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Fix ARM64 SP alignment issue in JIT.

This commit is contained in:
Zoltán Herczeg 2015-04-23 13:53:29 +00:00
parent d1a13b8e2e
commit e75aa00591
1 changed files with 23 additions and 14 deletions
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37
src/sljit/sljitNativeARM_64.c
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@ -1081,12 +1081,13 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compil
FAIL_IF(push_inst(compiler, ADDI | RD(SLJIT_SP) | RN(TMP_SP) | (0 << 10)));
offs = (local_size - saved_regs_size) << (15 - 3);
} else {
compiler->local_size += 2 * sizeof(sljit_sw);
local_size -= saved_regs_size;
saved_regs_size += 2 * sizeof(sljit_sw);
FAIL_IF(push_inst(compiler, STP_PRE | 29 | RT2(TMP_LR)
| RN(TMP_SP) | ((-(saved_regs_size >> 3) & 0x7f) << 15)));
offs = 2 << 15;
offs = 0 << 15;
if (saved_regs_size & 0x8) {
offs = 1 << 15;
saved_regs_size += sizeof(sljit_sw);
}
local_size -= saved_regs_size + SLJIT_LOCALS_OFFSET;
FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | (saved_regs_size << 10)));
}
tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
@ -1122,6 +1123,8 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compil
}
if (local_size)
FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | (local_size << 10)));
FAIL_IF(push_inst(compiler, STP_PRE | 29 | RT2(TMP_LR)
| RN(TMP_SP) | ((-(16 >> 3) & 0x7f) << 15)));
FAIL_IF(push_inst(compiler, ADDI | RD(SLJIT_SP) | RN(TMP_SP) | (0 << 10)));
}
@ -1145,8 +1148,6 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_set_context(struct sljit_compiler *compi
local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 0) + SLJIT_LOCALS_OFFSET;
local_size = (local_size + 15) & ~0xf;
if (local_size > (63 * sizeof(sljit_sw)))
local_size += 2 * sizeof(sljit_sw);
compiler->local_size = local_size;
return SLJIT_SUCCESS;
}
@ -1167,16 +1168,20 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compi
if (local_size <= (63 * sizeof(sljit_sw)))
offs = (local_size - saved_regs_size) << (15 - 3);
else {
saved_regs_size += 2 * sizeof(sljit_sw);
local_size -= saved_regs_size;
FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR)
| RN(TMP_SP) | (((16 >> 3) & 0x7f) << 15)));
offs = 0 << 15;
if (saved_regs_size & 0x8) {
offs = 1 << 15;
saved_regs_size += sizeof(sljit_sw);
}
local_size -= saved_regs_size + SLJIT_LOCALS_OFFSET;
if (local_size > 0xfff) {
FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | ((local_size >> 12) << 10) | (1 << 22)));
local_size &= 0xfff;
}
if (local_size)
FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | (local_size << 10)));
local_size = saved_regs_size;
offs = 2 << 15;
}
tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
@ -1204,8 +1209,12 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compi
if (prev != -1)
FAIL_IF(push_inst(compiler, LDRI | RT(prev) | RN(TMP_SP) | (offs >> 5)));
FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR)
| RN(TMP_SP) | (((local_size >> 3) & 0x7f) << 15)));
if (compiler->local_size <= (63 * sizeof(sljit_sw))) {
FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR)
| RN(TMP_SP) | (((local_size >> 3) & 0x7f) << 15)));
} else {
FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | (saved_regs_size << 10)));
}
FAIL_IF(push_inst(compiler, RET | RN(TMP_LR)));
return SLJIT_SUCCESS;