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re PR java/6748 (Array_3 testcase failing on powerpc-linux-gnu)

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2003-01-23  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	PR java/6748
	* config/rs6000/linux.h (MD_FALLBACK_FRAME_STATE_FOR): Don't destroy
	regs->nip. Fix rt_sigreturn frame layout. Add support for newer
	kernels.

From-SVN: r61675
This commit is contained in:
Franz Sirl 2003-01-23 22:28:48 +00:00 • committed by Franz Sirl
parent 1f369e606f
commit c4db7ecbc3
2 changed files with 42 additions and 11 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2003-01-23 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
PR java/6748
* config/rs6000/linux.h (MD_FALLBACK_FRAME_STATE_FOR): Don't destroy
regs->nip. Fix rt_sigreturn frame layout. Add support for newer
kernels.
2003-01-23 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* cpplex.c (cpp_interpret_charconst): Squelch warning with cast.

46
gcc/config/rs6000/linux.h
View file

@ -1,7 +1,7 @@
/* Definitions of target machine for GNU compiler,
for PowerPC machines running Linux.
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation,
Inc.
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
Contributed by Michael Meissner (meissner@cygnus.com).
This file is part of GNU CC.
@ -96,12 +96,34 @@ enum { SIGNAL_FRAMESIZE = 64 };
long new_cfa_; \
int i_; \
\
/* li r0, 0x7777; sc (rt_sigreturn) */ \
/* li r0, 0x6666; sc (sigreturn) */ \
if (((*(unsigned int *) (pc_+0) == 0x38007777) \
|| (*(unsigned int *) (pc_+0) == 0x38006666)) \
&& (*(unsigned int *) (pc_+4) == 0x44000002)) \
sc_ = (CONTEXT)->cfa + SIGNAL_FRAMESIZE; \
/* li r0, 0x7777; sc (sigreturn old) */ \
/* li r0, 0x0077; sc (sigreturn new) */ \
/* li r0, 0x6666; sc (rt_sigreturn old) */ \
/* li r0, 0x00AC; sc (rt_sigreturn new) */ \
if (*(unsigned int *) (pc_+4) != 0x44000002) \
break; \
if (*(unsigned int *) (pc_+0) == 0x38007777 \
|| *(unsigned int *) (pc_+0) == 0x38000077) \
{ \
struct sigframe { \
char gap[SIGNAL_FRAMESIZE]; \
struct sigcontext sigctx; \
} *rt_ = (CONTEXT)->cfa; \
sc_ = &rt_->sigctx; \
} \
else if (*(unsigned int *) (pc_+0) == 0x38006666 \
|| *(unsigned int *) (pc_+0) == 0x380000AC) \
{ \
struct rt_sigframe { \
char gap[SIGNAL_FRAMESIZE]; \
unsigned long _unused[2]; \
struct siginfo *pinfo; \
void *puc; \
struct siginfo info; \
struct ucontext uc; \
} *rt_ = (CONTEXT)->cfa; \
sc_ = &rt_->uc.uc_mcontext; \
} \
else \
break; \
\
@ -124,11 +146,13 @@ enum { SIGNAL_FRAMESIZE = 64 };
\
/* The unwinder expects the IP to point to the following insn, \
whereas the kernel returns the address of the actual \
faulting insn. */ \
sc_->regs->nip += 4; \
faulting insn. We store NIP+4 in an unused register slot to \
get the same result for multiple evaluation of the same signal \
frame. */ \
sc_->regs->gpr[47] = sc_->regs->nip + 4; \
(FS)->regs.reg[CR0_REGNO].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[CR0_REGNO].loc.offset \
= (long)&(sc_->regs->nip) - new_cfa_; \
= (long)&(sc_->regs->gpr[47]) - new_cfa_; \
(FS)->retaddr_column = CR0_REGNO; \
goto SUCCESS; \
} while (0)