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| author | Damien George <damien.p.george@gmail.com> | 2014-09-08 22:16:35 +0000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2014-09-08 22:16:35 +0000 |
| commit | 6eae861685e8860e7542097ad20f69168e639a93 (patch) | |
| tree | 13a9d01b42c8ffe8d43b31613c71319629c5a1d5 /py/asmx86.h | |
| parent | 7ff996c2377b191ff829e6e03815acf9bfe85a14 (diff) | |
py: Put define of x86 argument registers in asmx86.h.
Diffstat (limited to 'py/asmx86.h')
| -rw-r--r-- | py/asmx86.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/py/asmx86.h b/py/asmx86.h index 5af19cbf6..6099325c7 100644 --- a/py/asmx86.h +++ b/py/asmx86.h @@ -44,6 +44,14 @@ #define REG_ESI (6) #define REG_EDI (7) +// x86 passes values on the stack, but the emitter is register based, so we need +// to define registers that can temporarily hold the function arguments. They +// need to be defined here so that asm_x86_call_ind can push them onto the stack +// before the call. +#define ASM_X86_REG_ARG_1 REG_EAX +#define ASM_X86_REG_ARG_2 REG_ECX +#define ASM_X86_REG_ARG_3 REG_EDX + // condition codes, used for jcc and setcc (despite their j-name!) #define ASM_X86_CC_JB (0x2) // below, unsigned #define ASM_X86_CC_JZ (0x4) |