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| author | Jordan Niethe <jniethe5@gmail.com> | 2020-05-06 13:40:25 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-19 00:10:36 +1000 |
| commit | 7c95d8893fb55869882c9f68f4c94840dc43f18f (patch) | |
| tree | 96566e99f23b18330b70ea10a6e6b4128d0c52b1 /arch/powerpc/include/asm/code-patching.h | |
| parent | 5a7fdcab54ef17c395fc47e73c828a1432e51683 (diff) | |
| download | linux-7c95d8893fb55869882c9f68f4c94840dc43f18f.tar.bz2 | |
powerpc: Change calling convention for create_branch() et. al.
create_branch(), create_cond_branch() and translate_branch() return the
instruction that they create, or return 0 to signal an error. Separate
these concerns in preparation for an instruction type that is not just
an unsigned int. Fill the created instruction to a pointer passed as
the first parameter to the function and use a non-zero return value to
signify an error.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-6-jniethe5@gmail.com
Diffstat (limited to 'arch/powerpc/include/asm/code-patching.h')
| -rw-r--r-- | arch/powerpc/include/asm/code-patching.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/code-patching.h b/arch/powerpc/include/asm/code-patching.h index 898b54262881..351dda7215b6 100644 --- a/arch/powerpc/include/asm/code-patching.h +++ b/arch/powerpc/include/asm/code-patching.h @@ -22,10 +22,10 @@ #define BRANCH_ABSOLUTE 0x2 bool is_offset_in_branch_range(long offset); -unsigned int create_branch(const unsigned int *addr, - unsigned long target, int flags); -unsigned int create_cond_branch(const unsigned int *addr, - unsigned long target, int flags); +int create_branch(unsigned int *instr, const unsigned int *addr, + unsigned long target, int flags); +int create_cond_branch(unsigned int *instr, const unsigned int *addr, + unsigned long target, int flags); int patch_branch(unsigned int *addr, unsigned long target, int flags); int patch_instruction(unsigned int *addr, unsigned int instr); int raw_patch_instruction(unsigned int *addr, unsigned int instr); @@ -60,8 +60,8 @@ int instr_is_relative_branch(unsigned int instr); int instr_is_relative_link_branch(unsigned int instr); int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr); unsigned long branch_target(const unsigned int *instr); -unsigned int translate_branch(const unsigned int *dest, - const unsigned int *src); +int translate_branch(unsigned int *instr, const unsigned int *dest, + const unsigned int *src); extern bool is_conditional_branch(unsigned int instr); #ifdef CONFIG_PPC_BOOK3E_64 void __patch_exception(int exc, unsigned long addr); |