| /* |
| 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 | * |
| * ------------------------------------------------- * |
| * | 0 | 4 | 8 | 12 | 16 | 20 | 24 | 28 | * |
| * ------------------------------------------------- * |
| * | F14 | F15 | F16 | F17 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | * |
| * ------------------------------------------------- * |
| * | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | * |
| * ------------------------------------------------- * |
| * | F18 | F19 | F20 | F21 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | * |
| * ------------------------------------------------- * |
| * | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | * |
| * ------------------------------------------------- * |
| * | F22 | F23 | F24 | F25 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | * |
| * ------------------------------------------------- * |
| * | 96 | 100 | 104 | 108 | 112 | 116 | 120 | 124 | * |
| * ------------------------------------------------- * |
| * | F26 | F27 | F28 | F29 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | * |
| * ------------------------------------------------- * |
| * | 128 | 132 | 136 | 140 | 144 | 148 | 152 | 156 | * |
| * ------------------------------------------------- * |
| * | F30 | F31 | fpscr | TOC | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | * |
| * ------------------------------------------------- * |
| * | 160 | 164 | 168 | 172 | 176 | 180 | 184 | 188 | * |
| * ------------------------------------------------- * |
| * | R14 | R15 | R16 | R17 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | * |
| * ------------------------------------------------- * |
| * | 192 | 196 | 200 | 204 | 208 | 212 | 216 | 220 | * |
| * ------------------------------------------------- * |
| * | R18 | R19 | R20 | R21 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | * |
| * ------------------------------------------------- * |
| * | 224 | 228 | 232 | 236 | 240 | 244 | 248 | 252 | * |
| * ------------------------------------------------- * |
| * | R22 | R23 | R24 | R25 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | * |
| * ------------------------------------------------- * |
| * | 256 | 260 | 264 | 268 | 272 | 276 | 280 | 284 | * |
| * ------------------------------------------------- * |
| * | R26 | R27 | R28 | R29 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | * |
| * ------------------------------------------------- * |
| * | 288 | 292 | 296 | 300 | 304 | 308 | 312 | 316 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | R30 | R31 | CR | LR | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 80 | 81 | | * |
| * ------------------------------------------------- * |
| * | 320 | 324 | | * |
| * ------------------------------------------------- * |
| * | PC | | * |
| * ------------------------------------------------- * |
| * * |
| *******************************************************/ |
| |
| .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 |
| # reserve space on stack |
| subi %r1, %r1, 328 |
| |
| #if _CALL_ELF != 2 |
| std %r2, 152(%r1) # save TOC |
| #endif |
| std %r14, 160(%r1) # save R14 |
| std %r15, 168(%r1) # save R15 |
| std %r16, 176(%r1) # save R16 |
| std %r17, 184(%r1) # save R17 |
| std %r18, 192(%r1) # save R18 |
| std %r19, 200(%r1) # save R19 |
| std %r20, 208(%r1) # save R20 |
| std %r21, 216(%r1) # save R21 |
| std %r22, 224(%r1) # save R22 |
| std %r23, 232(%r1) # save R23 |
| std %r24, 240(%r1) # save R24 |
| std %r25, 248(%r1) # save R25 |
| std %r26, 256(%r1) # save R26 |
| std %r27, 264(%r1) # save R27 |
| std %r28, 272(%r1) # save R28 |
| std %r29, 280(%r1) # save R29 |
| std %r30, 288(%r1) # save R30 |
| std %r31, 296(%r1) # save R31 |
| |
| # save CR |
| mfcr %r0 |
| std %r0, 304(%r1) |
| # save LR |
| mflr %r0 |
| std %r0, 312(%r1) |
| # save LR as PC |
| std %r0, 320(%r1) |
| |
| # test if fpu env should be preserved |
| cmpwi cr7, %r6, 0 |
| beq cr7, 1f |
| |
| stfd %f14, 0(%r1) # save F14 |
| stfd %f15, 8(%r1) # save F15 |
| stfd %f16, 16(%r1) # save F16 |
| stfd %f17, 24(%r1) # save F17 |
| stfd %f18, 32(%r1) # save F18 |
| stfd %f19, 40(%r1) # save F19 |
| stfd %f20, 48(%r1) # save F20 |
| stfd %f21, 56(%r1) # save F21 |
| stfd %f22, 64(%r1) # save F22 |
| stfd %f23, 72(%r1) # save F23 |
| stfd %f24, 80(%r1) # save F24 |
| stfd %f25, 88(%r1) # save F25 |
| stfd %f26, 96(%r1) # save F26 |
| stfd %f27, 104(%r1) # save F27 |
| stfd %f28, 112(%r1) # save F28 |
| stfd %f29, 120(%r1) # save F29 |
| stfd %f30, 128(%r1) # save F30 |
| stfd %f31, 136(%r1) # save F31 |
| mffs %f0 # load FPSCR |
| stfd %f0, 144(%r1) # save FPSCR |
| |
| 1: |
| # store RSP (pointing to context-data) in R3 |
| std %r1, 0(%r3) |
| |
| # restore RSP (pointing to context-data) from R4 |
| mr %r1, %r4 |
| |
| # test if fpu env should be preserved |
| cmpwi cr7, %r6, 0 |
| beq cr7, 2f |
| |
| lfd %f14, 0(%r1) # restore F14 |
| lfd %f15, 8(%r1) # restore F15 |
| lfd %f16, 16(%r1) # restore F16 |
| lfd %f17, 24(%r1) # restore F17 |
| lfd %f18, 32(%r1) # restore F18 |
| lfd %f19, 40(%r1) # restore F19 |
| lfd %f20, 48(%r1) # restore F20 |
| lfd %f21, 56(%r1) # restore F21 |
| lfd %f22, 64(%r1) # restore F22 |
| lfd %f23, 72(%r1) # restore F23 |
| lfd %f24, 80(%r1) # restore F24 |
| lfd %f25, 88(%r1) # restore F25 |
| lfd %f26, 96(%r1) # restore F26 |
| lfd %f27, 104(%r1) # restore F27 |
| lfd %f28, 112(%r1) # restore F28 |
| lfd %f29, 120(%r1) # restore F29 |
| lfd %f30, 128(%r1) # restore F30 |
| lfd %f31, 136(%r1) # restore F31 |
| lfd %f0, 144(%r1) # load FPSCR |
| mtfsf 0xff, %f0 # restore FPSCR |
| |
| 2: |
| #if _CALL_ELF != 2 |
| ld %r2, 152(%r1) # restore TOC |
| #endif |
| ld %r14, 160(%r1) # restore R14 |
| ld %r15, 168(%r1) # restore R15 |
| ld %r16, 176(%r1) # restore R16 |
| ld %r17, 184(%r1) # restore R17 |
| ld %r18, 192(%r1) # restore R18 |
| ld %r19, 200(%r1) # restore R19 |
| ld %r20, 208(%r1) # restore R20 |
| ld %r21, 216(%r1) # restore R21 |
| ld %r22, 224(%r1) # restore R22 |
| ld %r23, 232(%r1) # restore R23 |
| ld %r24, 240(%r1) # restore R24 |
| ld %r25, 248(%r1) # restore R25 |
| ld %r26, 256(%r1) # restore R26 |
| ld %r27, 264(%r1) # restore R27 |
| ld %r28, 272(%r1) # restore R28 |
| ld %r29, 280(%r1) # restore R29 |
| ld %r30, 288(%r1) # restore R30 |
| ld %r31, 296(%r1) # restore R31 |
| |
| # restore CR |
| ld %r0, 304(%r1) |
| mtcr %r0 |
| # restore LR |
| ld %r0, 312(%r1) |
| mtlr %r0 |
| |
| # load PC |
| ld %r12, 320(%r1) |
| # restore CTR |
| mtctr %r12 |
| |
| # adjust stack |
| addi %r1, %r1, 328 |
| |
| # use third arg as return value after jump |
| # use third arg as first arg in context function |
| mr %r3, %r5 |
| |
| # jump to context |
| bctr |
| #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 |
