202 lines
7.4 KiB
ArmAsm
202 lines
7.4 KiB
ArmAsm
/*
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Copyright Oliver Kowalke 2009.
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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*/
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/******************************************************
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* *
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* ------------------------------------------------- *
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* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | *
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* ------------------------------------------------- *
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* | 0 | 4 | 8 | 12 | 16 | 20 | 24 | 28 | *
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* ------------------------------------------------- *
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* | F14 | F15 | F16 | F17 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | *
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* ------------------------------------------------- *
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* | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | *
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* ------------------------------------------------- *
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* | F18 | F19 | F20 | F21 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | *
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* ------------------------------------------------- *
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* | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | *
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* ------------------------------------------------- *
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* | F22 | F23 | F24 | F25 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | *
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* ------------------------------------------------- *
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* | 96 | 100 | 104 | 108 | 112 | 116 | 120 | 124 | *
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* ------------------------------------------------- *
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* | F26 | F27 | F28 | F29 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | *
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* ------------------------------------------------- *
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* | 128 | 132 | 136 | 140 | 144 | 148 | 152 | 156 | *
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* ------------------------------------------------- *
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* | F30 | F31 | fpscr | R13 | R14 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | *
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* ------------------------------------------------- *
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* | 160 | 164 | 168 | 172 | 176 | 180 | 184 | 188 | *
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* ------------------------------------------------- *
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* | R15 | R16 | R17 | R18 | R19 | R20 | R21 | R22 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | *
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* ------------------------------------------------- *
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* | 192 | 196 | 200 | 204 | 208 | 212 | 216 | 220 | *
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* ------------------------------------------------- *
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* | R23 | R24 | R25 | R26 | R27 | R28 | R29 | R30 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | *
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* ------------------------------------------------- *
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* | 224 | 228 | 232 | 236 | 240 | 244 | 248 | 252 | *
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* ------------------------------------------------- *
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* | R31 |hiddn| CR | LR | PC |bchai|linkr| FCTX| *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 64 | | *
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* ------------------------------------------------- *
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* | 256 | | *
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* ------------------------------------------------- *
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* | DATA| | *
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* ------------------------------------------------- *
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* *
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*******************************************************/
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.text
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.globl _ostd_jump_fcontext
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.align 2
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_ostd_jump_fcontext:
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; reserve space on stack
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subi r1, r1, 244
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stfd f14, 0(r1) # save F14
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stfd f15, 8(r1) # save F15
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stfd f16, 16(r1) # save F16
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stfd f17, 24(r1) # save F17
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stfd f18, 32(r1) # save F18
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stfd f19, 40(r1) # save F19
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stfd f20, 48(r1) # save F20
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stfd f21, 56(r1) # save F21
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stfd f22, 64(r1) # save F22
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stfd f23, 72(r1) # save F23
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stfd f24, 80(r1) # save F24
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stfd f25, 88(r1) # save F25
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stfd f26, 96(r1) # save F26
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stfd f27, 104(r1) # save F27
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stfd f28, 112(r1) # save F28
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stfd f29, 120(r1) # save F29
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stfd f30, 128(r1) # save F30
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stfd f31, 136(r1) # save F31
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mffs f0 # load FPSCR
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stfd f0, 144(r1) # save FPSCR
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stw r13, 152(r1) # save R13
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stw r14, 156(r1) # save R14
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stw r15, 160(r1) # save R15
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stw r16, 164(r1) # save R16
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stw r17, 168(r1) # save R17
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stw r18, 172(r1) # save R18
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stw r19, 176(r1) # save R19
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stw r20, 180(r1) # save R20
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stw r21, 184(r1) # save R21
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stw r22, 188(r1) # save R22
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stw r23, 192(r1) # save R23
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stw r24, 196(r1) # save R24
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stw r25, 200(r1) # save R25
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stw r26, 204(r1) # save R26
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stw r27, 208(r1) # save R27
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stw r28, 212(r1) # save R28
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stw r29, 216(r1) # save R29
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stw r30, 220(r1) # save R30
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stw r31, 224(r1) # save R31
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stw r3, 228(r1) # save hidden
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# save CR
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mfcr r0
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stw r0, 232(r1)
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# save LR
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mflr r0
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stw r0, 236(r1)
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# save LR as PC
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stw r0, 240(r1)
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# store RSP (pointing to context-data) in R6
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mr r6, r1
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# restore RSP (pointing to context-data) from R4
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mr r1, r4
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lfd f14, 0(r1) # restore F14
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lfd f15, 8(r1) # restore F15
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lfd f16, 16(r1) # restore F16
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lfd f17, 24(r1) # restore F17
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lfd f18, 32(r1) # restore F18
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lfd f19, 40(r1) # restore F19
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lfd f20, 48(r1) # restore F20
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lfd f21, 56(r1) # restore F21
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lfd f22, 64(r1) # restore F22
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lfd f23, 72(r1) # restore F23
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lfd f24, 80(r1) # restore F24
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lfd f25, 88(r1) # restore F25
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lfd f26, 96(r1) # restore F26
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lfd f27, 104(r1) # restore F27
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lfd f28, 112(r1) # restore F28
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lfd f29, 120(r1) # restore F29
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lfd f30, 128(r1) # restore F30
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lfd f31, 136(r1) # restore F31
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lfd f0, 144(r1) # load FPSCR
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mtfsf 0xff, f0 # restore FPSCR
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lwz r13, 152(r1) # restore R13
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lwz r14, 156(r1) # restore R14
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lwz r15, 160(r1) # restore R15
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lwz r16, 164(r1) # restore R16
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lwz r17, 168(r1) # restore R17
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lwz r18, 172(r1) # restore R18
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lwz r19, 176(r1) # restore R19
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lwz r20, 180(r1) # restore R20
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lwz r21, 184(r1) # restore R21
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lwz r22, 188(r1) # restore R22
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lwz r23, 192(r1) # restore R23
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lwz r24, 196(r1) # restore R24
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lwz r25, 200(r1) # restore R25
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lwz r26, 204(r1) # restore R26
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lwz r27, 208(r1) # restore R27
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lwz r28, 212(r1) # restore R28
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lwz r29, 216(r1) # restore R29
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lwz r30, 220(r1) # restore R30
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lwz r31, 224(r1) # restore R31
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lwz r3, 228(r1) # restore hidden
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# restore CR
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lwz r0, 232(r1)
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mtcr r0
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# restore LR
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lwz r0, 236(r1)
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mtlr r0
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# load PC
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lwz r0, 240(r1)
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# restore CTR
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mtctr r0
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# adjust stack
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addi r1, r1, 244
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# return transfer_t
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stw r6, 0(r3)
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stw r5, 4(r3)
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# jump to context
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bctr
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