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2010-12-03 Sebastian Huber <sebastian.huber@embedded-brains.de>

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* start/start.S, startup/linkcmds: Use linker command base file.
This commit is contained in:
Sebastian Huber
2010-12-03 10:50:52 +00:00
parent f990c1ae61
commit dfee787dd2
3 changed files with 40 additions and 288 deletions
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4
c/src/lib/libbsp/arm/gp32/ChangeLog
View File

@@ -1,3 +1,7 @@
2010-12-03 Sebastian Huber <sebastian.huber@embedded-brains.de>
* start/start.S, startup/linkcmds: Use linker command base file.
2010-04-30 Sebastian Huber <sebastian.huber@embedded-brains.de>
* Makefile.am, preinstall.am: Added generic interrupt support modules.

30
c/src/lib/libbsp/arm/gp32/start/start.S
View File

@@ -11,6 +11,8 @@
* $Id$
*/
#include <bsp/linker-symbols.h>
/* Some standard definitions...*/
.equ PSR_MODE_USR, 0x10
.equ PSR_MODE_FIQ, 0x11
@@ -32,12 +34,12 @@ _start:
@---------------------------------------------------------------------------------
@ AXF addresses
@---------------------------------------------------------------------------------
.word _axf_text_start
.word _axf_ro_end
.word _axf_data_start
.word _axf_bss_end
.word _axf_bss_start
.word _axf_bss_end
.word bsp_section_text_begin
.word bsp_section_rodata_end
.word bsp_section_data_begin
.word bsp_section_bss_end
.word bsp_section_bss_begin
.word bsp_section_bss_end
@---------------------------------------------------------------------------------
@ GamePark magic sequence
@@ -77,29 +79,29 @@ _start2:
/* Enter IRQ mode and set up the IRQ stack pointer */
mov r0, #(PSR_MODE_IRQ | PSR_I | PSR_F) /* No interrupts */
msr cpsr, r0
ldr r1, =_irq_stack_size
ldr sp, =_irq_stack
ldr r1, =bsp_stack_irq_size
ldr sp, =bsp_stack_irq_begin
add sp, sp, r1
/* Enter FIQ mode and set up the FIQ stack pointer */
mov r0, #(PSR_MODE_FIQ | PSR_I | PSR_F) /* No interrupts */
msr cpsr, r0
ldr r1, =_fiq_stack_size
ldr sp, =_fiq_stack
ldr r1, =bsp_stack_fiq_size
ldr sp, =bsp_stack_fiq_begin
add sp, sp, r1
/* Enter ABT mode and set up the ABT stack pointer */
mov r0, #(PSR_MODE_ABT | PSR_I | PSR_F) /* No interrupts */
msr cpsr, r0
ldr r1, =_abt_stack_size
ldr sp, =_abt_stack
ldr r1, =bsp_stack_abt_size
ldr sp, =bsp_stack_abt_begin
add sp, sp, r1
/* Set up the SVC stack pointer last and stay in SVC mode */
mov r0, #(PSR_MODE_SVC | PSR_I | PSR_F) /* No interrupts */
msr cpsr, r0
ldr r1, =_svc_stack_size
ldr sp, =_svc_stack
ldr r1, =bsp_stack_svc_size
ldr sp, =bsp_stack_svc_begin
add sp, sp, r1
sub sp, sp, #0x64

294
c/src/lib/libbsp/arm/gp32/startup/linkcmds
View File

@@ -1,279 +1,25 @@
/*
* GP32 Linker script
*
* Written by Philippe Simons <loki_666@fastmail.fm>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
*
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm","elf32-littlearm")
OUTPUT_ARCH(arm)
ENTRY(_start)
/* SEARCH_DIR(/usr/local/rtems-arm-dev-tools/arm-rtems/lib); */
MEMORY {
sdram : ORIGIN = 0xc000000, LENGTH = 7M
SDRAM_MMU : ORIGIN = 0x0c000000, LENGTH = 16k
SDRAM : ORIGIN = 0x0c004000, LENGTH = 7M - 16k
NIRVANA : ORIGIN = 0, LENGTH = 0
}
/*
* Declare some sizes.
*/
REGION_ALIAS ("REGION_START", SDRAM);
REGION_ALIAS ("REGION_VECTOR", SDRAM);
REGION_ALIAS ("REGION_TEXT", SDRAM);
REGION_ALIAS ("REGION_TEXT_LOAD", SDRAM);
REGION_ALIAS ("REGION_RODATA", SDRAM);
REGION_ALIAS ("REGION_RODATA_LOAD", SDRAM);
REGION_ALIAS ("REGION_DATA", SDRAM);
REGION_ALIAS ("REGION_DATA_LOAD", SDRAM);
REGION_ALIAS ("REGION_FAST_TEXT", SDRAM);
REGION_ALIAS ("REGION_FAST_TEXT_LOAD", SDRAM);
REGION_ALIAS ("REGION_FAST_DATA", SDRAM);
REGION_ALIAS ("REGION_FAST_DATA_LOAD", SDRAM);
REGION_ALIAS ("REGION_BSS", SDRAM);
REGION_ALIAS ("REGION_WORK", SDRAM);
REGION_ALIAS ("REGION_STACK", SDRAM);
/* The base for SDRAM is set to umon's APPRAMBASE */
_sdram_base = DEFINED(_sdram_base) ? _sdram_base : 0xc000000;
_sdram_size = DEFINED(_sdram_size) ? _sdram_size : 7M;
RamBase = _sdram_base;
RamSize = _sdram_size;
HeapSize = DEFINED(HeapSize) ? HeapSize : 0x0;
_irq_stack_size = DEFINED(_irq_stack_size) ? _irq_stack_size : 0x1000;
_fiq_stack_size = DEFINED(_fiq_stack_size) ? _fiq_stack_size : 0x400;
_abt_stack_size = DEFINED(_abt_stack_size) ? _abt_stack_size : 0x100;
_svc_stack_size = DEFINED(_svc_stack_size) ? _svc_stack_size : 0x1000;
/* Do we need any of these for elf?
__DYNAMIC = 0; */
SECTIONS
{
.base :
{
arm_exception_table = .;
arm_reset_vect = .; /* 0x00 */
. += 4;
arm_undef_vect = .; /* 0x04 */
. += 4;
arm_swi_vect = .; /* 0x08 */
. += 4;
arm_iabrt_vect = .; /* 0x0c */
. += 4;
arm_dabrt_vect = .; /* 0x10 */
. += 4;
/* no vector here */
. += 4;
arm_irq_vect = .; /* 0x18 */
. += 4;
arm_fiq_vect = .; /* 0x1c */
. += 4;
/* FIXME: */
rtems_vector_table = .;
. += (8 * 4); /* 8 ARM interrupts */
bsp_vector_table = .;
. += (32 * 4); /* 32 S3C2400 interrupts */
. = ALIGN (0x100);
} > sdram
.text :
{
_axf_text_start = . ;
*(EXCLUDE_FILE (*text.iwram*) .text)
*(.text.*)
*(.stub)
/*
* Special FreeBSD sysctl sections.
*/
. = ALIGN (16);
__start_set_sysctl_set = .;
*(set_sysctl_*);
__stop_set_sysctl_set = ABSOLUTE(.);
*(set_domain_*);
*(set_pseudo_*);
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.gnu.linkonce.t*)
*(.glue_7)
*(.glue_7t)
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} > sdram
__text_end = . ;
.init :
{
*(.init)
} > sdram /*=0*/
.jcr :
{
*(.jcr)
} > sdram
.fini :
{
*(.fini)
} > sdram /*=0*/
.rodata :
{
*(.rodata)
*all.rodata*(*)
*(.roda)
*(.rodata.*)
*(.gnu.linkonce.r*)
SORT(CONSTRUCTORS)
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} > sdram = 0xff
.ctors :
{
/* gcc uses crtbegin.o to find the start of the constructors, so
we make sure it is first. Because this is a wildcard, it
doesn't matter if the user does not actually link against
crtbegin.o; the linker won't look for a file to match a
wildcard. The wildcard also means that it doesn't matter which
directory crtbegin.o is in. */
KEEP (*crtbegin.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} >sdram = 0
.dtors :
{
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} >sdram = 0
.eh_frame :
{
KEEP (*(.eh_frame))
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} >sdram = 0
.gcc_except_table :
{
*(.gcc_except_table*)
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} >sdram = 0
_axf_ro_end = . ;
.data ALIGN(4) :
{
_axf_data_start = ABSOLUTE(.);
*(.data)
*(.data.*)
*(.gnu.linkonce.d*)
CONSTRUCTORS
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} >sdram = 0xff
__data_end = . ;
.bss ALIGN(4):
{
_axf_bss_start = ABSOLUTE(.);
_clear_start = .;
*(.bss)
*(.bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(64);
_clear_end = .;
. = ALIGN (256);
_abt_stack = .;
. += _abt_stack_size;
. = ALIGN (256);
_irq_stack = .;
. += _irq_stack_size;
. = ALIGN (256);
_fiq_stack = .;
. += _fiq_stack_size;
. = ALIGN (256);
_svc_stack = .;
. += _svc_stack_size;
/*
* Ideally, the MMU's translation table would be in SRAM. But we
* don't have any. If we don't use more regions than TLB entries (64),
* the lookup will only happen once for each region.
*/
. = ALIGN (16 * 1024);
_ttbl_base = .;
. += (16 * 1024);
. = ALIGN (1024);
_bss_free_start = .;
WorkAreaBase = .;
} > sdram
_axf_bss_end = . ;
_end = . ;
__end__ = . ;
PROVIDE (end = _end);
/* Debugging stuff follows? */
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/*.stack 0x80000 : { _stack = .; *(.stack) }*/
/* These must appear regardless of . */
}
_ttbl_base = ORIGIN (SDRAM_MMU);
INCLUDE linkcmds.armv4