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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)) { switch (ELF32_R_TYPE(rel[i].r_info)) {
case R_SPARC_32: case R_SPARC_32:
case R_SPARC_UA32:
location[0] = v >> 24; location[0] = v >> 24;
location[1] = v >> 16; location[1] = v >> 16;
location[2] = v >> 8; location[2] = v >> 8;

3
arch/sparc64/defconfig
View file

@ -1,7 +1,7 @@
# #
# Automatically generated make config: don't edit # Automatically generated make config: don't edit
# Linux kernel version: 2.6.17-rc3 # 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_SPARC=y
CONFIG_SPARC64=y CONFIG_SPARC64=y
@ -1309,6 +1309,7 @@ CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_INFO is not set # CONFIG_DEBUG_INFO is not set
CONFIG_DEBUG_FS=y CONFIG_DEBUG_FS=y
# CONFIG_DEBUG_VM is not set # CONFIG_DEBUG_VM is not set
# CONFIG_UNWIND_INFO is not set
CONFIG_FORCED_INLINING=y CONFIG_FORCED_INLINING=y
# CONFIG_RCU_TORTURE_TEST is not set # CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_DEBUG_STACK_USAGE 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; location[3] = v >> 0;
break; break;
case R_SPARC_DISP32:
v -= (Elf64_Addr) location;
*loc32 = v;
break;
case R_SPARC_WDISP30: case R_SPARC_WDISP30:
v -= (Elf64_Addr) location; v -= (Elf64_Addr) location;
*loc32 = (*loc32 & ~0x3fffffff) | *loc32 = (*loc32 & ~0x3fffffff) |

2
lib/Kconfig.debug
View file

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