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| author | Julien Thierry <jthierry@redhat.com> | 2020-03-27 15:28:47 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-04-22 10:53:50 +0200 |
| commit | 65ea47dcf4f936987a5fbf839c97acea00f4f196 (patch) | |
| tree | bc960fe0d080dea37cb653326acaa47051ebdeba /tools/objtool/arch.h | |
| parent | 1ee444700e960b017558038a9443474e808b0045 (diff) | |
| download | linux-65ea47dcf4f936987a5fbf839c97acea00f4f196.tar.gz linux-65ea47dcf4f936987a5fbf839c97acea00f4f196.tar.bz2 linux-65ea47dcf4f936987a5fbf839c97acea00f4f196.zip | |
objtool: Support multiple stack_op per instruction
Instruction sets can include more or less complex operations which might
not fit the currently defined set of stack_ops.
Combining more than one stack_op provides more flexibility to describe
the behaviour of an instruction. This also reduces the need to define
new stack_ops specific to a single instruction set.
Allow instruction decoders to generate multiple stack_op per
instruction.
Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20200327152847.15294-11-jthierry@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/objtool/arch.h')
| -rw-r--r-- | tools/objtool/arch.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/objtool/arch.h b/tools/objtool/arch.h index a9a50a25ca66..f9883c431949 100644 --- a/tools/objtool/arch.h +++ b/tools/objtool/arch.h @@ -64,6 +64,7 @@ struct op_src { struct stack_op { struct op_dest dest; struct op_src src; + struct list_head list; }; struct instruction; @@ -73,7 +74,8 @@ void arch_initial_func_cfi_state(struct cfi_state *state); int arch_decode_instruction(struct elf *elf, struct section *sec, unsigned long offset, unsigned int maxlen, unsigned int *len, enum insn_type *type, - unsigned long *immediate, struct stack_op *op); + unsigned long *immediate, + struct list_head *ops_list); bool arch_callee_saved_reg(unsigned char reg); |