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[SPARC]: Handle UNWIND_INFO properly.

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For sparc32 we need R_SPARC_UA32 relocation support, for
sparc64 we need the handle R_SPARC_DISP32 relocations.

Based upon reports and initial patch by Martin Habets.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-05-12 12:45:50 -07:00
parent 1f8aa2f66b
commit 06a1be167e
4 changed files with 9 additions and 2 deletions
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1
arch/sparc/kernel/module.c
View File

@ -113,6 +113,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
switch (ELF32_R_TYPE(rel[i].r_info)) {
case R_SPARC_32:
case R_SPARC_UA32:
location[0] = v >> 24;
location[1] = v >> 16;
location[2] = v >> 8;

3
arch/sparc64/defconfig
View File

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.17-rc3
# Mon May 8 15:12:53 2006
# Fri May 12 12:43:49 2006
#
CONFIG_SPARC=y
CONFIG_SPARC64=y
@ -1309,6 +1309,7 @@ CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_INFO is not set
CONFIG_DEBUG_FS=y
# CONFIG_DEBUG_VM is not set
# CONFIG_UNWIND_INFO is not set
CONFIG_FORCED_INLINING=y
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_DEBUG_STACK_USAGE is not set

5
arch/sparc64/kernel/module.c
View File

@ -143,6 +143,11 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
location[3] = v >> 0;
break;
case R_SPARC_DISP32:
v -= (Elf64_Addr) location;
*loc32 = v;
break;
case R_SPARC_WDISP30:
v -= (Elf64_Addr) location;
*loc32 = (*loc32 & ~0x3fffffff) |

2
lib/Kconfig.debug
View File

@ -189,7 +189,7 @@ config FRAME_POINTER
config UNWIND_INFO
bool "Compile the kernel with frame unwind information"
depends on !IA64
depends on !MODULES || !(MIPS || PARISC || PPC || SUPERH || SPARC64 || V850)
depends on !MODULES || !(MIPS || PARISC || PPC || SUPERH || V850)
help
If you say Y here the resulting kernel image will be slightly larger
but not slower, and it will give very useful debugging information.