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| author | andrew <andrew@FreeBSD.org> | 2013-07-21 12:47:33 +0000 |
|---|---|---|
| committer | andrew <andrew@FreeBSD.org> | 2013-07-21 12:47:33 +0000 |
| commit | 80d48d248e044b205f9085e9be44aeb18c5c4cfd (patch) | |
| tree | 8e2454523870301dec4c58a813c404d55d8de835 /lib | |
| parent | f9052e5539810cb72cf7a43461e9c6b3653662b7 (diff) | |
| download | FreeBSD-src-80d48d248e044b205f9085e9be44aeb18c5c4cfd.zip FreeBSD-src-80d48d248e044b205f9085e9be44aeb18c5c4cfd.tar.gz | |
Teach siglongjmp about the VFP version of the setjmp buffer.
This fixes a bug where a call to sigsetjmp followed by siglongjmp may fail
when run on a machine with VFP enabled.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/arm/gen/sigsetjmp.S | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/libc/arm/gen/sigsetjmp.S b/lib/libc/arm/gen/sigsetjmp.S index 320c40d..79f1f9d 100644 --- a/lib/libc/arm/gen/sigsetjmp.S +++ b/lib/libc/arm/gen/sigsetjmp.S @@ -57,8 +57,10 @@ ENTRY(sigsetjmp) WEAK_ALIAS(__siglongjmp, siglongjmp) ENTRY(siglongjmp) - ldr r2, .L_setjmp_magic - ldr r3, [r0] - teq r2, r3 + ldr r2, .L_setjmp_magic /* load magic */ + ldr r3, [r0] /* get magic from jmp_buf */ + bic r3, r3, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP) + /* ignore VFP-ness of magic */ + teq r2, r3 /* magic correct? */ beq PIC_SYM(_C_LABEL(_longjmp), PLT) b PIC_SYM(_C_LABEL(longjmp), PLT) |
