diff options
Diffstat (limited to 'klibc/klibc/arch/cris/syscall.S')
| -rw-r--r-- | klibc/klibc/arch/cris/syscall.S | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/klibc/klibc/arch/cris/syscall.S b/klibc/klibc/arch/cris/syscall.S new file mode 100644 index 0000000000..d71495aba2 --- /dev/null +++ b/klibc/klibc/arch/cris/syscall.S @@ -0,0 +1,30 @@ +/* + * arch/cris/syscall.S + * + * On cris, r9 contains the syscall number (set by generated stub); + * r10..r13 contain arguments 0-3 per the standard calling convention, + * and arguments 4-5 are passed in $mof and $srp; however, we have + * to save $srp around the system call. + */ + + .section ".text","ax" + .balign 4 + .globl __syscall_common + .type __syscall_common,@function +__syscall_common: + push $srp + move [$sp+4],$mof + move [$sp+8],$srp + break 13 + + cmps.w -4096,$r10 + blo 1f + neg.d $r10,$r11 + move.d $r11,[errno] + moveq -1,$r10 +1: + pop $srp + ret + nop + + .size __syscall_common,.-__syscall_common |