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https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
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objtool/x86: Separate arch-specific and generic parts
Move init_orc_entry(), write_orc_entry(), reg_name(), orc_type_name() and print_reg() from generic orc_gen.c and orc_dump.c to arch-specific orc.c, then introduce a new function orc_print_dump() to print info. This is preparation for later patch, no functionality change. Co-developed-by: Jinyang He <hejinyang@loongson.cn> Signed-off-by: Jinyang He <hejinyang@loongson.cn> Co-developed-by: Youling Tang <tangyouling@loongson.cn> Signed-off-by: Youling Tang <tangyouling@loongson.cn> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Tiezhu Yang
Huacai Chen
parent
b2d23158e6
commit
b8e85e6f3a
@ -1,5 +1,6 @@
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objtool-y += special.o
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objtool-y += decode.o
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objtool-y += orc.o
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inat_tables_script = ../arch/x86/tools/gen-insn-attr-x86.awk
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inat_tables_maps = ../arch/x86/lib/x86-opcode-map.txt
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188
tools/objtool/arch/x86/orc.c
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188
tools/objtool/arch/x86/orc.c
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@ -0,0 +1,188 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <linux/objtool_types.h>
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#include <asm/orc_types.h>
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#include <objtool/check.h>
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#include <objtool/orc.h>
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#include <objtool/warn.h>
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#include <objtool/endianness.h>
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int init_orc_entry(struct orc_entry *orc, struct cfi_state *cfi, struct instruction *insn)
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{
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struct cfi_reg *bp = &cfi->regs[CFI_BP];
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memset(orc, 0, sizeof(*orc));
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if (!cfi) {
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/*
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* This is usually either unreachable nops/traps (which don't
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* trigger unreachable instruction warnings), or
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* STACK_FRAME_NON_STANDARD functions.
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*/
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orc->type = ORC_TYPE_UNDEFINED;
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return 0;
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}
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switch (cfi->type) {
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case UNWIND_HINT_TYPE_UNDEFINED:
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orc->type = ORC_TYPE_UNDEFINED;
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return 0;
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case UNWIND_HINT_TYPE_END_OF_STACK:
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orc->type = ORC_TYPE_END_OF_STACK;
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return 0;
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case UNWIND_HINT_TYPE_CALL:
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orc->type = ORC_TYPE_CALL;
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break;
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case UNWIND_HINT_TYPE_REGS:
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orc->type = ORC_TYPE_REGS;
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break;
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case UNWIND_HINT_TYPE_REGS_PARTIAL:
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orc->type = ORC_TYPE_REGS_PARTIAL;
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break;
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default:
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WARN_INSN(insn, "unknown unwind hint type %d", cfi->type);
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return -1;
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}
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orc->signal = cfi->signal;
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switch (cfi->cfa.base) {
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case CFI_SP:
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orc->sp_reg = ORC_REG_SP;
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break;
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case CFI_SP_INDIRECT:
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orc->sp_reg = ORC_REG_SP_INDIRECT;
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break;
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case CFI_BP:
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orc->sp_reg = ORC_REG_BP;
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break;
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case CFI_BP_INDIRECT:
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orc->sp_reg = ORC_REG_BP_INDIRECT;
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break;
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case CFI_R10:
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orc->sp_reg = ORC_REG_R10;
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break;
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case CFI_R13:
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orc->sp_reg = ORC_REG_R13;
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break;
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case CFI_DI:
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orc->sp_reg = ORC_REG_DI;
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break;
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case CFI_DX:
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orc->sp_reg = ORC_REG_DX;
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break;
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default:
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WARN_INSN(insn, "unknown CFA base reg %d", cfi->cfa.base);
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return -1;
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}
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switch (bp->base) {
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case CFI_UNDEFINED:
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orc->bp_reg = ORC_REG_UNDEFINED;
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break;
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case CFI_CFA:
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orc->bp_reg = ORC_REG_PREV_SP;
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break;
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case CFI_BP:
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orc->bp_reg = ORC_REG_BP;
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break;
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default:
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WARN_INSN(insn, "unknown BP base reg %d", bp->base);
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return -1;
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}
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orc->sp_offset = cfi->cfa.offset;
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orc->bp_offset = bp->offset;
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return 0;
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}
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int write_orc_entry(struct elf *elf, struct section *orc_sec,
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struct section *ip_sec, unsigned int idx,
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struct section *insn_sec, unsigned long insn_off,
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struct orc_entry *o)
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{
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struct orc_entry *orc;
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/* populate ORC data */
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orc = (struct orc_entry *)orc_sec->data->d_buf + idx;
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memcpy(orc, o, sizeof(*orc));
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orc->sp_offset = bswap_if_needed(elf, orc->sp_offset);
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orc->bp_offset = bswap_if_needed(elf, orc->bp_offset);
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/* populate reloc for ip */
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if (!elf_init_reloc_text_sym(elf, ip_sec, idx * sizeof(int), idx,
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insn_sec, insn_off))
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return -1;
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return 0;
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}
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static const char *reg_name(unsigned int reg)
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{
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switch (reg) {
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case ORC_REG_PREV_SP:
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return "prevsp";
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case ORC_REG_DX:
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return "dx";
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case ORC_REG_DI:
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return "di";
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case ORC_REG_BP:
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return "bp";
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case ORC_REG_SP:
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return "sp";
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case ORC_REG_R10:
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return "r10";
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case ORC_REG_R13:
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return "r13";
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case ORC_REG_BP_INDIRECT:
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return "bp(ind)";
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case ORC_REG_SP_INDIRECT:
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return "sp(ind)";
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default:
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return "?";
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}
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}
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static const char *orc_type_name(unsigned int type)
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{
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switch (type) {
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case ORC_TYPE_UNDEFINED:
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return "(und)";
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case ORC_TYPE_END_OF_STACK:
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return "end";
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case ORC_TYPE_CALL:
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return "call";
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case ORC_TYPE_REGS:
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return "regs";
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case ORC_TYPE_REGS_PARTIAL:
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return "regs (partial)";
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default:
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return "?";
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}
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}
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static void print_reg(unsigned int reg, int offset)
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{
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if (reg == ORC_REG_BP_INDIRECT)
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printf("(bp%+d)", offset);
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else if (reg == ORC_REG_SP_INDIRECT)
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printf("(sp)%+d", offset);
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else if (reg == ORC_REG_UNDEFINED)
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printf("(und)");
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else
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printf("%s%+d", reg_name(reg), offset);
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}
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void orc_print_dump(struct elf *dummy_elf, struct orc_entry *orc, int i)
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{
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printf("type:%s", orc_type_name(orc[i].type));
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printf(" sp:");
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print_reg(orc[i].sp_reg, bswap_if_needed(dummy_elf, orc[i].sp_offset));
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printf(" bp:");
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print_reg(orc[i].bp_reg, bswap_if_needed(dummy_elf, orc[i].bp_offset));
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printf(" signal:%d\n", orc[i].signal);
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}
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14
tools/objtool/include/objtool/orc.h
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14
tools/objtool/include/objtool/orc.h
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@ -0,0 +1,14 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _OBJTOOL_ORC_H
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#define _OBJTOOL_ORC_H
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#include <objtool/check.h>
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int init_orc_entry(struct orc_entry *orc, struct cfi_state *cfi, struct instruction *insn);
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void orc_print_dump(struct elf *dummy_elf, struct orc_entry *orc, int i);
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int write_orc_entry(struct elf *elf, struct section *orc_sec,
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struct section *ip_sec, unsigned int idx,
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struct section *insn_sec, unsigned long insn_off,
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struct orc_entry *o);
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#endif /* _OBJTOOL_ORC_H */
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@ -6,65 +6,10 @@
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#include <unistd.h>
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#include <asm/orc_types.h>
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#include <objtool/objtool.h>
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#include <objtool/orc.h>
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#include <objtool/warn.h>
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#include <objtool/endianness.h>
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static const char *reg_name(unsigned int reg)
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{
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switch (reg) {
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case ORC_REG_PREV_SP:
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return "prevsp";
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case ORC_REG_DX:
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return "dx";
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case ORC_REG_DI:
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return "di";
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case ORC_REG_BP:
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return "bp";
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case ORC_REG_SP:
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return "sp";
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case ORC_REG_R10:
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return "r10";
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case ORC_REG_R13:
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return "r13";
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case ORC_REG_BP_INDIRECT:
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return "bp(ind)";
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case ORC_REG_SP_INDIRECT:
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return "sp(ind)";
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default:
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return "?";
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}
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}
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static const char *orc_type_name(unsigned int type)
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{
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switch (type) {
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case ORC_TYPE_UNDEFINED:
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return "(und)";
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case ORC_TYPE_END_OF_STACK:
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return "end";
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case ORC_TYPE_CALL:
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return "call";
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case ORC_TYPE_REGS:
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return "regs";
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case ORC_TYPE_REGS_PARTIAL:
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return "regs (partial)";
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default:
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return "?";
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}
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}
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static void print_reg(unsigned int reg, int offset)
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{
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if (reg == ORC_REG_BP_INDIRECT)
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printf("(bp%+d)", offset);
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else if (reg == ORC_REG_SP_INDIRECT)
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printf("(sp)%+d", offset);
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else if (reg == ORC_REG_UNDEFINED)
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printf("(und)");
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else
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printf("%s%+d", reg_name(reg), offset);
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}
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int orc_dump(const char *_objname)
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{
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int fd, nr_entries, i, *orc_ip = NULL, orc_size = 0;
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@ -205,17 +150,7 @@ int orc_dump(const char *_objname)
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printf("%llx:", (unsigned long long)(orc_ip_addr + (i * sizeof(int)) + orc_ip[i]));
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}
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printf("type:%s", orc_type_name(orc[i].type));
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printf(" sp:");
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print_reg(orc[i].sp_reg, bswap_if_needed(&dummy_elf, orc[i].sp_offset));
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printf(" bp:");
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print_reg(orc[i].bp_reg, bswap_if_needed(&dummy_elf, orc[i].bp_offset));
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printf(" signal:%d\n", orc[i].signal);
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orc_print_dump(&dummy_elf, orc, i);
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}
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elf_end(elf);
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@ -10,121 +10,10 @@
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#include <asm/orc_types.h>
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#include <objtool/check.h>
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#include <objtool/orc.h>
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#include <objtool/warn.h>
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#include <objtool/endianness.h>
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static int init_orc_entry(struct orc_entry *orc, struct cfi_state *cfi,
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struct instruction *insn)
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{
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struct cfi_reg *bp = &cfi->regs[CFI_BP];
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memset(orc, 0, sizeof(*orc));
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if (!cfi) {
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/*
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* This is usually either unreachable nops/traps (which don't
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* trigger unreachable instruction warnings), or
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* STACK_FRAME_NON_STANDARD functions.
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*/
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orc->type = ORC_TYPE_UNDEFINED;
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return 0;
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}
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switch (cfi->type) {
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case UNWIND_HINT_TYPE_UNDEFINED:
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orc->type = ORC_TYPE_UNDEFINED;
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return 0;
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case UNWIND_HINT_TYPE_END_OF_STACK:
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orc->type = ORC_TYPE_END_OF_STACK;
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return 0;
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case UNWIND_HINT_TYPE_CALL:
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orc->type = ORC_TYPE_CALL;
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break;
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case UNWIND_HINT_TYPE_REGS:
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orc->type = ORC_TYPE_REGS;
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break;
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case UNWIND_HINT_TYPE_REGS_PARTIAL:
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orc->type = ORC_TYPE_REGS_PARTIAL;
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break;
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default:
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WARN_INSN(insn, "unknown unwind hint type %d", cfi->type);
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return -1;
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}
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orc->signal = cfi->signal;
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switch (cfi->cfa.base) {
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case CFI_SP:
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orc->sp_reg = ORC_REG_SP;
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break;
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case CFI_SP_INDIRECT:
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orc->sp_reg = ORC_REG_SP_INDIRECT;
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break;
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case CFI_BP:
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orc->sp_reg = ORC_REG_BP;
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break;
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case CFI_BP_INDIRECT:
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orc->sp_reg = ORC_REG_BP_INDIRECT;
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break;
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case CFI_R10:
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orc->sp_reg = ORC_REG_R10;
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break;
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case CFI_R13:
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orc->sp_reg = ORC_REG_R13;
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break;
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case CFI_DI:
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orc->sp_reg = ORC_REG_DI;
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break;
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case CFI_DX:
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orc->sp_reg = ORC_REG_DX;
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break;
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default:
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WARN_INSN(insn, "unknown CFA base reg %d", cfi->cfa.base);
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return -1;
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}
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switch (bp->base) {
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case CFI_UNDEFINED:
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orc->bp_reg = ORC_REG_UNDEFINED;
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break;
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case CFI_CFA:
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orc->bp_reg = ORC_REG_PREV_SP;
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break;
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case CFI_BP:
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orc->bp_reg = ORC_REG_BP;
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break;
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default:
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WARN_INSN(insn, "unknown BP base reg %d", bp->base);
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return -1;
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}
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orc->sp_offset = cfi->cfa.offset;
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orc->bp_offset = bp->offset;
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return 0;
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}
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static int write_orc_entry(struct elf *elf, struct section *orc_sec,
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struct section *ip_sec, unsigned int idx,
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struct section *insn_sec, unsigned long insn_off,
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struct orc_entry *o)
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{
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struct orc_entry *orc;
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/* populate ORC data */
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orc = (struct orc_entry *)orc_sec->data->d_buf + idx;
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memcpy(orc, o, sizeof(*orc));
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orc->sp_offset = bswap_if_needed(elf, orc->sp_offset);
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orc->bp_offset = bswap_if_needed(elf, orc->bp_offset);
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/* populate reloc for ip */
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if (!elf_init_reloc_text_sym(elf, ip_sec, idx * sizeof(int), idx,
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insn_sec, insn_off))
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return -1;
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return 0;
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}
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struct orc_list_entry {
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struct list_head list;
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struct orc_entry orc;
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