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authorGreg Ungerer <gerg@linux-m68k.org>2016-07-21 16:28:48 +1000
committerGreg Ungerer <gerg@linux-m68k.org>2016-07-25 14:40:28 +1000
commit89e6ffd9f03936d9f6f0332426e4a3cf379b90bd (patch)
tree0a889cd15af53bece41ba4997111809fa3f4be73 /arch/m68k/include
parent47ef4ad2684d380dd6d596140fb79395115c3950 (diff)
downloadop-kernel-dev-89e6ffd9f03936d9f6f0332426e4a3cf379b90bd.zip
op-kernel-dev-89e6ffd9f03936d9f6f0332426e4a3cf379b90bd.tar.gz
m68k: fix bFLT executable running on MMU enabled systems
Even after recent changes to support running flat format executables on MMU enabled systems (by nicolas.pitre@linaro.org) they still failed to run on m68k/ColdFire MMU enabled systems. On trying to run a flat format binary the application would immediately crash with a SIGSEGV. Code to setup the D5 register with the base of the application data region was only in the non-MMU code path, so it was not being set for the MMU enabled case. Flat binaries on m68k/ColdFire use this to support GOT/PIC flat built application code. Fix this so that D5 is always setup when loading/running a bFLT executable on m68k systems. Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
Diffstat (limited to 'arch/m68k/include')
-rw-r--r--arch/m68k/include/asm/flat.h6
-rw-r--r--arch/m68k/include/asm/processor.h2
2 files changed, 6 insertions, 2 deletions
diff --git a/arch/m68k/include/asm/flat.h b/arch/m68k/include/asm/flat.h
index f9454b8..f46c2f0 100644
--- a/arch/m68k/include/asm/flat.h
+++ b/arch/m68k/include/asm/flat.h
@@ -18,4 +18,10 @@ static inline int flat_set_persistent(unsigned long relval,
return 0;
}
+#define FLAT_PLAT_INIT(regs) \
+ do { \
+ if (current->mm) \
+ (regs)->d5 = current->mm->start_data; \
+ } while (0)
+
#endif /* __M68KNOMMU_FLAT_H__ */
diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h
index a6ce2ec..46672d1 100644
--- a/arch/m68k/include/asm/processor.h
+++ b/arch/m68k/include/asm/processor.h
@@ -131,8 +131,6 @@ extern int handle_kernel_fault(struct pt_regs *regs);
do { \
(_regs)->pc = (_pc); \
setframeformat(_regs); \
- if (current->mm) \
- (_regs)->d5 = current->mm->start_data; \
(_regs)->sr &= ~0x2000; \
wrusp(_usp); \
} while(0)
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