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| author | Will Deacon <will.deacon@arm.com> | 2013-05-08 17:29:24 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2013-06-12 11:23:01 +0100 |
| commit | adace89562c7a9645b8dc84f6e1ac7ba8756094e (patch) | |
| tree | 8a2cef419d80b54769da7cf5853ff4292f9e8237 | |
| parent | 73150c983ac1f9b7653cfd3823b1ad4a44aad3bf (diff) | |
| download | linux-adace89562c7a9645b8dc84f6e1ac7ba8756094e.tar.bz2 | |
arm64: extable: sort the exception table at build time
As is done for other architectures, sort the exception table at
build-time rather than during boot.
Since sortextable appears to be a standalone C program relying on the
host elf.h to provide EM_AARCH64, I've had to add a conditional check in
order to allow cross-compilation on machines that aren't running a
bleeding-edge libc-dev.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm64/kernel/vmlinux.lds.S | 10 | ||||
| -rw-r--r-- | scripts/sortextable.c | 5 |
3 files changed, 7 insertions, 9 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 56b3f6d447ae..c3e3a17215a0 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -7,6 +7,7 @@ config ARM64 select ARM_AMBA select ARM_ARCH_TIMER select ARM_GIC + select BUILDTIME_EXTABLE_SORT select CLONE_BACKWARDS select COMMON_CLK select GENERIC_CLOCKEVENTS diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index 3fae2be8b016..5e06a1786e26 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -56,7 +56,7 @@ SECTIONS } RO_DATA(PAGE_SIZE) - + EXCEPTION_TABLE(8) _etext = .; /* End of text and rodata section */ . = ALIGN(PAGE_SIZE); @@ -99,14 +99,6 @@ SECTIONS READ_MOSTLY_DATA(64) /* - * The exception fixup table (might need resorting at runtime) - */ - . = ALIGN(32); - __start___ex_table = .; - *(__ex_table) - __stop___ex_table = .; - - /* * and the usual data section */ DATA_DATA diff --git a/scripts/sortextable.c b/scripts/sortextable.c index 1f10e89d15b4..f9ce1160419b 100644 --- a/scripts/sortextable.c +++ b/scripts/sortextable.c @@ -31,6 +31,10 @@ #include <tools/be_byteshift.h> #include <tools/le_byteshift.h> +#ifndef EM_AARCH64 +#define EM_AARCH64 183 +#endif + static int fd_map; /* File descriptor for file being modified. */ static int mmap_failed; /* Boolean flag. */ static void *ehdr_curr; /* current ElfXX_Ehdr * for resource cleanup */ @@ -249,6 +253,7 @@ do_file(char const *const fname) custom_sort = sort_relative_table; break; case EM_ARM: + case EM_AARCH64: case EM_MIPS: break; } /* end switch */ |