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https://github.com/tobast/libunwind-eh_elf.git
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270 lines
9.3 KiB
ArmAsm
270 lines
9.3 KiB
ArmAsm
/* libunwind - a platform-independent unwind library
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Copyright (C) 2003 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#include "ia64-test-rbs.h"
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.common stackmem, NSTACKS*STACK_SIZE, 16
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.text
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#define SAVED_SP_OFF 0
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#define SAVED_RP_OFF 8
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#define SAVED_PFS_OFF 16
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#define SAVED_RNAT_OFF 24
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#define SAVED_BSP_OFF 32
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#define SAVED_BSPSTORE_OFF 40
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#define FRAME_SIZE 48
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#define SPILL(n) \
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/* int rbs_spill_#n(long iteration, int (*next_func[])()) */ \
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.globl rbs_spill_##n; \
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.proc rbs_spill_##n; \
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rbs_spill_##n: \
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.prologue; \
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alloc r18 = ar.pfs, 2, (n)-2, 2, 0;/* read ar.pfs */ \
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/* first, calculate address of new stack: */ \
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addl r2 = @ltoff(stackmem), gp; \
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add r8 = 1, in0; \
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;; \
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ld8 r2 = [r2]; /* r2 = &stackmem */ \
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shl r3 = in0, STACK_SIZE_SHIFT; \
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shladd r8 = r8, 3, in1; /* r8 = &next_func[iteration+1] */ \
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;; \
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ld8 r8 = [r8]; /* r8 = next_func[iteration+1] */ \
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add r2 = r2, r3; /* r2 = stackmem[iteration] */ \
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;; \
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ld8 r9 = [r8], 8;; /* r9 = target's entry-point */ \
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ld8 gp = [r8]; /* r22 = target's gp */ \
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addl r3 = STACK_SIZE-FRAME_SIZE, r2; /* r3 = &stackframe */ \
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;; \
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mov b6 = r9; \
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st8 [r3] = sp; \
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.vframesp SAVED_SP_OFF+16; \
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adds sp = -16, r3; /* switch the memory stack */ \
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;; \
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adds r3 = (SAVED_RP_OFF - SAVED_SP_OFF), r3; \
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mov r16 = rp; \
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;; \
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.savesp rp, SAVED_RP_OFF+16; \
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st8 [r3] = r16, (SAVED_PFS_OFF - SAVED_RP_OFF); \
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;; \
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.savesp ar.pfs, SAVED_PFS_OFF+16; \
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st8 [r3] = r18, (SAVED_BSP_OFF - SAVED_PFS_OFF); \
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mov r16 = ar.bsp; \
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mov r17 = ar.bspstore; \
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mov r18 = ar.rnat; \
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;; \
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.savesp ar.bsp, SAVED_BSP_OFF+16; \
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st8 [r3] = r16, (SAVED_BSPSTORE_OFF - SAVED_BSP_OFF); \
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;; \
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.savesp ar.bspstore, SAVED_BSPSTORE_OFF+16; \
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st8 [r3] = r17, (SAVED_RNAT_OFF - SAVED_BSPSTORE_OFF); \
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mov out1 = in1; \
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;; \
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.savesp ar.rnat, SAVED_RNAT_OFF+16; \
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st8 [r3] = r18; \
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.body; \
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mov ar.bspstore = r2; /* switch the backing store */ \
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adds out0 = 1, in0; \
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;; \
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br.call.sptk.many rp = b6; \
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1: /* switch back to stack: */ \
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adds r3 = SAVED_SP_OFF+16, sp; \
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cmp.ge p8, p0 = r8, r0; \
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;; \
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(p8) add r8 = 1, r8; \
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ld8 r16 = [r3], (SAVED_RP_OFF-SAVED_SP_OFF);; /* saved sp */ \
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ld8 r17 = [r3], (SAVED_PFS_OFF-SAVED_RP_OFF);; /* saved rp */ \
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ld8 r18 = [r3], (SAVED_RNAT_OFF-SAVED_PFS_OFF);;/* saved pfs */ \
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ld8 r19 = [r3], (SAVED_BSP_OFF-SAVED_RNAT_OFF);;/* saved rnat */ \
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ld8 r20 = [r3], (SAVED_BSPSTORE_OFF-SAVED_BSP_OFF);;/* saved bsp */ \
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ld8 r21 = [r3];; /* saved bspstore */ \
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mov rp = r17; \
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mov ar.pfs = r18; \
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shl r3 = in0, STACK_SIZE_SHIFT; \
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addl r2 = @ltoff(stackmem), gp;; \
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ld8 r2 = [r2];; /* r2 = &stackmem */ \
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add r2 = r2, r3; /* r2 = stackmem[iteration] */ \
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mov r3 = ar.bsp;; \
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sub r2 = r3, r2;; /* r2 = dirty_size */ \
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shl r2 = r2, 16;; \
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mov ar.rsc = r2;; \
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alloc r3 = ar.pfs, 0, 0, 0, 0;; \
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loadrs;; \
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mov ar.bspstore = r21;; /* this also restores ar.bsp */ \
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mov ar.rnat = r19; \
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.restore sp; \
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mov sp = r16; \
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br.ret.sptk.many rp; \
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.endp rbs_spill_##n
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SPILL(2); SPILL(3)
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SPILL(4); SPILL(5); SPILL(6); SPILL(7)
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SPILL(8); SPILL(9); SPILL(10); SPILL(11)
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SPILL(12); SPILL(13); SPILL(14); SPILL(15)
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SPILL(16); SPILL(17); SPILL(18); SPILL(19)
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SPILL(20); SPILL(21); SPILL(22); SPILL(23)
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SPILL(24); SPILL(25); SPILL(26); SPILL(27)
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SPILL(28); SPILL(29); SPILL(30); SPILL(31)
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SPILL(32); SPILL(33); SPILL(34); SPILL(35)
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SPILL(36); SPILL(37); SPILL(38); SPILL(39)
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SPILL(40); SPILL(41); SPILL(42); SPILL(43)
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SPILL(44); SPILL(45); SPILL(46); SPILL(47)
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SPILL(48); SPILL(49); SPILL(50); SPILL(51)
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SPILL(52); SPILL(53); SPILL(54); SPILL(55)
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SPILL(56); SPILL(57); SPILL(58); SPILL(59)
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SPILL(60); SPILL(61); SPILL(62); SPILL(63)
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SPILL(64); SPILL(65); SPILL(66); SPILL(67)
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SPILL(68); SPILL(69); SPILL(70); SPILL(71)
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SPILL(72); SPILL(73); SPILL(74); SPILL(75)
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SPILL(76); SPILL(77); SPILL(78); SPILL(79)
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SPILL(80); SPILL(81); SPILL(82); SPILL(83)
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SPILL(84); SPILL(85); SPILL(86); SPILL(87)
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SPILL(88); SPILL(89); SPILL(90); SPILL(91)
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SPILL(92); SPILL(93); SPILL(94)
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#define LD_LOC(n) \
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ld4 loc##n = [in1], 4;; \
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cmp.eq p8, p9 = r0, loc##n;; \
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(p9) or loc##n = loc##n, r8; \
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(p8) ld4.s loc##n = [r0]
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#define CK_LOC(n) \
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ld4 r16 = [in1], 4;; \
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cmp.eq p8, p9 = r0, r16; \
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or r16 = r16, r9;; \
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(p8) tnat.z p10, p0 = loc##n; \
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(p9) cmp.ne p10, p0 = r16, loc##n; \
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;; \
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(p10) mov r8 = -n; \
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(p10) br.cond.spnt.many .fail
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/* int loadup(long iteration, int *values, next_func[]) */
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.global loadup
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.proc loadup
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loadup:
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.prologue
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.save ar.pfs, r36
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alloc loc1 = ar.pfs, 3, 90, 3, 0
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.save rp, loc0
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mov loc0 = rp
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.body
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cmp.eq p6, p7 = 1, in0
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;;
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mov ar.rsc = 0 // put RSE into enforced lazy mode
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(p6) mov out1 = in2
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(p7) mov out2 = in2
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(p6) ld8 r17 = [in2] // get address of function descriptor
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(p7) add out0 = -1, in0
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(p7) mov out1 = in1
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;;
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(p6) ld8 r16 = [r17], 8 // load entry point
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shl r8 = in0, 32 // store iteration # in top 32 bits
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mov r18 = in1
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;;
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(p6) ld8 r1 = [r17] // load gp
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(p6) mov b6 = r16
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(p6) mov out0 = 0
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;;
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LD_LOC( 2); LD_LOC( 3)
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LD_LOC( 4); LD_LOC( 5); LD_LOC( 6); LD_LOC( 7)
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LD_LOC( 8); LD_LOC( 9); LD_LOC(10); LD_LOC(11)
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LD_LOC(12); LD_LOC(13); LD_LOC(14); LD_LOC(15)
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LD_LOC(16); LD_LOC(17); LD_LOC(18); LD_LOC(19)
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LD_LOC(20); LD_LOC(21); LD_LOC(22); LD_LOC(23)
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LD_LOC(24); LD_LOC(25); LD_LOC(26); LD_LOC(27)
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LD_LOC(28); LD_LOC(29); LD_LOC(30); LD_LOC(31)
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LD_LOC(32); LD_LOC(33); LD_LOC(34); LD_LOC(35)
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LD_LOC(36); LD_LOC(37); LD_LOC(38); LD_LOC(39)
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LD_LOC(40); LD_LOC(41); LD_LOC(42); LD_LOC(43)
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LD_LOC(44); LD_LOC(45); LD_LOC(46); LD_LOC(47)
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LD_LOC(48); LD_LOC(49); LD_LOC(50); LD_LOC(51)
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LD_LOC(52); LD_LOC(53); LD_LOC(54); LD_LOC(55)
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LD_LOC(56); LD_LOC(57); LD_LOC(58); LD_LOC(59)
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LD_LOC(60); LD_LOC(61); LD_LOC(62); LD_LOC(63)
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LD_LOC(64); LD_LOC(65); LD_LOC(66); LD_LOC(67)
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LD_LOC(68); LD_LOC(69); LD_LOC(70); LD_LOC(71)
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LD_LOC(72); LD_LOC(73); LD_LOC(74); LD_LOC(75)
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LD_LOC(76); LD_LOC(77); LD_LOC(78); LD_LOC(79)
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LD_LOC(80); LD_LOC(81); LD_LOC(82); LD_LOC(83)
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LD_LOC(84); LD_LOC(85); LD_LOC(86); LD_LOC(87)
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LD_LOC(88); LD_LOC(89)
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;;
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{ .mbb
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mov in1 = r18
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(p6) br.call.sptk.many rp = b6
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(p7) br.call.sptk.many rp = loadup
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}
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cmp.lt p8, p9 = r8, r0
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shl r9 = in0, 32 // store iteration # in top 32 bits
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(p8) br.cond.spnt.few .fail
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;;
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add r8 = 1, r8
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CK_LOC( 2); CK_LOC( 3)
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CK_LOC( 4); CK_LOC( 5); CK_LOC( 6); CK_LOC( 7)
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CK_LOC( 8); CK_LOC( 9); CK_LOC(10); CK_LOC(11)
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CK_LOC(12); CK_LOC(13); CK_LOC(14); CK_LOC(15)
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CK_LOC(16); CK_LOC(17); CK_LOC(18); CK_LOC(19)
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CK_LOC(20); CK_LOC(21); CK_LOC(22); CK_LOC(23)
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CK_LOC(24); CK_LOC(25); CK_LOC(26); CK_LOC(27)
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CK_LOC(28); CK_LOC(29); CK_LOC(30); CK_LOC(31)
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CK_LOC(32); CK_LOC(33); CK_LOC(34); CK_LOC(35)
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CK_LOC(36); CK_LOC(37); CK_LOC(38); CK_LOC(39)
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CK_LOC(40); CK_LOC(41); CK_LOC(42); CK_LOC(43)
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CK_LOC(44); CK_LOC(45); CK_LOC(46); CK_LOC(47)
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CK_LOC(48); CK_LOC(49); CK_LOC(50); CK_LOC(51)
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CK_LOC(52); CK_LOC(53); CK_LOC(54); CK_LOC(55)
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CK_LOC(56); CK_LOC(57); CK_LOC(58); CK_LOC(59)
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CK_LOC(60); CK_LOC(61); CK_LOC(62); CK_LOC(63)
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CK_LOC(64); CK_LOC(65); CK_LOC(66); CK_LOC(67)
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CK_LOC(68); CK_LOC(69); CK_LOC(70); CK_LOC(71)
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CK_LOC(72); CK_LOC(73); CK_LOC(74); CK_LOC(75)
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CK_LOC(76); CK_LOC(77); CK_LOC(78); CK_LOC(79)
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CK_LOC(80); CK_LOC(81); CK_LOC(82); CK_LOC(83)
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CK_LOC(84); CK_LOC(85); CK_LOC(86); CK_LOC(87)
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CK_LOC(88); CK_LOC(89)
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.fail:
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mov rp = loc0
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mov ar.pfs = loc1
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br.ret.sptk.many rp
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.endp loadup
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.global resumption_point_label
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.proc resumption_point
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resumption_point:
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resumption_point_label:
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.prologue
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.save rp, r16
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.save ar.pfs, r0
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.body
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mov r8 = r15
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mov b6 = r16
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;;
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br.cond.sptk.many b6
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.endp resumption_point
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