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py/asmx64: Change indirect calls to load fun ptr from the native table.

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Instead of storing the function pointer directly in the assembly code.
This makes the generated code more independent of the runtime (so easier to
relocate the code), and reduces the generated code size.
This commit is contained in:
Damien George
2018-10-13 12:57:32 +11:00
parent 8941c63290
commit 8e4b4bac70
3 changed files with 8 additions and 15 deletions
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4
py/emitnative.c
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@@ -379,6 +379,8 @@ STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scop
asm_arm_mov_reg_i32(emit->as, ASM_ARM_REG_R7, (mp_uint_t)mp_fun_table);
#elif N_XTENSA
ASM_MOV_REG_IMM(emit->as, ASM_XTENSA_REG_A15, (uint32_t)mp_fun_table);
#elif N_X64
asm_x64_mov_i64_to_r64_optimised(emit->as, (intptr_t)mp_fun_table, ASM_X64_REG_RBP);
#endif
// Store function object (passed as first arg) to stack if needed
@@ -469,6 +471,8 @@ STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scop
asm_arm_mov_reg_i32(emit->as, ASM_ARM_REG_R7, (mp_uint_t)mp_fun_table);
#elif N_XTENSA
ASM_MOV_REG_IMM(emit->as, ASM_XTENSA_REG_A15, (uint32_t)mp_fun_table);
#elif N_X64
asm_x64_mov_i64_to_r64_optimised(emit->as, (intptr_t)mp_fun_table, ASM_X64_REG_RBP);
#endif
if (!(emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR)) {