac | Wolfgang Schildbach | /* Adjust the commandline length argument. */
|
395 | 2e8785ac | Wolfgang Schildbach | SET_ARG(1, 0); |
396 | 2e8785ac | Wolfgang Schildbach | return 0; |
397 | 38d0662a | pbrook | } |
398 | 38d0662a | pbrook | |
399 | 2e8785ac | Wolfgang Schildbach | /* lock the buffers on the ARM side */
|
400 | 2e8785ac | Wolfgang Schildbach | arm_cmdline_buffer = |
401 | 2e8785ac | Wolfgang Schildbach | lock_user(VERIFY_WRITE, ARG(0), host_cmdline_len, 0); |
402 | 2e8785ac | Wolfgang Schildbach | host_cmdline_buffer = |
403 | 2e8785ac | Wolfgang Schildbach | lock_user(VERIFY_READ, ts->info->arg_start, |
404 | 2e8785ac | Wolfgang Schildbach | host_cmdline_len, 1);
|
405 | 38d0662a | pbrook | |
406 | 2e8785ac | Wolfgang Schildbach | if (arm_cmdline_buffer && host_cmdline_buffer)
|
407 | 2e8785ac | Wolfgang Schildbach | { |
408 | 2e8785ac | Wolfgang Schildbach | /* the last argument is zero-terminated;
|
409 | 2e8785ac | Wolfgang Schildbach | no need for additional termination */
|
410 | 2e8785ac | Wolfgang Schildbach | memcpy(arm_cmdline_buffer, host_cmdline_buffer, |
411 | 2e8785ac | Wolfgang Schildbach | host_cmdline_len); |
412 | 38d0662a | pbrook | |
413 | 2e8785ac | Wolfgang Schildbach | /* separate arguments by white spaces */
|
414 | 2e8785ac | Wolfgang Schildbach | for (i = 0; i < host_cmdline_len-1; i++) { |
415 | 2e8785ac | Wolfgang Schildbach | if (arm_cmdline_buffer[i] == 0) { |
416 | 2e8785ac | Wolfgang Schildbach | arm_cmdline_buffer[i] = ' ';
|
417 | 2e8785ac | Wolfgang Schildbach | } |
418 | 2e8785ac | Wolfgang Schildbach | } |
419 | 2e8785ac | Wolfgang Schildbach | |
420 | 2e8785ac | Wolfgang Schildbach | /* Adjust the commandline length argument. */
|
421 | 2e8785ac | Wolfgang Schildbach | SET_ARG(1, host_cmdline_len-1); |
422 | 2e8785ac | Wolfgang Schildbach | } |
423 | 2e8785ac | Wolfgang Schildbach | |
424 | 2e8785ac | Wolfgang Schildbach | /* Unlock the buffers on the ARM side. */
|
425 | 2e8785ac | Wolfgang Schildbach | unlock_user(arm_cmdline_buffer, ARG(0), host_cmdline_len);
|
426 | 2e8785ac | Wolfgang Schildbach | unlock_user((void*)host_cmdline_buffer, ts->info->arg_start, 0); |
427 | 2e8785ac | Wolfgang Schildbach | |
428 | 2e8785ac | Wolfgang Schildbach | /* Return success if we could return a commandline. */
|
429 | 2e8785ac | Wolfgang Schildbach | return (arm_cmdline_buffer && host_cmdline_buffer) ? 0 : -1; |
430 | 38d0662a | pbrook | } |
431 | 8e71621f | pbrook | #else
|
432 | 2e8785ac | Wolfgang Schildbach | return -1; |
433 | 8e71621f | pbrook | #endif
|
434 | a4f81979 | bellard | case SYS_HEAPINFO:
|
435 | a4f81979 | bellard | { |
436 | a4f81979 | bellard | uint32_t *ptr; |
437 | a4f81979 | bellard | uint32_t limit; |
438 | a4f81979 | bellard | |
439 | 8e71621f | pbrook | #ifdef CONFIG_USER_ONLY
|
440 | 8e71621f | pbrook | /* Some C libraries assume the heap immediately follows .bss, so
|
441 | a4f81979 | bellard | allocate it using sbrk. */
|
442 | a4f81979 | bellard | if (!ts->heap_limit) {
|
443 | a4f81979 | bellard | long ret;
|
444 | a4f81979 | bellard | |
445 | 53a5960a | pbrook | ts->heap_base = do_brk(0);
|
446 | a4f81979 | bellard | limit = ts->heap_base + ARM_ANGEL_HEAP_SIZE; |
447 | a4f81979 | bellard | /* Try a big heap, and reduce the size if that fails. */
|
448 | a4f81979 | bellard | for (;;) {
|
449 | 53a5960a | pbrook | ret = do_brk(limit); |
450 | a4f81979 | bellard | if (ret != -1) |
451 | a4f81979 | bellard | break;
|
452 | a4f81979 | bellard | limit = (ts->heap_base >> 1) + (limit >> 1); |
453 | a4f81979 | bellard | } |
454 | a4f81979 | bellard | ts->heap_limit = limit; |
455 | a4f81979 | bellard | } |
456 | 3b46e624 | ths | |
457 | 579a97f7 | bellard | if (!(ptr = lock_user(VERIFY_WRITE, ARG(0), 16, 0))) |
458 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
|
459 | 579a97f7 | bellard | return (uint32_t)-1; |
460 | a4f81979 | bellard | ptr[0] = tswap32(ts->heap_base);
|
461 | a4f81979 | bellard | ptr[1] = tswap32(ts->heap_limit);
|
462 | a4f81979 | bellard | ptr[2] = tswap32(ts->stack_base);
|
463 | a4f81979 | bellard | ptr[3] = tswap32(0); /* Stack limit. */ |
464 | 8e71621f | pbrook | unlock_user(ptr, ARG(0), 16); |
465 | 8e71621f | pbrook | #else
|
466 | 8e71621f | pbrook | limit = ram_size; |
467 | 579a97f7 | bellard | if (!(ptr = lock_user(VERIFY_WRITE, ARG(0), 16, 0))) |
468 | 579a97f7 | bellard | /* FIXME - should this error code be -TARGET_EFAULT ? */
|
469 | 579a97f7 | bellard | return (uint32_t)-1; |
470 | 8e71621f | pbrook | /* TODO: Make this use the limit of the loaded application. */
|
471 | 8e71621f | pbrook | ptr[0] = tswap32(limit / 2); |
472 | 8e71621f | pbrook | ptr[1] = tswap32(limit);
|
473 | 8e71621f | pbrook | ptr[2] = tswap32(limit); /* Stack base */ |
474 | 8e71621f | pbrook | ptr[3] = tswap32(0); /* Stack limit. */ |
475 | 8e71621f | pbrook | unlock_user(ptr, ARG(0), 16); |
476 | 8e71621f | pbrook | #endif
|
477 | a4f81979 | bellard | return 0; |
478 | a4f81979 | bellard | } |
479 | a4f81979 | bellard | case SYS_EXIT:
|
480 | 0e1c9c54 | Paul Brook | gdb_exit(env, 0);
|
481 | a4f81979 | bellard | exit(0);
|
482 | a4f81979 | bellard | default:
|
483 | a4f81979 | bellard | fprintf(stderr, "qemu: Unsupported SemiHosting SWI 0x%02x\n", nr);
|
484 | a4f81979 | bellard | cpu_dump_state(env, stderr, fprintf, 0);
|
485 | a4f81979 | bellard | abort(); |
486 | a4f81979 | bellard | } |
487 | a4f81979 | bellard | } |