[PATCH v3 04/20] perf disasm: Add e_machine/e_flags to struct arch

Ian Rogers
2024-10-17T00:56:23Z

Currently functions like get_dwarf_regnum only work with the host
architecture. Carry the elf machine and flags in struct arch so that
in disassembly these can be used to allow cross platform disassembly.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/arch/arc/annotate/instructions.c | 2 ++
tools/perf/arch/arm/annotate/instructions.c | 2 ++
tools/perf/arch/arm64/annotate/instructions.c | 2 ++
tools/perf/arch/csky/annotate/instructions.c | 7 ++++++-
tools/perf/arch/loongarch/annotate/instructions.c | 2 ++
tools/perf/arch/mips/annotate/instructions.c | 2 ++
tools/perf/arch/powerpc/annotate/instructions.c | 2 ++
tools/perf/arch/riscv64/annotate/instructions.c | 2 ++
tools/perf/arch/s390/annotate/instructions.c | 2 ++
tools/perf/arch/sparc/annotate/instructions.c | 2 ++
tools/perf/arch/x86/annotate/instructions.c | 3 ++-
tools/perf/util/disasm.h | 4 ++++
12 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/tools/perf/arch/arc/annotate/instructions.c b/tools/perf/arch/arc/annotate/instructions.c
index 2f00e995c7e3..e5619770a1af 100644
--- a/tools/perf/arch/arc/annotate/instructions.c
+++ b/tools/perf/arch/arc/annotate/instructions.c
@@ -5,5 +5,7 @@ static int arc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
{
arch->initialized = true;
arch->objdump.comment_char = ';';
+ arch->e_machine = EM_ARC;
+ arch->e_flags = 0;
return 0;
}
diff --git a/tools/perf/arch/arm/annotate/instructions.c b/tools/perf/arch/arm/annotate/instructions.c
index 2ff6cedeb9c5..cf91a43362b0 100644
--- a/tools/perf/arch/arm/annotate/instructions.c
+++ b/tools/perf/arch/arm/annotate/instructions.c
@@ -53,6 +53,8 @@ static int arm__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
arch->associate_instruction_ops = arm__associate_instruction_ops;
arch->objdump.comment_char = ';';
arch->objdump.skip_functions_char = '+';
+ arch->e_machine = EM_ARM;
+ arch->e_flags = 0;
return 0;

out_free_call:
diff --git a/tools/perf/arch/arm64/annotate/instructions.c b/tools/perf/arch/arm64/annotate/instructions.c
index f86d9f4798bd..d465d093e7eb 100644
--- a/tools/perf/arch/arm64/annotate/instructions.c
+++ b/tools/perf/arch/arm64/annotate/instructions.c
@@ -113,6 +113,8 @@ static int arm64__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
arch->associate_instruction_ops = arm64__associate_instruction_ops;
arch->objdump.comment_char = '/';
arch->objdump.skip_functions_char = '+';
+ arch->e_machine = EM_AARCH64;
+ arch->e_flags = 0;
return 0;

out_free_call:
diff --git a/tools/perf/arch/csky/annotate/instructions.c b/tools/perf/arch/csky/annotate/instructions.c
index 5337bfb7d5fc..14270311d215 100644
--- a/tools/perf/arch/csky/annotate/instructions.c
+++ b/tools/perf/arch/csky/annotate/instructions.c
@@ -43,6 +43,11 @@ static int csky__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
arch->initialized = true;
arch->objdump.comment_char = '/';
arch->associate_instruction_ops = csky__associate_ins_ops;
-
+ arch->e_machine = EM_CSKY;
+#if defined(__CSKYABIV2__)
+ arch->e_flags = EF_CSKY_ABIV2;
+#else
+ arch->e_flags = EF_CSKY_ABIV1;
+#endif
return 0;
}
diff --git a/tools/perf/arch/loongarch/annotate/instructions.c b/tools/perf/arch/loongarch/annotate/instructions.c
index ab43b1ab51e3..70262d5f1444 100644
--- a/tools/perf/arch/loongarch/annotate/instructions.c
+++ b/tools/perf/arch/loongarch/annotate/instructions.c
@@ -131,6 +131,8 @@ int loongarch__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
arch->associate_instruction_ops = loongarch__associate_ins_ops;
arch->initialized = true;
arch->objdump.comment_char = '#';
+ arch->e_machine = EM_LOONGARCH;
+ arch->e_flags = 0;
}

return 0;
diff --git a/tools/perf/arch/mips/annotate/instructions.c b/tools/perf/arch/mips/annotate/instructions.c
index 340993f2a897..b50b46c613d6 100644
--- a/tools/perf/arch/mips/annotate/instructions.c
+++ b/tools/perf/arch/mips/annotate/instructions.c
@@ -40,6 +40,8 @@ int mips__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
arch->associate_instruction_ops = mips__associate_ins_ops;
arch->initialized = true;
arch->objdump.comment_char = '#';
+ arch->e_machine = EM_MIPS;
+ arch->e_flags = 0;
}

return 0;
diff --git a/tools/perf/arch/powerpc/annotate/instructions.c b/tools/perf/arch/powerpc/annotate/instructions.c
index 54478cf5cccc..ca567cfdcbdb 100644
--- a/tools/perf/arch/powerpc/annotate/instructions.c
+++ b/tools/perf/arch/powerpc/annotate/instructions.c
@@ -309,6 +309,8 @@ static int powerpc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
arch->associate_instruction_ops = powerpc__associate_instruction_ops;
arch->objdump.comment_char = '#';
annotate_opts.show_asm_raw = true;
+ arch->e_machine = EM_PPC;
+ arch->e_flags = 0;
}

return 0;
diff --git a/tools/perf/arch/riscv64/annotate/instructions.c b/tools/perf/arch/riscv64/annotate/instructions.c
index 869a0eb28953..55cf911633f8 100644
--- a/tools/perf/arch/riscv64/annotate/instructions.c
+++ b/tools/perf/arch/riscv64/annotate/instructions.c
@@ -28,6 +28,8 @@ int riscv64__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
arch->associate_instruction_ops = riscv64__associate_ins_ops;
arch->initialized = true;
arch->objdump.comment_char = '#';
+ arch->e_machine = EM_RISCV;
+ arch->e_flags = 0;
}

return 0;
diff --git a/tools/perf/arch/s390/annotate/instructions.c b/tools/perf/arch/s390/annotate/instructions.c
index eeac25cca699..c61193f1e096 100644
--- a/tools/perf/arch/s390/annotate/instructions.c
+++ b/tools/perf/arch/s390/annotate/instructions.c
@@ -166,6 +166,8 @@ static int s390__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
if (s390__cpuid_parse(arch, cpuid))
err = SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING;
}
+ arch->e_machine = EM_S390;
+ arch->e_flags = 0;
}

return err;
diff --git a/tools/perf/arch/sparc/annotate/instructions.c b/tools/perf/arch/sparc/annotate/instructions.c
index 2614c010c235..68c31580ccfc 100644
--- a/tools/perf/arch/sparc/annotate/instructions.c
+++ b/tools/perf/arch/sparc/annotate/instructions.c
@@ -163,6 +163,8 @@ static int sparc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
arch->initialized = true;
arch->associate_instruction_ops = sparc__associate_instruction_ops;
arch->objdump.comment_char = '#';
+ arch->e_machine = EM_SPARC;
+ arch->e_flags = 0;
}

return 0;
diff --git a/tools/perf/arch/x86/annotate/instructions.c b/tools/perf/arch/x86/annotate/instructions.c
index c869abe3c31d..ae94b1f0b9cc 100644
--- a/tools/perf/arch/x86/annotate/instructions.c
+++ b/tools/perf/arch/x86/annotate/instructions.c
@@ -202,7 +202,8 @@ static int x86__annotate_init(struct arch *arch, char *cpuid)
if (x86__cpuid_parse(arch, cpuid))
err = SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING;
}
-
+ arch->e_machine = EM_X86_64;
+ arch->e_flags = 0;
arch->initialized = true;
return err;
}
diff --git a/tools/perf/util/disasm.h b/tools/perf/util/disasm.h
index 486c269b29ba..c135db2416b5 100644
--- a/tools/perf/util/disasm.h
+++ b/tools/perf/util/disasm.h
@@ -44,6 +44,10 @@ struct arch {
struct data_loc_info *dloc, Dwarf_Die *cu_die,
struct disasm_line *dl);
#endif
+ /** @e_machine: ELF machine associated with arch. */
+ unsigned int e_machine;
+ /** @e_flags: Optional ELF flags associated with arch. */
+ unsigned int e_flags;
};

struct ins {