* grub-core/loader/machoXX.c: Remove nested functions.
This commit is contained in:
Vladimir 'phcoder' Serbinenko
parent
4eb8b75659
commit
43c918828d
|
|
@ -1,3 +1,7 @@
|
|||
2013-02-27 Vladimir Serbinenko <phcoder@gmail.com>
|
||||
|
||||
* grub-core/loader/machoXX.c: Remove nested functions.
|
||||
|
||||
2013-02-27 Colin Watson <cjwatson@ubuntu.com>
|
||||
|
||||
Remove nested functions from disk and file read hooks.
|
||||
|
|
|
|||
|
|
@ -79,7 +79,7 @@ SUFFIX (grub_macho_parse) (grub_macho_t macho, const char *filename)
|
|||
}
|
||||
}
|
||||
|
||||
typedef int NESTED_FUNC_ATTR (*grub_macho_iter_hook_t)
|
||||
typedef int (*grub_macho_iter_hook_t)
|
||||
(grub_macho_t , struct grub_macho_cmd *,
|
||||
void *);
|
||||
|
||||
|
|
@ -200,46 +200,59 @@ SUFFIX (grub_macho_readfile) (grub_macho_t macho,
|
|||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
struct calcsize_ctx
|
||||
{
|
||||
int flags;
|
||||
int nr_phdrs;
|
||||
grub_macho_addr_t *segments_start;
|
||||
grub_macho_addr_t *segments_end;
|
||||
};
|
||||
|
||||
/* Run through the program headers to calculate the total memory size we
|
||||
should claim. */
|
||||
static int
|
||||
calcsize (grub_macho_t _macho __attribute__ ((unused)),
|
||||
struct grub_macho_cmd *hdr0,
|
||||
void *_arg)
|
||||
{
|
||||
grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
|
||||
struct calcsize_ctx *ctx = _arg;
|
||||
if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
|
||||
return 0;
|
||||
|
||||
if (! hdr->vmsize)
|
||||
return 0;
|
||||
|
||||
if (! hdr->filesize && (ctx->flags & GRUB_MACHO_NOBSS))
|
||||
return 0;
|
||||
|
||||
ctx->nr_phdrs++;
|
||||
if (hdr->vmaddr < *ctx->segments_start)
|
||||
*ctx->segments_start = hdr->vmaddr;
|
||||
if (hdr->vmaddr + hdr->vmsize > *ctx->segments_end)
|
||||
*ctx->segments_end = hdr->vmaddr + hdr->vmsize;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* 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,
|
||||
const char *filename)
|
||||
{
|
||||
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 _macho __attribute__ ((unused)),
|
||||
struct grub_macho_cmd *hdr0,
|
||||
void *_arg __attribute__ ((unused)))
|
||||
{
|
||||
grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
|
||||
if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
|
||||
return 0;
|
||||
|
||||
if (! hdr->vmsize)
|
||||
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;
|
||||
}
|
||||
struct calcsize_ctx ctx = {
|
||||
.flags = flags,
|
||||
.nr_phdrs = 0,
|
||||
.segments_start = segments_start,
|
||||
.segments_end = segments_end,
|
||||
};
|
||||
|
||||
*segments_start = (grub_macho_addr_t) -1;
|
||||
*segments_end = 0;
|
||||
|
||||
grub_macho_cmds_iterate (macho, calcsize, 0, filename);
|
||||
grub_macho_cmds_iterate (macho, calcsize, &ctx, filename);
|
||||
|
||||
if (nr_phdrs == 0)
|
||||
if (ctx.nr_phdrs == 0)
|
||||
return grub_error (GRUB_ERR_BAD_OS, "no program headers present");
|
||||
|
||||
if (*segments_end < *segments_start)
|
||||
|
|
@ -249,109 +262,123 @@ SUFFIX (grub_macho_size) (grub_macho_t macho, grub_macho_addr_t *segments_start,
|
|||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
struct do_load_ctx
|
||||
{
|
||||
int flags;
|
||||
char *offset;
|
||||
const char *filename;
|
||||
int *darwin_version;
|
||||
};
|
||||
|
||||
static int
|
||||
do_load(grub_macho_t _macho,
|
||||
struct grub_macho_cmd *hdr0,
|
||||
void *_arg)
|
||||
{
|
||||
grub_macho_segment_t *hdr = (grub_macho_segment_t *) hdr0;
|
||||
struct do_load_ctx *ctx = _arg;
|
||||
|
||||
if (hdr->cmd != GRUB_MACHO_CMD_SEGMENT)
|
||||
return 0;
|
||||
|
||||
if (! hdr->filesize && (ctx->flags & GRUB_MACHO_NOBSS))
|
||||
return 0;
|
||||
if (! hdr->vmsize)
|
||||
return 0;
|
||||
|
||||
if (hdr->filesize)
|
||||
{
|
||||
grub_ssize_t read, toread = min (hdr->filesize, hdr->vmsize);
|
||||
if (_macho->uncompressedXX)
|
||||
{
|
||||
if (hdr->fileoff + (grub_size_t) toread
|
||||
> _macho->uncompressed_sizeXX)
|
||||
read = -1;
|
||||
else
|
||||
{
|
||||
read = toread;
|
||||
grub_memcpy (ctx->offset + hdr->vmaddr,
|
||||
_macho->uncompressedXX + hdr->fileoff, read);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (grub_file_seek (_macho->file, hdr->fileoff
|
||||
+ _macho->offsetXX) == (grub_off_t) -1)
|
||||
return 1;
|
||||
read = grub_file_read (_macho->file, ctx->offset + hdr->vmaddr,
|
||||
toread);
|
||||
}
|
||||
|
||||
if (read != toread)
|
||||
{
|
||||
/* XXX How can we free memory from `load_hook'? */
|
||||
if (!grub_errno)
|
||||
grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
|
||||
ctx->filename);
|
||||
|
||||
return 1;
|
||||
}
|
||||
if (ctx->darwin_version)
|
||||
{
|
||||
const char *ptr = ctx->offset + hdr->vmaddr;
|
||||
const char *end = ptr + min (hdr->filesize, hdr->vmsize)
|
||||
- (sizeof ("Darwin Kernel Version ") - 1);
|
||||
for (; ptr < end; ptr++)
|
||||
if (grub_memcmp (ptr, "Darwin Kernel Version ",
|
||||
sizeof ("Darwin Kernel Version ") - 1) == 0)
|
||||
{
|
||||
ptr += sizeof ("Darwin Kernel Version ") - 1;
|
||||
*ctx->darwin_version = 0;
|
||||
end += (sizeof ("Darwin Kernel Version ") - 1);
|
||||
while (ptr < end && grub_isdigit (*ptr))
|
||||
*ctx->darwin_version = (*ptr++ - '0') + *ctx->darwin_version * 10;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (hdr->filesize < hdr->vmsize)
|
||||
grub_memset (ctx->offset + hdr->vmaddr + hdr->filesize,
|
||||
0, hdr->vmsize - hdr->filesize);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Load every loadable segment into memory specified by `_load_hook'. */
|
||||
grub_err_t
|
||||
SUFFIX (grub_macho_load) (grub_macho_t macho, const char *filename,
|
||||
char *offset, int flags, int *darwin_version)
|
||||
{
|
||||
auto int NESTED_FUNC_ATTR do_load(grub_macho_t _macho,
|
||||
struct grub_macho_cmd *hdr0,
|
||||
void *_arg __attribute__ ((unused)));
|
||||
int NESTED_FUNC_ATTR do_load(grub_macho_t _macho,
|
||||
struct grub_macho_cmd *hdr0,
|
||||
void *_arg __attribute__ ((unused)))
|
||||
{
|
||||
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 (hdr->filesize)
|
||||
{
|
||||
grub_ssize_t read, toread = min (hdr->filesize, hdr->vmsize);
|
||||
if (macho->uncompressedXX)
|
||||
{
|
||||
if (hdr->fileoff + (grub_size_t) toread
|
||||
> _macho->uncompressed_sizeXX)
|
||||
read = -1;
|
||||
else
|
||||
{
|
||||
read = toread;
|
||||
grub_memcpy (offset + hdr->vmaddr,
|
||||
_macho->uncompressedXX + hdr->fileoff, read);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (grub_file_seek (_macho->file, hdr->fileoff
|
||||
+ _macho->offsetXX) == (grub_off_t) -1)
|
||||
return 1;
|
||||
read = grub_file_read (_macho->file, offset + hdr->vmaddr,
|
||||
toread);
|
||||
}
|
||||
|
||||
if (read != toread)
|
||||
{
|
||||
/* XXX How can we free memory from `load_hook'? */
|
||||
if (!grub_errno)
|
||||
grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
|
||||
filename);
|
||||
|
||||
return 1;
|
||||
}
|
||||
if (darwin_version)
|
||||
{
|
||||
const char *ptr = offset + hdr->vmaddr;
|
||||
const char *end = ptr + min (hdr->filesize, hdr->vmsize)
|
||||
- (sizeof ("Darwin Kernel Version ") - 1);
|
||||
for (; ptr < end; ptr++)
|
||||
if (grub_memcmp (ptr, "Darwin Kernel Version ",
|
||||
sizeof ("Darwin Kernel Version ") - 1) == 0)
|
||||
{
|
||||
ptr += sizeof ("Darwin Kernel Version ") - 1;
|
||||
*darwin_version = 0;
|
||||
end += (sizeof ("Darwin Kernel Version ") - 1);
|
||||
while (ptr < end && grub_isdigit (*ptr))
|
||||
*darwin_version = (*ptr++ - '0') + *darwin_version * 10;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (hdr->filesize < hdr->vmsize)
|
||||
grub_memset (offset + hdr->vmaddr + hdr->filesize,
|
||||
0, hdr->vmsize - hdr->filesize);
|
||||
return 0;
|
||||
}
|
||||
struct do_load_ctx ctx = {
|
||||
.flags = flags,
|
||||
.offset = offset,
|
||||
.filename = filename,
|
||||
.darwin_version = darwin_version
|
||||
};
|
||||
|
||||
if (darwin_version)
|
||||
*darwin_version = 0;
|
||||
|
||||
grub_macho_cmds_iterate (macho, do_load, 0, filename);
|
||||
grub_macho_cmds_iterate (macho, do_load, &ctx, filename);
|
||||
|
||||
return grub_errno;
|
||||
}
|
||||
|
||||
static int
|
||||
find_entry_point (grub_macho_t _macho __attribute__ ((unused)),
|
||||
struct grub_macho_cmd *hdr,
|
||||
void *_arg)
|
||||
{
|
||||
grub_macho_addr_t *entry_point = _arg;
|
||||
if (hdr->cmd == GRUB_MACHO_CMD_THREAD)
|
||||
*entry_point = ((grub_macho_thread_t *) hdr)->entry_point;
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_macho_addr_t
|
||||
SUFFIX (grub_macho_get_entry_point) (grub_macho_t macho, const char *filename)
|
||||
{
|
||||
grub_macho_addr_t entry_point = 0;
|
||||
auto int NESTED_FUNC_ATTR hook(grub_macho_t _macho,
|
||||
struct grub_macho_cmd *hdr,
|
||||
void *_arg __attribute__ ((unused)));
|
||||
int NESTED_FUNC_ATTR hook(grub_macho_t _macho __attribute__ ((unused)),
|
||||
struct grub_macho_cmd *hdr,
|
||||
void *_arg __attribute__ ((unused)))
|
||||
{
|
||||
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, filename);
|
||||
grub_macho_cmds_iterate (macho, find_entry_point, &entry_point, filename);
|
||||
return entry_point;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue