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| author | Ingo Molnar <mingo@kernel.org> | 2020-05-18 12:00:36 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-05-18 12:09:37 +0200 |
| commit | 7c0577f4e609f7278ebd6d21e2de82b42f110944 (patch) | |
| tree | 4136e3c6beb37726f16cf1f6270f3f16cde7897e /tools/objtool | |
| parent | objtool: optimize add_dead_ends for split sections (diff) | |
| parent | Linux 5.7-rc6 (diff) | |
| download | linux-7c0577f4e609f7278ebd6d21e2de82b42f110944.tar.xz linux-7c0577f4e609f7278ebd6d21e2de82b42f110944.zip | |
Merge tag 'v5.7-rc6' into objtool/core, to pick up fixes and resolve semantic conflict
Resolve structural conflict between:
59566b0b622e: ("x86/ftrace: Have ftrace trampolines turn read-only at the end of system boot up")
which introduced a new reference to 'ftrace_epilogue', and:
0298739b7983: ("x86,ftrace: Fix ftrace_regs_caller() unwind")
Which renamed it to 'ftrace_caller_end'. Rename the new usage site in the merge commit.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/objtool')
| -rw-r--r-- | tools/objtool/check.c | 17 | ||||
| -rw-r--r-- | tools/objtool/elf.h | 7 |
2 files changed, 18 insertions, 6 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 6b2b458a5b0e..e36a818a2fed 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -73,6 +73,17 @@ static struct instruction *next_insn_same_func(struct objtool_file *file, return find_insn(file, func->cfunc->sec, func->cfunc->offset); } +static struct instruction *prev_insn_same_sym(struct objtool_file *file, + struct instruction *insn) +{ + struct instruction *prev = list_prev_entry(insn, list); + + if (&prev->list != &file->insn_list && prev->func == insn->func) + return prev; + + return NULL; +} + #define func_for_each_insn(file, func, insn) \ for (insn = find_insn(file, func->sec, func->offset); \ insn; \ @@ -1096,8 +1107,8 @@ static struct rela *find_jump_table(struct objtool_file *file, * it. */ for (; - &insn->list != &file->insn_list && insn->func && insn->func->pfunc == func; - insn = insn->first_jump_src ?: list_prev_entry(insn, list)) { + insn && insn->func && insn->func->pfunc == func; + insn = insn->first_jump_src ?: prev_insn_same_sym(file, insn)) { if (insn != orig_insn && insn->type == INSN_JUMP_DYNAMIC) break; @@ -1613,7 +1624,7 @@ static int update_cfi_state_regs(struct instruction *insn, { struct cfi_reg *cfa = &cfi->cfa; - if (cfa->base != CFI_SP) + if (cfa->base != CFI_SP && cfa->base != CFI_SP_INDIRECT) return 0; /* push */ diff --git a/tools/objtool/elf.h b/tools/objtool/elf.h index 9d6bb072849c..f4fe1d6ea392 100644 --- a/tools/objtool/elf.h +++ b/tools/objtool/elf.h @@ -89,9 +89,10 @@ struct elf { #define OFFSET_STRIDE (1UL << OFFSET_STRIDE_BITS) #define OFFSET_STRIDE_MASK (~(OFFSET_STRIDE - 1)) -#define for_offset_range(_offset, _start, _end) \ - for (_offset = ((_start) & OFFSET_STRIDE_MASK); \ - _offset <= ((_end) & OFFSET_STRIDE_MASK); \ +#define for_offset_range(_offset, _start, _end) \ + for (_offset = ((_start) & OFFSET_STRIDE_MASK); \ + _offset >= ((_start) & OFFSET_STRIDE_MASK) && \ + _offset <= ((_end) & OFFSET_STRIDE_MASK); \ _offset += OFFSET_STRIDE) static inline u32 sec_offset_hash(struct section *sec, unsigned long offset) |