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| author | Damien George <damien.p.george@gmail.com> | 2018-10-13 14:53:35 +1100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2018-10-13 15:16:33 +1100 |
| commit | 006671056da6627073f041b4d451cab9db031ff0 (patch) | |
| tree | ed1385d037fab8ed3b32869f0a9bb9ebd88b79f6 /py/asmx86.h | |
| parent | 355eb8eafb1a0b0e096cd452d1107ab45bbf72c4 (diff) | |
py/emitnative: Load native fun table ptr from const table for all archs.
All architectures now have a dedicated register to hold the pointer to the
native function table mp_fun_table, and so they all need to load this
register at the start of the native function. This commit makes the
loading of this register uniform across architectures by passing the
pointer in the constant table for the native function, and then loading the
register from the constant table. Doing it this way means that the pointer
is not stored in the assembly code, helping to make the code more portable.
Diffstat (limited to 'py/asmx86.h')
| -rw-r--r-- | py/asmx86.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/py/asmx86.h b/py/asmx86.h index a5535b548..1e3d3170a 100644 --- a/py/asmx86.h +++ b/py/asmx86.h @@ -114,6 +114,9 @@ void asm_x86_mov_local_addr_to_r32(asm_x86_t* as, int local_num, int dest_r32); void asm_x86_mov_reg_pcrel(asm_x86_t *as, int dest_r64, mp_uint_t label); void asm_x86_call_ind(asm_x86_t* as, size_t fun_id, mp_uint_t n_args, int temp_r32); +// Holds a pointer to mp_fun_table +#define ASM_X86_REG_FUN_TABLE ASM_X86_REG_EBP + #if GENERIC_ASM_API // The following macros provide a (mostly) arch-independent API to @@ -139,6 +142,9 @@ void asm_x86_call_ind(asm_x86_t* as, size_t fun_id, mp_uint_t n_args, int temp_r #define REG_LOCAL_3 ASM_X86_REG_EDI #define REG_LOCAL_NUM (3) +// Holds a pointer to mp_fun_table +#define REG_FUN_TABLE ASM_X86_REG_FUN_TABLE + #define ASM_T asm_x86_t #define ASM_END_PASS asm_x86_end_pass #define ASM_ENTRY asm_x86_entry |