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Support memory operands to pop

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This commit is contained in:
Max Bernstein 2021-02-26 19:11:27 -08:00 committed by Alan Wu
parent 831ac473fa
commit f63cdae3a3
2 changed files with 17 additions and 7 deletions
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19
ujit_asm.c
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@ -1431,16 +1431,21 @@ void or(codeblock_t* cb, x86opnd_t opnd0, x86opnd_t opnd1)
}
/// pop - Pop a register off the stack
void pop(codeblock_t* cb, x86opnd_t reg)
void pop(codeblock_t* cb, x86opnd_t opnd)
{
assert (reg.num_bits == 64);
assert (opnd.num_bits == 64);
//cb.writeASM("pop", reg);
//cb.writeASM("pop", opnd);
if (rex_needed(reg))
cb_write_rex(cb, false, 0, 0, reg.as.reg.reg_no);
cb_write_opcode(cb, 0x58, reg);
if (opnd.type == OPND_REG) {
if (rex_needed(opnd))
cb_write_rex(cb, false, 0, 0, opnd.as.reg.reg_no);
cb_write_opcode(cb, 0x58, opnd);
} else if (opnd.type == OPND_MEM) {
cb_write_rm(cb, false, false, NO_OPND, opnd, 0, 1, 0x8F);
} else {
assert(false && "unexpected operand type");
}
}
/// popfq - Pop the flags register (64-bit)

5
ujit_asm_tests.c
View file

@ -279,6 +279,11 @@ void run_tests()
cb_set_pos(cb, 0); pop(cb, RSP); check_bytes(cb, "5C");
cb_set_pos(cb, 0); pop(cb, RBP); check_bytes(cb, "5D");
cb_set_pos(cb, 0); pop(cb, R12); check_bytes(cb, "415C");
cb_set_pos(cb, 0); pop(cb, mem_opnd(64, RAX, 0)); check_bytes(cb, "8F00");
cb_set_pos(cb, 0); pop(cb, mem_opnd(64, R8, 0)); check_bytes(cb, "418F00");
cb_set_pos(cb, 0); pop(cb, mem_opnd(64, R8, 3)); check_bytes(cb, "418F4003");
cb_set_pos(cb, 0); pop(cb, mem_opnd_sib(64, RAX, RCX, 8, 3)); check_bytes(cb, "8F44C803");
cb_set_pos(cb, 0); pop(cb, mem_opnd_sib(64, R8, RCX, 8, 3)); check_bytes(cb, "418F44C803");
// push
cb_set_pos(cb, 0); push(cb, RAX); check_bytes(cb, "50");