syscall.s

来自「klibc精简化的c程序库」· S 代码 · 共 17 行

#include <asm/asm.h>
#include <asm/regdef.h>
#include <asm/unistd.h>

	.set noreorder

LEAF(__syscall_common)
	syscall
        beqz    a3, 1f
	# sw is actually two instructions; the first one goes
	# in the branch delay slot
	# XXX: Break this up manually; as it is now it generates warnings.
        sw      v0, errno
        li      v0, -1
1:      jr      ra
	END(__syscall_common)