diff options
Diffstat (limited to 'usr/klibc/arch/ppc/setjmp.S')
| -rw-r--r-- | usr/klibc/arch/ppc/setjmp.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/usr/klibc/arch/ppc/setjmp.S b/usr/klibc/arch/ppc/setjmp.S new file mode 100644 index 0000000..e02b7da --- /dev/null +++ b/usr/klibc/arch/ppc/setjmp.S @@ -0,0 +1,34 @@ +# +# arch/ppc/setjmp.S +# +# Basic setjmp/longjmp implementation +# This file was derived from the equivalent file in NetBSD +# + + .text + .align 4 + .type setjmp,@function + .globl setjmp +setjmp: + mflr %r11 /* save return address */ + mfcr %r12 /* save condition register */ + mr %r10,%r1 /* save stack pointer */ + mr %r9,%r2 /* save GPR2 (not needed) */ + stmw %r9,0(%r3) /* save r9..r31 */ + li %r3,0 /* indicate success */ + blr /* return */ + + .size setjmp,.-setjmp + + .type longjmp,@function + .globl longjmp +longjmp: + lmw %r9,0(%r3) /* save r9..r31 */ + mtlr %r11 /* restore LR */ + mtcr %r12 /* restore CR */ + mr %r2,%r9 /* restore GPR2 (not needed) */ + mr %r1,%r10 /* restore stack */ + mr %r3,%r4 /* get return value */ + blr /* return */ + + .size longjmp,.-longjmp |