setjmp_ppc.S

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    1 /*      $FreeBSD$  */
    2 /*      from:   NetBSD: setjmp.S,v 1.1 1998/01/27 15:13:12 sakamoto Exp $  */
    3 /*      from:   OpenBSD: setjmp.S,v 1.2 1996/12/28 06:22:18 rahnds Exp  */
    4 /* kernel version of this file, does not have signal goop */
    5 /* int setjmp(jmp_buf env) */
    6 
    7 #define _ASM
    8 #include <asm/types.h>
    9 
   10 #ifdef __powerpc64__
   11 #if !defined(PPC64_ELF_ABI_v2) && !defined(PPC64_ELF_ABI_v1)
   12 #if defined(_CALL_ELF) && _CALL_ELF == 2
   13 #define PPC64_ELF_ABI_v2
   14 #endif /* _CALL_ELF */
   15 #endif /* PPC64_ELF_ABI_ */
   16 #endif /* __powerpc64__ */
   17 
   18 #ifdef __powerpc64__
   19 #define LD_REG  ld
   20 #define ST_REG  std
   21 #define REGWIDTH 8
   22 #else
   23 #define LD_REG  lwz
   24 #define ST_REG  stw
   25 #define REGWIDTH 4
   26 #endif /* __powerpc64__ */
   27 
   28 #define JMP_r1  1*REGWIDTH
   29 #define JMP_r2  2*REGWIDTH
   30 #define JMP_r14 3*REGWIDTH
   31 #define JMP_r15 4*REGWIDTH
   32 #define JMP_r16 5*REGWIDTH
   33 #define JMP_r17 6*REGWIDTH
   34 #define JMP_r18 7*REGWIDTH
   35 #define JMP_r19 8*REGWIDTH
   36 #define JMP_r20 9*REGWIDTH
   37 #define JMP_r21 10*REGWIDTH
   38 #define JMP_r22 11*REGWIDTH
   39 #define JMP_r23 12*REGWIDTH
   40 #define JMP_r24 13*REGWIDTH
   41 #define JMP_r25 14*REGWIDTH
   42 #define JMP_r26 15*REGWIDTH
   43 #define JMP_r27 16*REGWIDTH
   44 #define JMP_r28 17*REGWIDTH
   45 #define JMP_r29 18*REGWIDTH
   46 #define JMP_r30 19*REGWIDTH
   47 #define JMP_r31 20*REGWIDTH
   48 #define JMP_lr  21*REGWIDTH
   49 #define JMP_cr  22*REGWIDTH
   50 #define JMP_ctr 23*REGWIDTH
   51 #define JMP_xer 24*REGWIDTH
   52 
   53 #ifdef __powerpc64__
   54 #ifdef PPC64_ELF_ABI_v2
   55 
   56 #define ENTRY(name) \
   57         .balign 2 ; \
   58         .type name,@function; \
   59         .weak name; \
   60 name:
   61 
   62 #else /* PPC64_ELF_ABI_v1 */
   63 
   64 #define XGLUE(a,b) a##b
   65 #define GLUE(a,b) XGLUE(a,b)
   66 #define ENTRY(name) \
   67         .balign 2 ; \
   68         .weak name; \
   69         .weak GLUE(.,name); \
   70         .pushsection ".opd","aw"; \
   71 name: \
   72         .quad GLUE(.,name); \
   73         .quad .TOC.@tocbase; \
   74         .quad 0; \
   75         .popsection; \
   76         .type GLUE(.,name),@function; \
   77 GLUE(.,name):
   78 
   79 #endif /* PPC64_ELF_ABI_v2 */
   80 
   81 #else /* 32-bit */
   82 
   83 #define ENTRY(name) \
   84         .text; \
   85         .p2align 4; \
   86         .weak name; \
   87         .type name,@function; \
   88 name:
   89 
   90 #endif /* __powerpc64__ */
   91 
   92 
   93 ENTRY(setjmp)
   94         ST_REG 31, JMP_r31(3)
   95         /* r1, r2, r14-r30 */
   96         ST_REG 1,  JMP_r1 (3)
   97         ST_REG 2,  JMP_r2 (3)
   98         ST_REG 14, JMP_r14(3)
   99         ST_REG 15, JMP_r15(3)
  100         ST_REG 16, JMP_r16(3)
  101         ST_REG 17, JMP_r17(3)
  102         ST_REG 18, JMP_r18(3)
  103         ST_REG 19, JMP_r19(3)
  104         ST_REG 20, JMP_r20(3)
  105         ST_REG 21, JMP_r21(3)
  106         ST_REG 22, JMP_r22(3)
  107         ST_REG 23, JMP_r23(3)
  108         ST_REG 24, JMP_r24(3)
  109         ST_REG 25, JMP_r25(3)
  110         ST_REG 26, JMP_r26(3)
  111         ST_REG 27, JMP_r27(3)
  112         ST_REG 28, JMP_r28(3)
  113         ST_REG 29, JMP_r29(3)
  114         ST_REG 30, JMP_r30(3)
  115         /* cr, lr, ctr, xer */
  116         mfcr 0
  117         ST_REG 0, JMP_cr(3)
  118         mflr 0
  119         ST_REG 0, JMP_lr(3)
  120         mfctr 0
  121         ST_REG 0, JMP_ctr(3)
  122         mfxer 0
  123         ST_REG 0, JMP_xer(3)
  124         /* f14-f31, fpscr */
  125         li 3, 0
  126         blr
  127 
  128 ENTRY(longjmp)
  129         LD_REG 31, JMP_r31(3)
  130         /* r1, r2, r14-r30 */
  131         LD_REG 1,  JMP_r1 (3)
  132         LD_REG 2,  JMP_r2 (3)
  133         LD_REG 14, JMP_r14(3)
  134         LD_REG 15, JMP_r15(3)
  135         LD_REG 16, JMP_r16(3)
  136         LD_REG 17, JMP_r17(3)
  137         LD_REG 18, JMP_r18(3)
  138         LD_REG 19, JMP_r19(3)
  139         LD_REG 20, JMP_r20(3)
  140         LD_REG 21, JMP_r21(3)
  141         LD_REG 22, JMP_r22(3)
  142         LD_REG 23, JMP_r23(3)
  143         LD_REG 24, JMP_r24(3)
  144         LD_REG 25, JMP_r25(3)
  145         LD_REG 26, JMP_r26(3)
  146         LD_REG 27, JMP_r27(3)
  147         LD_REG 28, JMP_r28(3)
  148         LD_REG 29, JMP_r29(3)
  149         LD_REG 30, JMP_r30(3)
  150         /* cr, lr, ctr, xer */
  151         LD_REG 0, JMP_cr(3)
  152         mtcr 0
  153         LD_REG 0, JMP_lr(3)
  154         mtlr 0
  155         LD_REG 0, JMP_ctr(3)
  156         mtctr 0
  157         LD_REG 0, JMP_xer(3)
  158         mtxer 0
  159         /* f14-f31, fpscr */
  160         mr 3, 4
  161         blr
  162 
  163 #ifdef __ELF__
  164 .section .note.GNU-stack,"",%progbits
  165 #endif

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/module/lua/setjmp/setjmp_ppc.S

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/module/lua/setjmp/setjmp_ppc.S