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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/asmxtensa.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/asmxtensa.h')
| -rw-r--r-- | py/asmxtensa.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/py/asmxtensa.h b/py/asmxtensa.h index 07c3aa819..c348b854b 100644 --- a/py/asmxtensa.h +++ b/py/asmxtensa.h @@ -245,6 +245,9 @@ void asm_xtensa_mov_reg_local_addr(asm_xtensa_t *as, uint reg_dest, int local_nu void asm_xtensa_mov_reg_pcrel(asm_xtensa_t *as, uint reg_dest, uint label); void asm_xtensa_call_ind(asm_xtensa_t *as, uint idx); +// Holds a pointer to mp_fun_table +#define ASM_XTENSA_REG_FUN_TABLE ASM_XTENSA_REG_A15 + #if GENERIC_ASM_API // The following macros provide a (mostly) arch-independent API to @@ -268,6 +271,8 @@ void asm_xtensa_call_ind(asm_xtensa_t *as, uint idx); #define REG_LOCAL_3 ASM_XTENSA_REG_A14 #define REG_LOCAL_NUM (3) +#define REG_FUN_TABLE ASM_XTENSA_REG_FUN_TABLE + #define ASM_T asm_xtensa_t #define ASM_END_PASS asm_xtensa_end_pass #define ASM_ENTRY asm_xtensa_entry |