[PATCH] [aarch64] sme: Core file support
Luis Machado
luis.machado@arm.com
Fri Jun 30 13:44:36 GMT 2023
From: Ezra Sitorus <ezra.sitorus@arm.com>
Add required code to support core file dumps with NT_ARM_ZA and NT_ARM_SSVE
register sets in them.
These new register sets are dumped when SME is supported.
---
bfd/elf-bfd.h | 4 ++++
bfd/elf.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 62 insertions(+)
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index ec856764519..2a9eed7f9ee 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -2939,6 +2939,10 @@ extern char *elfcore_write_aarch_pauth
(bfd *, char *, int *, const void *, int);
extern char *elfcore_write_aarch_mte
(bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_aarch_ssve
+ (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_aarch_za
+ (bfd *, char *, int *, const void *, int);
extern char *elfcore_write_arc_v2
(bfd *, char *, int *, const void *, int);
extern char *elfcore_write_riscv_csr
diff --git a/bfd/elf.c b/bfd/elf.c
index d38e0afff2e..2a097b02977 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -10680,6 +10680,18 @@ elfcore_grok_aarch_mte (bfd *abfd, Elf_Internal_Note *note)
note);
}
+static bool
+elfcore_grok_aarch_ssve (bfd *abfd, Elf_Internal_Note *note)
+{
+ return elfcore_make_note_pseudosection (abfd, ".reg-aarch-ssve", note);
+}
+
+static bool
+elfcore_grok_aarch_za (bfd *abfd, Elf_Internal_Note *note)
+{
+ return elfcore_make_note_pseudosection (abfd, ".reg-aarch-za", note);
+}
+
static bool
elfcore_grok_arc_v2 (bfd *abfd, Elf_Internal_Note *note)
{
@@ -11395,6 +11407,20 @@ elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
else
return true;
+ case NT_ARM_SSVE:
+ if (note->namesz == 6
+ && strcmp (note->namedata, "LINUX") == 0)
+ return elfcore_grok_aarch_ssve (abfd, note);
+ else
+ return true;
+
+ case NT_ARM_ZA:
+ if (note->namesz == 6
+ && strcmp (note->namedata, "LINUX") == 0)
+ return elfcore_grok_aarch_za (abfd, note);
+ else
+ return true;
+
case NT_GDB_TDESC:
if (note->namesz == 4
&& strcmp (note->namedata, "GDB") == 0)
@@ -13009,6 +13035,34 @@ elfcore_write_aarch_mte (bfd *abfd,
size);
}
+char *
+elfcore_write_aarch_ssve (bfd *abfd,
+ char *buf,
+ int *bufsiz,
+ const void *aarch_ssve,
+ int size)
+{
+ char *note_name = "LINUX";
+ return elfcore_write_note (abfd, buf, bufsiz,
+ note_name, NT_ARM_SSVE,
+ aarch_ssve,
+ size);
+}
+
+char *
+elfcore_write_aarch_za (bfd *abfd,
+ char *buf,
+ int *bufsiz,
+ const void *aarch_za,
+ int size)
+{
+ char *note_name = "LINUX";
+ return elfcore_write_note (abfd, buf, bufsiz,
+ note_name, NT_ARM_ZA,
+ aarch_za,
+ size);
+}
+
char *
elfcore_write_arc_v2 (bfd *abfd,
char *buf,
@@ -13190,6 +13244,10 @@ elfcore_write_register_note (bfd *abfd,
return elfcore_write_aarch_pauth (abfd, buf, bufsiz, data, size);
if (strcmp (section, ".reg-aarch-mte") == 0)
return elfcore_write_aarch_mte (abfd, buf, bufsiz, data, size);
+ if (strcmp (section, ".reg-aarch-ssve") == 0)
+ return elfcore_write_aarch_ssve (abfd, buf, bufsiz, data, size);
+ if (strcmp (section, ".reg-aarch-za") == 0)
+ return elfcore_write_aarch_za (abfd, buf, bufsiz, data, size);
if (strcmp (section, ".reg-arc-v2") == 0)
return elfcore_write_arc_v2 (abfd, buf, bufsiz, data, size);
if (strcmp (section, ".gdb-tdesc") == 0)
--
2.25.1
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