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Rev 183 → Rev 182

/gnu-src/newlib-1.17.0/newlib/libc/machine/or32/setjmp.S
1,66 → 1,24
/* setjmp.S. Implementation fo setjmp and longjmp.
/* Simple setjmp/longjmp for the OpenRISC 1000 (OR32 ISA).
Damjan Lampret, OpenCores.org, Aug 15 2000. */
 
Copyright (C) 2000, Damjan Lampret
Copyright (C) 2004, Jacob Bower
Copyright (C) 2010, Embecosm Limited <info@embecosm.com>
/* Until OR1K Arch is fixed, we just save entire register file. Should be fixed eventually. */
 
Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
 
This file is part of Newlib.
 
The original work by Jacob Bower is provided as-is without any kind of
warranty. Use it at your own risk!
 
All subsequent work is bound by version 3 of the GPL as follows.
 
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your option)
any later version.
 
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
 
You should have received a copy of the GNU General Public License along
with this program. If not, see <http://www.gnu.org/licenses/>. */
/* -------------------------------------------------------------------------- */
/* This program is commented throughout in a fashion suitable for processing
with Doxygen. */
/* -------------------------------------------------------------------------- */
 
/* -------------------------------------------------------------------------- */
/*!_setjmp
 
All processor state is saved in the buffer provided. We need not save r0
(it will always be zero) and we need not save r11 (it will always be
overridden here, and in _longjmp).
 
@todo We should prefer to save and restore the status register, but this is
not directly possible in user code. There is some merit in code to
set the flag, since in compiled C code, that might be expected to hold
a value. We leave a space for this information for future enhancement.
 
@param[out] env(r3) A buffer to save all the current processor state.
 
@return zero.
/* -------------------------------------------------------------------------- */
.align 4
.global _setjmp
.type _setjmp,@function
_setjmp:
l.sw 4(r3),r1 /* Slot 0 saved for flag in future */
l.sw 8(r3),r2
l.sw 12(r3),r3
l.sw 16(r3),r4
l.sw 20(r3),r5
l.sw 24(r3),r6
l.sw 28(r3),r7
l.sw 32(r3),r8
l.sw 36(r3),r9
l.sw 40(r3),r10 /* Skip r11 */
.proc setjmp
.global setjmp
.extern setjmp
setjmp:
l.sw 0(r3),r1
l.sw 4(r3),r2
l.sw 8(r3),r3
l.sw 12(r3),r4
l.sw 16(r3),r5
l.sw 20(r3),r6
l.sw 24(r3),r7
l.sw 28(r3),r8
l.sw 32(r3),r9
l.sw 36(r3),r10
l.sw 40(r3),r11
l.sw 44(r3),r12
l.sw 48(r3),r13
l.sw 52(r3),r14
81,84 → 39,61
l.sw 112(r3),r29
l.sw 116(r3),r30
l.sw 120(r3),r31
/*
l.addi r4,r0,SPR_SR
l.mfsr r4,r4
l.sw 124(r3),r4
*/
l.jr r11
l.addi r3,r0,0
.endproc setjmp
 
l.jr r9
l.addi r11,r0,0 /* Zero result */
 
.size _setjmp, .-_setjmp
 
/* -------------------------------------------------------------------------- */
/*!_longjmp
 
All processor state is restored from the buffer provided. We need not restore
r0 (it will always be zero) and we need not restore r11 (it will always be
overridden here).
 
We need to take some care, since we cannot restore r3 until all other
registers are restore, and the value of r4 must first be saved in r11,
modifying it if its value is zero.
 
@todo We should prefer to save and restore the status register, but this is
not directly possible in user code. There is some merit in code to
set the flag, since in compiled C code, that might be expected to hold
a value. We leave a space for this information for future enhancement.
 
@param[out] env(r3) A buffer from which to restore all the current
processor state.
@param[in] val(r4) A value to return
 
@return val, unless val is zero, in which case 1 is returned.
/* -------------------------------------------------------------------------- */
.align 4
.global _longjmp
.type _longjmp,@function
_longjmp:
/* Sort out the return value */
.proc longjmp
.global longjmp
longjmp:
l.lwz r1,0(r3)
l.lwz r2,4(r3)
l.lwz r5,16(r3)
l.lwz r6,20(r3)
l.lwz r7,24(r3)
l.lwz r8,28(r3)
l.lwz r9,32(r3)
l.lwz r10,36(r3)
l.lwz r11,40(r3)
l.lwz r12,44(r3)
l.lwz r13,48(r3)
l.lwz r14,52(r3)
l.lwz r15,56(r3)
l.lwz r16,60(r3)
l.lwz r17,64(r3)
l.lwz r18,68(r3)
l.lwz r19,72(r3)
l.lwz r20,76(r3)
l.lwz r21,80(r3)
l.lwz r22,84(r3)
l.lwz r23,88(r3)
l.lwz r24,92(r3)
l.lwz r25,96(r3)
l.lwz r26,100(r3)
l.lwz r27,104(r3)
l.lwz r28,108(r3)
l.lwz r29,112(r3)
l.lwz r30,116(r3)
l.lwz r31,120(r3)
/*
l.lwz r5,124(r3)
l.addi r3,r0,SPR_ESR_BASE
l.mtsr r3,r5
*/
l.lwz r5,16(r3)
l.sfne r4,r0
l.bf 1f
l.nop
 
l.j 2f
l.addi r11,r0,1 /* 1 as result */
 
1: l.addi r11,r4,0 /* val as result */
 
/* Restore all the other registers, leaving r3 to last. */
2: l.lwz r31,120(r3)
l.lwz r30,116(r3)
l.lwz r29,112(r3)
l.lwz r28,108(r3)
l.lwz r27,104(r3)
l.lwz r26,100(r3)
l.lwz r25,96(r3)
l.lwz r24,92(r3)
l.lwz r23,88(r3)
l.lwz r22,84(r3)
l.lwz r21,80(r3)
l.lwz r20,76(r3)
l.lwz r19,72(r3)
l.lwz r18,68(r3)
l.lwz r17,64(r3)
l.lwz r16,60(r3)
l.lwz r15,56(r3)
l.lwz r14,52(r3)
l.lwz r13,48(r3)
l.lwz r12,44(r3)
l.lwz r10,40(r3) /* Omit r11 */
l.lwz r9,36(r3)
l.lwz r8,32(r3)
l.lwz r7,28(r3)
l.lwz r6,24(r3)
l.lwz r5,20(r3)
l.lwz r4,16(r3)
l.lwz r2,8(r3) /* Skip r3 */
l.lwz r1,4(r3) /* Slot 0 saved for flag in future */
l.lwz r3,12(r3) /* Now safe */
l.addi r3,r0,1
/* Result is already in r11. Having restored r9, it will appear as
though we have returned from the earlier call to _setjmp. The
non-zero result gives it away though. */
l.jr r9
1: l.addi r3,r4,0
l.jr r11
l.nop
 
.size _longjmp, .-_longjmp
.endproc longjmp
/gnu-src/newlib-1.17.0/newlib/libc/machine/or32/configure.in
1,31 → 1,4
# configure.in: Autoconf file for OR32 setjmp
 
# Copyright (C) 2000, Damjan Lampret
# Copyright (C) 2004, Jacob Bower
# Copyright (C) 2010, Embecosm Limited <info@embecosm.com>
 
# Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
 
# This file is part of Newlib.
 
# The original work by Jacob Bower is provided as-is without any kind of
# warranty. Use it at your own risk!
 
# All subsequent work is bound by version 3 of the GPL as follows.
 
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3 of the License, or (at your option)
# any later version.
 
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
 
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
# -----------------------------------------------------------------------------
dnl This is the newlib/libc/machine/arm configure.in file.
dnl Process this file with autoconf to produce a configure script.
 
AC_PREREQ(2.59)
/gnu-src/newlib-1.17.0/newlib/libc/machine/or32/Makefile.am
1,34 → 1,5
# Makefile.am: Automake file for OR32 setjmp
 
# Copyright (C) 2000, Damjan Lampret
# Copyright (C) 2004, Jacob Bower
# Copyright (C) 2010, Embecosm Limited <info@embecosm.com>
 
# Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
 
# This file is part of Newlib.
 
# The original work by Jacob Bower is provided as-is without any kind of
# warranty. Use it at your own risk!
 
# All subsequent work is bound by version 3 of the GPL as follows.
 
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3 of the License, or (at your option)
# any later version.
 
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
 
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
# -----------------------------------------------------------------------------
## Process this file with automake to generate Makefile.in
 
# This is boilerplate.
AUTOMAKE_OPTIONS = cygnus
 
INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
/gnu-src/newlib-1.17.0/newlib/libc/include/machine/setjmp.h
246,7 → 246,6
#endif /* __m32c__ */
 
#if defined(__or32__) || defined(__or1k__) || defined(__or16__) || defined(__OR32__) || defined(__OR1K__)
/* Enough space for all regs except r0 and r11 and the status register */
#define _JBLEN 31
#define _JBTYPE unsigned long
#endif
/gnu-src/newlib-1.17.0/newlib/ChangeLog
1,11 → 1,5
2010-07-07 Jeremy Bennett <jeremy.bennett@embecosm.com>
 
* libc/machine/or32/setjmp.S: Rewritten - old code could never
have worked.
* libc/machine/or32/bits: Deleted.
 
2010-07-07 Jeremy Bennett <jeremy.bennett@embecosm.com>
 
* configure.host: Updated for OpenRISC to use namespace clean
functions.
 
/gnu-src/newlib-1.17.0/libgloss/or32/crt0.S
1,4 → 1,4
/* crt0.S. C Runtime startup file.
/* Makefile.in. Autoconf input makefile.
 
Copyright (C) 2004, Jacob Bower
Copyright (C) 2010, Embecosm Limited <info@embecosm.com>

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