diff options
Diffstat (limited to 'newlib/libc/machine/rl78/setjmp.S')
| -rw-r--r-- | newlib/libc/machine/rl78/setjmp.S | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/newlib/libc/machine/rl78/setjmp.S b/newlib/libc/machine/rl78/setjmp.S deleted file mode 100644 index 951b4ee7b..000000000 --- a/newlib/libc/machine/rl78/setjmp.S +++ /dev/null @@ -1,150 +0,0 @@ -/* - -Copyright (c) 2011 Red Hat Incorporated. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - The name of Red Hat Incorporated may not be used to endorse - or promote products derived from this software without specific - prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY -DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -*/ - -; clobberable -r8 = 0xffef0 -r9 = 0xffef1 -r10 = 0xffef2 -r11 = 0xffef3 -r12 = 0xffef4 -r13 = 0xffef5 -r14 = 0xffef6 -r15 = 0xffef7 -; preserved -r16 = 0xffee8 -r17 = 0xffee9 -r18 = 0xffeea -r19 = 0xffeeb -r20 = 0xffeec -r21 = 0xffeed -r22 = 0xffeee -r23 = 0xffeef - -/* The jump buffer has the following structure: - R0 .. R23 3*8 bytes - SP 2 bytes - ES 1 byte - CS 1 byte - PC 4 bytes -*/ - -#define SAVEB(ofs,reg) mov a,reg | mov [hl+ofs],a -#define SAVE(ofs,reg) movw ax,reg | movw [hl+ofs],ax - - .global _setjmp - .type _setjmp, @function -_setjmp: - ;; R8 = setjmp (jmp_buf *[sp+4].w) - ;; must return zero !! - push ax - push hl - push ax - movw ax, [sp+10] - movw hl, ax - pop ax - movw [hl], ax - SAVE (2, bc) - SAVE (4, de) - pop ax - movw [hl+6], ax - SAVE (8, r8) - SAVE (10, r10) - SAVE (12, r12) - SAVE (14, r14) - SAVE (16, r16) - SAVE (18, r18) - SAVE (20, r20) - SAVE (22, r22) - - ;; The sp we have now includes one more pushed reg, plus $PC - movw ax, sp - addw ax, #6 - movw [hl+24], ax - - SAVEB (26, es) - SAVEB (27, cs) - SAVE (28, [sp+2]) - SAVE (30, [sp+4]) - - clrw ax - movw r8, ax - pop ax - ret - - .size _setjmp, . - _setjmp - -#define LOADB(ofs,reg) mov a,[hl+ofs] | mov reg,a -#define LOAD(ofs,reg) movw ax,[hl+ofs] | movw reg,ax -#define PUSH(ofs) movw ax,[hl+ofs] | push ax - - .global _longjmp - .type _longjmp, @function -_longjmp: - ;; noreturn longjmp (jmp_buf *[sp+4].w, int [sp+6].w) - movw ax, [sp+6] - cmpw ax,#0 - sknz - onew ax - movw r8, ax - - movw ax, [sp+4] - movw hl, ax - movw ax, [hl+24] - movw sp, ax ; this is the *new* stack - - PUSH (30) ; high half of PC - PUSH (28) ; low half of PC - PUSH (6) ; HL - PUSH (0) ; AX - - LOAD (2, bc) - LOAD (4, de) - - LOAD (10, r10) - LOAD (12, r12) - LOAD (14, r14) - LOAD (16, r16) - LOAD (18, r18) - LOAD (20, r20) - LOAD (22, r22) - - LOADB (26, es) - LOADB (27, cs) - - pop ax - pop hl - - - ret ; pops PC (4 bytes) - - .size _longjmp, . - _longjmp - |