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Added code generation for register and immediate PUSH/POP, RET, relative CALL and JMP instructions.

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This commit is contained in:
TomW 2015-03-30 20:42:33 +01:00
commit a97e89e857
8 changed files with 371 additions and 17 deletions
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29
src/codegen_ops_jump.h Normal file
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static uint32_t ropJMP_r8(uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc, codeblock_t *block)
{
uint32_t offset = fetchdat & 0xff;
if (offset & 0x80)
offset |= 0xffffff00;
STORE_IMM_ADDR_L((uintptr_t)&pc, op_pc+1+offset);
return -1;
}
static uint32_t ropJMP_r16(uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc, codeblock_t *block)
{
uint16_t offset = fetchdat & 0xffff;
STORE_IMM_ADDR_L((uintptr_t)&pc, (op_pc+2+offset) & 0xffff);
return -1;
}
static uint32_t ropJMP_r32(uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc, codeblock_t *block)
{
uint32_t offset = fastreadl(cs + op_pc);
STORE_IMM_ADDR_L((uintptr_t)&pc, op_pc+4+offset);
return -1;
}