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py: In native ARM emitter, load r7 with table earlier in func prelude. 

r7 may be needed to set up code state, so it must be loaded before the
set-up function is called.
This commit is contained in:
Damien George 2015-08-12 23:31:19 +01:00
parent 94ef8879cd
commit c39093d801
1 changed files with 14 additions and 9 deletions
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23
py/emitnative.c
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@ -693,6 +693,13 @@ STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scop
}
ASM_ENTRY(emit->as, num_locals);
// TODO don't load r7 if we don't need it
#if N_THUMB
asm_thumb_mov_reg_i32(emit->as, ASM_THUMB_REG_R7, (mp_uint_t)mp_fun_table);
#elif N_ARM
asm_arm_mov_reg_i32(emit->as, ASM_ARM_REG_R7, (mp_uint_t)mp_fun_table);
#endif
#if N_X86
for (int i = 0; i < scope->num_pos_args; i++) {
if (i == 0) {
@ -730,6 +737,13 @@ STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scop
// allocate space on C-stack for code_state structure, which includes state
ASM_ENTRY(emit->as, STATE_START + emit->n_state);
// TODO don't load r7 if we don't need it
#if N_THUMB
asm_thumb_mov_reg_i32(emit->as, ASM_THUMB_REG_R7, (mp_uint_t)mp_fun_table);
#elif N_ARM
asm_arm_mov_reg_i32(emit->as, ASM_ARM_REG_R7, (mp_uint_t)mp_fun_table);
#endif
// prepare incoming arguments for call to mp_setup_code_state
#if N_X86
asm_x86_mov_arg_to_r32(emit->as, 0, REG_ARG_2);
@ -796,15 +810,6 @@ STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scop
}
}
#if N_THUMB
// TODO don't load r7 if we don't need it
asm_thumb_mov_reg_i32(emit->as, ASM_THUMB_REG_R7, (mp_uint_t)mp_fun_table);
#endif
#if N_ARM
// TODO don't load r7 if we don't need it
asm_arm_mov_reg_i32(emit->as, ASM_ARM_REG_R7, (mp_uint_t)mp_fun_table);
#endif
}
STATIC void emit_native_end_pass(emit_t *emit) {