diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ppc/xmon/setjmp.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/ppc/xmon/setjmp.c')
-rw-r--r-- | arch/ppc/xmon/setjmp.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/ppc/xmon/setjmp.c b/arch/ppc/xmon/setjmp.c new file mode 100644 index 00000000000..28352bac2ae --- /dev/null +++ b/arch/ppc/xmon/setjmp.c @@ -0,0 +1,29 @@ +/* + * Copyright (C) 1996 Paul Mackerras. + * + * NB this file must be compiled with -O2. + */ + +int +xmon_setjmp(long *buf) +{ + asm ("mflr 0; stw 0,0(%0);" + "stw 1,4(%0); stw 2,8(%0);" + "mfcr 0; stw 0,12(%0);" + "stmw 13,16(%0)" + : : "r" (buf)); + /* XXX should save fp regs as well */ + return 0; +} + +void +xmon_longjmp(long *buf, int val) +{ + if (val == 0) + val = 1; + asm ("lmw 13,16(%0);" + "lwz 0,12(%0); mtcrf 0x38,0;" + "lwz 0,0(%0); lwz 1,4(%0); lwz 2,8(%0);" + "mtlr 0; mr 3,%1" + : : "r" (buf), "r" (val)); +} |