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Fix codegen pointer register reads.

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This commit is contained in:
SarahW 2018-11-28 18:41:53 +00:00
commit 356f406b22
9 changed files with 118 additions and 1 deletions
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57
src/codegen_backend_x86-64_ops.c
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@ -777,6 +777,25 @@ void host_x86_MOV32_REG_ABS(codeblock_t *block, int dst_reg, void *p)
codegen_addlong(block, (uint32_t)(uintptr_t)p);
}
}
void host_x86_MOV64_REG_ABS(codeblock_t *block, int dst_reg, void *p)
{
int offset = (uintptr_t)p - (((uintptr_t)&cpu_state) + 128);
if (dst_reg & 8)
fatal("host_x86_MOV64_REG_ABS reg & 8\n");
if (offset >= -128 && offset < 127)
{
codegen_addbyte4(block, 0x48, 0x8b, 0x45 | ((dst_reg & 7) << 3), offset); /*MOV dst_reg, offset[RBP]*/
}
else if (offset < (1ull << 32))
{
codegen_addbyte3(block, 0x48, 0x8b, 0x85 | ((dst_reg & 7) << 3)); /*MOV dst_reg, offset[RBP]*/
codegen_addlong(block, offset);
}
else
fatal("host_x86_MOV64_REG_ABS - out of range\n");
}
void host_x86_MOV8_REG_ABS_REG_REG_SHIFT(codeblock_t *block, int dst_reg, uint32_t addr, int base_reg, int index_reg, int shift)
{
@ -845,11 +864,29 @@ void host_x86_MOV32_REG_BASE_OFFSET(codeblock_t *block, int dst_reg, int base_re
else
fatal("MOV32_REG_BASE_OFFSET - offset %i\n", offset);
}
void host_x86_MOV64_REG_BASE_OFFSET(codeblock_t *block, int dst_reg, int base_reg, int offset)
{
if ((dst_reg & 8) || (base_reg & 8))
fatal("host_x86_MOV64_REG_BASE_OFFSET reg & 8\n");
if (offset >= -128 && offset < 127)
{
if (base_reg == REG_RSP)
{
codegen_addbyte(block, 0x48);
codegen_addbyte4(block, 0x8b, 0x40 | base_reg | (dst_reg << 3), 0x24, offset);
}
else
codegen_addbyte4(block, 0x48, 0x8b, 0x40 | base_reg | (dst_reg << 3), offset);
}
else
fatal("MOV32_REG_BASE_OFFSET - offset %i\n", offset);
}
void host_x86_MOV32_BASE_OFFSET_REG(codeblock_t *block, int base_reg, int offset, int src_reg)
{
if ((src_reg & 8) || (base_reg & 8))
fatal("host_x86_MOV64_BASE_OFFSET_REG reg & 8\n");
fatal("host_x86_MOV32_BASE_OFFSET_REG reg & 8\n");
if (offset >= -128 && offset < 127)
{
@ -863,6 +900,24 @@ void host_x86_MOV32_BASE_OFFSET_REG(codeblock_t *block, int base_reg, int offset
else
fatal("MOV32_BASE_OFFSET_REG - offset %i\n", offset);
}
void host_x86_MOV64_BASE_OFFSET_REG(codeblock_t *block, int base_reg, int offset, int src_reg)
{
if ((src_reg & 8) || (base_reg & 8))
fatal("host_x86_MOV64_BASE_OFFSET_REG reg & 8\n");
if (offset >= -128 && offset < 127)
{
if (base_reg == REG_RSP)
{
codegen_addbyte(block, 0x48);
codegen_addbyte4(block, 0x89, 0x40 | base_reg | (src_reg << 3), 0x24, offset);
}
else
codegen_addbyte4(block, 0x48, 0x89, 0x40 | base_reg | (src_reg << 3), offset);
}
else
fatal("MOV64_BASE_OFFSET_REG - offset %i\n", offset);
}
void host_x86_MOV8_REG_IMM(codeblock_t *block, int reg, uint16_t imm_data)
{