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py/emitnative: Load native fun table ptr from const table for all archs.

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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.
This commit is contained in:
Damien George
2018-10-13 14:53:35 +11:00
parent 355eb8eafb
commit 006671056d
10 changed files with 54 additions and 36 deletions
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py/asmthumb.c
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@@ -383,7 +383,7 @@ void asm_thumb_bcc_label(asm_thumb_t *as, int cond, uint label) {
void asm_thumb_bl_ind(asm_thumb_t *as, void *fun_ptr, uint fun_id, uint reg_temp) {
// Load ptr to function from table, indexed by fun_id, then call it
asm_thumb_ldr_reg_reg_i12_optimised(as, reg_temp, ASM_THUMB_REG_R7, fun_id);
asm_thumb_ldr_reg_reg_i12_optimised(as, reg_temp, ASM_THUMB_REG_FUN_TABLE, fun_id);
asm_thumb_op16(as, OP_BLX(reg_temp));
}