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tools/imagetool: remove linker script

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Commit a93648d197 introduced linker generated
lists for imagetool which is the base for some host tools (mkimage, dumpimage,
et al.).  Unfortunately some host tool chains do not support the used type of
linker scripts. Therefore this commit broke these host-tools for them, namely
FreeBSD and Darwin (OS/X).

This commit tries to fix this. In order to have a clean distinction between host
and embedded code space we need to introduce our own linker generated list
instead of re-using the available linker_lists.h provided functionality.  So we
copy the implementation used in linux kernel script/mod/file2alias.c which has
the very same problem (cause it is a host tool). This code also comes with an
abstraction for Mach-O binary format used in Darwin systems.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
This commit is contained in:
Andreas Bießmann
2015-02-09 00:06:10 +01:00
committed by Tom Rini
parent 312aca4e69
commit 1fddd7b63c
5 changed files with 67 additions and 55 deletions
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56
tools/imagetool.h
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@@ -20,15 +20,6 @@
#include <unistd.h>
#include <u-boot/sha1.h>
/* define __KERNEL__ in order to get the definitions
* required by the linker list. This is probably not
* the best way to do this */
#ifndef __KERNEL__
#define __KERNEL__
#include <linker_lists.h>
#undef __KERNEL__
#endif /* __KERNEL__ */
#include "fdt_host.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
@@ -194,6 +185,46 @@ int imagetool_save_subimage(
void pbl_load_uboot(int fd, struct image_tool_params *mparams);
#define ___cat(a, b) a ## b
#define __cat(a, b) ___cat(a, b)
/* we need some special handling for this host tool running eventually on
* Darwin. The Mach-O section handling is a bit different than ELF section
* handling. The differnces in detail are:
* a) we have segments which have sections
* b) we need a API call to get the respective section symbols */
#if defined(__MACH__)
#include <mach-o/getsect.h>
#define INIT_SECTION(name) do { \
unsigned long name ## _len; \
char *__cat(pstart_, name) = getsectdata("__TEXT", \
#name, &__cat(name, _len)); \
char *__cat(pstop_, name) = __cat(pstart_, name) + \
__cat(name, _len); \
__cat(__start_, name) = (void *)__cat(pstart_, name); \
__cat(__stop_, name) = (void *)__cat(pstop_, name); \
} while (0)
#define SECTION(name) __attribute__((section("__TEXT, " #name)))
struct image_type_params **__start_image_type, **__stop_image_type;
#else
#define INIT_SECTION(name) /* no-op for ELF */
#define SECTION(name) __attribute__((section(#name)))
/* We construct a table of pointers in an ELF section (pointers generally
* go unpadded by gcc). ld creates boundary syms for us. */
extern struct image_type_params *__start_image_type[], *__stop_image_type[];
#endif /* __MACH__ */
#if !defined(__used)
# if __GNUC__ == 3 && __GNUC_MINOR__ < 3
# define __used __attribute__((__unused__))
# else
# define __used __attribute__((__used__))
# endif
#endif
#define U_BOOT_IMAGE_TYPE( \
_id, \
_name, \
@@ -208,7 +239,8 @@ void pbl_load_uboot(int fd, struct image_tool_params *mparams);
_fflag_handle, \
_vrec_header \
) \
ll_entry_declare(struct image_type_params, _id, image_type) = { \
static struct image_type_params __cat(image_type_, _id) = \
{ \
.name = _name, \
.header_size = _header_size, \
.hdr = _header, \
@@ -220,6 +252,8 @@ void pbl_load_uboot(int fd, struct image_tool_params *mparams);
.check_image_type = _check_image_type, \
.fflag_handle = _fflag_handle, \
.vrec_header = _vrec_header \
}
}; \
static struct image_type_params *SECTION(image_type) __used \
__cat(image_type_ptr_, _id) = &__cat(image_type_, _id)
#endif /* _IMAGETOOL_H_ */