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| author | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2021-06-29 07:49:04 +0000 |
|---|---|---|
| committer | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2021-06-29 07:49:12 +0000 |
| commit | 435754a59ee203c3369f47ff9103f269c81581b7 (patch) | |
| tree | 30f750128028c70ad9024b6f3362f7b38828fd83 /sys/sys | |
| parent | d26ef5c7ac830812f07a02787f25fed5d6f8609e (diff) | |
| download | src-435754a59ee203c3369f47ff9103f269c81581b7.tar.gz src-435754a59ee203c3369f47ff9103f269c81581b7.zip | |
Add infrastructure required for Linux coredump support
This adds `sv_elf_core_osabi`, `sv_elf_core_abi_vendor`,
and `sv_elf_core_prepare_notes` fields to `struct sysentvec`,
and modifies imgact_elf.c to make use of them instead
of hardcoding FreeBSD-specific values. It also updates all
of the ABI definitions to preserve current behaviour.
This makes it possible to implement non-native ELF coredump
support without unnecessary code duplication. It will be used
for Linux coredumps.
Reviewed By: kib
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30921
Diffstat (limited to 'sys/sys')
| -rw-r--r-- | sys/sys/imgact_elf.h | 11 | ||||
| -rw-r--r-- | sys/sys/sysent.h | 5 |
2 files changed, 15 insertions, 1 deletions
diff --git a/sys/sys/imgact_elf.h b/sys/sys/imgact_elf.h index f0c112b2bcdc..44a860359a75 100644 --- a/sys/sys/imgact_elf.h +++ b/sys/sys/imgact_elf.h @@ -50,6 +50,8 @@ struct image_params; struct thread; struct vnode; +struct note_info_list; +struct sbuf; /* * Structure used to pass information from the loader to the @@ -98,7 +100,10 @@ typedef struct { __ElfType(Auxargs); __ElfType(Brandinfo); -#define MAX_BRANDS 8 +#define MAX_BRANDS 8 +#define FREEBSD_ABI_VENDOR "FreeBSD" + +typedef void (*outfunc_t)(void *, struct sbuf *, size_t *); /* Closure for __elfN(size_segments)(). */ struct sseg_closure { @@ -115,7 +120,11 @@ size_t __elfN(populate_note)(int, void *, void *, size_t, void **); void __elfN(stackgap)(struct image_params *, uintptr_t *); int __elfN(freebsd_copyout_auxargs)(struct image_params *, uintptr_t); void __elfN(puthdr)(struct thread *, void *, size_t, int, size_t, int); +void __elfN(prepare_notes)(struct thread *, struct note_info_list *, + size_t *); void __elfN(size_segments)(struct thread *, struct sseg_closure *, int); +size_t __elfN(register_note)(struct thread *, struct note_info_list *, + int, outfunc_t, void *); /* Machine specific function to dump per-thread information. */ void __elfN(dump_thread)(struct thread *, void *, size_t *); diff --git a/sys/sys/sysent.h b/sys/sys/sysent.h index 8b0903f7dcc0..e0e5e351ae20 100644 --- a/sys/sys/sysent.h +++ b/sys/sys/sysent.h @@ -98,6 +98,7 @@ struct proc; struct __sigset; struct trapframe; struct vnode; +struct note_info_list; struct sysentvec { int sv_size; /* number of entries */ @@ -113,6 +114,10 @@ struct sysentvec { char *sv_name; /* name of binary type */ int (*sv_coredump)(struct thread *, struct vnode *, off_t, int); /* function to dump core, or NULL */ + int sv_elf_core_osabi; + const char *sv_elf_core_abi_vendor; + void (*sv_elf_core_prepare_notes)(struct thread *, + struct note_info_list *, size_t *); int (*sv_imgact_try)(struct image_params *); void (*sv_stackgap)(struct image_params *, uintptr_t *); int (*sv_copyout_auxargs)(struct image_params *, |