FreeChainXenon/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
gcc/libgcc
History
Kewen Lin 15b83b69ca libgcc, rs6000: Fix bump size for powerpc64 elfv1 ABI [PR108727] 
As PR108727 shows, when cleanup code called by the stack
unwinder calls function _Unwind_Resume, it goes via plt
stub like:

   function 00000000.plt_call._Unwind_Resume:

=> 0x0000000010003580 <+0>:     std     r2,40(r1)
   0x0000000010003584 <+4>:     ld      r12,-31760(r2)
   0x0000000010003588 <+8>:     mtctr   r12
   0x000000001000358c <+12>:    ld      r2,-31752(r2)
   0x0000000010003590 <+16>:    cmpldi  r2,0
   0x0000000010003594 <+20>:    bnectr+
   0x0000000010003598 <+24>:    b       0x100031a4
                                        <_Unwind_Resume@plt>

It wants to save TOC base (r2) to r1 + 40, but we only
bump the stack segment by 32 bytes as follows:

   stdu %r29,-32(%r3)

It means the access is out of the stack segment allocated
by __generic_morestack, once the touch area isn't writable
like this failure shows, it would cause segment fault.

So fix the bump size with one reasonable value PARAMS.

	PR libgcc/108727

libgcc/ChangeLog:

	* config/rs6000/morestack.S (__morestack): Use PARAMS for new stack
	bump size.
2023-03-08 00:57:21 -06:00
..
config libgcc, rs6000: Fix bump size for powerpc64 elfv1 ABI [PR108727] 2023-03-08 00:57:21 -06:00
soft-fp PR target/107299: Fix build issue when long double is IEEE 128-bit 2023-03-06 17:38:33 -05:00
ChangeLog Daily bump. 2023-03-07 00:16:44 +00:00
config.host RISC-V: Handle vlenb correctly in unwinding 2023-02-13 10:40:46 +08:00
config.in
configure gcc: Add 'mcf' thread model support from mcfgthread 2022-10-19 13:52:37 +00:00
configure.ac LoongArch Port: libgcc 2022-03-29 17:43:35 +08:00
crtstuff.c Update copyright years. 2023-01-16 11:52:17 +01:00
dfp-bit.c Update copyright years. 2023-01-16 11:52:17 +01:00
dfp-bit.h Update copyright years. 2023-01-16 11:52:17 +01:00
divmod.c Update copyright years. 2023-01-16 11:52:17 +01:00
emutls.c Update copyright years. 2023-01-16 11:52:17 +01:00
enable-execute-stack-empty.c
enable-execute-stack-mprotect.c Update copyright years. 2023-01-16 11:52:17 +01:00
find-symver.awk Update copyright years. 2023-01-16 11:52:17 +01:00
fixed-bit.c Update copyright years. 2023-01-16 11:52:17 +01:00
fixed-bit.h Update copyright years. 2023-01-16 11:52:17 +01:00
fixed-obj.mk
floatunsidf.c
floatunsisf.c
floatunsitf.c
floatunsixf.c
fp-bit.c Update copyright years. 2023-01-16 11:52:17 +01:00
fp-bit.h Update copyright years. 2023-01-16 11:52:17 +01:00
gbl-ctors.h Update copyright years. 2023-01-16 11:52:17 +01:00
gcov.h Update copyright years. 2023-01-16 11:52:17 +01:00
gen-fixed.sh
generic-morestack-thread.c Update copyright years. 2023-01-16 11:52:17 +01:00
generic-morestack.c Update copyright years. 2023-01-16 11:52:17 +01:00
generic-morestack.h Update copyright years. 2023-01-16 11:52:17 +01:00
gstdint.h
gthr-posix.h Update copyright years. 2023-01-16 11:52:17 +01:00
gthr-single.h Update copyright years. 2023-01-16 11:52:17 +01:00
gthr.h Update copyright years. 2023-01-16 11:52:17 +01:00
libgcc-std.ver.in Update copyright years. 2023-01-16 11:52:17 +01:00
libgcc2.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcc2.h PR target/107299: Fix build issue when long double is IEEE 128-bit 2023-03-06 17:38:33 -05:00
libgcov-driver-system.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-driver.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-interface.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-merge.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-profiler.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov-util.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcov.h Update copyright years. 2023-01-16 11:52:17 +01:00
Makefile.in Update copyright years. 2023-01-16 11:52:17 +01:00
memcmp.c
memcpy.c
memmove.c
memset.c
mkheader.sh Update copyright years. 2023-01-16 11:52:17 +01:00
mkmap-flat.awk Update copyright years. 2023-01-16 11:52:17 +01:00
mkmap-symver.awk Update copyright years. 2023-01-16 11:52:17 +01:00
offloadstuff.c Update copyright years. 2023-01-16 11:52:17 +01:00
shared-object.mk
siditi-object.mk
static-object.mk
sync.c Update copyright years. 2023-01-16 11:52:17 +01:00
udivhi3.c Update copyright years. 2023-01-16 11:52:17 +01:00
udivmod.c Update copyright years. 2023-01-16 11:52:17 +01:00
udivmodhi4.c Update copyright years. 2023-01-16 11:52:17 +01:00
udivmodsi4.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-arm-common.inc Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-c.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-compat.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-compat.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2-btree.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2-execute_cfa.h libgcc: Fix uninitialized RA signing on AArch64 [PR107678] 2023-01-18 12:20:35 +00:00
unwind-dw2-fde-compat.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2-fde-dip.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2-fde.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2-fde.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-dw2.c libgcc: Fix uninitialized RA signing on AArch64 [PR107678] 2023-01-18 12:20:35 +00:00
unwind-dw2.h libgcc: Fix uninitialized RA signing on AArch64 [PR107678] 2023-01-18 12:20:35 +00:00
unwind-generic.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-pe.h Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-seh.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind-sjlj.c Update copyright years. 2023-01-16 11:52:17 +01:00
unwind.inc Update copyright years. 2023-01-16 11:52:17 +01:00
vtv_end.c Update copyright years. 2023-01-16 11:52:17 +01:00
vtv_end_preinit.c Update copyright years. 2023-01-16 11:52:17 +01:00
vtv_start.c Update copyright years. 2023-01-16 11:52:17 +01:00
vtv_start_preinit.c Update copyright years. 2023-01-16 11:52:17 +01:00