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u-boot/examples/standalone/stubs.c

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Standalone Apps: Standalone apps should need only exports.h. Modify exports.h to remove its dependencies on other files, thus enabling standalone apps to require only exports.h from the U-Boot source tree. This appears to be the intent based on the following note: http://lists.denx.de/pipermail/u-boot/2010-January/067174.html Signed-off-by: Mike Partington <mparting@lexmark.com>
2010-10-27 10:31:09 +00:00
#include <common.h>
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
#include <exports.h>
standalone: use GCC_VERSION defined in compiler-gcc.h Now GCC_VERSION is defined in include/linux/compiler-gcc.h (with a little different definition). Use it and delete the one in examples/standlone/stub.c. This should work on Clang too because __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__ are also defined on Clang. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-09-03 17:40:59 +00:00
#include <linux/compiler.h>
* Patches by Richard Woodruff, 10 Jun 2004: - fix problems with examples/stubs.c for GCC >= 3.4 - fix problems with gd initialization * Enable FAT filesystem support for HMI10 board
2004-07-01 20:28:03 +00:00
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define FO(x) offsetof(struct jt_funcs, x)
x86: Rename i386 to x86 Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-13 09:43:28 +00:00
#if defined(CONFIG_X86)
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
/*
* x86 does not have a dedicated register to store the pointer to
* the global_data. Thus the jump table address is stored in a
* global variable, but such approach does not allow for execution
* from flash memory. The global_data address is passed as argv[-1]
* to the application program.
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
static struct jt_funcs *jt;
* Allow crc32 to be used at address 0x000 * Provide consistent interface to standalone applications to access the 'global_data' structure Provide a doc/README.standalone more useful to users/developers. * Make IceCube MGT5100 FEC driver work
2003-07-26 08:08:08 +00:00
gd_t *global_data;
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" movl %0, %%eax\n" \
" movl jt, %%ecx\n" \
" jmp *(%%ecx, %%eax)\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(FO(x)) : "eax", "ecx");
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
#elif defined(CONFIG_PPC)
/*
PPC: Use r2 instead of r29 as global data pointer R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc will refuse to use load/store multiple insns; instead, it issues a list of simple load/store instructions upon function entry and exit, resulting in bigger code size, which in turn makes the build for a few boards fail. Use r2 instead. Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-02-14 21:43:22 +00:00
* r2 holds the pointer to the global_data, r11 is a call-clobbered
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
* register
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
PPC: Use r2 instead of r29 as global data pointer R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc will refuse to use load/store multiple insns; instead, it issues a list of simple load/store instructions upon function entry and exit, resulting in bigger code size, which in turn makes the build for a few boards fail. Use r2 instead. Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-02-14 21:43:22 +00:00
" lwz %%r11, %0(%%r2)\n" \
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
" lwz %%r11, %1(%%r11)\n" \
" mtctr %%r11\n" \
" bctr\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "r11");
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
#elif defined(CONFIG_ARM)
arm64: core support Relocation code based on a patch by Scott Wood, which is: Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: David Feng <fenghua@phytium.com.cn>
2013-12-14 03:47:35 +00:00
#ifdef CONFIG_ARM64
/*
* x18 holds the pointer to the global_data, x9 is a call-clobbered
* register
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
arm64: core support Relocation code based on a patch by Scott Wood, which is: Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: David Feng <fenghua@phytium.com.cn>
2013-12-14 03:47:35 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" ldr x9, [x18, %0]\n" \
" ldr x9, [x9, %1]\n" \
" br x9\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "x9");
arm64: core support Relocation code based on a patch by Scott Wood, which is: Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: David Feng <fenghua@phytium.com.cn>
2013-12-14 03:47:35 +00:00
#else
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
/*
ARM: fix the standalone programs The standalone programs do not use the api calls, but rely directly on u-boot variable gd->jt for the jump table. Commit fe1378a - "ARM: use r9 for gd" changed the register holding the address of gd, but the assembly code in the standalone examples was not updated accordingly. This broke the programs on ARM relying on the jumptable in the v2013.10 release. This patch unbricks them by using the correct register. Cc: Michal Simek <monstr@monstr.eu> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2013-11-21 21:32:51 +00:00
* r9 holds the pointer to the global_data, ip is a call-clobbered
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
* register
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
ARM: fix the standalone programs The standalone programs do not use the api calls, but rely directly on u-boot variable gd->jt for the jump table. Commit fe1378a - "ARM: use r9 for gd" changed the register holding the address of gd, but the assembly code in the standalone examples was not updated accordingly. This broke the programs on ARM relying on the jumptable in the v2013.10 release. This patch unbricks them by using the correct register. Cc: Michal Simek <monstr@monstr.eu> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2013-11-21 21:32:51 +00:00
" ldr ip, [r9, %0]\n" \
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
" ldr pc, [ip, %1]\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "ip");
arm64: core support Relocation code based on a patch by Scott Wood, which is: Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: David Feng <fenghua@phytium.com.cn>
2013-12-14 03:47:35 +00:00
#endif
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
#elif defined(CONFIG_MIPS)
Add support for 64-bit MIPS to examples/standalone Signed-off-by: Stanislav Galabov <sgalabov@gmail.com>
2016-02-17 13:23:33 +00:00
#ifdef CONFIG_CPU_MIPS64
/*
* k0 ($26) holds the pointer to the global_data; t9 ($25) is a call-
* clobbered register that is also used to set gp ($26). Note that the
* jr instruction also executes the instruction immediately following
* it; however, GCC/mips generates an additional `nop' after each asm
* statement
*/
#define EXPORT_FUNC(f, a, x, ...) \
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" ld $25, %0($26)\n" \
" ld $25, %1($25)\n" \
" jr $25\n" \
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "t9");
#else
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
/*
* k0 ($26) holds the pointer to the global_data; t9 ($25) is a call-
* clobbered register that is also used to set gp ($26). Note that the
* jr instruction also executes the instruction immediately following
* it; however, GCC/mips generates an additional `nop' after each asm
* statement
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" lw $25, %0($26)\n" \
" lw $25, %1($25)\n" \
" jr $25\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "t9");
Add support for 64-bit MIPS to examples/standalone Signed-off-by: Stanislav Galabov <sgalabov@gmail.com>
2016-02-17 13:23:33 +00:00
#endif
Patches by Scott McNutt, 24 Aug 2004: - Add support for Altera Nios-II processors. - Add support for Psyent PCI-5441 board. - Add support for Psyent PK1C20 board.
2004-10-10 21:27:30 +00:00
#elif defined(CONFIG_NIOS2)
/*
nios2: fix r15 issue for gcc4 The "-ffixed-r15" option doesn't work well for gcc4. Since we don't use gp for small data with option "-G0", we can use gp as global data pointer. This allows compiler to use r15. It is necessary for gcc4 to work properly. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
2010-05-21 03:08:03 +00:00
* gp holds the pointer to the global_data, r8 is call-clobbered
Patches by Scott McNutt, 24 Aug 2004: - Add support for Altera Nios-II processors. - Add support for Psyent PCI-5441 board. - Add support for Psyent PK1C20 board.
2004-10-10 21:27:30 +00:00
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
Patches by Scott McNutt, 24 Aug 2004: - Add support for Altera Nios-II processors. - Add support for Psyent PCI-5441 board. - Add support for Psyent PK1C20 board.
2004-10-10 21:27:30 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" movhi r8, %%hi(%0)\n" \
" ori r8, r0, %%lo(%0)\n" \
nios2: fix r15 issue for gcc4 The "-ffixed-r15" option doesn't work well for gcc4. Since we don't use gp for small data with option "-G0", we can use gp as global data pointer. This allows compiler to use r15. It is necessary for gcc4 to work properly. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
2010-05-21 03:08:03 +00:00
" add r8, r8, gp\n" \
Patches by Scott McNutt, 24 Aug 2004: - Add support for Altera Nios-II processors. - Add support for Psyent PCI-5441 board. - Add support for Psyent PK1C20 board.
2004-10-10 21:27:30 +00:00
" ldw r8, 0(r8)\n" \
" ldw r8, %1(r8)\n" \
" jmp r8\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "gp");
* Some code cleanup * Patch by Josef Baumgartner, 10 Feb 2004: Fixes for Coldfire port * Patch by Brad Kemp, 11 Feb 2004: Fix CFI flash driver problems
2004-02-12 00:47:09 +00:00
#elif defined(CONFIG_M68K)
/*
* d7 holds the pointer to the global_data, a0 is a call-clobbered
* register
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
* Some code cleanup * Patch by Josef Baumgartner, 10 Feb 2004: Fixes for Coldfire port * Patch by Brad Kemp, 11 Feb 2004: Fix CFI flash driver problems
2004-02-12 00:47:09 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" move.l %%d7, %%a0\n" \
" adda.l %0, %%a0\n" \
" move.l (%%a0), %%a0\n" \
" adda.l %1, %%a0\n" \
" move.l (%%a0), %%a0\n" \
" jmp (%%a0)\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "a0");
Patches by Yasushi Shoji, 29 Jun 2004: - add empty include/asm-microblaze/processor.h - add to CREDITS and MAINTAINERS - add gd initialization - add MicroBlaze and SUZAKU board to MAKEALL script - add reset support for SUZAKU - add flush_cache() for MicroBlaze - add CFG_FLASH_SIZE to include/configs/suzaku.h since we have fixed size flash memory on SUZAKU
2004-07-10 23:48:41 +00:00
#elif defined(CONFIG_MICROBLAZE)
* Patch by Yasushi Shoji, 07 Apr 2004: - add support for microblaze processors - add support for AtmarkTechno "suzaku" board
2004-04-18 21:13:41 +00:00
/*
* r31 holds the pointer to the global_data. r5 is a call-clobbered.
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
* Patch by Yasushi Shoji, 07 Apr 2004: - add support for microblaze processors - add support for AtmarkTechno "suzaku" board
2004-04-18 21:13:41 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" lwi r5, r31, %0\n" \
" lwi r5, r5, %1\n" \
" bra r5\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "r5");
sh: First support code of SuperH. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2007-05-13 11:58:00 +00:00
#elif defined(CONFIG_SH)
/*
* r13 holds the pointer to the global_data. r1 is a call clobbered.
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
Fix coding style issues; update CHANGELOG. Signed-off-by: Wolfgang Denk <wd@denx.de>
2007-12-27 00:52:50 +00:00
asm volatile ( \
" .align 2\n" \
" .globl " #x "\n" \
#x ":\n" \
" mov r13, r1\n" \
" add %0, r1\n" \
sh: Fix cannot execute a stand-alone application Address calculated in EXPORT_FUNC in SuperH was wrong, I revised it. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2008-10-09 04:54:33 +00:00
" mov.l @r1, r2\n" \
" add %1, r2\n" \
" mov.l @r2, r1\n" \
Fix coding style issues; update CHANGELOG. Signed-off-by: Wolfgang Denk <wd@denx.de>
2007-12-27 00:52:50 +00:00
" jmp @r1\n" \
" nop\n" \
" nop\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "r1", "r2");
nds32: standalone support Add standalone program related support for nds32 architecture. Signed-off-by: Macpaul Lin <macpaul@andestech.com>
2011-10-11 22:33:20 +00:00
#elif defined(CONFIG_NDS32)
/*
* r16 holds the pointer to the global_data. gp is call clobbered.
* not support reduced register (16 GPR).
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
nds32: standalone support Add standalone program related support for nds32 architecture. Signed-off-by: Macpaul Lin <macpaul@andestech.com>
2011-10-11 22:33:20 +00:00
asm volatile ( \
" .globl " #x "\n" \
#x ":\n" \
" lwi $r16, [$gp + (%0)]\n" \
" lwi $r16, [$r16 + (%1)]\n" \
" jr $r16\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "$r16");
arc: add support for standalone programs Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Francois Bedard <fbedard@synopsys.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Heiko Schocher <hs@denx.de>
2014-02-04 08:56:17 +00:00
#elif defined(CONFIG_ARC)
/*
* r25 holds the pointer to the global_data. r10 is call clobbered.
*/
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
#define EXPORT_FUNC(f, a, x, ...) \
arc: add support for standalone programs Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Francois Bedard <fbedard@synopsys.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Heiko Schocher <hs@denx.de>
2014-02-04 08:56:17 +00:00
asm volatile( \
" .align 4\n" \
" .globl " #x "\n" \
#x ":\n" \
" ld r10, [r25, %0]\n" \
" ld r10, [r10, %1]\n" \
" j [r10]\n" \
Export redesign this is an atempt to make the export of functions typesafe. I replaced the jumptable void ** by a struct (jt_funcs) with function pointers. The EXPORT_FUNC macro now has 3 fixed parameters and one variadic parameter The first is the name of the exported function, the rest of the parameters are used to format a functionpointer in the jumptable, the EXPORT_FUNC macros are expanded three times, 1. to declare the members of the struct 2. to initialize the structmember pointers 3. to call the functions in stubs.c Signed-off-by: Martin Dorwig <dorwig@tetronik.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> (resending to the list since my tweaks are not quite trivial)
2015-01-26 22:22:54 +00:00
: : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "r10");
xtensa: add support for the xtensa processor architecture [1/2] The Xtensa processor architecture is a configurable, extensible, and synthesizable 32-bit RISC processor core provided by Cadence. This is the first part of the basic architecture port with changes to common files. The 'arch/xtensa' directory, and boards and additional drivers will be in separate commits. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-10 15:36:43 +00:00
#elif defined(CONFIG_XTENSA)
/*
* Global data ptr is in global_data, jump table ptr is in jt.
* Windowed ABI: Jump just past 'entry' in target and adjust stack frame
* (extract stack frame size from target 'entry' instruction).
*/
static void **jt;
#if defined(__XTENSA_CALL0_ABI__)
#define EXPORT_FUNC(f, a, x, ...) \
asm volatile ( \
" .extern jt\n" \
" .globl " #x "\n" \
" .align 4\n" \
#x ":\n" \
" l32i a8, %0, 0\n" \
" l32i a8, a8, %1\n" \
" jx a8\n" \
: : "r"(jt), "i" (FO(x)) : "a8");
#elif defined(__XTENSA_WINDOWED_ABI__)
#if XCHAL_HAVE_BE
# define SFT "8"
#else
# define SFT "12"
#endif
#define EXPORT_FUNC(f, a, x, ...) \
asm volatile ( \
" .extern jt\n" \
" .globl " #x "\n" \
" .align 4\n" \
#x ":\n" \
" entry sp, 16\n" \
" l32i a8, %0, 0\n" \
" l32i a8, a8, %1\n" \
" l32i a9, a8, 0\n" \
" extui a9, a9, " SFT ", 12\n" \
" subx8 a9, a9, sp\n" \
" movi a10, 16\n" \
" sub a9, a10, a9\n" \
" movsp sp, a9\n" \
" addi a8, a8, 3\n" \
" jx a8\n" \
: : "r"(jt), "i" (FO(x)) : "a8", "a9", "a10");
#else
#error Unsupported Xtensa ABI
#endif
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
#else
nds32: standalone support Add standalone program related support for nds32 architecture. Signed-off-by: Macpaul Lin <macpaul@andestech.com>
2011-10-11 22:33:20 +00:00
/*" addi $sp, $sp, -24\n" \
" br $r16\n" \*/
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
#error stubs definition missing for this architecture
#endif
/* This function is necessary to prevent the compiler from
* generating prologue/epilogue, preparing stack frame etc.
* The stub functions are special, they do not use the stack
* frame passed to them, but pass it intact to the actual
* implementation. On the other hand, asm() statements with
* arguments can be used only inside the functions (gcc limitation)
*/
standalone: use GCC_VERSION defined in compiler-gcc.h Now GCC_VERSION is defined in include/linux/compiler-gcc.h (with a little different definition). Use it and delete the one in examples/standlone/stub.c. This should work on Clang too because __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__ are also defined on Clang. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-09-03 17:40:59 +00:00
#if GCC_VERSION < 30400
* Patches by Richard Woodruff, 10 Jun 2004: - fix problems with examples/stubs.c for GCC >= 3.4 - fix problems with gd initialization * Enable FAT filesystem support for HMI10 board
2004-07-01 20:28:03 +00:00
static
#endif /* GCC_VERSION */
void __attribute__((unused)) dummy(void)
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
{
#include <_exports.h>
}
Change stub example to use asm-generic/sections.h We can use the declarations of __bss_start and _end from this header instead of declaring them locally. Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-05 14:39:39 +00:00
#include <asm/sections.h>
Add startup code to clear the BSS of standalone applications
2004-04-12 16:12:49 +00:00
Make sure that argv[] argument pointers are not modified. The hush shell dynamically allocates (and re-allocates) memory for the argument strings in the "char *argv[]" argument vector passed to commands. Any code that modifies these pointers will cause serious corruption of the malloc data structures and crash U-Boot, so make sure the compiler can check that no such modifications are being done by changing the code into "char * const argv[]". This modification is the result of debugging a strange crash caused after adding a new command, which used the following argument processing code which has been working perfectly fine in all Unix systems since version 6 - but not so in U-Boot: int main (int argc, char **argv) { while (--argc > 0 && **++argv == '-') { /* ====> */ while (*++*argv) { switch (**argv) { case 'd': debug++; break; ... default: usage (); } } } ... } The line marked "====>" will corrupt the malloc data structures and usually cause U-Boot to crash when the next command gets executed by the shell. With the modification, the compiler will prevent this with an error: increment of read-only location '*argv' N.B.: The code above can be trivially rewritten like this: while (--argc > 0 && **++argv == '-') { char *arg = *argv; while (*++arg) { switch (*arg) { ... Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Mike Frysinger <vapier@gentoo.org>
2010-06-28 20:00:46 +00:00
void app_startup(char * const *argv)
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
{
Change stub example to use asm-generic/sections.h We can use the declarations of __bss_start and _end from this header instead of declaring them locally. Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-05 14:39:39 +00:00
char *cp = __bss_start;
Add startup code to clear the BSS of standalone applications
2004-04-12 16:12:49 +00:00
/* Zero out BSS */
Change stub example to use asm-generic/sections.h We can use the declarations of __bss_start and _end from this header instead of declaring them locally. Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-05 14:39:39 +00:00
while (cp < _end)
Add startup code to clear the BSS of standalone applications
2004-04-12 16:12:49 +00:00
*cp++ = 0;
x86: Rename i386 to x86 Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-13 09:43:28 +00:00
#if defined(CONFIG_X86)
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
/* x86 does not have a dedicated register for passing global_data */
* Allow crc32 to be used at address 0x000 * Provide consistent interface to standalone applications to access the 'global_data' structure Provide a doc/README.standalone more useful to users/developers. * Make IceCube MGT5100 FEC driver work
2003-07-26 08:08:08 +00:00
global_data = (gd_t *)argv[-1];
jt = global_data->jt;
* Implement new mechanism to export U-Boot's functions to standalone applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
#endif
}
#undef EXPORT_FUNC
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