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nes/supervision: Add weak attribute to early and late init #393

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Merged
mysterymath merged 1 commit into from
Apr 21, 2025
Merged

nes/supervision: Add weak attribute to early and late init #393

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4 changes: 2 additions & 2 deletions mos-platform/nes/crt0.c
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ asm(".section .init.50,\"ax\",@progbits\n"
" txs\n"
" jsr __early_init\n");

void __early_init(void) {
__attribute__((weak)) void __early_init(void) {
// Disable NMI generation.
PPU.control = 0;
// Disable rendering.
Expand All @@ -36,7 +36,7 @@ void __early_init(void) {
asm(".section .init.250,\"ax\",@progbits\n"
" jsr __late_init\n");

void __late_init(void) {
__attribute__((weak)) void __late_init(void) {
// Wait for cycle 57165 at the earliest. This is late enough for the PPU to be
// fully functional and for the main program to begin.
ppu_wait_vblank();
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2 changes: 1 addition & 1 deletion mos-platform/supervision/crt0.c
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Expand Up @@ -7,7 +7,7 @@ asm(".section .init.50,\"ax\",@progbits\n"
" txs\n"
" jsr __early_init\n");

void __early_init(void) {
__attribute__((weak)) void __early_init(void) {
// Disable NMI, LCD, configure default bank.
sv_sys_control_set(SV_SYS_BANK(0) |
SV_SYS_NMI_DISABLE |
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