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Update bsd notes

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freebsd 13 must not have note section.
freebsd 14 must have note section.

also added version info.
This commit is contained in:
herman ten brugge
2025-09-03 07:09:42 +02:00
parent b427545419
commit b45cea5f4b
1 changed files with 55 additions and 15 deletions
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70
tccelf.c
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@@ -2803,23 +2803,62 @@ static void create_arm_attribute_section(TCCState *s1)
}
#endif
#if TARGETOS_OpenBSD || TARGETOS_NetBSD
#if TARGETOS_OpenBSD || TARGETOS_NetBSD || TARGETOS_FreeBSD
#include <sys/utsname.h>
static void fill_bsd_note(Section *s, int type,
const char *value, uint32_t data)
{
unsigned long offset = 0;
char *ptr;
ElfW(Nhdr) *note;
int align = s->sh_addralign;
/* check if type present */
while (offset + sizeof(ElfW(Nhdr)) < s->data_offset) {
note = (ElfW(Nhdr) *) (s->data + offset);
if (note->n_type == type)
return;
offset += (sizeof(ElfW(Nhdr)) + note->n_namesz + note->n_descsz +
align - 1) & -align;
}
ptr = section_ptr_add(s, sizeof(ElfW(Nhdr)) + 8 + 4);
note = (ElfW(Nhdr) *) ptr;
note->n_namesz = 8;
note->n_descsz = 4;
note->n_type = type;
strcpy (ptr + sizeof(ElfW(Nhdr)), value);
memcpy (ptr + sizeof(ElfW(Nhdr)) + 8, &data, 4);
}
static Section *create_bsd_note_section(TCCState *s1,
const char *name,
const char *value)
{
Section *s = find_section (s1, name);
Section *s;
unsigned int major = 0, minor = 0, patch = 0;
struct utsname uts;
if (s->data_offset == 0) {
char *ptr = section_ptr_add(s, sizeof(ElfW(Nhdr)) + 8 + 4);
ElfW(Nhdr) *note = (ElfW(Nhdr) *) ptr;
s->sh_type = SHT_NOTE;
note->n_namesz = 8;
note->n_descsz = 4;
note->n_type = ELF_NOTE_OS_GNU;
strcpy (ptr + sizeof(ElfW(Nhdr)), value);
}
if (!uname(&uts))
sscanf(uts.release, "%u.%u.%u", &major, &minor, &patch);
#if TARGETOS_FreeBSD
if (major < 14)
return NULL;
#endif
s = find_section (s1, name);
s->sh_type = SHT_NOTE;
#if TARGETOS_OpenBSD
fill_bsd_note(s, ELF_NOTE_OS_GNU, value, 0);
#elif TARGETOS_NetBSD
fill_bsd_note(s, 1 /* NT_NETBSD_IDENT_TAG */, value,
major * 100000000u + (minor % 100u) * 1000000u +
(patch % 10000u) * 100u);
#elif TARGETOS_FreeBSD
fill_bsd_note(s, 1 /* NT_FREEBSD_ABI_TAG */, value,
major * 100000u + (minor % 100u) * 1000u);
fill_bsd_note(s, 4 /* NT_FREEBSD_FEATURE_CTL */, value, 0);
fill_bsd_note(s, 2 /* NT_FREEBSD_NOINIT_TAG */, value, 0);
#endif
return s;
}
#endif
@@ -2853,12 +2892,13 @@ static int elf_output_file(TCCState *s1, const char *filename)
dyninf.note = create_bsd_note_section (s1, ".note.netbsd.ident", "NetBSD");
#endif
#if TARGETOS_FreeBSD
dyninf.note = create_bsd_note_section (s1, ".note.tag", "FreeBSD");
#endif
#if TARGETOS_FreeBSD || TARGETOS_NetBSD
dyninf.roinf = NULL;
#endif
#if TARGETOS_FreeBSD
dyninf.note = find_section (s1, ".note.tag");
#endif
/* if linking, also link in runtime libraries (libc, libgcc, etc.) */
tcc_add_runtime(s1);