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ChibiOS
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New PPC startup file. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8048 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
Giovanni Di Sirio 2015-06-19 09:49:29 +00:00
parent 048acf5bdf
commit d0bd017d3b
2 changed files with 162 additions and 39 deletions
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4
demos/SPC5/RT-SPC560P-EVB/.cproject
View File

@ -39,7 +39,7 @@
</cconfiguration>
</storageModule>
<storageModule moduleId="cdtBuildSystem" version="4.0.0">
<project id="RT-SPC560B-EVB.null.2129661677" name="RT-SPC560B-EVB"/>
<project id="RT-SPC560P-EVB.null.2129661677" name="RT-SPC560P-EVB"/>
</storageModule>
<storageModule moduleId="scannerConfiguration">
<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
@ -50,7 +50,7 @@
<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
<storageModule moduleId="refreshScope" versionNumber="2">
<configuration configurationName="Default">
<resource resourceType="PROJECT" workspacePath="/RT-SPC560B-EVB"/>
<resource resourceType="PROJECT" workspacePath="/RT-SPC560P-EVB"/>
</configuration>
</storageModule>
<storageModule moduleId="org.eclipse.cdt.internal.ui.text.commentOwnerProjectMappings"/>

197
os/common/ports/e200/compilers/GCC/crt0.s
View File

@ -19,12 +19,74 @@
/**
* @file PPC/crt0.s
* @brief Generic PowerPC startup file for ChibiOS/RT.
* @brief Generic PowerPC startup file for ChibiOS.
*
* @addtogroup PPC_CORE
* @{
*/
/*===========================================================================*/
/* Module constants. */
/*===========================================================================*/
#if !defined(FALSE) || defined(__DOXYGEN__)
#define FALSE 0
#endif
#if !defined(TRUE) || defined(__DOXYGEN__)
#define TRUE 1
#endif
/*===========================================================================*/
/* Module pre-compile time settings. */
/*===========================================================================*/
/**
* @brief Stack segments initialization switch.
*/
#if !defined(CRT0_STACKS_FILL_PATTERN) || defined(__DOXYGEN__)
#define CRT0_STACKS_FILL_PATTERN 0x55555555
#endif
/**
* @brief Stack segments initialization switch.
*/
#if !defined(CRT0_INIT_STACKS) || defined(__DOXYGEN__)
#define CRT0_INIT_STACKS TRUE
#endif
/**
* @brief DATA segment initialization switch.
*/
#if !defined(CRT0_INIT_DATA) || defined(__DOXYGEN__)
#define CRT0_INIT_DATA TRUE
#endif
/**
* @brief BSS segment initialization switch.
*/
#if !defined(CRT0_INIT_BSS) || defined(__DOXYGEN__)
#define CRT0_INIT_BSS TRUE
#endif
/**
* @brief Constructors invocation switch.
*/
#if !defined(CRT0_CALL_CONSTRUCTORS) || defined(__DOXYGEN__)
#define CRT0_CALL_CONSTRUCTORS TRUE
#endif
/**
* @brief Destructors invocation switch.
*/
#if !defined(CRT0_CALL_DESTRUCTORS) || defined(__DOXYGEN__)
#define CRT0_CALL_DESTRUCTORS TRUE
#endif
/*===========================================================================*/
/* Code section. */
/*===========================================================================*/
#if !defined(__DOXYGEN__)
.section .crt0, "ax"
@ -32,27 +94,58 @@
.globl _boot_address
.type _boot_address, @function
_boot_address:
/*
* Stack setup.
*/
/* Stack setup.*/
lis %r1, __process_stack_end__@h
ori %r1, %r1, __process_stack_end__@l
li %r0, 0
stwu %r0, -8(%r1)
/*
* Small sections registers initialization.
*/
/* Small sections registers initialization.*/
lis %r2, __sdata2_start__@h
ori %r2, %r2, __sdata2_start__@l
lis %r13, __sdata_start__@h
ori %r13, %r13, __sdata_start__@l
/*
* Early initialization.
*/
/* Early initialization.*/
bl __early_init
/*
* BSS clearing.
*/
#if CRT0_INIT_STACKS == TRUE
/* Stacks fill pattern.*/
lis %r7, CRT0_STACKS_FILL_PATTERN@h
ori %r7, %r7, CRT0_STACKS_FILL_PATTERN@l
/* IRQ Stack initialization. Note, the architecture does not use this
stack, the size is usually zero. An OS can have special SW handling
and require this. A 4 bytes alignment is assmend and required.*/
lis %r4, __irq_stack_base__@h
ori %r4, %r4, __irq_stack_base__@l
lis %r5, __irq_stack_end__@h
ori %r5, %r5, __irq_stack_end__@l
.irqsloop:
cmpl cr0, %r4, %r5
bge cr0, .irqsend
stw %r7, 0(%r4)
addi %r4, %r4, 4
b .irqsloop
.irqsend:
/* Process Stack initialization. Note, does not overwrite the already
written EABI frame. A 4 bytes alignment is assmend and required.*/
lis %r4, __process_stack_base__@h
ori %r4, %r4, __process_stack_base__@l
lis %r5, (__process_stack_end__ - 8)@h
ori %r5, %r5, (__process_stack_end__ - 8)@l
.prcsloop:
cmpl cr0, %r4, %r5
bge cr0, .prcsend
stw %r7, 0(%r4)
addi %r4, %r4, 4
b .prcsloop
.prcsend:
#endif
#if CRT0_INIT_BSS == TRUE
/* BSS clearing.*/
lis %r4, __bss_start__@h
ori %r4, %r4, __bss_start__@l
lis %r5, __bss_end__@h
@ -65,9 +158,10 @@ _boot_address:
addi %r4, %r4, 4
b .bssloop
.bssend:
/*
* DATA initialization.
*/
#endif
#if CRT0_INIT_DATA == TRUE
/* DATA initialization.*/
lis %r4, __romdata_start__@h
ori %r4, %r4, __romdata_start__@l
lis %r5, __data_start__@h
@ -83,37 +177,66 @@ _boot_address:
addi %r5, %r5, 4
b .dataloop
.dataend:
/*
* Late initialization.
*/
#endif
/* Late initialization.*/
bl __late_init
/*
* Main program invocation.
*/
#if CRT0_CALL_CONSTRUCTORS == TRUE
/* Constructors invocation.*/
lis %r4, __init_array_start@h
ori %r4, %r4, __init_array_start@l
lis %r5, __init_array_end@h
ori %r5, %r5, __init_array_end@l
.iniloop:
cmplw %cr0, %r4, %r5
bge %cr0, .iniend
lwz %r6, 0(%r4)
mtctr %r6
addi %r4, %r4, 4
bctrl
b .iniloop
.iniend:
#endif
/* Main program invocation.*/
bl main
b _main_exit_handler
/*
* Default main exit code, infinite loop.
*/
.weak _main_exit_handler
.globl _main_exit_handler
.type _main_exit_handler, @function
_main_exit_handler:
b _main_exit_handler
#if CRT0_CALL_DESTRUCTORS == TRUE
/* Destructors invocation.*/
lis %r4, __fini_array_start@h
ori %r4, %r4, __fini_array_start@l
lis %r5, __fini_array_end@h
ori %r5, %r5, __fini_array_end@l
.finiloop:
cmplw %cr0, %r4, %r5
bge %cr0, .finiend
lwz %r6, 0(%r4)
mtctr %r6
addi %r4, %r4, 4
bctrl
b .finiloop
.finiend:
#endif
/*
* Default early initialization code, none.
*/
/* Branching to the defined exit handler.*/
b __default_exit
/* Default main exit code, infinite loop.*/
.weak __default_exit
.globl __default_exit
.type __default_exit, @function
__default_exit:
b __default_exit
/* Default early initialization code, none.*/
.weak __early_init
.globl __early_init
.type __early_init, @function
__early_init:
blr
/*
* Default late initialization code, none.
*/
/* Default late initialization code, none.*/
.weak __late_init
.globl __late_init
.type __late_init, @function