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2004-11-22 Jennifer Averett <jennifer@OARcorp.com>

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PR 581/bsps
	* Makefile.am, bsp_specs, configure.ac, clock/Makefile.am,
	include/bsp.h, start/Makefile.am, start/start.S, startup/Makefile.am,
	startup/bspstart.c, startup/linkcmds, vectors/Makefile.am,
	vectors/vectors.S, wrapup/Makefile.am: Convert PSIM to new exception
	model.
	* irq/Makefile.am, irq/irq.c, irq/irq.h, irq/irq_asm.S,
	irq/irq_init.c: New files.
	* clock/clock.c: Removed.
This commit is contained in:
Jennifer Averett
2004-11-22 22:30:59 +00:00
parent 24fced7e13
commit 561f53b71e
18 changed files with 433 additions and 270 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
c/src/lib/libbsp/powerpc/psim/ChangeLog
View File

@@ -1,3 +1,15 @@
2004-11-22 Jennifer Averett <jennifer@OARcorp.com>
PR 581/bsps
* Makefile.am, bsp_specs, configure.ac, clock/Makefile.am,
include/bsp.h, start/Makefile.am, start/start.S, startup/Makefile.am,
startup/bspstart.c, startup/linkcmds, vectors/Makefile.am,
vectors/vectors.S, wrapup/Makefile.am: Convert PSIM to new exception
model.
* irq/Makefile.am, irq/irq.c, irq/irq.h, irq/irq_asm.S,
irq/irq_init.c: New files.
* clock/clock.c: Removed.
2003-12-16 Ralf Corsepius <corsepiu@faw.uni-ulm.de>
PR 533/bsps

2
c/src/lib/libbsp/powerpc/psim/Makefile.am
View File

@@ -6,7 +6,7 @@ ACLOCAL_AMFLAGS = -I ../../../../../../aclocal
# wrapup is the one that actually builds and installs the library
# from the individual .rel files built in other directories
SUBDIRS = include start clock console startup shmsupp timer vectors \
SUBDIRS = include start irq clock console startup shmsupp timer vectors\
@exceptions@ wrapup \
tools

8
c/src/lib/libbsp/powerpc/psim/bsp_specs
View File

@@ -10,13 +10,13 @@
%{!qnolinkcmds: -T linkcmds%s}}}
*startfile:
%{!qrtems: %(old_startfile)} %{!nostdlib: %{qrtems: ecrti%O%s \
%{!qrtems: %(old_startfile)} %{!nostdlib: %{qrtems: ecrti%O%s rtems_crti%O%s crtbegin.o%s \
%{!qrtems_debug: start.o%s} \
%{qrtems_debug: start_g.o%s}}}
*endfile:
%{!qrtems: %(old_endfile)} %{qrtems: ecrtn%O%s}
*link:
%{!qrtems: %(old_link)} %{qrtems: -Qy -dp -Bstatic -e _start -u __vectors}
*endfile:
%{!qrtems: %(old_endfile)} %{qrtems: crtend.o%s ecrtn.o%s}

13
c/src/lib/libbsp/powerpc/psim/clock/Makefile.am
View File

@@ -3,9 +3,9 @@
##
PGM = $(ARCH)/clock.rel
VPATH = @srcdir@:@srcdir@/../../shared/clock
C_FILES = clock.c
C_FILES = p_clock.c
C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.$(OBJEXT))
OBJS = $(C_O_FILES)
@@ -17,15 +17,8 @@ include $(top_srcdir)/../../../../../../automake/lib.am
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(OBJS)
$(make-rel)
# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
all-local: $(ARCH) $(OBJS) $(PGM)
.PRECIOUS: $(PGM)
EXTRA_DIST = clock.c
all-local: $(ARCH) $(OBJS)
include $(top_srcdir)/../../../../../../automake/local.am

51
c/src/lib/libbsp/powerpc/psim/clock/clock.c
View File

@@ -1,51 +0,0 @@
/*
* Instantiate the clock driver shell for psim based
* on the decrementer register.
*
* $Id$
*/
#include <rtems.h>
/*
* If defined, speed up the clock ticks while the idle task is running so
* time spent in the idle task is minimized. This significantly reduces
* the wall time required to execute the RTEMS test suites.
*/
/* #define CLOCK_DRIVER_USE_FAST_IDLE */
#define CLOCK_VECTOR PPC_IRQ_DECREMENTER
/* On psim, each click of the decrementer register corresponds
* to 1 instruction. By setting this to 100, we are indicating
* that we are assuming it can execute 100 instructions per
* microsecond. This corresponds to sustaining 1 instruction
* per cycle at 100 Mhz. Whether this is a good guess or not
* is anyone's guess.
*/
extern int PSIM_INSTRUCTIONS_PER_MICROSECOND;
unsigned int PPC_DECREMENTER_CLICKS;
#define Clock_driver_support_install_isr( _new, _old ) \
do { \
_old = (rtems_isr_entry) set_vector( _new, CLOCK_VECTOR, 1 ); \
PPC_DECREMENTER_CLICKS = (unsigned int)&PSIM_INSTRUCTIONS_PER_MICROSECOND; \
PPC_DECREMENTER_CLICKS *= rtems_configuration_get_microseconds_per_tick(); \
/* PPC_DECREMENTER_CLICKS = 5000; */ \
} while(0)
#define Clock_driver_support_initialize_hardware() \
do { \
unsigned int _clicks = PPC_DECREMENTER_CLICKS; \
PPC_Set_decrementer( _clicks ); \
} while (0)
#define Clock_driver_support_at_tick() \
Clock_driver_support_initialize_hardware()
#define Clock_driver_support_shutdown_hardware()
#include "../../../shared/clockdrv_shell.c"

3
c/src/lib/libbsp/powerpc/psim/configure.ac
View File

@@ -38,6 +38,7 @@ AC_CONFIG_FILES([Makefile
clock/Makefile
console/Makefile
include/Makefile
irq/Makefile
shmsupp/Makefile
start/Makefile
startup/Makefile
@@ -45,6 +46,6 @@ timer/Makefile
vectors/Makefile
wrapup/Makefile])
RTEMS_PPC_EXCEPTIONS([old])
RTEMS_PPC_EXCEPTIONS([new])
AC_OUTPUT

65
c/src/lib/libbsp/powerpc/psim/include/bsp.h
View File

@@ -54,30 +54,39 @@ extern "C" {
#else
#include <rtems.h>
#include <console.h>
#include <libcpu/io.h>
#include <clockdrv.h>
#include <console.h>
#include <iosupp.h>
/*
* Define the time limits for RTEMS Test Suite test durations.
* Long test and short test duration limits are provided. These
* values are in seconds and need to be converted to ticks for the
* application.
*
*/
#define MAX_LONG_TEST_DURATION 300 /* 5 minutes = 300 seconds */
#define MAX_SHORT_TEST_DURATION 3 /* 3 seconds */
#include <bsp/vectors.h>
/*
* Stuff for Time Test 27
*/
#if defined(RTEMS_TM27)
#include <bsp/irq.h>
#define MUST_WAIT_FOR_INTERRUPT 1
#define Install_tm27_vector( _handler ) \
set_vector( (_handler), PPC_IRQ_DECREMENTER, 1 )
/* #define Install_tm27_vector( _handler ) \
set_vector( (_handler), PPC_IRQ_DECREMENTER, 1 ) */
void nullFunc() {}
static rtems_irq_connect_data clockIrqData = {BSP_DECREMENTER,
0,
(rtems_irq_enable)nullFunc,
(rtems_irq_disable)nullFunc,
(rtems_irq_is_enabled) nullFunc};
void Install_tm27_vector(void (*_handler)())
{
clockIrqData.hdl = _handler;
if (!BSP_install_rtems_irq_handler (&clockIrqData)) {
printk("Error installing clock interrupt handler!\n");
rtems_fatal_error_occurred(1);
}
}
#define Cause_tm27_intr() \
do { \
@@ -100,6 +109,7 @@ extern "C" {
_msr |= 0x8002; \
asm volatile( "mtmsr %0 ;" : "=r" (_msr) : "r" (_msr) ); \
} while (0)
#endif
/* Constants */
@@ -120,42 +130,25 @@ extern "C" {
* Information placed in the linkcmds file.
*/
extern int RAM_START;
extern int RAM_END;
extern int RAM_SIZE;
extern int PROM_START;
extern int PROM_END;
extern int PROM_SIZE;
extern int CLOCK_SPEED;
extern int end; /* last address in the program */
#define BSP_Convert_decrementer( _value ) ( (unsigned long long) _value )
/* functions */
void bsp_start( void );
void bsp_cleanup( void );
rtems_isr_entry set_vector( /* returns old vector */
rtems_isr_entry handler, /* isr routine */
rtems_vector_number vector, /* vector number */
int type /* RTEMS or RAW intr */
);
void DEBUG_puts( char *string );
void BSP_fatal_return( void );
void bsp_spurious_initialize( void );
void bsp_cleanup( void );
extern rtems_configuration_table BSP_Configuration; /* owned by BSP */
extern rtems_cpu_table Cpu_table; /* owned by BSP */
extern rtems_unsigned32 bsp_isr_level;
#endif /* ASM */
#ifdef __cplusplus

41
c/src/lib/libbsp/powerpc/psim/irq/Makefile.am Normal file
View File

@@ -0,0 +1,41 @@
##
## Makefile.am,v 1.5 2002/12/17 13:37:41 ralf Exp
##
include_bspdir = $(includedir)/bsp
C_FILES = irq.c irq_init.c
OBJS = $(C_FILES:%.c=$(ARCH)/%.$(OBJEXT))
include_bsp_HEADERS = irq.h
S_FILES = irq_asm.S
OBJS += $(S_FILES:%.S=$(ARCH)/%.$(OBJEXT))
include $(top_srcdir)/../../../../../../automake/compile.am
include $(top_srcdir)/../../../../../../automake/lib.am
$(PROJECT_INCLUDE)/bsp:
$(mkinstalldirs) $@
$(PROJECT_INCLUDE)/bsp/%.h: %.h
$(INSTALL_DATA) $< $@
PREINSTALL_FILES = $(PROJECT_INCLUDE)/bsp \
$(include_bsp_HEADERS:%=$(PROJECT_INCLUDE)/bsp/%)
#
# (OPTIONAL) Add local stuff here using +=
#
$(PGM): $(OBJS)
$(make-rel)
# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
all-local: $(PREINSTALL_FILES) $(ARCH) $(OBJS) $(PGM)
EXTRA_DIST = irq.c irq.h irq_asm.S irq_init.c
include $(top_srcdir)/../../../../../../automake/local.am

25
c/src/lib/libbsp/powerpc/psim/irq/irq.c
View File

@@ -85,6 +85,31 @@ static inline int is_processor_irq(const rtems_irq_symbolic_name irqLine)
* ------------------------ RTEMS Irq helper functions ----------------
*/
/*
* Caution : this function assumes the variable "internal_config"
* is already set and that the tables it contains are still valid
* and accessible.
*/
static void compute_i8259_masks_from_prio ()
{
int i;
int j;
/*
* Always mask at least current interrupt to prevent re-entrance
*/
for (i=BSP_ISA_IRQ_LOWEST_OFFSET; i < BSP_ISA_IRQ_LOWEST_OFFSET + BSP_ISA_IRQ_NUMBER; i++) {
* ((unsigned short*) &irq_mask_or_tbl[i]) = (1 << i);
for (j = BSP_ISA_IRQ_LOWEST_OFFSET; j < BSP_ISA_IRQ_LOWEST_OFFSET + BSP_ISA_IRQ_NUMBER; j++) {
/*
* Mask interrupts at i8259 level that have a lower priority
*/
if (internal_config->irqPrioTbl [i] > internal_config->irqPrioTbl [j]) {
* ((unsigned short*) &irq_mask_or_tbl[i]) |= (1 << j);
}
}
}
}
/*
* This function check that the value given for the irq line
* is valid.

2
c/src/lib/libbsp/powerpc/psim/irq/irq_asm.S
View File

@@ -16,7 +16,7 @@
* irq_asm.S,v 1.5.4.3 2003/09/04 18:45:20 joel Exp
*/
#include <rtems/asm.h>
#include <asm.h>
#include <rtems/score/cpu.h>
#include <bsp/vectors.h>
#include <libcpu/raw_exception.h>

20
c/src/lib/libbsp/powerpc/psim/start/Makefile.am
View File

@@ -2,7 +2,9 @@
## $Id$
##
S_FILES = start.S
VPATH = @srcdir@:@srcdir@/../../shared/start
S_FILES = start.S rtems_crti.S
S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.$(OBJEXT))
OBJS = $(S_O_FILES)
@@ -13,20 +15,22 @@ include $(top_srcdir)/../../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#
install-data-local: $(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).$(OBJEXT)
@$(mkinstalldirs) $(DESTDIR)$(bsplibdir)
$(INSTALL_DATA) $< $(DESTDIR)$(bsplibdir)
bsplib_DATA = $(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).$(OBJEXT)
bsplib_DATA += $(PROJECT_RELEASE)/lib/rtems_crti.$(OBJEXT)
$(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).$(OBJEXT): $(ARCH)/start.$(OBJEXT)
$(INSTALL_DATA) $< $@
$(PROJECT_RELEASE)/lib/rtems_crti.$(OBJEXT): $(ARCH)/rtems_crti.$(OBJEXT)
$(INSTALL_DATA) $< $@
TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).$(OBJEXT)
TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/rtems_crti.$(OBJEXT)
all-local: $(ARCH) $(OBJS) $(ARCH)/start.$(OBJEXT) $(TMPINSTALL_FILES)
all-local: $(ARCH) $(OBJS) $(ARCH)/start.$(OBJEXT) $(ARCH)/rtems_crti.$(OBJEXT) $(TMPINSTALL_FILES)
.PRECIOUS: $(ARCH)/start.$(OBJEXT)
$(OBJS): $(ARCH)
EXTRA_DIST = start.S
.PRECIOUS: $(ARCH)/start.$(OBJEXT) $(ARCH)/rtems_crti.$(OBJEXT)
include $(top_srcdir)/../../../../../../automake/local.am

10
c/src/lib/libbsp/powerpc/psim/start/start.S
View File

@@ -17,6 +17,9 @@
* $Id$
*/
#include <asm.h>
#include <rtems/score/cpu.h>
#include <libcpu/io.h>
#include "ppc-asm.h"
.file "startsim.s"
@@ -53,9 +56,14 @@ FUNC_NAME(__atexit): /* tell C's eabi-ctor's we have an atexit function */
.Lptr:
.long .LCTOC1-.Laddr
.globl __rtems_entry_point
.type __rtems_entry_point,@function
__rtems_entry_point:
#if 1
.globl _start
.type _start,@function
_start:
#endif
bl .Laddr /* get current address */
.Laddr:
mflr r4 /* real address of .Laddr */
@@ -64,6 +72,7 @@ _start:
lwz r4,.Ltable(r5) /* get linker's idea of where .Laddr is */
subf r4,r4,r5 /* calculate difference between where linked and current */
bl __eabi /* setup EABI and SYSV environment */
/* clear bss */
lwz r6,.Lbss_start(r5) /* calculate beginning of the BSS */
lwz r7,.Lend(r5) /* calculate end of the BSS */
@@ -100,6 +109,7 @@ _start:
la r5,environ@l(r5) /* environp */
li r4, 0 /* argv */
li r3, 0 /* argc */
/* Let her rip */
bl FUNC_NAME(boot_card)

4
c/src/lib/libbsp/powerpc/psim/startup/Makefile.am
View File

@@ -8,7 +8,7 @@ VPATH = @srcdir@:@srcdir@/../../../shared
PGM = $(ARCH)/startup.rel
C_FILES = bspclean.c bsplibc.c bsppost.c bspstart.c bootcard.c main.c sbrk.c \
setvec.c gnatinstallhandler.c
gnatinstallhandler.c
C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.$(OBJEXT))
OBJS = $(C_O_FILES)
@@ -38,6 +38,6 @@ all-local: $(ARCH) $(OBJS) $(PGM) $(TMPINSTALL_FILES)
.PRECIOUS: $(PGM)
EXTRA_DIST = bspclean.c bspstart.c device-tree linkcmds setvec.c
EXTRA_DIST = bspclean.c bspstart.c device-tree linkcmds
include $(top_srcdir)/../../../../../../automake/local.am

123
c/src/lib/libbsp/powerpc/psim/startup/bspstart.c
View File

@@ -16,37 +16,85 @@
#include <string.h>
#include <fcntl.h>
#include <bsp.h>
#include <bsp/irq.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>
#include <rtems/bspIo.h>
#include <libcpu/cpuIdent.h>
#include <libcpu/spr.h>
SPR_RW(SPRG0)
SPR_RW(SPRG1)
extern unsigned long __rtems_end[];
void initialize_exceptions(void);
/* On psim, each click of the decrementer register corresponds
* to 1 instruction. By setting this to 100, we are indicating
* that we are assuming it can execute 100 instructions per
* microsecond. This corresponds to sustaining 1 instruction
* per cycle at 100 Mhz. Whether this is a good guess or not
* is anyone's guess.
*/
extern int PSIM_INSTRUCTIONS_PER_MICROSECOND;
/*
* The original table from the application and our copy of it with
* some changes.
*/
extern rtems_configuration_table Configuration;
rtems_configuration_table BSP_Configuration;
rtems_cpu_table Cpu_table;
rtems_unsigned32 bsp_isr_level;
/*
* Tells us where to put the workspace in case remote debugger is present.
*/
#if 0
extern rtems_unsigned32 rdb_start;
extern uint32_t rdb_start;
#endif
/*
* PCI Bus Frequency
*/
unsigned int BSP_bus_frequency;
/*
* * Time base divisior (how many tick for 1 second).
* */
unsigned int BSP_time_base_divisor;
/*
* Use the shared implementations of the following routines
*/
void bsp_postdriver_hook(void);
void bsp_libc_init( void *, unsigned32, int );
void bsp_libc_init( void *, uint32_t, int );
/*
* system init stack and soft ir stack size
*/
#define INIT_STACK_SIZE 0x1000
#define INTR_STACK_SIZE CONFIGURE_INTERRUPT_STACK_MEMORY
void BSP_panic(char *s)
{
printk("%s PANIC %s\n",_RTEMS_version, s);
__asm__ __volatile ("sc");
}
void _BSP_Fatal_error(unsigned int v)
{
printk("%s PANIC ERROR %x\n",_RTEMS_version, v);
__asm__ __volatile ("sc");
}
/*
* bsp_pretasking_hook
@@ -58,10 +106,10 @@ void bsp_libc_init( void *, unsigned32, int );
void bsp_pretasking_hook(void)
{
extern int end;
rtems_unsigned32 heap_start;
rtems_unsigned32 heap_size;
uint32_t heap_start;
uint32_t heap_size;
heap_start = (rtems_unsigned32) &end;
heap_start = (uint32_t) &end;
if (heap_start & (CPU_ALIGNMENT-1))
heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
@@ -84,16 +132,14 @@ void bsp_pretasking_hook(void)
void bsp_start( void )
{
unsigned char *work_space_start;
unsigned char *work_space_start;
register uint32_t intrStack;
register uint32_t *intrStackPtr;
#if 0
/*
* Set MSR to show vectors at 0 XXX
/*
* Note we can not get CPU identification dynamically, so force current_ppc_cpu.
*/
_CPU_MSR_Value( msr_value );
msr_value &= ~PPC_MSR_EP;
_CPU_MSR_SET( msr_value );
#endif
current_ppc_cpu = PPC_PSIM;
/*
* Set up our hooks
@@ -118,15 +164,18 @@ void bsp_start( void )
Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
BSP_bus_frequency = (unsigned int)&PSIM_INSTRUCTIONS_PER_MICROSECOND;
BSP_time_base_divisor = 1;
/*
* The monitor likes the exception table to be at 0x0.
* The simulator likes the exception table to be at 0xfff00000.
*/
Cpu_table.exceptions_in_RAM = TRUE;
Cpu_table.exceptions_in_RAM = FALSE;
BSP_Configuration.work_space_size += 1024;
work_space_start =
work_space_start =
(unsigned char *)&RAM_END - BSP_Configuration.work_space_size;
if ( work_space_start <= (unsigned char *)&end ) {
@@ -136,4 +185,36 @@ void bsp_start( void )
BSP_Configuration.work_space_start = work_space_start;
/*
* Initialize the interrupt related settings
* SPRG1 = software managed IRQ stack
*
* This could be done latter (e.g in IRQ_INIT) but it helps to understand
* some settings below...
*/
intrStack = ((uint32_t) __rtems_end) +
INIT_STACK_SIZE + INTR_STACK_SIZE - CPU_MINIMUM_STACK_FRAME_SIZE;
/* make sure it's properly aligned */
intrStack &= ~(CPU_STACK_ALIGNMENT-1);
/* tag the bottom (T. Straumann 6/36/2001 <strauman@slac.stanford.edu>) */
intrStackPtr = (uint32_t*) intrStack;
*intrStackPtr = 0;
_write_SPRG1(intrStack);
/* signal them that we have fixed PR288 - eventually, this should go away */
_write_SPRG0(PPC_BSP_HAS_FIXED_PR288);
/*
* Initialize default raw exception hanlders. See vectors/vectors_init.c
*/
initialize_exceptions();
/*
* Initalize RTEMS IRQ system
*/
BSP_rtems_irq_mng_init(0);
}

22
c/src/lib/libbsp/powerpc/psim/startup/linkcmds
View File

@@ -16,7 +16,7 @@ OUTPUT_ARCH(powerpc)
ENTRY(_start)
/* Do we need any of these for elf?
__DYNAMIC = 0; */
PROVIDE (PSIM_INSTRUCTIONS_PER_MICROSECOND = 100);
PROVIDE (PSIM_INSTRUCTIONS_PER_MICROSECOND = 10000); /* 100); */
PROVIDE (CPU_PPC_CLICKS_PER_MS = 16667);
MEMORY
{
@@ -26,10 +26,10 @@ MEMORY
SECTIONS
{
.vectors 0xFFF00100 :
.entry_point_section :
{
*(.vectors)
} >EPROM
*(.entry_point_section)
} > EPROM
/* Read-only sections, merged into text segment: */
/* . = 0x40000 + SIZEOF_HEADERS; */
@@ -74,8 +74,15 @@ SECTIONS
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
} >RAM
.init : { _init = .; __init = .; *(.init) } >RAM
.fini : { _fini = .; __fini = .; *(.fini) } >RAM
.init :
{
KEEP (*(.init))
} >RAM =0
.fini :
{
_fini = .;
KEEP (*(.fini))
} >RAM =0
.rodata : { *(.rodata*) *(.gnu.linkonce.r*) } >RAM
.rodata1 : { *(.rodata1) } >RAM
.eh_frame : { *.(eh_frame) } >RAM
@@ -143,6 +150,8 @@ SECTIONS
PROVIDE (_GOT_END_ = .);
PROVIDE (__GOT_END__ = .);
.jcr : { KEEP (*(.jcr)) } > RAM
/* We want the small data sections together, so single-instruction offsets
can access them all, and initialized data all before uninitialized, so
we can shorten the on-disk segment size. */
@@ -170,6 +179,7 @@ SECTIONS
*(COMMON)
} >RAM
. = ALIGN(8) + 0x8000;
__rtems_end = . ;
PROVIDE(__stack = .);
PROVIDE(_end = .);
PROVIDE(end = .);

27
c/src/lib/libbsp/powerpc/psim/vectors/Makefile.am
View File

@@ -3,12 +3,17 @@
##
PGM = $(ARCH)/vectors.rel
VPATH = @srcdir@:@srcdir@/../console:@srcdir@/../../shared/vectors
S_FILES = align_h.S vectors.S
C_FILES = vectors_init.c
C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.$(OBJEXT))
H_FILES = ../../shared/vectors/vectors.h
S_FILES = vectors.S
S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.$(OBJEXT))
OBJS = $(S_O_FILES)
OBJS = $(S_O_FILES) $(C_O_FILES)
include $(top_srcdir)/../../../../../../automake/compile.am
include $(top_srcdir)/../../../../../../automake/lib.am
@@ -20,12 +25,20 @@ include $(top_srcdir)/../../../../../../automake/lib.am
$(PGM): $(OBJS)
$(make-rel)
# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
include_bspdir = $(includedir)/bsp
include_bsp_HEADERS = ../../shared/vectors/vectors.h
all-local: $(ARCH) $(OBJS) $(PGM)
$(PROJECT_INCLUDE)/bsp:
$(mkinstalldirs) $@
.PRECIOUS: $(PGM)
$(PROJECT_INCLUDE)/bsp/vectors.h: ../../shared/vectors/vectors.h
$(INSTALL_DATA) $< $@
EXTRA_DIST = README align_h.S vectors.S
TMPINSTALL_FILES += $(PROJECT_INCLUDE)
TMPINSTALL_FILES += $(PROJECT_INCLUDE)/bsp
TMPINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/vectors.h
all-local: $(ARCH) $(TMPINSTALL_FILES) $(OBJS)
include $(top_srcdir)/../../../../../../automake/force-preinstall.am
include $(top_srcdir)/../../../../../../automake/local.am

253
c/src/lib/libbsp/powerpc/psim/vectors/vectors.S
View File

@@ -1,123 +1,160 @@
/* vectors.s 1.1 - 95/12/04
/*
* (c) 1999, Eric Valette valette@crf.canon.fr
*
*
* This file contains the assembly code for the PowerPC
* interrupt vectors for RTEMS.
* exception veneers for RTEMS.
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
* vectors.S,v 1.3.4.1 2003/02/20 21:48:25 joel Exp
*/
#include <asm.h>
#include <rtems/score/cpu.h>
#include <bsp/vectors.h>
#define SYNC \
sync; \
isync
PUBLIC_VAR (__rtems_start)
.section .entry_point_section,"awx",@progbits
/*
* The issue with this file is getting it loaded at the right place.
* The first vector MUST be at address 0x????0100.
* How this is achieved is dependant on the tool chain.
*
* However the basic mechanism for ELF assemblers is to create a
* section called ".vectors", which will be loaded to an address
* between 0x????0000 and 0x????0100 (inclusive) via a link script.
*
* The basic mechanism for XCOFF assemblers is to place it in the
* normal text section, and arrange for this file to be located
* at an appropriate position on the linker command line.
*
* The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the
* offset from 0x????0000 to the first location in the file. This
* will usually be 0x0000 or 0x0100.
* Entry point information used by bootloader code
*/
SYM (__rtems_start):
.long __rtems_entry_point
#include <bsp.h>
#include "asm.h"
#ifndef PPC_VECTOR_FILE_BASE
#error "PPC_VECTOR_FILE_BASE is not defined."
#endif
/* Where this file will be loaded */
.set file_base, PPC_VECTOR_FILE_BASE
/* Offset to store reg 0 */
.set IP_LINK, 0
#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)
.set IP_0, (IP_LINK + 56)
#else
.set IP_0, (IP_LINK + 8)
#endif
.set IP_2, (IP_0 + 4)
.set IP_3, (IP_2 + 4)
.set IP_4, (IP_3 + 4)
.set IP_5, (IP_4 + 4)
.set IP_6, (IP_5 + 4)
/*
* end of special Entry point section
*/
.text
.p2align 5
PUBLIC_VAR(default_exception_vector_code_prolog)
SYM (default_exception_vector_code_prolog):
/*
* let room for exception frame
*/
stwu r1, - (EXCEPTION_FRAME_END)(r1)
stw r3, GPR3_OFFSET(r1)
/* R2 should never change (EABI: pointer to .sdata2) - we
* save it nevertheless..
*/
stw r2, GPR2_OFFSET(r1)
mflr r3
stw r3, EXC_LR_OFFSET(r1)
bl 0f
0: /*
* r3 = exception vector entry point
* (256 * vector number) + few instructions
*/
mflr r3
/*
* r3 = r3 >> 8 = vector
*/
srwi r3,r3,8
ba push_normalized_frame
.set IP_7, (IP_6 + 4)
.set IP_8, (IP_7 + 4)
.set IP_9, (IP_8 + 4)
.set IP_10, (IP_9 + 4)
PUBLIC_VAR (default_exception_vector_code_prolog_size)
.set IP_11, (IP_10 + 4)
.set IP_12, (IP_11 + 4)
.set IP_13, (IP_12 + 4)
.set IP_28, (IP_13 + 4)
default_exception_vector_code_prolog_size= . - default_exception_vector_code_prolog
.set IP_29, (IP_28 + 4)
.set IP_30, (IP_29 + 4)
.set IP_31, (IP_30 + 4)
.set IP_CR, (IP_31 + 4)
.set IP_CTR, (IP_CR + 4)
.set IP_XER, (IP_CTR + 4)
.set IP_LR, (IP_XER + 4)
.set IP_PC, (IP_LR + 4)
.set IP_MSR, (IP_PC + 4)
.set IP_END, (IP_MSR + 16)
.p2align 5
PUBLIC_VAR (push_normalized_frame)
SYM (push_normalized_frame):
stw r3, EXCEPTION_NUMBER_OFFSET(r1)
stw r0, GPR0_OFFSET(r1)
mfsrr0 r3
stw r3, SRR0_FRAME_OFFSET(r1)
mfsrr1 r3
stw r3, SRR1_FRAME_OFFSET(r1)
/*
* Save general purpose registers
* Already saved in prolog : R1, R2, R3, LR.
* Saved a few line above : R0
*
* Manual says that "stmw" instruction may be slower than
* series of individual "stw" but who cares about performance
* for the DEFAULT exception handler?
*/
stmw r4, GPR4_OFFSET(r1) /* save R4->R31 */
/* Vector offsets */
.set begin_vector,0xFFF00000
.set crit_vector,0xFFF00100
.set mach_vector,0xFFF00200
.set prot_vector,0xFFF00300
.set ext_vector,0xFFF00500
.set align_vector,0xFFF00600
.set prog_vector,0xFFF00700
.set dec_vector,0xFFF00900
.set sys_vector,0xFFF00C00
.set pit_vector,0xFFF01000
.set fit_vector,0xFFF01010
.set wadt_vector,0xFFF01020
.set debug_vector,0xFFF02000
/* Go to the right section */
#if PPC_ASM == PPC_ASM_ELF
.section .vectors,"awx",@progbits
#elif PPC_ASM == PPC_ASM_XCOFF
.csect .text[PR]
#endif
PUBLIC_VAR (__vectors)
SYM (__vectors):
mfcr r31
stw r31, EXC_CR_OFFSET(r1)
mfctr r30
stw r30, EXC_CTR_OFFSET(r1)
mfxer r28
stw r28, EXC_XER_OFFSET(r1)
mfmsr r28
stw r28, EXC_MSR_OFFSET(r1)
mfdar r28
stw r28, EXC_DAR_OFFSET(r1)
/*
* compute SP at exception entry
*/
addi r3, r1, EXCEPTION_FRAME_END
/*
* store it at the right place
*/
stw r3, GPR1_OFFSET(r1)
/*
* Enable data and instruction address translation, exception nesting
*/
mfmsr r3
ori r3,r3, MSR_RI /* | MSR_IR | MSR_DR */
mtmsr r3
SYNC
/* Decrementer interrupt */
.org dec_vector - file_base
#if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27)
#if (PPC_HAS_FPU)
stwu r1, -(20*4 + 18*8 + IP_END)(r1)
#else
stwu r1, -(20*4 + IP_END)(r1)
#endif
#else
stwu r1, -(IP_END)(r1)
#endif
stw r0, IP_0(r1)
/*
* Call C exception handler
*/
/*
* store the execption frame address in r3 (first param)
*/
addi r3, r1, 0x8
/*
* globalExceptHdl(r3)
*/
addis r4, 0, globalExceptHdl@ha
lwz r5, globalExceptHdl@l(r4)
mtlr r5
blrl
/*
* Restore registers status
*/
lwz r31, EXC_CR_OFFSET(r1)
mtcr r31
lwz r30, EXC_CTR_OFFSET(r1)
mtctr r30
lwz r29, EXC_LR_OFFSET(r1)
mtlr r29
lwz r28, EXC_XER_OFFSET(r1)
mtxer r28
li r0, PPC_IRQ_DECREMENTER
b PROC (_ISR_Handler)
lmw r4, GPR4_OFFSET(r1)
lwz r2, GPR2_OFFSET(r1)
lwz r0, GPR0_OFFSET(r1)
/*
* Disable data and instruction translation. Make path non recoverable...
*/
mfmsr r3
xori r3, r3, MSR_RI | MSR_IR | MSR_DR
mtmsr r3
SYNC
/*
* Restore rfi related settings
*/
lwz r3, SRR1_FRAME_OFFSET(r1)
mtsrr1 r3
lwz r3, SRR0_FRAME_OFFSET(r1)
mtsrr0 r3
lwz r3, GPR3_OFFSET(r1)
addi r1,r1, EXCEPTION_FRAME_END
SYNC
rfi

22
c/src/lib/libbsp/powerpc/psim/wrapup/Makefile.am
View File

@@ -2,25 +2,19 @@
## $Id$
##
include $(top_srcdir)/../../../../../../automake/compile.am
include $(top_srcdir)/../../../../../../automake/lib.am
if HAS_MP
GENERIC_MP_REL_PIECES = shmdr
endif
GENERIC_PIECES = $(GENERIC_MP_REL_PIECES)
if HAS_MP
BSP_MP_O_PIECES = shmsupp
endif
BSP_PIECES = startup clock console timer vectors $(BSP_MP_O_PIECES)
BSP_PIECES = startup clock console irq vectors
# bummer; have to use $foreach since % pattern subst rules only replace 1x
OBJS = $(foreach piece, $(BSP_PIECES), $(wildcard ../$(piece)/$(ARCH)/*.$(OBJEXT))) \
OBJS = $(foreach piece, $(BSP_PIECES), ../$(piece)/$(ARCH)/*.$(OBJEXT)) \
$(wildcard ../../../../libcpu/$(RTEMS_CPU)/shared/*/$(ARCH)/*.$(OBJEXT)) \
$(wildcard ../../../../libcpu/$(RTEMS_CPU)/mpc6xx/*/$(ARCH)/*.$(OBJEXT)) \
../@exceptions@/$(ARCH)/rtems-cpu.rel \
$(foreach piece, $(GENERIC_PIECES), ../../../$(piece)/$(ARCH)/$(piece).rel)
$(wildcard ../../../../libcpu/$(RTEMS_CPU)/$(RTEMS_CPU_MODEL)/*/$(ARCH)/*.$(OBJEXT))
LIB = $(ARCH)/libbsp.a
include $(top_srcdir)/../../../../../../automake/compile.am
include $(top_srcdir)/../../../../../../automake/lib.am
#
# (OPTIONAL) Add local stuff here using +=
#