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libbase: use __builtin_setjmp and __builtin_longjmp
This commit is contained in:
Sebastien Bourdeauducq
parent
503a2f00b5
commit
14d53526be
4 changed files with 4 additions and 166 deletions
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@ -5,12 +5,10 @@
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extern "C" {
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#endif
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#define _JBLEN 19
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typedef void *jmp_buf[5];
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typedef int jmp_buf[_JBLEN];
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int setjmp(jmp_buf env);
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void longjmp(jmp_buf env, int val);
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#define setjmp __builtin_setjmp
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#define longjmp __builtin_longjmp
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#ifdef __cplusplus
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}
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@ -1,7 +1,7 @@
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MSCDIR=../..
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include $(MSCDIR)/software/common.mak
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OBJECTS=setjmp-$(CPU).o exception.o libc.o errno.o crc16.o crc32.o console.o system.o id.o uart.o time.o qsort.o strtod.o
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OBJECTS=exception.o libc.o errno.o crc16.o crc32.o console.o system.o id.o uart.o time.o qsort.o strtod.o
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all: crt0-$(CPU).o libbase.a libbase-nofloat.a
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@ -1,94 +0,0 @@
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/*
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* setjmp/longjmp for LatticeMico32.
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* Contributed by Jon Beniston <jon@beniston.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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.section .text
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.align 4
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.globl setjmp
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.type setjmp,@function
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.globl longjmp
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.type longjmp,@function
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/* setjmp: save all callee saves into jmp_buf
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r1 - Address of jmp_buf
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*/
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setjmp:
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sw (r1+0), r11
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sw (r1+4), r12
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sw (r1+8), r13
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sw (r1+12), r14
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sw (r1+16), r15
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sw (r1+20), r16
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sw (r1+24), r17
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sw (r1+28), r18
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sw (r1+32), r19
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sw (r1+36), r20
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sw (r1+40), r21
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sw (r1+44), r22
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sw (r1+48), r23
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sw (r1+52), r24
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sw (r1+56), r25
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sw (r1+60), gp
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sw (r1+64), fp
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sw (r1+68), sp
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sw (r1+72), ra
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mvi r1, 0
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ret
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/* longjmp: restore all callee saves from jmp_buf
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r1 - Address of jmb_buf
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r2 - Value to return with
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*/
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.global longjmp
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.type longjmp,@function
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.align 4
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longjmp:
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lw r11, (r1+0)
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lw r12, (r1+4)
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lw r13, (r1+8)
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lw r14, (r1+12)
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lw r15, (r1+16)
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lw r16, (r1+20)
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lw r17, (r1+24)
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lw r18, (r1+28)
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lw r19, (r1+32)
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lw r20, (r1+36)
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lw r21, (r1+40)
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lw r22, (r1+44)
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lw r23, (r1+48)
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lw r24, (r1+52)
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lw r25, (r1+56)
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lw gp, (r1+60)
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lw fp, (r1+64)
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lw sp, (r1+68)
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lw ra, (r1+72)
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mv r1, r2
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ret
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@ -1,66 +0,0 @@
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/* setjmp.S. Implementation of setjmp.
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Copyright (C) 2010, Embecosm Limited <info@embecosm.com>
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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Licensed under 2-clause BSD.
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*/
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/* -------------------------------------------------------------------------- */
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/*!setjmp
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All processor state is saved in the buffer provided. We need not save r0
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(it will always be zero) and we need not save r11 (it will always be
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overridden here, and in longjmp).
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@todo We should prefer to save and restore the status register, but this is
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not directly possible in user code. There is some merit in code to
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set the flag, since in compiled C code, that might be expected to hold
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a value. We leave a space for this information for future enhancement.
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@param[out] env(r3) A buffer to save all the current processor state.
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@return zero.*/
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/* -------------------------------------------------------------------------- */
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.align 4
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.global setjmp
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.type setjmp,@function
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setjmp:
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l.sw 4(r3),r1 /* Slot 0 saved for flag in future */
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l.sw 8(r3),r2
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l.sw 12(r3),r3
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l.sw 16(r3),r4
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l.sw 20(r3),r5
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l.sw 24(r3),r6
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l.sw 28(r3),r7
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l.sw 32(r3),r8
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l.sw 36(r3),r9
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l.sw 40(r3),r10 /* Skip r11 */
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l.sw 44(r3),r12
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l.sw 48(r3),r13
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l.sw 52(r3),r14
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l.sw 56(r3),r15
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l.sw 60(r3),r16
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l.sw 64(r3),r17
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l.sw 68(r3),r18
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l.sw 72(r3),r19
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l.sw 76(r3),r20
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l.sw 80(r3),r21
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l.sw 84(r3),r22
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l.sw 88(r3),r23
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l.sw 92(r3),r24
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l.sw 96(r3),r25
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l.sw 100(r3),r26
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l.sw 104(r3),r27
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l.sw 108(r3),r28
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l.sw 112(r3),r29
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l.sw 116(r3),r30
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l.sw 120(r3),r31
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l.jr r9
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l.addi r11,r0,0 /* Zero result */
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.size setjmp, .-setjmp
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