diff options
Diffstat (limited to 'tools/objtool/arch/x86/decode.c')
-rw-r--r-- | tools/objtool/arch/x86/decode.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c index 7567c893f45e..3ce7b54003c2 100644 --- a/tools/objtool/arch/x86/decode.c +++ b/tools/objtool/arch/x86/decode.c @@ -36,7 +36,7 @@ static int is_x86_64(const struct elf *elf) case EM_386: return 0; default: - WARN("unexpected ELF machine type %d", elf->ehdr.e_machine); + ERROR("unexpected ELF machine type %d", elf->ehdr.e_machine); return -1; } } @@ -173,7 +173,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec ret = insn_decode(&ins, sec->data->d_buf + offset, maxlen, x86_64 ? INSN_MODE_64 : INSN_MODE_32); if (ret < 0) { - WARN("can't decode instruction at %s:0x%lx", sec->name, offset); + ERROR("can't decode instruction at %s:0x%lx", sec->name, offset); return -1; } @@ -321,7 +321,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec break; default: - /* WARN ? */ + /* ERROR ? */ break; } @@ -522,7 +522,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec case INAT_PFX_REPNE: if (modrm == 0xca) /* eretu/erets */ - insn->type = INSN_CONTEXT_SWITCH; + insn->type = INSN_SYSRET; break; default: if (modrm == 0xca) @@ -535,11 +535,15 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec insn->type = INSN_JUMP_CONDITIONAL; - } else if (op2 == 0x05 || op2 == 0x07 || op2 == 0x34 || - op2 == 0x35) { + } else if (op2 == 0x05 || op2 == 0x34) { - /* sysenter, sysret */ - insn->type = INSN_CONTEXT_SWITCH; + /* syscall, sysenter */ + insn->type = INSN_SYSCALL; + + } else if (op2 == 0x07 || op2 == 0x35) { + + /* sysret, sysexit */ + insn->type = INSN_SYSRET; } else if (op2 == 0x0b || op2 == 0xb9) { @@ -561,8 +565,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec if (ins.prefixes.nbytes == 1 && ins.prefixes.bytes[0] == 0xf2) { /* ENQCMD cannot be used in the kernel. */ - WARN("ENQCMD instruction at %s:%lx", sec->name, - offset); + WARN("ENQCMD instruction at %s:%lx", sec->name, offset); } } else if (op2 == 0xa0 || op2 == 0xa8) { @@ -646,7 +649,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec if (disp->sym->type == STT_SECTION) func = find_symbol_by_offset(disp->sym->sec, reloc_addend(disp)); if (!func) { - WARN("no func for pv_ops[]"); + ERROR("no func for pv_ops[]"); return -1; } @@ -677,7 +680,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec case 0xca: /* retf */ case 0xcb: /* retf */ - insn->type = INSN_CONTEXT_SWITCH; + insn->type = INSN_SYSRET; break; case 0xe0: /* loopne */ @@ -722,7 +725,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec } else if (modrm_reg == 5) { /* jmpf */ - insn->type = INSN_CONTEXT_SWITCH; + insn->type = INSN_SYSRET; } else if (modrm_reg == 6) { @@ -776,7 +779,7 @@ const char *arch_nop_insn(int len) }; if (len < 1 || len > 5) { - WARN("invalid NOP size: %d\n", len); + ERROR("invalid NOP size: %d\n", len); return NULL; } @@ -796,7 +799,7 @@ const char *arch_ret_insn(int len) }; if (len < 1 || len > 5) { - WARN("invalid RET size: %d\n", len); + ERROR("invalid RET size: %d\n", len); return NULL; } |