From 4b5e2e7ffef87ae864f3f4546ee5753556e7550b Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 23 Mar 2020 21:17:50 +0100 Subject: objtool: Rearrange validate_section() In preparation of further changes, once again break out the loop body. No functional changes intended. Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Miroslav Benes Reviewed-by: Alexandre Chartre Acked-by: Josh Poimboeuf Link: https://lkml.kernel.org/r/20200416115119.405863817@infradead.org Signed-off-by: Ingo Molnar --- tools/objtool/check.c | 51 +++++++++++++++++++++++++++++---------------------- 1 file changed, 29 insertions(+), 22 deletions(-) (limited to 'tools/objtool') diff --git a/tools/objtool/check.c b/tools/objtool/check.c index e201aa1d01f5..f49bf83e0501 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -2486,12 +2486,37 @@ static bool ignore_unreachable_insn(struct instruction *insn) return false; } -static int validate_section(struct objtool_file *file, struct section *sec) +static int validate_symbol(struct objtool_file *file, struct section *sec, + struct symbol *sym, struct insn_state *state) { - struct symbol *func; struct instruction *insn; + int ret; + + if (!sym->len) { + WARN("%s() is missing an ELF size annotation", sym->name); + return 1; + } + + if (sym->pfunc != sym || sym->alias != sym) + return 0; + + insn = find_insn(file, sec, sym->offset); + if (!insn || insn->ignore || insn->visited) + return 0; + + state->uaccess = sym->uaccess_safe; + + ret = validate_branch(file, insn->func, insn, *state); + if (ret && backtrace) + BT_FUNC("<=== (sym)", insn); + return ret; +} + +static int validate_section(struct objtool_file *file, struct section *sec) +{ struct insn_state state; - int ret, warnings = 0; + struct symbol *func; + int warnings = 0; /* * We need the full vmlinux for noinstr validation, otherwise we can @@ -2505,31 +2530,13 @@ static int validate_section(struct objtool_file *file, struct section *sec) if (func->type != STT_FUNC) continue; - if (!func->len) { - WARN("%s() is missing an ELF size annotation", - func->name); - warnings++; - } - - if (func->pfunc != func || func->alias != func) - continue; - - insn = find_insn(file, sec, func->offset); - if (!insn || insn->ignore || insn->visited) - continue; - clear_insn_state(&state); state.cfi.cfa = initial_func_cfi.cfa; memcpy(&state.cfi.regs, &initial_func_cfi.regs, CFI_NUM_REGS * sizeof(struct cfi_reg)); state.cfi.stack_size = initial_func_cfi.cfa.offset; - state.uaccess = func->uaccess_safe; - - ret = validate_branch(file, func, insn, state); - if (ret && backtrace) - BT_FUNC("<=== (func)", insn); - warnings += ret; + warnings += validate_symbol(file, sec, func, &state); } return warnings; -- cgit v1.2.3-59-g8ed1b