d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Teach siglongjmp about the VFP version of the setjmp buffer.

Browse Source 
This fixes a bug where a call to sigsetjmp followed by siglongjmp may fail
when run on a machine with VFP enabled.
This commit is contained in:
Andrew Turner 2013-07-21 12:47:33 +00:00
parent 1addf6e47a
commit f44fbb4c13
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=253518
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/libc/arm/gen/sigsetjmp.S
View File

@ -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)