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| author | spicyjpeg <88942473+spicyjpeg@users.noreply.github.com> | 2022-06-27 22:19:18 +0200 |
|---|---|---|
| committer | spicyjpeg <88942473+spicyjpeg@users.noreply.github.com> | 2022-06-27 22:19:18 +0200 |
| commit | 578181ace1374e72cb93d69d2c201ce7a0a2300c (patch) | |
| tree | 8e91212c966bf95bd7c34901e56dad7f81b9af57 /libpsn00b/libc | |
| parent | ef776e728cfa67fbca38bb375152b336fa0b5200 (diff) | |
| download | psn00bsdk-578181ace1374e72cb93d69d2c201ce7a0a2300c.tar.gz | |
Add 8 MB RAM support and customizable _start stub
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. |