diff options
Diffstat (limited to 'libpsn00b/libc')
| -rw-r--r-- | libpsn00b/libc/_start.s | 18 | ||||
| -rw-r--r-- | libpsn00b/libc/start.c | 4 |
2 files changed, 20 insertions, 2 deletions
diff --git a/libpsn00b/libc/_start.s b/libpsn00b/libc/_start.s new file mode 100644 index 0000000..56075c8 --- /dev/null +++ b/libpsn00b/libc/_start.s @@ -0,0 +1,18 @@ +# PSn00bSDK _start() trampoline +# (C) 2022 spicyjpeg - MPL licensed +# +# This file provides a weak function that can be easily overridden to e.g. set +# $sp or perform additional initialization before the "real" _start() +# (_start_inner()) is called. + +.set noreorder +.section .text + +.global _start +.type _start, @function +.weak _start +_start: + la $gp, _gp + + j _start_inner + nop diff --git a/libpsn00b/libc/start.c b/libpsn00b/libc/start.c index fd6fe33..bfe9c9b 100644 --- a/libpsn00b/libc/start.c +++ b/libpsn00b/libc/start.c @@ -80,8 +80,8 @@ extern int main(int argc, const char* argv[]); // Even though _start() usually takes no arguments, this implementation allows // parent executables to pass args directly to child executables without having // to overwrite the arg strings in kernel RAM. -void _start(int32_t override_argc, const char **override_argv) { - __asm__ volatile("la $gp, _gp;"); +void _start_inner(int32_t override_argc, const char **override_argv) { + //__asm__ volatile("la $gp, _gp;"); // Clear BSS 4 bytes at a time. BSS is always aligned to 4 bytes by the // linker script. |