root / tcg / arm / tcg-target.c @ 2b71cd72
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/*
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* Tiny Code Generator for QEMU
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*
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* Copyright (c) 2008 Andrzej Zaborowski
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef NDEBUG
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static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { |
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"%r0",
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"%r1",
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"%r2",
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"%r3",
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"%r4",
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"%r5",
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"%r6",
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"%r7",
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"%r8",
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"%r9",
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"%r10",
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"%r11",
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"%r12",
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"%r13",
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"%r14",
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}; |
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#endif
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|
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static const int tcg_target_reg_alloc_order[] = { |
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TCG_REG_R0, |
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TCG_REG_R1, |
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TCG_REG_R2, |
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TCG_REG_R3, |
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TCG_REG_R4, |
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TCG_REG_R5, |
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TCG_REG_R6, |
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TCG_REG_R7, |
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TCG_REG_R8, |
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TCG_REG_R9, |
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TCG_REG_R10, |
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TCG_REG_R11, |
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TCG_REG_R12, |
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TCG_REG_R13, |
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TCG_REG_R14, |
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}; |
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|
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static const int tcg_target_call_iarg_regs[4] = { |
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TCG_REG_R0, TCG_REG_R1, TCG_REG_R2, TCG_REG_R3 |
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}; |
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static const int tcg_target_call_oarg_regs[2] = { |
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TCG_REG_R0, TCG_REG_R1 |
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}; |
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|
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static void patch_reloc(uint8_t *code_ptr, int type, |
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tcg_target_long value, tcg_target_long addend) |
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{
|
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switch (type) {
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case R_ARM_ABS32:
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*(uint32_t *) code_ptr = value; |
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break;
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|
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case R_ARM_CALL:
|
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case R_ARM_JUMP24:
|
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default:
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tcg_abort(); |
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|
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case R_ARM_PC24:
|
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*(uint32_t *) code_ptr = ((*(uint32_t *) code_ptr) & 0xff000000) |
|
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(((value - ((tcg_target_long) code_ptr + 8)) >> 2) & 0xffffff); |
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break;
|
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} |
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} |
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|
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/* maximum number of register used for input function arguments */
|
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static inline int tcg_target_get_call_iarg_regs_count(int flags) |
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{
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return 4; |
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} |
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|
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/* parse target specific constraints */
|
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static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) |
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{
|
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const char *ct_str; |
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|
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ct_str = *pct_str; |
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switch (ct_str[0]) { |
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case 'I': |
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ct->ct |= TCG_CT_CONST_ARM; |
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break;
|
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|
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case 'r': |
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#ifndef CONFIG_SOFTMMU
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case 'd': |
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case 'D': |
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case 'x': |
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case 'X': |
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#endif
|
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ct->ct |= TCG_CT_REG; |
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tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
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break;
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|
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#ifdef CONFIG_SOFTMMU
|
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/* qemu_ld/st inputs (unless 'X', 'd' or 'D') */
|
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case 'x': |
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ct->ct |= TCG_CT_REG; |
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tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
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break;
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|
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/* qemu_ld64 data_reg */
|
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case 'd': |
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ct->ct |= TCG_CT_REG; |
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tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
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/* r1 is still needed to load data_reg2, so don't use it. */
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
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break;
|
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|
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/* qemu_ld/st64 data_reg2 */
|
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case 'D': |
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ct->ct |= TCG_CT_REG; |
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tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
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/* r0, r1 and optionally r2 will be overwritten by the address
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* and the low word of data, so don't use these. */
|
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
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# if TARGET_LONG_BITS == 64 |
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_R2); |
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# endif
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break;
|
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|
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# if TARGET_LONG_BITS == 64 |
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/* qemu_ld/st addr_reg2 */
|
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case 'X': |
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ct->ct |= TCG_CT_REG; |
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tcg_regset_set32(ct->u.regs, 0, (1 << TCG_TARGET_NB_REGS) - 1); |
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/* r0 will be overwritten by the low word of base, so don't use it. */
|
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0); |
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tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1); |
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break;
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# endif
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#endif
|
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|
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default:
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return -1; |
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} |
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ct_str++; |
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*pct_str = ct_str; |
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|
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return 0; |
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} |
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|
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static inline uint32_t rotl(uint32_t val, int n) |
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{
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return (val << n) | (val >> (32 - n)); |
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} |
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|
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/* ARM immediates for ALU instructions are made of an unsigned 8-bit
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right-rotated by an even amount between 0 and 30. */
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static inline int encode_imm(uint32_t imm) |
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{
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int shift;
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|
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/* simple case, only lower bits */
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if ((imm & ~0xff) == 0) |
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return 0; |
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/* then try a simple even shift */
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shift = ctz32(imm) & ~1;
|
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if (((imm >> shift) & ~0xff) == 0) |
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return 32 - shift; |
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/* now try harder with rotations */
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if ((rotl(imm, 2) & ~0xff) == 0) |
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return 2; |
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if ((rotl(imm, 4) & ~0xff) == 0) |
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return 4; |
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if ((rotl(imm, 6) & ~0xff) == 0) |
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return 6; |
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/* imm can't be encoded */
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return -1; |
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} |
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|
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static inline int check_fit_imm(uint32_t imm) |
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{
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return encode_imm(imm) >= 0; |
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} |
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|
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/* Test if a constant matches the constraint.
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* TODO: define constraints for:
|
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*
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* ldr/str offset: between -0xfff and 0xfff
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* ldrh/strh offset: between -0xff and 0xff
|
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* mov operand2: values represented with x << (2 * y), x < 0x100
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* add, sub, eor...: ditto
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*/
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static inline int tcg_target_const_match(tcg_target_long val, |
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const TCGArgConstraint *arg_ct)
|
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{
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int ct;
|
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ct = arg_ct->ct; |
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if (ct & TCG_CT_CONST)
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return 1; |
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else if ((ct & TCG_CT_CONST_ARM) && check_fit_imm(val)) |
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return 1; |
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else
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return 0; |
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} |
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|
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enum arm_data_opc_e {
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ARITH_AND = 0x0,
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ARITH_EOR = 0x1,
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ARITH_SUB = 0x2,
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ARITH_RSB = 0x3,
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ARITH_ADD = 0x4,
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ARITH_ADC = 0x5,
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ARITH_SBC = 0x6,
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ARITH_RSC = 0x7,
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ARITH_TST = 0x8,
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ARITH_CMP = 0xa,
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ARITH_CMN = 0xb,
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ARITH_ORR = 0xc,
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ARITH_MOV = 0xd,
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ARITH_BIC = 0xe,
|
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ARITH_MVN = 0xf,
|
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}; |
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|
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#define TO_CPSR(opc) \
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((opc == ARITH_CMP || opc == ARITH_CMN || opc == ARITH_TST) << 20)
|
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|
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#define SHIFT_IMM_LSL(im) (((im) << 7) | 0x00) |
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#define SHIFT_IMM_LSR(im) (((im) << 7) | 0x20) |
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#define SHIFT_IMM_ASR(im) (((im) << 7) | 0x40) |
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#define SHIFT_IMM_ROR(im) (((im) << 7) | 0x60) |
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#define SHIFT_REG_LSL(rs) (((rs) << 8) | 0x10) |
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#define SHIFT_REG_LSR(rs) (((rs) << 8) | 0x30) |
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#define SHIFT_REG_ASR(rs) (((rs) << 8) | 0x50) |
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#define SHIFT_REG_ROR(rs) (((rs) << 8) | 0x70) |
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|
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enum arm_cond_code_e {
|
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COND_EQ = 0x0,
|
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COND_NE = 0x1,
|
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COND_CS = 0x2, /* Unsigned greater or equal */ |
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COND_CC = 0x3, /* Unsigned less than */ |
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COND_MI = 0x4, /* Negative */ |
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COND_PL = 0x5, /* Zero or greater */ |
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COND_VS = 0x6, /* Overflow */ |
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COND_VC = 0x7, /* No overflow */ |
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COND_HI = 0x8, /* Unsigned greater than */ |
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COND_LS = 0x9, /* Unsigned less or equal */ |
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COND_GE = 0xa,
|
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COND_LT = 0xb,
|
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COND_GT = 0xc,
|
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COND_LE = 0xd,
|
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COND_AL = 0xe,
|
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}; |
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|
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static const uint8_t tcg_cond_to_arm_cond[10] = { |
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[TCG_COND_EQ] = COND_EQ, |
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[TCG_COND_NE] = COND_NE, |
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[TCG_COND_LT] = COND_LT, |
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[TCG_COND_GE] = COND_GE, |
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[TCG_COND_LE] = COND_LE, |
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[TCG_COND_GT] = COND_GT, |
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/* unsigned */
|
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[TCG_COND_LTU] = COND_CC, |
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[TCG_COND_GEU] = COND_CS, |
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[TCG_COND_LEU] = COND_LS, |
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[TCG_COND_GTU] = COND_HI, |
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}; |
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|
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static inline void tcg_out_bx(TCGContext *s, int cond, int rn) |
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{
|
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tcg_out32(s, (cond << 28) | 0x012fff10 | rn); |
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} |
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|
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static inline void tcg_out_b(TCGContext *s, int cond, int32_t offset) |
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{
|
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tcg_out32(s, (cond << 28) | 0x0a000000 | |
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(((offset - 8) >> 2) & 0x00ffffff)); |
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} |
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|
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static inline void tcg_out_b_noaddr(TCGContext *s, int cond) |
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{
|
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#ifdef HOST_WORDS_BIGENDIAN
|
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tcg_out8(s, (cond << 4) | 0x0a); |
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s->code_ptr += 3;
|
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#else
|
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s->code_ptr += 3;
|
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tcg_out8(s, (cond << 4) | 0x0a); |
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#endif
|
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} |
| 307 |
|
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static inline void tcg_out_bl(TCGContext *s, int cond, int32_t offset) |
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{
|
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tcg_out32(s, (cond << 28) | 0x0b000000 | |
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(((offset - 8) >> 2) & 0x00ffffff)); |
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} |
| 313 |
|
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static inline void tcg_out_dat_reg(TCGContext *s, |
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int cond, int opc, int rd, int rn, int rm, int shift) |
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{
|
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tcg_out32(s, (cond << 28) | (0 << 25) | (opc << 21) | TO_CPSR(opc) | |
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(rn << 16) | (rd << 12) | shift | rm); |
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} |
| 320 |
|
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static inline void tcg_out_dat_reg2(TCGContext *s, |
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int cond, int opc0, int opc1, int rd0, int rd1, |
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int rn0, int rn1, int rm0, int rm1, int shift) |
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{
|
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if (rd0 == rn1 || rd0 == rm1) {
|
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tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) | |
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(rn0 << 16) | (8 << 12) | shift | rm0); |
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tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) | |
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(rn1 << 16) | (rd1 << 12) | shift | rm1); |
| 330 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
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rd0, 0, TCG_REG_R8, SHIFT_IMM_LSL(0)); |
| 332 |
} else {
|
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tcg_out32(s, (cond << 28) | (0 << 25) | (opc0 << 21) | (1 << 20) | |
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(rn0 << 16) | (rd0 << 12) | shift | rm0); |
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tcg_out32(s, (cond << 28) | (0 << 25) | (opc1 << 21) | |
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(rn1 << 16) | (rd1 << 12) | shift | rm1); |
| 337 |
} |
| 338 |
} |
| 339 |
|
| 340 |
static inline void tcg_out_dat_imm(TCGContext *s, |
| 341 |
int cond, int opc, int rd, int rn, int im) |
| 342 |
{
|
| 343 |
tcg_out32(s, (cond << 28) | (1 << 25) | (opc << 21) | TO_CPSR(opc) | |
| 344 |
(rn << 16) | (rd << 12) | im); |
| 345 |
} |
| 346 |
|
| 347 |
static inline void tcg_out_movi32(TCGContext *s, |
| 348 |
int cond, int rd, int32_t arg) |
| 349 |
{
|
| 350 |
int offset = (uint32_t) arg - ((uint32_t) s->code_ptr + 8); |
| 351 |
|
| 352 |
/* TODO: This is very suboptimal, we can easily have a constant
|
| 353 |
* pool somewhere after all the instructions. */
|
| 354 |
|
| 355 |
if (arg < 0 && arg > -0x100) |
| 356 |
return tcg_out_dat_imm(s, cond, ARITH_MVN, rd, 0, (~arg) & 0xff); |
| 357 |
|
| 358 |
if (offset < 0x100 && offset > -0x100) |
| 359 |
return offset >= 0 ? |
| 360 |
tcg_out_dat_imm(s, cond, ARITH_ADD, rd, 15, offset) :
|
| 361 |
tcg_out_dat_imm(s, cond, ARITH_SUB, rd, 15, -offset);
|
| 362 |
|
| 363 |
#ifdef __ARM_ARCH_7A__
|
| 364 |
/* use movw/movt */
|
| 365 |
/* movw */
|
| 366 |
tcg_out32(s, (cond << 28) | 0x03000000 | (rd << 12) |
| 367 |
| ((arg << 4) & 0x000f0000) | (arg & 0xfff)); |
| 368 |
if (arg & 0xffff0000) |
| 369 |
/* movt */
|
| 370 |
tcg_out32(s, (cond << 28) | 0x03400000 | (rd << 12) |
| 371 |
| ((arg >> 12) & 0x000f0000) | ((arg >> 16) & 0xfff)); |
| 372 |
#else
|
| 373 |
tcg_out_dat_imm(s, cond, ARITH_MOV, rd, 0, arg & 0xff); |
| 374 |
if (arg & 0x0000ff00) |
| 375 |
tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, |
| 376 |
((arg >> 8) & 0xff) | 0xc00); |
| 377 |
if (arg & 0x00ff0000) |
| 378 |
tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, |
| 379 |
((arg >> 16) & 0xff) | 0x800); |
| 380 |
if (arg & 0xff000000) |
| 381 |
tcg_out_dat_imm(s, cond, ARITH_ORR, rd, rd, |
| 382 |
((arg >> 24) & 0xff) | 0x400); |
| 383 |
#endif
|
| 384 |
} |
| 385 |
|
| 386 |
static inline void tcg_out_mul32(TCGContext *s, |
| 387 |
int cond, int rd, int rs, int rm) |
| 388 |
{
|
| 389 |
if (rd != rm)
|
| 390 |
tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) | |
| 391 |
(rs << 8) | 0x90 | rm); |
| 392 |
else if (rd != rs) |
| 393 |
tcg_out32(s, (cond << 28) | (rd << 16) | (0 << 12) | |
| 394 |
(rm << 8) | 0x90 | rs); |
| 395 |
else {
|
| 396 |
tcg_out32(s, (cond << 28) | ( 8 << 16) | (0 << 12) | |
| 397 |
(rs << 8) | 0x90 | rm); |
| 398 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 399 |
rd, 0, 8, SHIFT_IMM_LSL(0)); |
| 400 |
} |
| 401 |
} |
| 402 |
|
| 403 |
static inline void tcg_out_umull32(TCGContext *s, |
| 404 |
int cond, int rd0, int rd1, int rs, int rm) |
| 405 |
{
|
| 406 |
if (rd0 != rm && rd1 != rm)
|
| 407 |
tcg_out32(s, (cond << 28) | 0x800090 | |
| 408 |
(rd1 << 16) | (rd0 << 12) | (rs << 8) | rm); |
| 409 |
else if (rd0 != rs && rd1 != rs) |
| 410 |
tcg_out32(s, (cond << 28) | 0x800090 | |
| 411 |
(rd1 << 16) | (rd0 << 12) | (rm << 8) | rs); |
| 412 |
else {
|
| 413 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 414 |
TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0)); |
| 415 |
tcg_out32(s, (cond << 28) | 0x800098 | |
| 416 |
(rd1 << 16) | (rd0 << 12) | (rs << 8)); |
| 417 |
} |
| 418 |
} |
| 419 |
|
| 420 |
static inline void tcg_out_smull32(TCGContext *s, |
| 421 |
int cond, int rd0, int rd1, int rs, int rm) |
| 422 |
{
|
| 423 |
if (rd0 != rm && rd1 != rm)
|
| 424 |
tcg_out32(s, (cond << 28) | 0xc00090 | |
| 425 |
(rd1 << 16) | (rd0 << 12) | (rs << 8) | rm); |
| 426 |
else if (rd0 != rs && rd1 != rs) |
| 427 |
tcg_out32(s, (cond << 28) | 0xc00090 | |
| 428 |
(rd1 << 16) | (rd0 << 12) | (rm << 8) | rs); |
| 429 |
else {
|
| 430 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 431 |
TCG_REG_R8, 0, rm, SHIFT_IMM_LSL(0)); |
| 432 |
tcg_out32(s, (cond << 28) | 0xc00098 | |
| 433 |
(rd1 << 16) | (rd0 << 12) | (rs << 8)); |
| 434 |
} |
| 435 |
} |
| 436 |
|
| 437 |
static inline void tcg_out_ld32_12(TCGContext *s, int cond, |
| 438 |
int rd, int rn, tcg_target_long im) |
| 439 |
{
|
| 440 |
if (im >= 0) |
| 441 |
tcg_out32(s, (cond << 28) | 0x05900000 | |
| 442 |
(rn << 16) | (rd << 12) | (im & 0xfff)); |
| 443 |
else
|
| 444 |
tcg_out32(s, (cond << 28) | 0x05100000 | |
| 445 |
(rn << 16) | (rd << 12) | ((-im) & 0xfff)); |
| 446 |
} |
| 447 |
|
| 448 |
static inline void tcg_out_st32_12(TCGContext *s, int cond, |
| 449 |
int rd, int rn, tcg_target_long im) |
| 450 |
{
|
| 451 |
if (im >= 0) |
| 452 |
tcg_out32(s, (cond << 28) | 0x05800000 | |
| 453 |
(rn << 16) | (rd << 12) | (im & 0xfff)); |
| 454 |
else
|
| 455 |
tcg_out32(s, (cond << 28) | 0x05000000 | |
| 456 |
(rn << 16) | (rd << 12) | ((-im) & 0xfff)); |
| 457 |
} |
| 458 |
|
| 459 |
static inline void tcg_out_ld32_r(TCGContext *s, int cond, |
| 460 |
int rd, int rn, int rm) |
| 461 |
{
|
| 462 |
tcg_out32(s, (cond << 28) | 0x07900000 | |
| 463 |
(rn << 16) | (rd << 12) | rm); |
| 464 |
} |
| 465 |
|
| 466 |
static inline void tcg_out_st32_r(TCGContext *s, int cond, |
| 467 |
int rd, int rn, int rm) |
| 468 |
{
|
| 469 |
tcg_out32(s, (cond << 28) | 0x07800000 | |
| 470 |
(rn << 16) | (rd << 12) | rm); |
| 471 |
} |
| 472 |
|
| 473 |
/* Register pre-increment with base writeback. */
|
| 474 |
static inline void tcg_out_ld32_rwb(TCGContext *s, int cond, |
| 475 |
int rd, int rn, int rm) |
| 476 |
{
|
| 477 |
tcg_out32(s, (cond << 28) | 0x07b00000 | |
| 478 |
(rn << 16) | (rd << 12) | rm); |
| 479 |
} |
| 480 |
|
| 481 |
static inline void tcg_out_st32_rwb(TCGContext *s, int cond, |
| 482 |
int rd, int rn, int rm) |
| 483 |
{
|
| 484 |
tcg_out32(s, (cond << 28) | 0x07a00000 | |
| 485 |
(rn << 16) | (rd << 12) | rm); |
| 486 |
} |
| 487 |
|
| 488 |
static inline void tcg_out_ld16u_8(TCGContext *s, int cond, |
| 489 |
int rd, int rn, tcg_target_long im) |
| 490 |
{
|
| 491 |
if (im >= 0) |
| 492 |
tcg_out32(s, (cond << 28) | 0x01d000b0 | |
| 493 |
(rn << 16) | (rd << 12) | |
| 494 |
((im & 0xf0) << 4) | (im & 0xf)); |
| 495 |
else
|
| 496 |
tcg_out32(s, (cond << 28) | 0x015000b0 | |
| 497 |
(rn << 16) | (rd << 12) | |
| 498 |
(((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| 499 |
} |
| 500 |
|
| 501 |
static inline void tcg_out_st16u_8(TCGContext *s, int cond, |
| 502 |
int rd, int rn, tcg_target_long im) |
| 503 |
{
|
| 504 |
if (im >= 0) |
| 505 |
tcg_out32(s, (cond << 28) | 0x01c000b0 | |
| 506 |
(rn << 16) | (rd << 12) | |
| 507 |
((im & 0xf0) << 4) | (im & 0xf)); |
| 508 |
else
|
| 509 |
tcg_out32(s, (cond << 28) | 0x014000b0 | |
| 510 |
(rn << 16) | (rd << 12) | |
| 511 |
(((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| 512 |
} |
| 513 |
|
| 514 |
static inline void tcg_out_ld16u_r(TCGContext *s, int cond, |
| 515 |
int rd, int rn, int rm) |
| 516 |
{
|
| 517 |
tcg_out32(s, (cond << 28) | 0x019000b0 | |
| 518 |
(rn << 16) | (rd << 12) | rm); |
| 519 |
} |
| 520 |
|
| 521 |
static inline void tcg_out_st16u_r(TCGContext *s, int cond, |
| 522 |
int rd, int rn, int rm) |
| 523 |
{
|
| 524 |
tcg_out32(s, (cond << 28) | 0x018000b0 | |
| 525 |
(rn << 16) | (rd << 12) | rm); |
| 526 |
} |
| 527 |
|
| 528 |
static inline void tcg_out_ld16s_8(TCGContext *s, int cond, |
| 529 |
int rd, int rn, tcg_target_long im) |
| 530 |
{
|
| 531 |
if (im >= 0) |
| 532 |
tcg_out32(s, (cond << 28) | 0x01d000f0 | |
| 533 |
(rn << 16) | (rd << 12) | |
| 534 |
((im & 0xf0) << 4) | (im & 0xf)); |
| 535 |
else
|
| 536 |
tcg_out32(s, (cond << 28) | 0x015000f0 | |
| 537 |
(rn << 16) | (rd << 12) | |
| 538 |
(((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| 539 |
} |
| 540 |
|
| 541 |
static inline void tcg_out_st16s_8(TCGContext *s, int cond, |
| 542 |
int rd, int rn, tcg_target_long im) |
| 543 |
{
|
| 544 |
if (im >= 0) |
| 545 |
tcg_out32(s, (cond << 28) | 0x01c000f0 | |
| 546 |
(rn << 16) | (rd << 12) | |
| 547 |
((im & 0xf0) << 4) | (im & 0xf)); |
| 548 |
else
|
| 549 |
tcg_out32(s, (cond << 28) | 0x014000f0 | |
| 550 |
(rn << 16) | (rd << 12) | |
| 551 |
(((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| 552 |
} |
| 553 |
|
| 554 |
static inline void tcg_out_ld16s_r(TCGContext *s, int cond, |
| 555 |
int rd, int rn, int rm) |
| 556 |
{
|
| 557 |
tcg_out32(s, (cond << 28) | 0x019000f0 | |
| 558 |
(rn << 16) | (rd << 12) | rm); |
| 559 |
} |
| 560 |
|
| 561 |
static inline void tcg_out_st16s_r(TCGContext *s, int cond, |
| 562 |
int rd, int rn, int rm) |
| 563 |
{
|
| 564 |
tcg_out32(s, (cond << 28) | 0x018000f0 | |
| 565 |
(rn << 16) | (rd << 12) | rm); |
| 566 |
} |
| 567 |
|
| 568 |
static inline void tcg_out_ld8_12(TCGContext *s, int cond, |
| 569 |
int rd, int rn, tcg_target_long im) |
| 570 |
{
|
| 571 |
if (im >= 0) |
| 572 |
tcg_out32(s, (cond << 28) | 0x05d00000 | |
| 573 |
(rn << 16) | (rd << 12) | (im & 0xfff)); |
| 574 |
else
|
| 575 |
tcg_out32(s, (cond << 28) | 0x05500000 | |
| 576 |
(rn << 16) | (rd << 12) | ((-im) & 0xfff)); |
| 577 |
} |
| 578 |
|
| 579 |
static inline void tcg_out_st8_12(TCGContext *s, int cond, |
| 580 |
int rd, int rn, tcg_target_long im) |
| 581 |
{
|
| 582 |
if (im >= 0) |
| 583 |
tcg_out32(s, (cond << 28) | 0x05c00000 | |
| 584 |
(rn << 16) | (rd << 12) | (im & 0xfff)); |
| 585 |
else
|
| 586 |
tcg_out32(s, (cond << 28) | 0x05400000 | |
| 587 |
(rn << 16) | (rd << 12) | ((-im) & 0xfff)); |
| 588 |
} |
| 589 |
|
| 590 |
static inline void tcg_out_ld8_r(TCGContext *s, int cond, |
| 591 |
int rd, int rn, int rm) |
| 592 |
{
|
| 593 |
tcg_out32(s, (cond << 28) | 0x07d00000 | |
| 594 |
(rn << 16) | (rd << 12) | rm); |
| 595 |
} |
| 596 |
|
| 597 |
static inline void tcg_out_st8_r(TCGContext *s, int cond, |
| 598 |
int rd, int rn, int rm) |
| 599 |
{
|
| 600 |
tcg_out32(s, (cond << 28) | 0x07c00000 | |
| 601 |
(rn << 16) | (rd << 12) | rm); |
| 602 |
} |
| 603 |
|
| 604 |
static inline void tcg_out_ld8s_8(TCGContext *s, int cond, |
| 605 |
int rd, int rn, tcg_target_long im) |
| 606 |
{
|
| 607 |
if (im >= 0) |
| 608 |
tcg_out32(s, (cond << 28) | 0x01d000d0 | |
| 609 |
(rn << 16) | (rd << 12) | |
| 610 |
((im & 0xf0) << 4) | (im & 0xf)); |
| 611 |
else
|
| 612 |
tcg_out32(s, (cond << 28) | 0x015000d0 | |
| 613 |
(rn << 16) | (rd << 12) | |
| 614 |
(((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| 615 |
} |
| 616 |
|
| 617 |
static inline void tcg_out_st8s_8(TCGContext *s, int cond, |
| 618 |
int rd, int rn, tcg_target_long im) |
| 619 |
{
|
| 620 |
if (im >= 0) |
| 621 |
tcg_out32(s, (cond << 28) | 0x01c000d0 | |
| 622 |
(rn << 16) | (rd << 12) | |
| 623 |
((im & 0xf0) << 4) | (im & 0xf)); |
| 624 |
else
|
| 625 |
tcg_out32(s, (cond << 28) | 0x014000d0 | |
| 626 |
(rn << 16) | (rd << 12) | |
| 627 |
(((-im) & 0xf0) << 4) | ((-im) & 0xf)); |
| 628 |
} |
| 629 |
|
| 630 |
static inline void tcg_out_ld8s_r(TCGContext *s, int cond, |
| 631 |
int rd, int rn, int rm) |
| 632 |
{
|
| 633 |
tcg_out32(s, (cond << 28) | 0x019000d0 | |
| 634 |
(rn << 16) | (rd << 12) | rm); |
| 635 |
} |
| 636 |
|
| 637 |
static inline void tcg_out_st8s_r(TCGContext *s, int cond, |
| 638 |
int rd, int rn, int rm) |
| 639 |
{
|
| 640 |
tcg_out32(s, (cond << 28) | 0x018000d0 | |
| 641 |
(rn << 16) | (rd << 12) | rm); |
| 642 |
} |
| 643 |
|
| 644 |
static inline void tcg_out_ld32u(TCGContext *s, int cond, |
| 645 |
int rd, int rn, int32_t offset) |
| 646 |
{
|
| 647 |
if (offset > 0xfff || offset < -0xfff) { |
| 648 |
tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| 649 |
tcg_out_ld32_r(s, cond, rd, rn, TCG_REG_R8); |
| 650 |
} else
|
| 651 |
tcg_out_ld32_12(s, cond, rd, rn, offset); |
| 652 |
} |
| 653 |
|
| 654 |
static inline void tcg_out_st32(TCGContext *s, int cond, |
| 655 |
int rd, int rn, int32_t offset) |
| 656 |
{
|
| 657 |
if (offset > 0xfff || offset < -0xfff) { |
| 658 |
tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| 659 |
tcg_out_st32_r(s, cond, rd, rn, TCG_REG_R8); |
| 660 |
} else
|
| 661 |
tcg_out_st32_12(s, cond, rd, rn, offset); |
| 662 |
} |
| 663 |
|
| 664 |
static inline void tcg_out_ld16u(TCGContext *s, int cond, |
| 665 |
int rd, int rn, int32_t offset) |
| 666 |
{
|
| 667 |
if (offset > 0xff || offset < -0xff) { |
| 668 |
tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| 669 |
tcg_out_ld16u_r(s, cond, rd, rn, TCG_REG_R8); |
| 670 |
} else
|
| 671 |
tcg_out_ld16u_8(s, cond, rd, rn, offset); |
| 672 |
} |
| 673 |
|
| 674 |
static inline void tcg_out_ld16s(TCGContext *s, int cond, |
| 675 |
int rd, int rn, int32_t offset) |
| 676 |
{
|
| 677 |
if (offset > 0xff || offset < -0xff) { |
| 678 |
tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| 679 |
tcg_out_ld16s_r(s, cond, rd, rn, TCG_REG_R8); |
| 680 |
} else
|
| 681 |
tcg_out_ld16s_8(s, cond, rd, rn, offset); |
| 682 |
} |
| 683 |
|
| 684 |
static inline void tcg_out_st16u(TCGContext *s, int cond, |
| 685 |
int rd, int rn, int32_t offset) |
| 686 |
{
|
| 687 |
if (offset > 0xff || offset < -0xff) { |
| 688 |
tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| 689 |
tcg_out_st16u_r(s, cond, rd, rn, TCG_REG_R8); |
| 690 |
} else
|
| 691 |
tcg_out_st16u_8(s, cond, rd, rn, offset); |
| 692 |
} |
| 693 |
|
| 694 |
static inline void tcg_out_ld8u(TCGContext *s, int cond, |
| 695 |
int rd, int rn, int32_t offset) |
| 696 |
{
|
| 697 |
if (offset > 0xfff || offset < -0xfff) { |
| 698 |
tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| 699 |
tcg_out_ld8_r(s, cond, rd, rn, TCG_REG_R8); |
| 700 |
} else
|
| 701 |
tcg_out_ld8_12(s, cond, rd, rn, offset); |
| 702 |
} |
| 703 |
|
| 704 |
static inline void tcg_out_ld8s(TCGContext *s, int cond, |
| 705 |
int rd, int rn, int32_t offset) |
| 706 |
{
|
| 707 |
if (offset > 0xff || offset < -0xff) { |
| 708 |
tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| 709 |
tcg_out_ld8s_r(s, cond, rd, rn, TCG_REG_R8); |
| 710 |
} else
|
| 711 |
tcg_out_ld8s_8(s, cond, rd, rn, offset); |
| 712 |
} |
| 713 |
|
| 714 |
static inline void tcg_out_st8u(TCGContext *s, int cond, |
| 715 |
int rd, int rn, int32_t offset) |
| 716 |
{
|
| 717 |
if (offset > 0xfff || offset < -0xfff) { |
| 718 |
tcg_out_movi32(s, cond, TCG_REG_R8, offset); |
| 719 |
tcg_out_st8_r(s, cond, rd, rn, TCG_REG_R8); |
| 720 |
} else
|
| 721 |
tcg_out_st8_12(s, cond, rd, rn, offset); |
| 722 |
} |
| 723 |
|
| 724 |
static inline void tcg_out_goto(TCGContext *s, int cond, uint32_t addr) |
| 725 |
{
|
| 726 |
int32_t val; |
| 727 |
|
| 728 |
val = addr - (tcg_target_long) s->code_ptr; |
| 729 |
if (val - 8 < 0x01fffffd && val - 8 > -0x01fffffd) |
| 730 |
tcg_out_b(s, cond, val); |
| 731 |
else {
|
| 732 |
#if 1 |
| 733 |
tcg_abort(); |
| 734 |
#else
|
| 735 |
if (cond == COND_AL) {
|
| 736 |
tcg_out_ld32_12(s, COND_AL, 15, 15, -4); |
| 737 |
tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */
|
| 738 |
} else {
|
| 739 |
tcg_out_movi32(s, cond, TCG_REG_R8, val - 8);
|
| 740 |
tcg_out_dat_reg(s, cond, ARITH_ADD, |
| 741 |
15, 15, TCG_REG_R8, SHIFT_IMM_LSL(0)); |
| 742 |
} |
| 743 |
#endif
|
| 744 |
} |
| 745 |
} |
| 746 |
|
| 747 |
static inline void tcg_out_call(TCGContext *s, int cond, uint32_t addr) |
| 748 |
{
|
| 749 |
int32_t val; |
| 750 |
|
| 751 |
#ifdef SAVE_LR
|
| 752 |
tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R8, 0, 14, SHIFT_IMM_LSL(0)); |
| 753 |
#endif
|
| 754 |
|
| 755 |
val = addr - (tcg_target_long) s->code_ptr; |
| 756 |
if (val < 0x01fffffd && val > -0x01fffffd) |
| 757 |
tcg_out_bl(s, cond, val); |
| 758 |
else {
|
| 759 |
#if 1 |
| 760 |
tcg_abort(); |
| 761 |
#else
|
| 762 |
if (cond == COND_AL) {
|
| 763 |
tcg_out_dat_imm(s, cond, ARITH_ADD, 14, 15, 4); |
| 764 |
tcg_out_ld32_12(s, COND_AL, 15, 15, -4); |
| 765 |
tcg_out32(s, addr); /* XXX: This is l->u.value, can we use it? */
|
| 766 |
} else {
|
| 767 |
tcg_out_movi32(s, cond, TCG_REG_R9, addr); |
| 768 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 14, 0, 15); |
| 769 |
tcg_out_bx(s, cond, TCG_REG_R9); |
| 770 |
} |
| 771 |
#endif
|
| 772 |
} |
| 773 |
|
| 774 |
#ifdef SAVE_LR
|
| 775 |
tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, TCG_REG_R8, SHIFT_IMM_LSL(0)); |
| 776 |
#endif
|
| 777 |
} |
| 778 |
|
| 779 |
static inline void tcg_out_callr(TCGContext *s, int cond, int arg) |
| 780 |
{
|
| 781 |
#ifdef SAVE_LR
|
| 782 |
tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R8, 0, 14, SHIFT_IMM_LSL(0)); |
| 783 |
#endif
|
| 784 |
/* TODO: on ARMv5 and ARMv6 replace with tcg_out_blx(s, cond, arg); */
|
| 785 |
tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 15, SHIFT_IMM_LSL(0)); |
| 786 |
tcg_out_bx(s, cond, arg); |
| 787 |
#ifdef SAVE_LR
|
| 788 |
tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, TCG_REG_R8, SHIFT_IMM_LSL(0)); |
| 789 |
#endif
|
| 790 |
} |
| 791 |
|
| 792 |
static inline void tcg_out_goto_label(TCGContext *s, int cond, int label_index) |
| 793 |
{
|
| 794 |
TCGLabel *l = &s->labels[label_index]; |
| 795 |
|
| 796 |
if (l->has_value)
|
| 797 |
tcg_out_goto(s, cond, l->u.value); |
| 798 |
else if (cond == COND_AL) { |
| 799 |
tcg_out_ld32_12(s, COND_AL, 15, 15, -4); |
| 800 |
tcg_out_reloc(s, s->code_ptr, R_ARM_ABS32, label_index, 31337);
|
| 801 |
s->code_ptr += 4;
|
| 802 |
} else {
|
| 803 |
/* Probably this should be preferred even for COND_AL... */
|
| 804 |
tcg_out_reloc(s, s->code_ptr, R_ARM_PC24, label_index, 31337);
|
| 805 |
tcg_out_b_noaddr(s, cond); |
| 806 |
} |
| 807 |
} |
| 808 |
|
| 809 |
#ifdef CONFIG_SOFTMMU
|
| 810 |
|
| 811 |
#include "../../softmmu_defs.h" |
| 812 |
|
| 813 |
static void *qemu_ld_helpers[4] = { |
| 814 |
__ldb_mmu, |
| 815 |
__ldw_mmu, |
| 816 |
__ldl_mmu, |
| 817 |
__ldq_mmu, |
| 818 |
}; |
| 819 |
|
| 820 |
static void *qemu_st_helpers[4] = { |
| 821 |
__stb_mmu, |
| 822 |
__stw_mmu, |
| 823 |
__stl_mmu, |
| 824 |
__stq_mmu, |
| 825 |
}; |
| 826 |
#endif
|
| 827 |
|
| 828 |
#define TLB_SHIFT (CPU_TLB_ENTRY_BITS + CPU_TLB_BITS)
|
| 829 |
|
| 830 |
static inline void tcg_out_qemu_ld(TCGContext *s, int cond, |
| 831 |
const TCGArg *args, int opc) |
| 832 |
{
|
| 833 |
int addr_reg, data_reg, data_reg2;
|
| 834 |
#ifdef CONFIG_SOFTMMU
|
| 835 |
int mem_index, s_bits;
|
| 836 |
# if TARGET_LONG_BITS == 64 |
| 837 |
int addr_reg2;
|
| 838 |
# endif
|
| 839 |
uint32_t *label_ptr; |
| 840 |
#endif
|
| 841 |
|
| 842 |
data_reg = *args++; |
| 843 |
if (opc == 3) |
| 844 |
data_reg2 = *args++; |
| 845 |
else
|
| 846 |
data_reg2 = 0; /* suppress warning */ |
| 847 |
addr_reg = *args++; |
| 848 |
#ifdef CONFIG_SOFTMMU
|
| 849 |
# if TARGET_LONG_BITS == 64 |
| 850 |
addr_reg2 = *args++; |
| 851 |
# endif
|
| 852 |
mem_index = *args; |
| 853 |
s_bits = opc & 3;
|
| 854 |
|
| 855 |
/* Should generate something like the following:
|
| 856 |
* shr r8, addr_reg, #TARGET_PAGE_BITS
|
| 857 |
* and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
|
| 858 |
* add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
|
| 859 |
*/
|
| 860 |
# if CPU_TLB_BITS > 8 |
| 861 |
# error
|
| 862 |
# endif
|
| 863 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 864 |
8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS)); |
| 865 |
tcg_out_dat_imm(s, COND_AL, ARITH_AND, |
| 866 |
0, 8, CPU_TLB_SIZE - 1); |
| 867 |
tcg_out_dat_reg(s, COND_AL, ARITH_ADD, |
| 868 |
0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS)); |
| 869 |
/* In the
|
| 870 |
* ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_read))]
|
| 871 |
* below, the offset is likely to exceed 12 bits if mem_index != 0 and
|
| 872 |
* not exceed otherwise, so use an
|
| 873 |
* add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
|
| 874 |
* before.
|
| 875 |
*/
|
| 876 |
if (mem_index)
|
| 877 |
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0, |
| 878 |
(mem_index << (TLB_SHIFT & 1)) |
|
| 879 |
((16 - (TLB_SHIFT >> 1)) << 8)); |
| 880 |
tcg_out_ld32_12(s, COND_AL, 1, 0, |
| 881 |
offsetof(CPUState, tlb_table[0][0].addr_read)); |
| 882 |
tcg_out_dat_reg(s, COND_AL, ARITH_CMP, |
| 883 |
0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS)); |
| 884 |
/* Check alignment. */
|
| 885 |
if (s_bits)
|
| 886 |
tcg_out_dat_imm(s, COND_EQ, ARITH_TST, |
| 887 |
0, addr_reg, (1 << s_bits) - 1); |
| 888 |
# if TARGET_LONG_BITS == 64 |
| 889 |
/* XXX: possibly we could use a block data load or writeback in
|
| 890 |
* the first access. */
|
| 891 |
tcg_out_ld32_12(s, COND_EQ, 1, 0, |
| 892 |
offsetof(CPUState, tlb_table[0][0].addr_read) + 4); |
| 893 |
tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, |
| 894 |
0, 1, addr_reg2, SHIFT_IMM_LSL(0)); |
| 895 |
# endif
|
| 896 |
tcg_out_ld32_12(s, COND_EQ, 1, 0, |
| 897 |
offsetof(CPUState, tlb_table[0][0].addend)); |
| 898 |
|
| 899 |
switch (opc) {
|
| 900 |
case 0: |
| 901 |
tcg_out_ld8_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 902 |
break;
|
| 903 |
case 0 | 4: |
| 904 |
tcg_out_ld8s_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 905 |
break;
|
| 906 |
case 1: |
| 907 |
tcg_out_ld16u_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 908 |
break;
|
| 909 |
case 1 | 4: |
| 910 |
tcg_out_ld16s_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 911 |
break;
|
| 912 |
case 2: |
| 913 |
default:
|
| 914 |
tcg_out_ld32_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 915 |
break;
|
| 916 |
case 3: |
| 917 |
tcg_out_ld32_rwb(s, COND_EQ, data_reg, 1, addr_reg);
|
| 918 |
tcg_out_ld32_12(s, COND_EQ, data_reg2, 1, 4); |
| 919 |
break;
|
| 920 |
} |
| 921 |
|
| 922 |
label_ptr = (void *) s->code_ptr;
|
| 923 |
tcg_out_b(s, COND_EQ, 8);
|
| 924 |
|
| 925 |
# ifdef SAVE_LR
|
| 926 |
tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0)); |
| 927 |
# endif
|
| 928 |
|
| 929 |
/* TODO: move this code to where the constants pool will be */
|
| 930 |
if (addr_reg)
|
| 931 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 932 |
0, 0, addr_reg, SHIFT_IMM_LSL(0)); |
| 933 |
# if TARGET_LONG_BITS == 32 |
| 934 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 1, 0, mem_index); |
| 935 |
# else
|
| 936 |
if (addr_reg2 != 1) |
| 937 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 938 |
1, 0, addr_reg2, SHIFT_IMM_LSL(0)); |
| 939 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index); |
| 940 |
# endif
|
| 941 |
tcg_out_bl(s, cond, (tcg_target_long) qemu_ld_helpers[s_bits] - |
| 942 |
(tcg_target_long) s->code_ptr); |
| 943 |
|
| 944 |
switch (opc) {
|
| 945 |
case 0 | 4: |
| 946 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 947 |
0, 0, 0, SHIFT_IMM_LSL(24)); |
| 948 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 949 |
data_reg, 0, 0, SHIFT_IMM_ASR(24)); |
| 950 |
break;
|
| 951 |
case 1 | 4: |
| 952 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 953 |
0, 0, 0, SHIFT_IMM_LSL(16)); |
| 954 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 955 |
data_reg, 0, 0, SHIFT_IMM_ASR(16)); |
| 956 |
break;
|
| 957 |
case 0: |
| 958 |
case 1: |
| 959 |
case 2: |
| 960 |
default:
|
| 961 |
if (data_reg)
|
| 962 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 963 |
data_reg, 0, 0, SHIFT_IMM_LSL(0)); |
| 964 |
break;
|
| 965 |
case 3: |
| 966 |
if (data_reg != 0) |
| 967 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 968 |
data_reg, 0, 0, SHIFT_IMM_LSL(0)); |
| 969 |
if (data_reg2 != 1) |
| 970 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 971 |
data_reg2, 0, 1, SHIFT_IMM_LSL(0)); |
| 972 |
break;
|
| 973 |
} |
| 974 |
|
| 975 |
# ifdef SAVE_LR
|
| 976 |
tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0)); |
| 977 |
# endif
|
| 978 |
|
| 979 |
*label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2; |
| 980 |
#else /* !CONFIG_SOFTMMU */ |
| 981 |
if (GUEST_BASE) {
|
| 982 |
uint32_t offset = GUEST_BASE; |
| 983 |
int i;
|
| 984 |
int rot;
|
| 985 |
|
| 986 |
while (offset) {
|
| 987 |
i = ctz32(offset) & ~1;
|
| 988 |
rot = ((32 - i) << 7) & 0xf00; |
| 989 |
|
| 990 |
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
|
| 991 |
((offset >> i) & 0xff) | rot);
|
| 992 |
addr_reg = 8;
|
| 993 |
offset &= ~(0xff << i);
|
| 994 |
} |
| 995 |
} |
| 996 |
switch (opc) {
|
| 997 |
case 0: |
| 998 |
tcg_out_ld8_12(s, COND_AL, data_reg, addr_reg, 0);
|
| 999 |
break;
|
| 1000 |
case 0 | 4: |
| 1001 |
tcg_out_ld8s_8(s, COND_AL, data_reg, addr_reg, 0);
|
| 1002 |
break;
|
| 1003 |
case 1: |
| 1004 |
tcg_out_ld16u_8(s, COND_AL, data_reg, addr_reg, 0);
|
| 1005 |
break;
|
| 1006 |
case 1 | 4: |
| 1007 |
tcg_out_ld16s_8(s, COND_AL, data_reg, addr_reg, 0);
|
| 1008 |
break;
|
| 1009 |
case 2: |
| 1010 |
default:
|
| 1011 |
tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
|
| 1012 |
break;
|
| 1013 |
case 3: |
| 1014 |
/* TODO: use block load -
|
| 1015 |
* check that data_reg2 > data_reg or the other way */
|
| 1016 |
if (data_reg == addr_reg) {
|
| 1017 |
tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);
|
| 1018 |
tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
|
| 1019 |
} else {
|
| 1020 |
tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
|
| 1021 |
tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);
|
| 1022 |
} |
| 1023 |
break;
|
| 1024 |
} |
| 1025 |
#endif
|
| 1026 |
} |
| 1027 |
|
| 1028 |
static inline void tcg_out_qemu_st(TCGContext *s, int cond, |
| 1029 |
const TCGArg *args, int opc) |
| 1030 |
{
|
| 1031 |
int addr_reg, data_reg, data_reg2;
|
| 1032 |
#ifdef CONFIG_SOFTMMU
|
| 1033 |
int mem_index, s_bits;
|
| 1034 |
# if TARGET_LONG_BITS == 64 |
| 1035 |
int addr_reg2;
|
| 1036 |
# endif
|
| 1037 |
uint32_t *label_ptr; |
| 1038 |
#endif
|
| 1039 |
|
| 1040 |
data_reg = *args++; |
| 1041 |
if (opc == 3) |
| 1042 |
data_reg2 = *args++; |
| 1043 |
else
|
| 1044 |
data_reg2 = 0; /* suppress warning */ |
| 1045 |
addr_reg = *args++; |
| 1046 |
#ifdef CONFIG_SOFTMMU
|
| 1047 |
# if TARGET_LONG_BITS == 64 |
| 1048 |
addr_reg2 = *args++; |
| 1049 |
# endif
|
| 1050 |
mem_index = *args; |
| 1051 |
s_bits = opc & 3;
|
| 1052 |
|
| 1053 |
/* Should generate something like the following:
|
| 1054 |
* shr r8, addr_reg, #TARGET_PAGE_BITS
|
| 1055 |
* and r0, r8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
|
| 1056 |
* add r0, env, r0 lsl #CPU_TLB_ENTRY_BITS
|
| 1057 |
*/
|
| 1058 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 1059 |
8, 0, addr_reg, SHIFT_IMM_LSR(TARGET_PAGE_BITS)); |
| 1060 |
tcg_out_dat_imm(s, COND_AL, ARITH_AND, |
| 1061 |
0, 8, CPU_TLB_SIZE - 1); |
| 1062 |
tcg_out_dat_reg(s, COND_AL, ARITH_ADD, |
| 1063 |
0, TCG_AREG0, 0, SHIFT_IMM_LSL(CPU_TLB_ENTRY_BITS)); |
| 1064 |
/* In the
|
| 1065 |
* ldr r1 [r0, #(offsetof(CPUState, tlb_table[mem_index][0].addr_write))]
|
| 1066 |
* below, the offset is likely to exceed 12 bits if mem_index != 0 and
|
| 1067 |
* not exceed otherwise, so use an
|
| 1068 |
* add r0, r0, #(mem_index * sizeof *CPUState.tlb_table)
|
| 1069 |
* before.
|
| 1070 |
*/
|
| 1071 |
if (mem_index)
|
| 1072 |
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 0, 0, |
| 1073 |
(mem_index << (TLB_SHIFT & 1)) |
|
| 1074 |
((16 - (TLB_SHIFT >> 1)) << 8)); |
| 1075 |
tcg_out_ld32_12(s, COND_AL, 1, 0, |
| 1076 |
offsetof(CPUState, tlb_table[0][0].addr_write)); |
| 1077 |
tcg_out_dat_reg(s, COND_AL, ARITH_CMP, |
| 1078 |
0, 1, 8, SHIFT_IMM_LSL(TARGET_PAGE_BITS)); |
| 1079 |
/* Check alignment. */
|
| 1080 |
if (s_bits)
|
| 1081 |
tcg_out_dat_imm(s, COND_EQ, ARITH_TST, |
| 1082 |
0, addr_reg, (1 << s_bits) - 1); |
| 1083 |
# if TARGET_LONG_BITS == 64 |
| 1084 |
/* XXX: possibly we could use a block data load or writeback in
|
| 1085 |
* the first access. */
|
| 1086 |
tcg_out_ld32_12(s, COND_EQ, 1, 0, |
| 1087 |
offsetof(CPUState, tlb_table[0][0].addr_write) |
| 1088 |
+ 4);
|
| 1089 |
tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, |
| 1090 |
0, 1, addr_reg2, SHIFT_IMM_LSL(0)); |
| 1091 |
# endif
|
| 1092 |
tcg_out_ld32_12(s, COND_EQ, 1, 0, |
| 1093 |
offsetof(CPUState, tlb_table[0][0].addend)); |
| 1094 |
|
| 1095 |
switch (opc) {
|
| 1096 |
case 0: |
| 1097 |
tcg_out_st8_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 1098 |
break;
|
| 1099 |
case 0 | 4: |
| 1100 |
tcg_out_st8s_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 1101 |
break;
|
| 1102 |
case 1: |
| 1103 |
tcg_out_st16u_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 1104 |
break;
|
| 1105 |
case 1 | 4: |
| 1106 |
tcg_out_st16s_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 1107 |
break;
|
| 1108 |
case 2: |
| 1109 |
default:
|
| 1110 |
tcg_out_st32_r(s, COND_EQ, data_reg, addr_reg, 1);
|
| 1111 |
break;
|
| 1112 |
case 3: |
| 1113 |
tcg_out_st32_rwb(s, COND_EQ, data_reg, 1, addr_reg);
|
| 1114 |
tcg_out_st32_12(s, COND_EQ, data_reg2, 1, 4); |
| 1115 |
break;
|
| 1116 |
} |
| 1117 |
|
| 1118 |
label_ptr = (void *) s->code_ptr;
|
| 1119 |
tcg_out_b(s, COND_EQ, 8);
|
| 1120 |
|
| 1121 |
/* TODO: move this code to where the constants pool will be */
|
| 1122 |
if (addr_reg)
|
| 1123 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1124 |
0, 0, addr_reg, SHIFT_IMM_LSL(0)); |
| 1125 |
# if TARGET_LONG_BITS == 32 |
| 1126 |
switch (opc) {
|
| 1127 |
case 0: |
| 1128 |
tcg_out_dat_imm(s, cond, ARITH_AND, 1, data_reg, 0xff); |
| 1129 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index); |
| 1130 |
break;
|
| 1131 |
case 1: |
| 1132 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1133 |
1, 0, data_reg, SHIFT_IMM_LSL(16)); |
| 1134 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1135 |
1, 0, 1, SHIFT_IMM_LSR(16)); |
| 1136 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index); |
| 1137 |
break;
|
| 1138 |
case 2: |
| 1139 |
if (data_reg != 1) |
| 1140 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1141 |
1, 0, data_reg, SHIFT_IMM_LSL(0)); |
| 1142 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 2, 0, mem_index); |
| 1143 |
break;
|
| 1144 |
case 3: |
| 1145 |
if (data_reg != 1) |
| 1146 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1147 |
1, 0, data_reg, SHIFT_IMM_LSL(0)); |
| 1148 |
if (data_reg2 != 2) |
| 1149 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1150 |
2, 0, data_reg2, SHIFT_IMM_LSL(0)); |
| 1151 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index); |
| 1152 |
break;
|
| 1153 |
} |
| 1154 |
# else
|
| 1155 |
if (addr_reg2 != 1) |
| 1156 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1157 |
1, 0, addr_reg2, SHIFT_IMM_LSL(0)); |
| 1158 |
switch (opc) {
|
| 1159 |
case 0: |
| 1160 |
tcg_out_dat_imm(s, cond, ARITH_AND, 2, data_reg, 0xff); |
| 1161 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index); |
| 1162 |
break;
|
| 1163 |
case 1: |
| 1164 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1165 |
2, 0, data_reg, SHIFT_IMM_LSL(16)); |
| 1166 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1167 |
2, 0, 2, SHIFT_IMM_LSR(16)); |
| 1168 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index); |
| 1169 |
break;
|
| 1170 |
case 2: |
| 1171 |
if (data_reg != 2) |
| 1172 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1173 |
2, 0, data_reg, SHIFT_IMM_LSL(0)); |
| 1174 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 3, 0, mem_index); |
| 1175 |
break;
|
| 1176 |
case 3: |
| 1177 |
tcg_out_dat_imm(s, cond, ARITH_MOV, 8, 0, mem_index); |
| 1178 |
tcg_out32(s, (cond << 28) | 0x052d8010); /* str r8, [sp, #-0x10]! */ |
| 1179 |
if (data_reg != 2) |
| 1180 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1181 |
2, 0, data_reg, SHIFT_IMM_LSL(0)); |
| 1182 |
if (data_reg2 != 3) |
| 1183 |
tcg_out_dat_reg(s, cond, ARITH_MOV, |
| 1184 |
3, 0, data_reg2, SHIFT_IMM_LSL(0)); |
| 1185 |
break;
|
| 1186 |
} |
| 1187 |
# endif
|
| 1188 |
|
| 1189 |
# ifdef SAVE_LR
|
| 1190 |
tcg_out_dat_reg(s, cond, ARITH_MOV, 8, 0, 14, SHIFT_IMM_LSL(0)); |
| 1191 |
# endif
|
| 1192 |
|
| 1193 |
tcg_out_bl(s, cond, (tcg_target_long) qemu_st_helpers[s_bits] - |
| 1194 |
(tcg_target_long) s->code_ptr); |
| 1195 |
# if TARGET_LONG_BITS == 64 |
| 1196 |
if (opc == 3) |
| 1197 |
tcg_out_dat_imm(s, cond, ARITH_ADD, 13, 13, 0x10); |
| 1198 |
# endif
|
| 1199 |
|
| 1200 |
# ifdef SAVE_LR
|
| 1201 |
tcg_out_dat_reg(s, cond, ARITH_MOV, 14, 0, 8, SHIFT_IMM_LSL(0)); |
| 1202 |
# endif
|
| 1203 |
|
| 1204 |
*label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2; |
| 1205 |
#else /* !CONFIG_SOFTMMU */ |
| 1206 |
if (GUEST_BASE) {
|
| 1207 |
uint32_t offset = GUEST_BASE; |
| 1208 |
int i;
|
| 1209 |
int rot;
|
| 1210 |
|
| 1211 |
while (offset) {
|
| 1212 |
i = ctz32(offset) & ~1;
|
| 1213 |
rot = ((32 - i) << 7) & 0xf00; |
| 1214 |
|
| 1215 |
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
|
| 1216 |
((offset >> i) & 0xff) | rot);
|
| 1217 |
addr_reg = 8;
|
| 1218 |
offset &= ~(0xff << i);
|
| 1219 |
} |
| 1220 |
} |
| 1221 |
switch (opc) {
|
| 1222 |
case 0: |
| 1223 |
tcg_out_st8_12(s, COND_AL, data_reg, addr_reg, 0);
|
| 1224 |
break;
|
| 1225 |
case 0 | 4: |
| 1226 |
tcg_out_st8s_8(s, COND_AL, data_reg, addr_reg, 0);
|
| 1227 |
break;
|
| 1228 |
case 1: |
| 1229 |
tcg_out_st16u_8(s, COND_AL, data_reg, addr_reg, 0);
|
| 1230 |
break;
|
| 1231 |
case 1 | 4: |
| 1232 |
tcg_out_st16s_8(s, COND_AL, data_reg, addr_reg, 0);
|
| 1233 |
break;
|
| 1234 |
case 2: |
| 1235 |
default:
|
| 1236 |
tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
|
| 1237 |
break;
|
| 1238 |
case 3: |
| 1239 |
/* TODO: use block store -
|
| 1240 |
* check that data_reg2 > data_reg or the other way */
|
| 1241 |
tcg_out_st32_12(s, COND_AL, data_reg, addr_reg, 0);
|
| 1242 |
tcg_out_st32_12(s, COND_AL, data_reg2, addr_reg, 4);
|
| 1243 |
break;
|
| 1244 |
} |
| 1245 |
#endif
|
| 1246 |
} |
| 1247 |
|
| 1248 |
static uint8_t *tb_ret_addr;
|
| 1249 |
|
| 1250 |
static inline void tcg_out_op(TCGContext *s, int opc, |
| 1251 |
const TCGArg *args, const int *const_args) |
| 1252 |
{
|
| 1253 |
int c;
|
| 1254 |
|
| 1255 |
switch (opc) {
|
| 1256 |
case INDEX_op_exit_tb:
|
| 1257 |
#ifdef SAVE_LR
|
| 1258 |
if (args[0] >> 8) |
| 1259 |
tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0); |
| 1260 |
else
|
| 1261 |
tcg_out_dat_imm(s, COND_AL, ARITH_MOV, TCG_REG_R0, 0, args[0]); |
| 1262 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, 15, 0, 14, SHIFT_IMM_LSL(0)); |
| 1263 |
if (args[0] >> 8) |
| 1264 |
tcg_out32(s, args[0]);
|
| 1265 |
#else
|
| 1266 |
{
|
| 1267 |
uint8_t *ld_ptr = s->code_ptr; |
| 1268 |
if (args[0] >> 8) |
| 1269 |
tcg_out_ld32_12(s, COND_AL, 0, 15, 0); |
| 1270 |
else
|
| 1271 |
tcg_out_dat_imm(s, COND_AL, ARITH_MOV, 0, 0, args[0]); |
| 1272 |
tcg_out_goto(s, COND_AL, (tcg_target_ulong) tb_ret_addr); |
| 1273 |
if (args[0] >> 8) { |
| 1274 |
*ld_ptr = (uint8_t) (s->code_ptr - ld_ptr) - 8;
|
| 1275 |
tcg_out32(s, args[0]);
|
| 1276 |
} |
| 1277 |
} |
| 1278 |
#endif
|
| 1279 |
break;
|
| 1280 |
case INDEX_op_goto_tb:
|
| 1281 |
if (s->tb_jmp_offset) {
|
| 1282 |
/* Direct jump method */
|
| 1283 |
#if defined(USE_DIRECT_JUMP)
|
| 1284 |
s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
|
| 1285 |
tcg_out_b(s, COND_AL, 8);
|
| 1286 |
#else
|
| 1287 |
tcg_out_ld32_12(s, COND_AL, 15, 15, -4); |
| 1288 |
s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
|
| 1289 |
tcg_out32(s, 0);
|
| 1290 |
#endif
|
| 1291 |
} else {
|
| 1292 |
/* Indirect jump method */
|
| 1293 |
#if 1 |
| 1294 |
c = (int) (s->tb_next + args[0]) - ((int) s->code_ptr + 8); |
| 1295 |
if (c > 0xfff || c < -0xfff) { |
| 1296 |
tcg_out_movi32(s, COND_AL, TCG_REG_R0, |
| 1297 |
(tcg_target_long) (s->tb_next + args[0]));
|
| 1298 |
tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0); |
| 1299 |
} else
|
| 1300 |
tcg_out_ld32_12(s, COND_AL, 15, 15, c); |
| 1301 |
#else
|
| 1302 |
tcg_out_ld32_12(s, COND_AL, TCG_REG_R0, 15, 0); |
| 1303 |
tcg_out_ld32_12(s, COND_AL, 15, TCG_REG_R0, 0); |
| 1304 |
tcg_out32(s, (tcg_target_long) (s->tb_next + args[0]));
|
| 1305 |
#endif
|
| 1306 |
} |
| 1307 |
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
|
| 1308 |
break;
|
| 1309 |
case INDEX_op_call:
|
| 1310 |
if (const_args[0]) |
| 1311 |
tcg_out_call(s, COND_AL, args[0]);
|
| 1312 |
else
|
| 1313 |
tcg_out_callr(s, COND_AL, args[0]);
|
| 1314 |
break;
|
| 1315 |
case INDEX_op_jmp:
|
| 1316 |
if (const_args[0]) |
| 1317 |
tcg_out_goto(s, COND_AL, args[0]);
|
| 1318 |
else
|
| 1319 |
tcg_out_bx(s, COND_AL, args[0]);
|
| 1320 |
break;
|
| 1321 |
case INDEX_op_br:
|
| 1322 |
tcg_out_goto_label(s, COND_AL, args[0]);
|
| 1323 |
break;
|
| 1324 |
|
| 1325 |
case INDEX_op_ld8u_i32:
|
| 1326 |
tcg_out_ld8u(s, COND_AL, args[0], args[1], args[2]); |
| 1327 |
break;
|
| 1328 |
case INDEX_op_ld8s_i32:
|
| 1329 |
tcg_out_ld8s(s, COND_AL, args[0], args[1], args[2]); |
| 1330 |
break;
|
| 1331 |
case INDEX_op_ld16u_i32:
|
| 1332 |
tcg_out_ld16u(s, COND_AL, args[0], args[1], args[2]); |
| 1333 |
break;
|
| 1334 |
case INDEX_op_ld16s_i32:
|
| 1335 |
tcg_out_ld16s(s, COND_AL, args[0], args[1], args[2]); |
| 1336 |
break;
|
| 1337 |
case INDEX_op_ld_i32:
|
| 1338 |
tcg_out_ld32u(s, COND_AL, args[0], args[1], args[2]); |
| 1339 |
break;
|
| 1340 |
case INDEX_op_st8_i32:
|
| 1341 |
tcg_out_st8u(s, COND_AL, args[0], args[1], args[2]); |
| 1342 |
break;
|
| 1343 |
case INDEX_op_st16_i32:
|
| 1344 |
tcg_out_st16u(s, COND_AL, args[0], args[1], args[2]); |
| 1345 |
break;
|
| 1346 |
case INDEX_op_st_i32:
|
| 1347 |
tcg_out_st32(s, COND_AL, args[0], args[1], args[2]); |
| 1348 |
break;
|
| 1349 |
|
| 1350 |
case INDEX_op_mov_i32:
|
| 1351 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 1352 |
args[0], 0, args[1], SHIFT_IMM_LSL(0)); |
| 1353 |
break;
|
| 1354 |
case INDEX_op_movi_i32:
|
| 1355 |
tcg_out_movi32(s, COND_AL, args[0], args[1]); |
| 1356 |
break;
|
| 1357 |
case INDEX_op_add_i32:
|
| 1358 |
c = ARITH_ADD; |
| 1359 |
goto gen_arith;
|
| 1360 |
case INDEX_op_sub_i32:
|
| 1361 |
c = ARITH_SUB; |
| 1362 |
goto gen_arith;
|
| 1363 |
case INDEX_op_and_i32:
|
| 1364 |
c = ARITH_AND; |
| 1365 |
goto gen_arith;
|
| 1366 |
case INDEX_op_andc_i32:
|
| 1367 |
c = ARITH_BIC; |
| 1368 |
goto gen_arith;
|
| 1369 |
case INDEX_op_or_i32:
|
| 1370 |
c = ARITH_ORR; |
| 1371 |
goto gen_arith;
|
| 1372 |
case INDEX_op_xor_i32:
|
| 1373 |
c = ARITH_EOR; |
| 1374 |
/* Fall through. */
|
| 1375 |
gen_arith:
|
| 1376 |
if (const_args[2]) { |
| 1377 |
int rot;
|
| 1378 |
rot = encode_imm(args[2]);
|
| 1379 |
tcg_out_dat_imm(s, COND_AL, c, |
| 1380 |
args[0], args[1], rotl(args[2], rot) | (rot << 7)); |
| 1381 |
} else
|
| 1382 |
tcg_out_dat_reg(s, COND_AL, c, |
| 1383 |
args[0], args[1], args[2], SHIFT_IMM_LSL(0)); |
| 1384 |
break;
|
| 1385 |
case INDEX_op_add2_i32:
|
| 1386 |
tcg_out_dat_reg2(s, COND_AL, ARITH_ADD, ARITH_ADC, |
| 1387 |
args[0], args[1], args[2], args[3], |
| 1388 |
args[4], args[5], SHIFT_IMM_LSL(0)); |
| 1389 |
break;
|
| 1390 |
case INDEX_op_sub2_i32:
|
| 1391 |
tcg_out_dat_reg2(s, COND_AL, ARITH_SUB, ARITH_SBC, |
| 1392 |
args[0], args[1], args[2], args[3], |
| 1393 |
args[4], args[5], SHIFT_IMM_LSL(0)); |
| 1394 |
break;
|
| 1395 |
case INDEX_op_neg_i32:
|
| 1396 |
tcg_out_dat_imm(s, COND_AL, ARITH_RSB, args[0], args[1], 0); |
| 1397 |
break;
|
| 1398 |
case INDEX_op_not_i32:
|
| 1399 |
tcg_out_dat_reg(s, COND_AL, |
| 1400 |
ARITH_MVN, args[0], 0, args[1], SHIFT_IMM_LSL(0)); |
| 1401 |
break;
|
| 1402 |
case INDEX_op_mul_i32:
|
| 1403 |
tcg_out_mul32(s, COND_AL, args[0], args[1], args[2]); |
| 1404 |
break;
|
| 1405 |
case INDEX_op_mulu2_i32:
|
| 1406 |
tcg_out_umull32(s, COND_AL, args[0], args[1], args[2], args[3]); |
| 1407 |
break;
|
| 1408 |
/* XXX: Perhaps args[2] & 0x1f is wrong */
|
| 1409 |
case INDEX_op_shl_i32:
|
| 1410 |
c = const_args[2] ?
|
| 1411 |
SHIFT_IMM_LSL(args[2] & 0x1f) : SHIFT_REG_LSL(args[2]); |
| 1412 |
goto gen_shift32;
|
| 1413 |
case INDEX_op_shr_i32:
|
| 1414 |
c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_LSR(args[2] & 0x1f) : |
| 1415 |
SHIFT_IMM_LSL(0) : SHIFT_REG_LSR(args[2]); |
| 1416 |
goto gen_shift32;
|
| 1417 |
case INDEX_op_sar_i32:
|
| 1418 |
c = const_args[2] ? (args[2] & 0x1f) ? SHIFT_IMM_ASR(args[2] & 0x1f) : |
| 1419 |
SHIFT_IMM_LSL(0) : SHIFT_REG_ASR(args[2]); |
| 1420 |
/* Fall through. */
|
| 1421 |
gen_shift32:
|
| 1422 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, args[1], c); |
| 1423 |
break;
|
| 1424 |
|
| 1425 |
case INDEX_op_brcond_i32:
|
| 1426 |
if (const_args[1]) { |
| 1427 |
int rot;
|
| 1428 |
rot = encode_imm(args[1]);
|
| 1429 |
tcg_out_dat_imm(s, COND_AL, ARITH_CMP, |
| 1430 |
0, args[0], rotl(args[1], rot) | (rot << 7)); |
| 1431 |
} else {
|
| 1432 |
tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
|
| 1433 |
args[0], args[1], SHIFT_IMM_LSL(0)); |
| 1434 |
} |
| 1435 |
tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[2]], args[3]); |
| 1436 |
break;
|
| 1437 |
case INDEX_op_brcond2_i32:
|
| 1438 |
/* The resulting conditions are:
|
| 1439 |
* TCG_COND_EQ --> a0 == a2 && a1 == a3,
|
| 1440 |
* TCG_COND_NE --> (a0 != a2 && a1 == a3) || a1 != a3,
|
| 1441 |
* TCG_COND_LT(U) --> (a0 < a2 && a1 == a3) || a1 < a3,
|
| 1442 |
* TCG_COND_GE(U) --> (a0 >= a2 && a1 == a3) || (a1 >= a3 && a1 != a3),
|
| 1443 |
* TCG_COND_LE(U) --> (a0 <= a2 && a1 == a3) || (a1 <= a3 && a1 != a3),
|
| 1444 |
* TCG_COND_GT(U) --> (a0 > a2 && a1 == a3) || a1 > a3,
|
| 1445 |
*/
|
| 1446 |
tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
|
| 1447 |
args[1], args[3], SHIFT_IMM_LSL(0)); |
| 1448 |
tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
|
| 1449 |
args[0], args[2], SHIFT_IMM_LSL(0)); |
| 1450 |
tcg_out_goto_label(s, tcg_cond_to_arm_cond[args[4]], args[5]); |
| 1451 |
break;
|
| 1452 |
case INDEX_op_setcond_i32:
|
| 1453 |
if (const_args[2]) { |
| 1454 |
int rot;
|
| 1455 |
rot = encode_imm(args[2]);
|
| 1456 |
tcg_out_dat_imm(s, COND_AL, ARITH_CMP, |
| 1457 |
0, args[1], rotl(args[2], rot) | (rot << 7)); |
| 1458 |
} else {
|
| 1459 |
tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
|
| 1460 |
args[1], args[2], SHIFT_IMM_LSL(0)); |
| 1461 |
} |
| 1462 |
tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[3]],
|
| 1463 |
ARITH_MOV, args[0], 0, 1); |
| 1464 |
tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[3])],
|
| 1465 |
ARITH_MOV, args[0], 0, 0); |
| 1466 |
break;
|
| 1467 |
case INDEX_op_setcond2_i32:
|
| 1468 |
/* See brcond2_i32 comment */
|
| 1469 |
tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
|
| 1470 |
args[2], args[4], SHIFT_IMM_LSL(0)); |
| 1471 |
tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0,
|
| 1472 |
args[1], args[3], SHIFT_IMM_LSL(0)); |
| 1473 |
tcg_out_dat_imm(s, tcg_cond_to_arm_cond[args[5]],
|
| 1474 |
ARITH_MOV, args[0], 0, 1); |
| 1475 |
tcg_out_dat_imm(s, tcg_cond_to_arm_cond[tcg_invert_cond(args[5])],
|
| 1476 |
ARITH_MOV, args[0], 0, 0); |
| 1477 |
break;
|
| 1478 |
|
| 1479 |
case INDEX_op_qemu_ld8u:
|
| 1480 |
tcg_out_qemu_ld(s, COND_AL, args, 0);
|
| 1481 |
break;
|
| 1482 |
case INDEX_op_qemu_ld8s:
|
| 1483 |
tcg_out_qemu_ld(s, COND_AL, args, 0 | 4); |
| 1484 |
break;
|
| 1485 |
case INDEX_op_qemu_ld16u:
|
| 1486 |
tcg_out_qemu_ld(s, COND_AL, args, 1);
|
| 1487 |
break;
|
| 1488 |
case INDEX_op_qemu_ld16s:
|
| 1489 |
tcg_out_qemu_ld(s, COND_AL, args, 1 | 4); |
| 1490 |
break;
|
| 1491 |
case INDEX_op_qemu_ld32u:
|
| 1492 |
tcg_out_qemu_ld(s, COND_AL, args, 2);
|
| 1493 |
break;
|
| 1494 |
case INDEX_op_qemu_ld64:
|
| 1495 |
tcg_out_qemu_ld(s, COND_AL, args, 3);
|
| 1496 |
break;
|
| 1497 |
|
| 1498 |
case INDEX_op_qemu_st8:
|
| 1499 |
tcg_out_qemu_st(s, COND_AL, args, 0);
|
| 1500 |
break;
|
| 1501 |
case INDEX_op_qemu_st16:
|
| 1502 |
tcg_out_qemu_st(s, COND_AL, args, 1);
|
| 1503 |
break;
|
| 1504 |
case INDEX_op_qemu_st32:
|
| 1505 |
tcg_out_qemu_st(s, COND_AL, args, 2);
|
| 1506 |
break;
|
| 1507 |
case INDEX_op_qemu_st64:
|
| 1508 |
tcg_out_qemu_st(s, COND_AL, args, 3);
|
| 1509 |
break;
|
| 1510 |
|
| 1511 |
case INDEX_op_ext8s_i32:
|
| 1512 |
#ifdef __ARM_ARCH_7A__
|
| 1513 |
/* sxtb */
|
| 1514 |
tcg_out32(s, 0xe6af0070 | (args[0] << 12) | args[1]); |
| 1515 |
#else
|
| 1516 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 1517 |
args[0], 0, args[1], SHIFT_IMM_LSL(24)); |
| 1518 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 1519 |
args[0], 0, args[0], SHIFT_IMM_ASR(24)); |
| 1520 |
#endif
|
| 1521 |
break;
|
| 1522 |
case INDEX_op_ext16s_i32:
|
| 1523 |
#ifdef __ARM_ARCH_7A__
|
| 1524 |
/* sxth */
|
| 1525 |
tcg_out32(s, 0xe6bf0070 | (args[0] << 12) | args[1]); |
| 1526 |
#else
|
| 1527 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 1528 |
args[0], 0, args[1], SHIFT_IMM_LSL(16)); |
| 1529 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, |
| 1530 |
args[0], 0, args[0], SHIFT_IMM_ASR(16)); |
| 1531 |
#endif
|
| 1532 |
break;
|
| 1533 |
|
| 1534 |
default:
|
| 1535 |
tcg_abort(); |
| 1536 |
} |
| 1537 |
} |
| 1538 |
|
| 1539 |
static const TCGTargetOpDef arm_op_defs[] = { |
| 1540 |
{ INDEX_op_exit_tb, { } },
|
| 1541 |
{ INDEX_op_goto_tb, { } },
|
| 1542 |
{ INDEX_op_call, { "ri" } },
|
| 1543 |
{ INDEX_op_jmp, { "ri" } },
|
| 1544 |
{ INDEX_op_br, { } },
|
| 1545 |
|
| 1546 |
{ INDEX_op_mov_i32, { "r", "r" } },
|
| 1547 |
{ INDEX_op_movi_i32, { "r" } },
|
| 1548 |
|
| 1549 |
{ INDEX_op_ld8u_i32, { "r", "r" } },
|
| 1550 |
{ INDEX_op_ld8s_i32, { "r", "r" } },
|
| 1551 |
{ INDEX_op_ld16u_i32, { "r", "r" } },
|
| 1552 |
{ INDEX_op_ld16s_i32, { "r", "r" } },
|
| 1553 |
{ INDEX_op_ld_i32, { "r", "r" } },
|
| 1554 |
{ INDEX_op_st8_i32, { "r", "r" } },
|
| 1555 |
{ INDEX_op_st16_i32, { "r", "r" } },
|
| 1556 |
{ INDEX_op_st_i32, { "r", "r" } },
|
| 1557 |
|
| 1558 |
/* TODO: "r", "r", "ri" */
|
| 1559 |
{ INDEX_op_add_i32, { "r", "r", "rI" } },
|
| 1560 |
{ INDEX_op_sub_i32, { "r", "r", "rI" } },
|
| 1561 |
{ INDEX_op_mul_i32, { "r", "r", "r" } },
|
| 1562 |
{ INDEX_op_mulu2_i32, { "r", "r", "r", "r" } },
|
| 1563 |
{ INDEX_op_and_i32, { "r", "r", "rI" } },
|
| 1564 |
{ INDEX_op_andc_i32, { "r", "r", "rI" } },
|
| 1565 |
{ INDEX_op_or_i32, { "r", "r", "rI" } },
|
| 1566 |
{ INDEX_op_xor_i32, { "r", "r", "rI" } },
|
| 1567 |
{ INDEX_op_neg_i32, { "r", "r" } },
|
| 1568 |
{ INDEX_op_not_i32, { "r", "r" } },
|
| 1569 |
|
| 1570 |
{ INDEX_op_shl_i32, { "r", "r", "ri" } },
|
| 1571 |
{ INDEX_op_shr_i32, { "r", "r", "ri" } },
|
| 1572 |
{ INDEX_op_sar_i32, { "r", "r", "ri" } },
|
| 1573 |
|
| 1574 |
{ INDEX_op_brcond_i32, { "r", "rI" } },
|
| 1575 |
{ INDEX_op_setcond_i32, { "r", "r", "rI" } },
|
| 1576 |
|
| 1577 |
/* TODO: "r", "r", "r", "r", "ri", "ri" */
|
| 1578 |
{ INDEX_op_add2_i32, { "r", "r", "r", "r", "r", "r" } },
|
| 1579 |
{ INDEX_op_sub2_i32, { "r", "r", "r", "r", "r", "r" } },
|
| 1580 |
{ INDEX_op_brcond2_i32, { "r", "r", "r", "r" } },
|
| 1581 |
{ INDEX_op_setcond2_i32, { "r", "r", "r", "r", "r" } },
|
| 1582 |
|
| 1583 |
{ INDEX_op_qemu_ld8u, { "r", "x", "X" } },
|
| 1584 |
{ INDEX_op_qemu_ld8s, { "r", "x", "X" } },
|
| 1585 |
{ INDEX_op_qemu_ld16u, { "r", "x", "X" } },
|
| 1586 |
{ INDEX_op_qemu_ld16s, { "r", "x", "X" } },
|
| 1587 |
{ INDEX_op_qemu_ld32u, { "r", "x", "X" } },
|
| 1588 |
{ INDEX_op_qemu_ld64, { "d", "r", "x", "X" } },
|
| 1589 |
|
| 1590 |
{ INDEX_op_qemu_st8, { "x", "x", "X" } },
|
| 1591 |
{ INDEX_op_qemu_st16, { "x", "x", "X" } },
|
| 1592 |
{ INDEX_op_qemu_st32, { "x", "x", "X" } },
|
| 1593 |
{ INDEX_op_qemu_st64, { "x", "D", "x", "X" } },
|
| 1594 |
|
| 1595 |
{ INDEX_op_ext8s_i32, { "r", "r" } },
|
| 1596 |
{ INDEX_op_ext16s_i32, { "r", "r" } },
|
| 1597 |
|
| 1598 |
{ -1 },
|
| 1599 |
}; |
| 1600 |
|
| 1601 |
void tcg_target_init(TCGContext *s)
|
| 1602 |
{
|
| 1603 |
#if !defined(CONFIG_USER_ONLY)
|
| 1604 |
/* fail safe */
|
| 1605 |
if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry)) |
| 1606 |
tcg_abort(); |
| 1607 |
#endif
|
| 1608 |
|
| 1609 |
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0,
|
| 1610 |
((2 << TCG_REG_R14) - 1) & ~(1 << TCG_REG_R8)); |
| 1611 |
tcg_regset_set32(tcg_target_call_clobber_regs, 0,
|
| 1612 |
((2 << TCG_REG_R3) - 1) | |
| 1613 |
(1 << TCG_REG_R12) | (1 << TCG_REG_R14)); |
| 1614 |
|
| 1615 |
tcg_regset_clear(s->reserved_regs); |
| 1616 |
#ifdef SAVE_LR
|
| 1617 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R14); |
| 1618 |
#endif
|
| 1619 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); |
| 1620 |
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R8); |
| 1621 |
|
| 1622 |
tcg_add_target_add_op_defs(arm_op_defs); |
| 1623 |
} |
| 1624 |
|
| 1625 |
static inline void tcg_out_ld(TCGContext *s, TCGType type, int arg, |
| 1626 |
int arg1, tcg_target_long arg2)
|
| 1627 |
{
|
| 1628 |
tcg_out_ld32u(s, COND_AL, arg, arg1, arg2); |
| 1629 |
} |
| 1630 |
|
| 1631 |
static inline void tcg_out_st(TCGContext *s, TCGType type, int arg, |
| 1632 |
int arg1, tcg_target_long arg2)
|
| 1633 |
{
|
| 1634 |
tcg_out_st32(s, COND_AL, arg, arg1, arg2); |
| 1635 |
} |
| 1636 |
|
| 1637 |
static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val) |
| 1638 |
{
|
| 1639 |
if (val > 0) |
| 1640 |
if (val < 0x100) |
| 1641 |
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, reg, reg, val); |
| 1642 |
else
|
| 1643 |
tcg_abort(); |
| 1644 |
else if (val < 0) { |
| 1645 |
if (val > -0x100) |
| 1646 |
tcg_out_dat_imm(s, COND_AL, ARITH_SUB, reg, reg, -val); |
| 1647 |
else
|
| 1648 |
tcg_abort(); |
| 1649 |
} |
| 1650 |
} |
| 1651 |
|
| 1652 |
static inline void tcg_out_mov(TCGContext *s, int ret, int arg) |
| 1653 |
{
|
| 1654 |
tcg_out_dat_reg(s, COND_AL, ARITH_MOV, ret, 0, arg, SHIFT_IMM_LSL(0)); |
| 1655 |
} |
| 1656 |
|
| 1657 |
static inline void tcg_out_movi(TCGContext *s, TCGType type, |
| 1658 |
int ret, tcg_target_long arg)
|
| 1659 |
{
|
| 1660 |
tcg_out_movi32(s, COND_AL, ret, arg); |
| 1661 |
} |
| 1662 |
|
| 1663 |
void tcg_target_qemu_prologue(TCGContext *s)
|
| 1664 |
{
|
| 1665 |
/* Theoretically there is no need to save r12, but an
|
| 1666 |
even number of registers to be saved as per EABI */
|
| 1667 |
|
| 1668 |
/* stmdb sp!, { r4 - r12, lr } */
|
| 1669 |
tcg_out32(s, (COND_AL << 28) | 0x092d5ff0); |
| 1670 |
|
| 1671 |
tcg_out_bx(s, COND_AL, TCG_REG_R0); |
| 1672 |
tb_ret_addr = s->code_ptr; |
| 1673 |
|
| 1674 |
/* ldmia sp!, { r4 - r12, pc } */
|
| 1675 |
tcg_out32(s, (COND_AL << 28) | 0x08bd9ff0); |
| 1676 |
} |