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or1k: Implement context validate and context volatile clobber functions.

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score/cpu/or1k: Add two new assembly functions: _CPU_Context_validate
and _CPU_Context_volatile_clobber; their implementation follows
corresponding ARM functions.
This commit is contained in:
Hesham ALMatary
2014-09-02 09:29:08 -05:00
committed by Joel Sherrill
parent 23e8f3dd03
commit 305357eda5
4 changed files with 225 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cpukit/score/cpu/or1k/Makefile.am
+2
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@@ -24,6 +24,8 @@ libscorecpu_a_SOURCES =
libscorecpu_a_SOURCES += cpu.c
libscorecpu_a_SOURCES += or1k-context-switch.S
libscorecpu_a_SOURCES += or1k-context-initialize.c
libscorecpu_a_SOURCES += or1k-context-validate.S
libscorecpu_a_SOURCES += or1k-context-volatile-clobber.S
libscorecpu_a_SOURCES += or1k-exception-default.c
libscorecpu_a_SOURCES += or1k-exception-frame-print.c
libscorecpu_a_SOURCES += or1k-exception-handler-low.S
cpukit/score/cpu/or1k/or1k-context-validate.S
+185
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@@ -0,0 +1,185 @@
/*
* COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary@gmail.com>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/asm.h>
#include <rtems/score/cpu.h>
.section .text
PUBLIC(_CPU_Context_validate)
SYM(_CPU_Context_validate):
l.addi r1, r1, -140
l.sw 8(r1), r2
l.sw 12(r1), r3
l.sw 16(r1), r4
l.sw 20(r1), r5
l.sw 24(r1), r6
l.sw 28(r1), r7
l.sw 32(r1), r8
l.sw 36(r1), r9
l.sw 40(r1), r10
l.sw 44(r1), r11
l.sw 48(r1), r12
l.sw 52(r1), r13
l.sw 56(r1), r14
l.sw 60(r1), r15
l.sw 64(r1), r16
l.sw 68(r1), r17
l.sw 72(r1), r18
l.sw 76(r1), r19
l.sw 80(r1), r20
l.sw 84(r1), r21
l.sw 88(r1), r22
l.sw 92(r1), r23
l.sw 96(r1), r24
l.sw 100(r1), r25
l.sw 104(r1), r26
l.sw 108(r1), r27
l.sw 112(r1), r28
l.sw 116(r1), r29
l.sw 120(r1), r30
l.sw 124(r1), r31
/* Fill */
/* r13 is used for temporary values */
l.add r13, r0, r0
/* r31 contains the stack pointer */
l.add r31, r1, r0
.macro fill_register reg
l.addi r13, r13, 1
l.addi \reg, r13, 0
.endm
fill_register r2
fill_register r3
fill_register r4
fill_register r5
fill_register r6
fill_register r7
fill_register r8
fill_register r9
fill_register r10
fill_register r11
fill_register r12
fill_register r13
fill_register r14
fill_register r15
fill_register r16
fill_register r17
fill_register r18
fill_register r19
fill_register r20
fill_register r21
fill_register r22
fill_register r23
fill_register r24
fill_register r25
fill_register r26
fill_register r27
fill_register r28
fill_register r29
fill_register r30
fill_register r31
/* Check */
check:
.macro check_register reg
l.addi r13, r13, 1
l.sfne \reg, r13
l.bf restore
l.nop
.endm
l.sfne r31, r1
l.bf restore
l.nop
l.addi r13, r0, 0
check_register r2
check_register r3
check_register r4
check_register r5
check_register r6
check_register r7
check_register r8
check_register r9
check_register r10
check_register r11
check_register r12
check_register r13
check_register r14
check_register r15
check_register r16
check_register r17
check_register r18
check_register r19
check_register r20
check_register r21
check_register r22
check_register r23
check_register r24
check_register r25
check_register r26
check_register r27
check_register r28
check_register r29
check_register r30
check_register r31
l.j check
l.nop
/* Restore */
restore:
l.lwz r2, 8(r1)
l.lwz r3, 12(r1)
l.lwz r4, 16(r1)
l.lwz r5, 20(r1)
l.lwz r6, 24(r1)
l.lwz r7, 28(r1)
l.lwz r8, 32(r1)
l.lwz r9, 36(r1)
l.lwz r10, 40(r1)
l.lwz r11, 44(r1)
l.lwz r12, 48(r1)
l.lwz r13, 52(r1)
l.lwz r14, 56(r1)
l.lwz r15, 60(r1)
l.lwz r16, 64(r1)
l.lwz r17, 68(r1)
l.lwz r18, 72(r1)
l.lwz r19, 76(r1)
l.lwz r20, 80(r1)
l.lwz r21, 84(r1)
l.lwz r22, 88(r1)
l.lwz r23, 92(r1)
l.lwz r24, 96(r1)
l.lwz r25, 100(r1)
l.lwz r26, 104(r1)
l.lwz r27, 108(r1)
l.lwz r28, 112(r1)
l.lwz r29, 116(r1)
l.lwz r30, 120(r1)
l.lwz r31, 124(r1)
l.addi r1, r1, 140
l.jr r9
l.nop
cpukit/score/cpu/or1k/or1k-context-volatile-clobber.S
+35
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@@ -0,0 +1,35 @@
/*
* COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary@gmail.com>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/asm.h>
.section .text
PUBLIC(_CPU_Context_volatile_clobber)
SYM(_CPU_Context_volatile_clobber):
.macro clobber_register reg
l.addi r0, r0, -1
l.addi \reg, r0, 0
.endm
clobber_register r3
clobber_register r4
clobber_register r5
clobber_register r6
clobber_register r7
clobber_register r8
clobber_register r13
clobber_register r31
l.jr r9
l.nop
cpukit/score/cpu/or1k/preinstall.am
+3 -3
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@@ -5,14 +5,14 @@ $(srcdir)/preinstall.am: Makefile.am
$(AMPOLISH3) $(srcdir)/Makefile.am > $(srcdir)/preinstall.am
endif
PREINSTALL_DIRS =
DISTCLEANFILES += $(PREINSTALL_DIRS)
all-am: $(PREINSTALL_FILES)
PREINSTALL_FILES =
CLEANFILES += $(PREINSTALL_FILES)
PREINSTALL_DIRS =
DISTCLEANFILES += $(PREINSTALL_DIRS)
$(PROJECT_INCLUDE)/rtems/$(dirstamp):
@$(MKDIR_P) $(PROJECT_INCLUDE)/rtems
@: > $(PROJECT_INCLUDE)/rtems/$(dirstamp)