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author | Marti Bolivar <mbolivar@leaflabs.com> | 2011-11-15 03:10:04 -0500 |
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committer | Marti Bolivar <mbolivar@leaflabs.com> | 2012-04-11 16:52:17 -0400 |
commit | 4b245f8744ae7abc8d77a9b90f273106eee3541f (patch) | |
tree | 9c8f1b239d4baf80349071ef7e3d9c777f163035 /support/ld/libcs3_stm32_src/start_c.c | |
parent | 19fbeddca7111d751a22740ed5016ba50ad6dc95 (diff) | |
download | librambutan-4b245f8744ae7abc8d77a9b90f273106eee3541f.tar.gz librambutan-4b245f8744ae7abc8d77a9b90f273106eee3541f.zip |
Remove CS3-style initialization.
Remove libcs3-related bits from support/ld. Break them out into
libmaple proper and Wirish as appropriate: vector table definition and
ISR declarations go into libmaple proper, and startup code goes into
Wirish. Vector table symbols are included into common.inc from an
STM32 family-specific directory under support/ld/stm32.
This is a combination of 5 commits. Individual commit messages follow:
libcs3_stm32_src: Don't depend on cs3.h.
So we can use the existing toolchain.
Move ISR decls/vector table into libmaple proper.
This allows us to configure the vector table on a per-family basis.
- Move
support/ld/libcs3_stm32_src/stm32_isrs.S
stm32_vector_table.S
to
libmaple/stm32f1/isrs_performance.S
vector_table_performance.S,
respectively.
The directory libmaple/stm32f1/ is intended to hold all
STM32F1-specific code within libmaple. Obviously, there's a lot of
work to do before this becomes true.
- support/ld/libcs3_stm32_src/Makefile: Don't try to compile
stm32_isrs.S and stm32_vector_table.S anymore.
- Add libmaple/stm32f1/rules.mk to include these new files in the
standard libmaple build.
- support/make/target-config.mk: Add LIBMAPLE_MODULE_FAMILY, which
selects a directory to use as a family-specific libmaple
submodule.
- Makefile: Add LIBMAPLE_MODULE_FAMILY to LIBMAPLE_MODULES.
Remove support/ld/libcs3_stm32_src and derived object files.
From support/ld/libcs3_stm32_src, move start.S and start_c.c into
Wirish. Modify wirish/rules.mk accordingly.
Delete support/ld/libcs3_stm32_*_density.a. These are no longer
necessary, as the relevant objects are included in the standard Wirish
build. Remove the GROUP statements from the board linker scripts
accordingly.
Remove SEARCH_DIR(.) from common.inc; it's no longer necessary. Also
fix up some comments that are now out of date.
wirish/start_c.c: Don't use CS3-style memory initialization.
Switch memory initialization to a simpler style of initializing .data
if necessary, then zeroing .bss. Initializing .data is only necessary
during Flash builds, since during RAM builds, LOADADDR(.data) ==
ADDR(.data).
This makes libmaple completely incompatible with the CS3 startup
sequence. Subsequent commits will clean up the namespace to reflect
that fact.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Diffstat (limited to 'support/ld/libcs3_stm32_src/start_c.c')
-rw-r--r-- | support/ld/libcs3_stm32_src/start_c.c | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/support/ld/libcs3_stm32_src/start_c.c b/support/ld/libcs3_stm32_src/start_c.c deleted file mode 100644 index 2ab0212..0000000 --- a/support/ld/libcs3_stm32_src/start_c.c +++ /dev/null @@ -1,58 +0,0 @@ -/* CS3 start_c routine. - * - * Copyright (c) 2006, 2007 CodeSourcery Inc - * - * The authors hereby grant permission to use, copy, modify, distribute, - * and license this software and its documentation for any purpose, provided - * that existing copyright notices are retained in all copies and that this - * notice is included verbatim in any distributions. No written agreement, - * license, or royalty fee is required for any of the authorized uses. - * Modifications to this software may be copyrighted by their authors - * and need not follow the licensing terms described here, provided that - * the new terms are clearly indicated on the first page of each file where - * they apply. - */ - -#include "cs3.h" - -extern void __libc_init_array (void); - -extern int main (int, char **, char **); - -extern void exit (int) __attribute__ ((noreturn, weak)); - -void __attribute ((noreturn)) -__cs3_start_c (void) -{ - unsigned regions = __cs3_region_num; - const struct __cs3_region *rptr = __cs3_regions; - int exit_code; - - /* Initialize memory */ - for (regions = __cs3_region_num, rptr = __cs3_regions; regions--; rptr++) - { - long long *src = (long long *)rptr->init; - long long *dst = (long long *)rptr->data; - unsigned limit = rptr->init_size; - unsigned count; - - if (src != dst) - for (count = 0; count != limit; count += sizeof (long long)) - *dst++ = *src++; - else - dst = (long long *)((char *)dst + limit); - limit = rptr->zero_size; - for (count = 0; count != limit; count += sizeof (long long)) - *dst++ = 0; - } - - /* Run initializers. */ - __libc_init_array (); - - exit_code = main (0, NULL, NULL); - if (exit) - exit (exit_code); - /* If exit is NULL, make sure we don't return. */ - for (;;) - continue; -} |