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... Signed-off-by: Thomas Weißschuh linux@weissschuh.net Tested-by: Sebastian Andrzej Siewior sebastian@breakpoint.cc --- tools/include/nolibc/arch-mips.h | 2 -- 1 file changed, 2 deletions(-)
diff --git a/tools/include/nolibc/arch-mips.h b/tools/include/nolibc/arch-mips.h index 6d023d9f120301b2d6837c923c142ab2cf87ae5a..0776de7574b451aeb34531bc4696c7bd9b694268 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"