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    Contents of /trunk/mkinitrd-magellan/klibc/usr/klibc/arch/s390/setjmp.S

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    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
    File size: 1141 byte(s) 
    -import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
    1 #
    2 # arch/s390/setjmp.S
    3 #
    4 # setjmp/longjmp for the s390 architecture
    5 #
    6
    7 .text
    8 .align 4
    9 .globl setjmp
    10 .type setjmp, @function
    11
    12 #ifndef __s390x__
    13
    14 setjmp:
    15 stm %r6,%r15,0(%r2) # save all general registers
    16 std %f4,40(%r2) # save fp registers f4 and f6
    17 std %f6,48(%r2)
    18 lhi %r2,0 # return 0
    19 br %r14
    20
    21 .size setjmp,.-setjmp
    22
    23 .text
    24 .align 4
    25 .globl longjmp
    26 .type longjmp, @function
    27 longjmp:
    28 lr %r1,%r2 # jmp_buf
    29 lr %r2,%r3 # return value
    30 ld %f6,48(%r1) # restore all saved registers
    31 ld %f4,40(%r1)
    32 lm %r6,%r15,0(%r1)
    33 br %r14 # return to restored address
    34
    35 .size longjmp,.-longjmp
    36
    37 #else
    38
    39 setjmp:
    40 stmg %r6,%r15,0(%r2) # save all general registers
    41 std %f1,80(%r2) # save fp registers f4 and f6
    42 std %f3,88(%r2)
    43 std %f5,96(%r2)
    44 std %f7,104(%r2)
    45 lghi %r2,0 # return 0
    46 br %r14
    47
    48 .size setjmp,.-setjmp
    49
    50 .text
    51 .align 4
    52 .globl longjmp
    53 .type longjmp, @function
    54 longjmp:
    55 lgr %r1,%r2 # jmp_buf
    56 lgr %r2,%r3 # return value
    57 ld %f7,104(%r1) # restore all saved registers
    58 ld %f5,96(%r1)
    59 ld %f3,88(%r1)
    60 ld %f1,80(%r1)
    61 lmg %r6,%r15,0(%r1)
    62 br %r14 # return to restored address
    63
    64 .size longjmp,.-longjmp
    65
    66 #endif