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Add helper methods to the asm_tables_amd64.cpp

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gingerBill
2026-08-12 21:18:10 +01:00
parent 5768668af9
commit 08f3be70cf
2 changed files with 78 additions and 0 deletions
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39
core/rexcode/isa/x86/tablegen/cpp-compiler/cpp-gen.odin
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@@ -180,6 +180,45 @@ main :: proc() {
OperandSet_OP2 = 1<<2,
OperandSet_OP3 = 1<<3,
};
u16 clobber_bit_for_reg_name(String const &pin) {
static const struct { String name; u16 bit; } table[] = {
{str_lit(\"rax\"), ClobberReg_RAX}, {str_lit(\"eax\"), ClobberReg_RAX}, {str_lit(\"ax\"), ClobberReg_RAX}, {str_lit(\"al\"), ClobberReg_RAX}, {str_lit(\"ah\"), ClobberReg_RAX},
{str_lit(\"rbx\"), ClobberReg_RBX}, {str_lit(\"ebx\"), ClobberReg_RBX}, {str_lit(\"bx\"), ClobberReg_RBX}, {str_lit(\"bl\"), ClobberReg_RBX}, {str_lit(\"bh\"), ClobberReg_RBX},
{str_lit(\"rcx\"), ClobberReg_RCX}, {str_lit(\"ecx\"), ClobberReg_RCX}, {str_lit(\"cx\"), ClobberReg_RCX}, {str_lit(\"cl\"), ClobberReg_RCX}, {str_lit(\"ch\"), ClobberReg_RCX},
{str_lit(\"rdx\"), ClobberReg_RDX}, {str_lit(\"edx\"), ClobberReg_RDX}, {str_lit(\"dx\"), ClobberReg_RDX}, {str_lit(\"dl\"), ClobberReg_RDX}, {str_lit(\"dh\"), ClobberReg_RDX},
{str_lit(\"rsi\"), ClobberReg_RSI}, {str_lit(\"esi\"), ClobberReg_RSI}, {str_lit(\"si\"), ClobberReg_RSI}, {str_lit(\"sil\"), ClobberReg_RSI},
{str_lit(\"rdi\"), ClobberReg_RDI}, {str_lit(\"edi\"), ClobberReg_RDI}, {str_lit(\"di\"), ClobberReg_RDI}, {str_lit(\"dil\"), ClobberReg_RDI},
{str_lit(\"rsp\"), ClobberReg_RSP}, {str_lit(\"esp\"), ClobberReg_RSP},
{str_lit(\"rbp\"), ClobberReg_RBP}, {str_lit(\"ebp\"), ClobberReg_RBP},
{str_lit(\"r11\"), ClobberReg_R11}, {str_lit(\"r11d\"), ClobberReg_R11},
{str_lit(\"r11w\"), ClobberReg_R11}, {str_lit(\"r11b\"), ClobberReg_R11},
{str_lit(\"xmm0\"), ClobberReg_XMM0},
};
for (auto const &t : table) {
if (pin == t.name) {
return t.bit;
}
}
return 0;
}
char const *clobber_reg_bit_name(u16 bit) {
switch (bit) {
case ClobberReg_RAX: return \"rax\";
case ClobberReg_RBX: return \"rbx\";
case ClobberReg_RCX: return \"rcx\";
case ClobberReg_RDX: return \"rdx\";
case ClobberReg_RSI: return \"rsi\";
case ClobberReg_RDI: return \"rdi\";
case ClobberReg_RSP: return \"rsp\";
case ClobberReg_RBP: return \"rbp\";
case ClobberReg_R11: return \"r11\";
case ClobberReg_XMM0: return \"xmm0\";
}
return \"<reg>\";
}
struct Clobber {
OperandSet written;
OperandSet read;