This enables GENERIC_BUG_RELATIVE_POINTERS on Power so that 32-bit
offsets are stored in the bug entries rather than 64-bit pointers.
While this doesn't save space for 32-bit machines, use it anyway so
there is only one code path.
Signed-off-by: Jordan Niethe <jniet...@gmail.com>
---
v2: Remove non-relative pointers code
---
arch/powerpc/Kconfig | 4 ++++
arch/powerpc/include/asm/bug.h | 8 ++++----
arch/powerpc/xmon/xmon.c | 4 ++--
3 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index e9f13fe08492..294108e0e5c6 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -311,6 +311,10 @@ config GENERIC_BUG
default y
depends on BUG
+config GENERIC_BUG_RELATIVE_POINTERS
+ def_bool y
+ depends on GENERIC_BUG
+
config SYS_SUPPORTS_APM_EMULATION
default y if PMAC_APM_EMU
bool
diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h
index 338f36cd9934..ba0500872cce 100644
--- a/arch/powerpc/include/asm/bug.h
+++ b/arch/powerpc/include/asm/bug.h
@@ -12,7 +12,7 @@
#ifdef CONFIG_DEBUG_BUGVERBOSE
.macro EMIT_BUG_ENTRY addr,file,line,flags
.section __bug_table,"aw"
-5001: PPC_LONG \addr, 5002f
+5001: .4byte \addr - 5001b, 5002f - 5001b
.short \line, \flags
.org 5001b+BUG_ENTRY_SIZE
.previous
@@ -23,7 +23,7 @@
#else
.macro EMIT_BUG_ENTRY addr,file,line,flags
.section __bug_table,"aw"
-5001: PPC_LONG \addr
+5001: .4byte \addr - 5001b
.short \flags
.org 5001b+BUG_ENTRY_SIZE
.previous
@@ -36,14 +36,14 @@
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define _EMIT_BUG_ENTRY \
".section __bug_table,\"aw\"\n" \
- "2:\t" PPC_LONG "1b, %0\n" \
+ "2:\t.4byte 1b - 2b, %0 - 2b\n" \
"\t.short %1, %2\n" \
".org 2b+%3\n" \
".previous\n"
#else
#define _EMIT_BUG_ENTRY \
".section __bug_table,\"aw\"\n" \
- "2:\t" PPC_LONG "1b\n" \
+ "2:\t.4byte 1b - 2b\n" \
"\t.short %2\n" \
".org 2b+%3\n" \
".previous\n"
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 55c43a6c9111..9704c81aff7d 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -1745,9 +1745,9 @@ static void print_bug_trap(struct pt_regs *regs)
#ifdef CONFIG_DEBUG_BUGVERBOSE
printf("kernel BUG at %s:%u!\n",
- bug->file, bug->line);
+ (char *)bug + bug->file_disp, bug->line);
#else
- printf("kernel BUG at %px!\n", (void *)bug->bug_addr);
+ printf("kernel BUG at %px!\n", (void *)bug + bug->bug_addr_disp);
#endif
#endif /* CONFIG_BUG */
}
--
2.17.1
