/* 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 | R18 | R19 | R20 | R21 | R22 | * * ------------------------------------------------------------- * * ------------------------------------------------------------- * * | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | * * ------------------------------------------------------------- * * | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 68 | 72 | 76 | * * ------------------------------------------------------------- * * | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 | R31 | SP | * * ------------------------------------------------------------- * * ------------------------------------------------------------- * * | 20 | 21 | 22 | | * * ------------------------------------------------------------- * * | 80 | 84 | 88 | | * * ------------------------------------------------------------- * * | CR | LR | PC | | * * ------------------------------------------------------------- * * ------------------------------------------------------------- * * | 23 | 24 | 25 | | * * ------------------------------------------------------------- * * | 92 | 96 | 100 | | * * ------------------------------------------------------------- * * | sp | size|| | * * ------------------------------------------------------------- * * ------------------------------------------------------------- * * | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | * * ------------------------------------------------------------- * * | 104 | 108 | 112 | 116 | 120 | 124 | 128 | 132 | 136 | 140 | * * ------------------------------------------------------------- * * | F14 | F15 | F16 | F17 | F18 | * * ------------------------------------------------------------- * * ------------------------------------------------------------- * * | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | * * ------------------------------------------------------------- * * | 144 | 148 | 152 | 156 | 160 | 164 | 168 | 172 | 176 | 180 | * * ------------------------------------------------------------- * * | F19 | F20 | F21 | F22 | F23 | * * ------------------------------------------------------------- * * ------------------------------------------------------------- * * | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | * * ------------------------------------------------------------- * * | 184 | 188 | 192 | 196 | 200 | 204 | 208 | 212 | 216 | 220 | * * ------------------------------------------------------------- * * | F24 | F25 | F26 | F27 | F28 | * * ------------------------------------------------------------- * * ------------------------------------------------------------- * * | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | | * * ------------------------------------------------------------- * * | 224 | 228 | 232 | 236 | 240 | 244 | 248 | 252 | | * * ------------------------------------------------------------- * * | F29 | F30 | F31 | fpscr | | * * ------------------------------------------------------------- * * * * *****************************************************************/ .text .globl jump_fcontext .align 2 .type jump_fcontext,@function jump_fcontext: stw %r13, 0(%r3) # save R13 stw %r14, 4(%r3) # save R14 stw %r15, 8(%r3) # save R15 stw %r16, 12(%r3) # save R16 stw %r17, 16(%r3) # save R17 stw %r18, 20(%r3) # save R18 stw %r19, 24(%r3) # save R19 stw %r20, 28(%r3) # save R20 stw %r21, 32(%r3) # save R21 stw %r22, 36(%r3) # save R22 stw %r23, 40(%r3) # save R23 stw %r24, 44(%r3) # save R24 stw %r25, 48(%r3) # save R25 stw %r26, 52(%r3) # save R26 stw %r27, 56(%r3) # save R27 stw %r28, 60(%r3) # save R28 stw %r29, 64(%r3) # save R29 stw %r30, 68(%r3) # save R30 stw %r31, 72(%r3) # save R31 stw %r1, 76(%r3) # save SP mfcr %r0 # load CR stw %r0, 80(%r3) # save CR mflr %r0 # load LR stw %r0, 84(%r3) # save LR stw %r0, 88(%r3) # save LR as PC cmpwi cr7, %r6, 0 # test if fpu env should be preserved beq cr7, 1f stfd %f14, 104(%r3) # save F14 stfd %f15, 112(%r3) # save F15 stfd %f16, 120(%r3) # save F16 stfd %f17, 128(%r3) # save F17 stfd %f18, 136(%r3) # save F18 stfd %f19, 144(%r3) # save F19 stfd %f20, 152(%r3) # save F20 stfd %f21, 160(%r3) # save F21 stfd %f22, 168(%r3) # save F22 stfd %f23, 176(%r3) # save F23 stfd %f24, 184(%r3) # save F24 stfd %f25, 192(%r3) # save F25 stfd %f26, 200(%r3) # save F26 stfd %f27, 208(%r3) # save F27 stfd %f28, 216(%r3) # save F28 stfd %f29, 224(%r3) # save F29 stfd %f30, 232(%r3) # save F30 stfd %f31, 240(%r3) # save F31 mffs %f0 # load FPSCR stfd %f0, 248(%r3) # save FPSCR lfd %f14, 104(%r4) # restore F14 lfd %f15, 112(%r4) # restore F15 lfd %f16, 120(%r4) # restore F16 lfd %f17, 128(%r4) # restore F17 lfd %f18, 136(%r4) # restore F18 lfd %f19, 144(%r4) # restore F19 lfd %f20, 152(%r4) # restore F20 lfd %f21, 160(%r4) # restore F21 lfd %f22, 168(%r4) # restore F22 lfd %f23, 176(%r4) # restore F23 lfd %f24, 184(%r4) # restore F24 lfd %f25, 192(%r4) # restore F25 lfd %f26, 200(%r4) # restore F26 lfd %f27, 208(%r4) # restore F27 lfd %f28, 216(%r4) # restore F28 lfd %f29, 224(%r4) # restore F29 lfd %f30, 232(%r4) # restore F30 lfd %f31, 240(%r4) # restore F31 lfd %f0, 248(%r4) # load FPSCR mtfsf 0xff, %f0 # restore FPSCR 1: lwz %r13, 0(%r4) # restore R13 lwz %r14, 4(%r4) # restore R14 lwz %r15, 8(%r4) # restore R15 lwz %r16, 12(%r4) # restore R16 lwz %r17, 16(%r4) # restore R17 lwz %r18, 20(%r4) # restore R18 lwz %r19, 24(%r4) # restore R19 lwz %r20, 28(%r4) # restore R20 lwz %r21, 32(%r4) # restore R21 lwz %r22, 36(%r4) # restore R22 lwz %r23, 40(%r4) # restore R23 lwz %r24, 44(%r4) # restore R24 lwz %r25, 48(%r4) # restore R25 lwz %r26, 52(%r4) # restore R26 lwz %r27, 56(%r4) # restore R27 lwz %r28, 60(%r4) # restore R28 lwz %r29, 64(%r4) # restore R29 lwz %r30, 68(%r4) # restore R30 lwz %r31, 72(%r4) # restore R31 lwz %r1, 76(%r4) # restore SP lwz %r0, 80(%r4) # load CR mtcr %r0 # restore CR lwz %r0, 84(%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 lwz %r0, 88(%r4) # load PC mtctr %r0 # restore CTR bctr # jump to context .size jump_fcontext, .-jump_fcontext