diff options
| author | Thomas Weißschuh <linux@weissschuh.net> | 2025-06-23 23:25:37 +0200 |
|---|---|---|
| committer | Thomas Weißschuh <linux@weissschuh.net> | 2025-06-28 22:23:20 +0200 |
| commit | 36aab1693ade824640318746c2cbf085b687bad4 (patch) | |
| tree | 95388a2aae836f09ff84323bc0155fe4780c060d /tools/include | |
| parent | f1e303348d137c710cf3fbf2eadf9d273a204987 (diff) | |
tools/nolibc: MIPS: drop manual stack pointer alignment
The stack pointer is already aligned by the kernel to a multiple of 16.
All modifications of the register have been removed from the entrypoint,
so the manual realignment is unnecessary.
Drop the manual alignment.
Suggested-by: Maciej W. Rozycki <macro@orcam.me.uk>
Link: https://lore.kernel.org/lkml/alpine.DEB.2.21.2502161523290.65342@angie.orcam.me.uk/
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Tested-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Link: https://lore.kernel.org/r/20250623-nolibc-mips-n32-v3-2-6ae2d89f4259@weissschuh.net
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/nolibc/arch-mips.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/tools/include/nolibc/arch-mips.h b/tools/include/nolibc/arch-mips.h index 6d023d9f1203..0776de7574b4 100644 --- a/tools/include/nolibc/arch-mips.h +++ b/tools/include/nolibc/arch-mips.h @@ -186,8 +186,6 @@ void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector __ ".set push\n" ".set noreorder\n" "move $a0, $sp\n" /* save stack pointer to $a0, as arg1 of _start_c */ - "li $t0, -8\n" - "and $sp, $sp, $t0\n" /* $sp must be 8-byte aligned */ "addiu $sp, $sp, -16\n" /* the callee expects to save a0..a3 there */ "lui $t9, %hi(_start_c)\n" /* ABI requires current function address in $t9 */ "ori $t9, %lo(_start_c)\n" |