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charset="utf-8" When tracing function validation, instruction state changes can report changes involving registers. These registers are reported with the name "r" (e.g. "r3"). Print the CPU specific register name instead of a generic name (e.g. print "rbx" instead of "r3" on x86). Signed-off-by: Alexandre Chartre --- tools/objtool/arch/loongarch/decode.c | 11 +++++++++++ tools/objtool/arch/powerpc/decode.c | 12 ++++++++++++ tools/objtool/arch/x86/decode.c | 8 ++++++++ tools/objtool/include/objtool/arch.h | 2 ++ tools/objtool/trace.c | 7 +++++++ 5 files changed, 40 insertions(+) diff --git a/tools/objtool/arch/loongarch/decode.c b/tools/objtool/arch/loo= ngarch/decode.c index 1de86ebb637d5..6cd288150f495 100644 --- a/tools/objtool/arch/loongarch/decode.c +++ b/tools/objtool/arch/loongarch/decode.c @@ -8,6 +8,17 @@ #include #include =20 +const char *arch_reg_name[CFI_NUM_REGS] =3D { + "zero", "ra", "tp", "sp", + "a0", "a1", "a2", "a3", + "a4", "a5", "a6", "a7", + "t0", "t1", "t2", "t3", + "t4", "t5", "t6", "t7", + "t8", "u0", "fp", "s0", + "s1", "s2", "s3", "s4", + "s5", "s6", "s7", "s8" +}; + int arch_ftrace_match(const char *name) { return !strcmp(name, "_mcount"); diff --git a/tools/objtool/arch/powerpc/decode.c b/tools/objtool/arch/power= pc/decode.c index 4f68b402e7855..e534ac1123b33 100644 --- a/tools/objtool/arch/powerpc/decode.c +++ b/tools/objtool/arch/powerpc/decode.c @@ -9,6 +9,18 @@ #include #include =20 +const char *arch_reg_name[CFI_NUM_REGS] =3D { + "r0", "sp", "r2", "r3", + "r4", "r5", "r6", "r7", + "r8", "r9", "r10", "r11", + "r12", "r13", "r14", "r15", + "r16", "r17", "r18", "r19", + "r20", "r21", "r22", "r23", + "r24", "r25", "r26", "r27", + "r28", "r29", "r30", "r31", + "ra" +}; + int arch_ftrace_match(const char *name) { return !strcmp(name, "_mcount"); diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decod= e.c index 83e9c604ce105..f4af825082284 100644 --- a/tools/objtool/arch/x86/decode.c +++ b/tools/objtool/arch/x86/decode.c @@ -23,6 +23,14 @@ #include #include =20 +const char *arch_reg_name[CFI_NUM_REGS] =3D { + "rax", "rcx", "rdx", "rbx", + "rsp", "rbp", "rsi", "rdi", + "r8", "r9", "r10", "r11", + "r12", "r13", "r14", "r15", + "ra" +}; + int arch_ftrace_match(const char *name) { return !strcmp(name, "__fentry__"); diff --git a/tools/objtool/include/objtool/arch.h b/tools/objtool/include/o= bjtool/arch.h index 18c0e69ee6170..8866158975fcb 100644 --- a/tools/objtool/include/objtool/arch.h +++ b/tools/objtool/include/objtool/arch.h @@ -103,6 +103,8 @@ bool arch_absolute_reloc(struct elf *elf, struct reloc = *reloc); unsigned int arch_reloc_size(struct reloc *reloc); unsigned long arch_jump_table_sym_offset(struct reloc *reloc, struct reloc= *table); =20 +extern const char *arch_reg_name[CFI_NUM_REGS]; + #ifdef DISAS =20 #include diff --git a/tools/objtool/trace.c b/tools/objtool/trace.c index 12bbad09d9c02..d70d47081e82d 100644 --- a/tools/objtool/trace.c +++ b/tools/objtool/trace.c @@ -34,6 +34,7 @@ int trace_depth; static const char *cfi_reg_name(unsigned int reg) { static char rname_buffer[CFI_REG_NAME_MAXLEN]; + const char *rname; =20 switch (reg) { case CFI_UNDEFINED: @@ -46,6 +47,12 @@ static const char *cfi_reg_name(unsigned int reg) return "(bp)"; } =20 + if (reg < CFI_NUM_REGS) { + rname =3D arch_reg_name[reg]; + if (rname) + return rname; + } + if (snprintf(rname_buffer, CFI_REG_NAME_MAXLEN, "r%d", reg) =3D=3D -1) return ""; =20 --=20 2.43.5