missing files
This commit is contained in:
phcoder
parent
444eea11fc
commit
ab6e34cc81
3 changed files with 270 additions and 0 deletions
18
loader/macho32.c
Normal file
18
loader/macho32.c
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
#include <grub/cpu/macho.h>
|
||||
#include <grub/machoload.h>
|
||||
|
||||
#define SUFFIX(x) x ## 32
|
||||
typedef struct grub_macho_header32 grub_macho_header_t;
|
||||
typedef struct grub_macho_segment32 grub_macho_segment_t;
|
||||
typedef grub_uint32_t grub_macho_addr_t;
|
||||
typedef struct grub_macho_thread32 grub_macho_thread_t;
|
||||
#define offsetXX offset32
|
||||
#define ncmdsXX ncmds32
|
||||
#define cmdsizeXX cmdsize32
|
||||
#define cmdsXX cmds32
|
||||
#define endXX end32
|
||||
#define XX "32"
|
||||
#define GRUB_MACHO_MAGIC GRUB_MACHO_MAGIC32
|
||||
#define GRUB_MACHO_CMD_SEGMENT GRUB_MACHO_CMD_SEGMENT32
|
||||
#include "machoXX.c"
|
||||
|
||||
18
loader/macho64.c
Normal file
18
loader/macho64.c
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
#include <grub/cpu/macho.h>
|
||||
#include <grub/machoload.h>
|
||||
|
||||
#define SUFFIX(x) x ## 64
|
||||
typedef struct grub_macho_header64 grub_macho_header_t;
|
||||
typedef struct grub_macho_segment64 grub_macho_segment_t;
|
||||
typedef grub_uint64_t grub_macho_addr_t;
|
||||
typedef struct grub_macho_thread64 grub_macho_thread_t;
|
||||
#define offsetXX offset64
|
||||
#define ncmdsXX ncmds64
|
||||
#define cmdsizeXX cmdsize64
|
||||
#define cmdsXX cmds64
|
||||
#define endXX end64
|
||||
#define XX "64"
|
||||
#define GRUB_MACHO_MAGIC GRUB_MACHO_MAGIC64
|
||||
#define GRUB_MACHO_CMD_SEGMENT GRUB_MACHO_CMD_SEGMENT64
|
||||
#include "machoXX.c"
|
||||
|
||||
234
loader/machoXX.c
Normal file
234
loader/machoXX.c
Normal file
|
|
@ -0,0 +1,234 @@
|
|||
|
||||
#include <grub/file.h>
|
||||
#include <grub/mm.h>
|
||||
#include <grub/misc.h>
|
||||
|
||||
#define min(a,b) (((a) < (b)) ? (a) : (b))
|
||||
|
||||
int
|
||||
SUFFIX (grub_macho_contains_macho) (grub_macho_t macho)
|
||||
{
|
||||
return macho->offsetXX != -1;
|
||||
}
|
||||
|
||||
void
|
||||
SUFFIX (grub_macho_parse) (grub_macho_t macho)
|
||||
{
|
||||
grub_macho_header_t head;
|
||||
|
||||
/* Is there any candidate at all? */
|
||||
if (macho->offsetXX == -1)
|
||||
return;
|
||||
|
||||
/* Read header and check magic*/
|
||||
if (grub_file_seek (macho->file, macho->offsetXX) == (grub_off_t) -1
|
||||
|| grub_file_read (macho->file, &head, sizeof (head))
|
||||
!= sizeof(head))
|
||||
{
|
||||
grub_error (GRUB_ERR_READ_ERROR, "Cannot read Mach-O header.");
|
||||
macho->offsetXX = -1;
|
||||
return;
|
||||
}
|
||||
if (head.magic != GRUB_MACHO_MAGIC)
|
||||
{
|
||||
grub_error (GRUB_ERR_BAD_OS, "Invalid Mach-O 32-bit header.");
|
||||
macho->offsetXX = -1;
|
||||
return;
|
||||
}
|
||||
|
||||
/* Read commands. */
|
||||
macho->ncmdsXX = head.ncmds;
|
||||
macho->cmdsizeXX = head.sizeofcmds;
|
||||
macho->cmdsXX = grub_malloc(macho->cmdsizeXX);
|
||||
if (! macho->cmdsXX)
|
||||
{
|
||||
grub_error (GRUB_ERR_OUT_OF_MEMORY, "not enough memory to read commands");
|
||||
return;
|
||||
}
|
||||
if (grub_file_read (macho->file, macho->cmdsXX,
|
||||
(grub_size_t) macho->cmdsizeXX)
|
||||
!= (grub_ssize_t) macho->cmdsizeXX)
|
||||
{
|
||||
grub_error (GRUB_ERR_READ_ERROR, "Cannot read Mach-O header.");
|
||||
macho->offsetXX = -1;
|
||||
}
|
||||
}
|
||||
|
||||
typedef int NESTED_FUNC_ATTR (*grub_macho_iter_hook_t)
|
||||
(grub_macho_t , struct grub_macho_cmd *,
|
||||
void *);
|
||||
|
||||
static grub_err_t
|
||||
grub_macho_cmds_iterate (grub_macho_t macho,
|
||||
grub_macho_iter_hook_t hook,
|
||||
void *hook_arg)
|
||||
{
|
||||
grub_uint8_t *hdrs = macho->cmdsXX;
|
||||
int i;
|
||||
if (! macho->cmdsXX)
|
||||
return grub_error (GRUB_ERR_BAD_OS, "Couldn't find " XX "-bit Mach-O");
|
||||
for (i = 0; i < macho->ncmdsXX; i++)
|
||||
{
|
||||
struct grub_macho_cmd *hdr = (struct grub_macho_cmd *) hdrs;
|
||||
if (hook (macho, hdr, hook_arg))
|
||||
break;
|
||||
hdrs += hdr->cmdsize;
|
||||
}
|
||||
|
||||
return grub_errno;
|
||||
}
|
||||
|
||||
grub_size_t
|
||||
SUFFIX (grub_macho_filesize) (grub_macho_t macho)
|
||||
{
|
||||
if (SUFFIX (grub_macho_contains_macho) (macho))
|
||||
return macho->endXX - macho->offsetXX;
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_err_t
|
||||
SUFFIX (grub_macho_readfile) (grub_macho_t macho, void *dest)
|
||||
{
|
||||
grub_ssize_t read;
|
||||
if (! SUFFIX (grub_macho_contains_macho) (macho))
|
||||
return grub_error (GRUB_ERR_BAD_OS,
|
||||
"Couldn't read architecture-specific part");
|
||||
|
||||
if (grub_file_seek (macho->file, macho->offset32) == (grub_off_t) -1)
|
||||
{
|
||||
grub_error_push ();
|
||||
return grub_error (GRUB_ERR_BAD_OS,
|
||||
"Invalid offset in program header.");
|
||||
}
|
||||
|
||||
read = grub_file_read (macho->file, dest,
|
||||
macho->end32 - macho->offset32);
|
||||
if (read != (grub_ssize_t) (macho->end32 - macho->offset32))
|
||||
{
|
||||
grub_error_push ();
|
||||
return grub_error (GRUB_ERR_BAD_OS,
|
||||
"Couldn't read architecture-specific part");
|
||||
}
|
||||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
/* Calculate the amount of memory spanned by the segments. */
|
||||
grub_err_t
|
||||
SUFFIX (grub_macho_size) (grub_macho_t macho, grub_macho_addr_t *segments_start,
|
||||
grub_macho_addr_t *segments_end, int flags)
|
||||
{
|
||||
int nr_phdrs = 0;
|
||||
|
||||
/* Run through the program headers to calculate the total memory size we
|
||||
should claim. */
|
||||
auto int NESTED_FUNC_ATTR calcsize (grub_macho_t _macho,
|
||||
struct grub_macho_cmd *phdr, void *_arg);
|
||||
int NESTED_FUNC_ATTR calcsize (grub_macho_t UNUSED _macho,
|
||||
struct grub_macho_cmd *hdr0, void UNUSED *_arg)
|
||||
{
|
||||
grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
|
||||
if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
|
||||
return 0;
|
||||
if (! hdr->filesize && (flags & GRUB_MACHO_NOBSS))
|
||||
return 0;
|
||||
|
||||
nr_phdrs++;
|
||||
if (hdr->vmaddr < *segments_start)
|
||||
*segments_start = hdr->vmaddr;
|
||||
if (hdr->vmaddr + hdr->vmsize > *segments_end)
|
||||
*segments_end = hdr->vmaddr + hdr->vmsize;
|
||||
return 0;
|
||||
}
|
||||
|
||||
*segments_start = (grub_macho_addr_t) -1;
|
||||
*segments_end = 0;
|
||||
|
||||
grub_macho_cmds_iterate (macho, calcsize, 0);
|
||||
|
||||
if (nr_phdrs == 0)
|
||||
return grub_error (GRUB_ERR_BAD_OS, "No program headers present");
|
||||
|
||||
if (*segments_end < *segments_start)
|
||||
/* Very bad addresses. */
|
||||
return grub_error (GRUB_ERR_BAD_OS, "Bad program header load addresses");
|
||||
|
||||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
/* Load every loadable segment into memory specified by `_load_hook'. */
|
||||
grub_err_t
|
||||
SUFFIX (grub_macho_load) (grub_macho_t macho, char *offset, int flags)
|
||||
{
|
||||
grub_err_t err = 0;
|
||||
auto int NESTED_FUNC_ATTR do_load(grub_macho_t _macho,
|
||||
struct grub_macho_cmd *hdr0,
|
||||
void UNUSED *_arg);
|
||||
int NESTED_FUNC_ATTR do_load(grub_macho_t _macho,
|
||||
struct grub_macho_cmd *hdr0,
|
||||
void UNUSED *_arg)
|
||||
{
|
||||
grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
|
||||
|
||||
if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
|
||||
return 0;
|
||||
|
||||
if (! hdr->filesize && (flags & GRUB_MACHO_NOBSS))
|
||||
return 0;
|
||||
if (! hdr->vmsize)
|
||||
return 0;
|
||||
|
||||
if (grub_file_seek (_macho->file, hdr->fileoff
|
||||
+ _macho->offsetXX) == (grub_off_t) -1)
|
||||
{
|
||||
grub_error_push ();
|
||||
grub_error (GRUB_ERR_BAD_OS,
|
||||
"Invalid offset in program header.");
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (hdr->filesize)
|
||||
{
|
||||
grub_ssize_t read;
|
||||
read = grub_file_read (_macho->file, offset + hdr->vmaddr,
|
||||
min (hdr->filesize, hdr->vmsize));
|
||||
if (read != (grub_ssize_t) min (hdr->filesize, hdr->vmsize))
|
||||
{
|
||||
/* XXX How can we free memory from `load_hook'? */
|
||||
grub_error_push ();
|
||||
err=grub_error (GRUB_ERR_BAD_OS,
|
||||
"Couldn't read segment from file: "
|
||||
"wanted 0x%lx bytes; read 0x%lx bytes.",
|
||||
hdr->filesize, read);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (hdr->filesize < hdr->vmsize)
|
||||
grub_memset (offset + hdr->vmaddr + hdr->filesize,
|
||||
0, hdr->vmsize - hdr->filesize);
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_macho_cmds_iterate (macho, do_load, 0);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
grub_macho_addr_t
|
||||
SUFFIX (grub_macho_get_entry_point) (grub_macho_t macho)
|
||||
{
|
||||
grub_macho_addr_t entry_point = 0;
|
||||
auto int NESTED_FUNC_ATTR hook(grub_macho_t _macho,
|
||||
struct grub_macho_cmd *hdr,
|
||||
void UNUSED *_arg);
|
||||
int NESTED_FUNC_ATTR hook(grub_macho_t UNUSED _macho,
|
||||
struct grub_macho_cmd *hdr,
|
||||
void UNUSED *_arg)
|
||||
{
|
||||
if (hdr->cmd == GRUB_MACHO_CMD_THREAD)
|
||||
entry_point = ((grub_macho_thread_t *) hdr)->entry_point;
|
||||
return 0;
|
||||
}
|
||||
grub_macho_cmds_iterate (macho, hook, 0);
|
||||
return entry_point;
|
||||
}
|
||||
Loading…
Reference in a new issue