mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2025-03-13 13:37:38 +08:00
Code Issues Packages Projects Releases Wiki Activity

powerpc: Fix handling of scv return error codes [BZ #27892]

Browse Source 
When using scv for templated ASM syscalls, current code interprets any
negative return value as error, but the only valid error codes are in
the range -4095..-1 according to the ABI.

This commit also fixes 'signal.gen.test' strace test, where the issue
was first identified.

Reviewed-by: Matheus Castanho <msc@linux.ibm.com>
This commit is contained in:
Nicholas Piggin 2021-05-20 11:00:36 -03:00 committed by Matheus Castanho
parent 79aec84102
commit 7de36744ee
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sysdeps/powerpc/powerpc64/sysdep.h
View File

@ -398,8 +398,9 @@ LT_LABELSUFFIX(name,_name_end): ; \
#endif #endif
#define RET_SCV \ #define RET_SCV \
cmpdi r3,0; \ li r9,-4095; \
bgelr+; \ cmpld r3,r9; \
bltlr+; \
neg r3,r3; neg r3,r3;
#define RET_SC \ #define RET_SC \