| /* |
| 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 | R13 | R14 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | * |
| * ------------------------------------------------- * |
| * | 160 | 164 | 168 | 172 | 176 | 180 | 184 | 188 | * |
| * ------------------------------------------------- * |
| * | R15 | R16 | R17 | R18 | R19 | R20 | R21 | R22 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | * |
| * ------------------------------------------------- * |
| * | 192 | 196 | 200 | 204 | 208 | 212 | 216 | 220 | * |
| * ------------------------------------------------- * |
| * | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 | * |
| * ------------------------------------------------- * |
| * ------------------------------------------------- * |
| * | 56 | 57 | 58 | 59 | | * |
| * ------------------------------------------------- * |
| * | 224 | 228 | 232 | 236 | | * |
| * ------------------------------------------------- * |
| * | R31 | CR | LR | PC | | * |
| * ------------------------------------------------- * |
| * * |
| *******************************************************/ |
| |
| .text |
| .globl _jump_fcontext |
| .align 2 |
| _jump_fcontext: |
| ; reserve space on stack |
| subi r1, r1, 240 |
| |
| stw r13, 152(r1) ; save R13 |
| stw r14, 156(r1) ; save R14 |
| stw r15, 160(r1) ; save R15 |
| stw r16, 164(r1) ; save R16 |
| stw r17, 168(r1) ; save R17 |
| stw r18, 172(r1) ; save R18 |
| stw r19, 176(r1) ; save R19 |
| stw r20, 180(r1) ; save R20 |
| stw r21, 184(r1) ; save R21 |
| stw r22, 188(r1) ; save R22 |
| stw r23, 192(r1) ; save R23 |
| stw r24, 196(r1) ; save R24 |
| stw r25, 200(r1) ; save R25 |
| stw r26, 204(r1) ; save R26 |
| stw r27, 208(r1) ; save R27 |
| stw r28, 212(r1) ; save R28 |
| stw r29, 216(r1) ; save R29 |
| stw r30, 220(r1) ; save R30 |
| stw r31, 224(r1) ; save R31 |
| |
| ; save CR |
| mfcr r0 |
| stw r0, 228(r1) |
| ; save LR |
| mflr r0 |
| stw r0, 232(r1) |
| ; save LR as PC |
| stw r0, 236(r1) |
| |
| ; test if fpu env should be preserved |
| cmpwi cr7, r6, 0 |
| beq cr7, l1 |
| |
| 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 |
| |
| l1: |
| ; store RSP (pointing to context-data) in R3 |
| stw 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, l2 |
| |
| 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 |
| |
| l2: |
| lwz r13, 152(r1) ; restore R13 |
| lwz r14, 156(r1) ; restore R14 |
| lwz r15, 160(r1) ; restore R15 |
| lwz r16, 164(r1) ; restore R16 |
| lwz r17, 168(r1) ; restore R17 |
| lwz r18, 172(r1) ; restore R18 |
| lwz r19, 176(r1) ; restore R19 |
| lwz r20, 180(r1) ; restore R20 |
| lwz r21, 184(r1) ; restore R21 |
| lwz r22, 188(r1) ; restore R22 |
| lwz r23, 192(r1) ; restore R23 |
| lwz r24, 196(r1) ; restore R24 |
| lwz r25, 200(r1) ; restore R25 |
| lwz r26, 204(r1) ; restore R26 |
| lwz r27, 208(r1) ; restore R27 |
| lwz r28, 212(r1) ; restore R28 |
| lwz r29, 216(r1) ; restore R29 |
| lwz r30, 220(r1) ; restore R30 |
| lwz r31, 224(r1) ; restore R31 |
| |
| ; restore CR |
| lwz r0, 228(r1) |
| mtcr r0 |
| ; restore LR |
| lwz r0, 232(r1) |
| mtlr r0 |
| |
| ; load PC |
| lwz r0, 236(r1) |
| ; restore CTR |
| mtctr r0 |
| |
| ; adjust stack |
| addi r1, r1, 240 |
| |
| ; use third arg as return value after jump |
| ; use third arg as first arg in context function |
| mr r3, r5 |
| |
| ; jump to context |
| bctr |
