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linux-unwind.h (ppc_fallback_frame_state): Correct location of CR save area for 64-bit little-endian systems. 

2013-11-14  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
	    Alan Modra  <amodra@gmail.com>

	* config/rs6000/linux-unwind.h (ppc_fallback_frame_state): Correct
	location of CR save area for 64-bit little-endian systems.


Co-Authored-By: Alan Modra <amodra@gmail.com>

From-SVN: r204800
This commit is contained in:
Ulrich Weigand 2013-11-14 18:25:33 +00:00 committed by Ulrich Weigand
parent dc2faee140
commit 13e0981af5
2 changed files with 13 additions and 4 deletions
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6
libgcc/ChangeLog
View File

@ -1,3 +1,9 @@
2013-11-14 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Alan Modra <amodra@gmail.com>
* config/rs6000/linux-unwind.h (ppc_fallback_frame_state): Correct
location of CR save area for 64-bit little-endian systems.
2013-11-11 Eric Botcazou <ebotcazou@adacore.com>
* config.host (arm-wrs-vxworks): Replace arm/t-vxworks with arm/t-elf

11
libgcc/config/rs6000/linux-unwind.h
View File

@ -185,6 +185,7 @@ ppc_fallback_frame_state (struct _Unwind_Context *context,
{
struct gcc_regs *regs = get_regs (context);
struct gcc_vregs *vregs;
long cr_offset;
long new_cfa;
int i;
@ -206,11 +207,13 @@ ppc_fallback_frame_state (struct _Unwind_Context *context,
fs->regs.reg[i].loc.offset = (long) &regs->gpr[i] - new_cfa;
}
/* The CR is saved in the low 32 bits of regs->ccr. */
cr_offset = (long) &regs->ccr - new_cfa;
#ifndef __LITTLE_ENDIAN__
cr_offset += sizeof (long) - 4;
#endif
fs->regs.reg[R_CR2].how = REG_SAVED_OFFSET;
/* CR? regs are always 32-bit and PPC is big-endian, so in 64-bit
libgcc loc.offset needs to point to the low 32 bits of regs->ccr. */
fs->regs.reg[R_CR2].loc.offset = (long) &regs->ccr - new_cfa
+ sizeof (long) - 4;
fs->regs.reg[R_CR2].loc.offset = cr_offset;
fs->regs.reg[R_LR].how = REG_SAVED_OFFSET;
fs->regs.reg[R_LR].loc.offset = (long) &regs->link - new_cfa;