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/*
Copyright Oliver Kowalke 2009.
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
*/
/*******************************************************************
* *
* ------------------------------------------------------------- *
* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | *
* ------------------------------------------------------------- *
* | 0 | 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | *
* ------------------------------------------------------------- *
* | R13 | R14 | R15 | R16 | R17 | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | *
* ------------------------------------------------------------- *
* | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 68 | 72 | 76 | *
* ------------------------------------------------------------- *
* | R18 | R19 | R20 | R21 | R22 | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | *
* ------------------------------------------------------------- *
* | 80 | 84 | 88 | 92 | 96 | 100 | 104 | 108 | 112 | 116 | *
* ------------------------------------------------------------- *
* | R23 | R24 | R25 | R26 | R27 | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | *
* ------------------------------------------------------------- *
* | 120 | 124 | 128 | 132 | 136 | 140 | 144 | 148 | 152 | 156 | *
* ------------------------------------------------------------- *
* | R28 | R29 | R30 | R31 | SP | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 40 | 41 | 42 | 43 | 44 | 45 | | *
* ------------------------------------------------------------- *
* | 160 | 164 | 168 | 172 | 176 | 180 | | *
* ------------------------------------------------------------- *
* | CR | LR | PC | | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 46 | 47 | 48 | 49 | | *
* ------------------------------------------------------------- *
* | 184 | 188 | 192 | 196 | | *
* ------------------------------------------------------------- *
* | sp | size | | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | *
* ------------------------------------------------------------- *
* | 200 | 204 | 208 | 212 | 216 | 220 | 224 | 228 | 232 | 236 | *
* ------------------------------------------------------------- *
* | F14 | F15 | F16 | F17 | F18 | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | *
* ------------------------------------------------------------- *
* | 240 | 244 | 248 | 252 | 256 | 260 | 264 | 268 | 272 | 276 | *
* ------------------------------------------------------------- *
* | F19 | F20 | F21 | F22 | F23 | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | *
* ------------------------------------------------------------- *
* | 280 | 284 | 288 | 292 | 296 | 300 | 304 | 308 | 312 | 316 | *
* ------------------------------------------------------------- *
* | F24 | F25 | F26 | F27 | F28 | *
* ------------------------------------------------------------- *
* ------------------------------------------------------------- *
* | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | | *
* ------------------------------------------------------------- *
* | 320 | 324 | 328 | 332 | 336 | 340 | 344 | 348 | | *
* ------------------------------------------------------------- *
* | F29 | F30 | F31 | fpscr | | *
* ------------------------------------------------------------- *
* *
* *****************************************************************/
.globl jump_fcontext
#if _CALL_ELF == 2
.text
.align 2
jump_fcontext:
addis %r2, %r12, .TOC.-jump_fcontext@ha
addi %r2, %r2, .TOC.-jump_fcontext@l
.localentry jump_fcontext, . - jump_fcontext
#else
.section ".opd","aw"
.align 3
jump_fcontext:
# ifdef _CALL_LINUX
.quad .L.jump_fcontext,.TOC.@tocbase,0
.type jump_fcontext,@function
.text
.align 2
.L.jump_fcontext:
# else
.hidden .jump_fcontext
.globl .jump_fcontext
.quad .jump_fcontext,.TOC.@tocbase,0
.size jump_fcontext,24
.type .jump_fcontext,@function
.text
.align 2
.jump_fcontext:
# endif
#endif
std %r13, 0(%r3) # save R13
std %r14, 8(%r3) # save R14
std %r15, 16(%r3) # save R15
std %r16, 24(%r3) # save R16
std %r17, 32(%r3) # save R17
std %r18, 40(%r3) # save R18
std %r19, 48(%r3) # save R19
std %r20, 56(%r3) # save R20
std %r21, 64(%r3) # save R21
std %r22, 72(%r3) # save R22
std %r23, 80(%r3) # save R23
std %r24, 88(%r3) # save R24
std %r25, 96(%r3) # save R25
std %r26, 104(%r3) # save R26
std %r27, 112(%r3) # save R27
std %r28, 120(%r3) # save R28
std %r29, 128(%r3) # save R29
std %r30, 136(%r3) # save R30
std %r31, 144(%r3) # save R31
std %r1, 152(%r3) # save SP
mfcr %r0 # load CR
std %r0, 160(%r3) # save CR
mflr %r0 # load LR
std %r0, 168(%r3) # save LR
std %r0, 176(%r3) # save LR as PC
cmpwi cr7, %r6, 0 # test if fpu env should be preserved
beq cr7, 1f
stfd %f14, 200(%r3) # save F14
stfd %f15, 208(%r3) # save F15
stfd %f16, 216(%r3) # save F16
stfd %f17, 224(%r3) # save F17
stfd %f18, 232(%r3) # save F18
stfd %f19, 240(%r3) # save F19
stfd %f20, 248(%r3) # save F20
stfd %f21, 256(%r3) # save F21
stfd %f22, 264(%r3) # save F22
stfd %f23, 272(%r3) # save F23
stfd %f24, 280(%r3) # save F24
stfd %f25, 288(%r3) # save F25
stfd %f26, 296(%r3) # save F26
stfd %f27, 304(%r3) # save F27
stfd %f28, 312(%r3) # save F28
stfd %f29, 320(%r3) # save F29
stfd %f30, 328(%r3) # save F30
stfd %f31, 336(%r3) # save F31
mffs %f0 # load FPSCR
stfd %f0, 344(%r3) # save FPSCR
lfd %f14, 200(%r4) # restore F14
lfd %f15, 208(%r4) # restore F15
lfd %f16, 216(%r4) # restore F16
lfd %f17, 224(%r4) # restore F17
lfd %f18, 232(%r4) # restore F18
lfd %f19, 240(%r4) # restore F19
lfd %f20, 248(%r4) # restore F20
lfd %f21, 256(%r4) # restore F21
lfd %f22, 264(%r4) # restore F22
lfd %f23, 272(%r4) # restore F23
lfd %f24, 280(%r4) # restore F24
lfd %f25, 288(%r4) # restore F25
lfd %f26, 296(%r4) # restore F26
lfd %f27, 304(%r4) # restore F27
lfd %f28, 312(%r4) # restore F28
lfd %f29, 320(%r4) # restore F29
lfd %f30, 328(%r4) # restore F30
lfd %f31, 336(%r4) # restore F31
lfd %f0, 344(%r4) # load FPSCR
mtfsf 0xff, %f0 # restore FPSCR
1:
ld %r13, 0(%r4) # restore R13
ld %r14, 8(%r4) # restore R14
ld %r15, 16(%r4) # restore R15
ld %r16, 24(%r4) # restore R16
ld %r17, 32(%r4) # restore R17
ld %r18, 40(%r4) # restore R18
ld %r19, 48(%r4) # restore R19
ld %r20, 56(%r4) # restore R20
ld %r21, 64(%r4) # restore R21
ld %r22, 72(%r4) # restore R22
ld %r23, 80(%r4) # restore R23
ld %r24, 88(%r4) # restore R24
ld %r25, 96(%r4) # restore R25
ld %r26, 104(%r4) # restore R26
ld %r27, 112(%r4) # restore R27
ld %r28, 120(%r4) # restore R28
ld %r29, 128(%r4) # restore R29
ld %r30, 136(%r4) # restore r30
ld %r31, 144(%r4) # restore r31
ld %r1, 152(%r4) # restore SP
ld %r0, 160(%r4) # load CR
mtcr %r0 # restore CR
ld %r0, 168(%r4) # load LR
mtlr %r0 # restore LR
mr %r3, %r5 # use third arg as return value after jump
# and as first arg in context function
ld %r12, 176(%r4) # load PC
mtctr %r12 # restore CTR
bctr # jump to context
#if _CALL_ELF == 2
.size jump_fcontext, .-jump_fcontext
#else
# ifdef _CALL_LINUX
.size .jump_fcontext, .-.L.jump_fcontext
# else
.size .jump_fcontext, .-.jump_fcontext
# endif
#endif
/* Mark that we don't need executable stack. */
.section .note.GNU-stack,"",%progbits
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