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| author | neel <neel@FreeBSD.org> | 2010-02-04 05:49:59 +0000 |
|---|---|---|
| committer | neel <neel@FreeBSD.org> | 2010-02-04 05:49:59 +0000 |
| commit | 3e324aa4815e11695da086b862302f3aea9ea7c1 (patch) | |
| tree | b17b5a55b653f1bae7118bc3f4e0911ddf789c22 /lib | |
| parent | 61210c7a07793536b2b947b74140da7ff00affda (diff) | |
| download | FreeBSD-src-3e324aa4815e11695da086b862302f3aea9ea7c1.zip FreeBSD-src-3e324aa4815e11695da086b862302f3aea9ea7c1.tar.gz | |
Reinstate the ptrace patch to restore the 'gp' register after calling
a function. I made a mistake in assuming that the .cprestore directive
will cause the assembler to automatically restore 'gp' after the 'jalr'.
The .cprestore directive does its magic only after 'jal' and 'bal'
instructions - not the 'jalr'.
Pointed out by: c.jayachandran@gmail.com
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/mips/sys/ptrace.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/libc/mips/sys/ptrace.S b/lib/libc/mips/sys/ptrace.S index 9be54a5..09b82c5 100644 --- a/lib/libc/mips/sys/ptrace.S +++ b/lib/libc/mips/sys/ptrace.S @@ -56,6 +56,9 @@ LEAF(ptrace) #endif la t9, _C_LABEL(__error) # locate address of errno jalr t9 +#ifdef __ABICALLS__ + lw gp, 16(sp) +#endif sw zero, 0(v0) lw ra, 32(sp) addu sp, sp, 40 |
