diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/Ipf/setjmp.s')
| -rw-r--r-- | MdePkg/Library/BaseLib/Ipf/setjmp.s | 373 |
1 files changed, 82 insertions, 291 deletions
diff --git a/MdePkg/Library/BaseLib/Ipf/setjmp.s b/MdePkg/Library/BaseLib/Ipf/setjmp.s index 1098be8306..ff8c747437 100644 --- a/MdePkg/Library/BaseLib/Ipf/setjmp.s +++ b/MdePkg/Library/BaseLib/Ipf/setjmp.s @@ -1,317 +1,108 @@ /// @file
-/// Contains an implementation of setjmp and longjmp for the
-/// Itanium-based architecture.
+/// Contains an implementation of longjmp for the Itanium-based architecture.
///
-/// Copyright (c) 2006, Intel Corporation
-/// All rights reserved. This program and the accompanying materials
-/// are licensed and made available under the terms and conditions of the BSD License
-/// which accompanies this distribution. The full text of the license may be found at
-/// http://opensource.org/licenses/bsd-license.php
-///
-/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-///
-/// Module Name: setjmp.s
+/// Copyright (c) 2006, Intel Corporation
+/// All rights reserved. This program and the accompanying materials
+/// are licensed and made available under the terms and conditions of the BSD License
+/// which accompanies this distribution. The full text of the license may be found at
+/// http://opensource.org/licenses/bsd-license.php
+///
+/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+///
+/// Module Name: longjmp.s
///
///
- .file "setjmp.s"
+.auto
+.text
-#include "asm.h"
-#include "ia_64gen.h"
+.global InternalAssertJumpBuffer
+.type InternalAssertJumpBuffer, @function
-/// int SetJump(struct jmp_buffer save)
-///
-/// Setup a non-local goto.
-///
-/// Description:
-///
-/// SetJump stores the current register set in the area pointed to
-/// by "save". It returns zero. Subsequent calls to "LongJump" will
-/// restore the registers and return non-zero to the same location.
-///
-/// On entry, r32 contains the pointer to the jmp_buffer
-///
+.proc SetJump
+.type SetJump, @function
+SetJump::
+ alloc loc0 = ar.pfs, 1, 2, 1, 0
+ mov loc1 = b0
+ mov out0 = in0
+
+ brl.call.sptk.many b0 = InternalAssertJumpBuffer
+
+ mov r14 = ar.unat
+ mov r15 = ar.bsp
+ add r10 = 0x10*20, in0
+
+ stf.spill.nta [in0] = f2, 0x10
+ st8.spill.nta [r10] = r4, 8
+ mov r21 = b1
+
+ stf.spill.nta [in0] = f3, 0x10
+ st8.spill.nta [r10] = r5, 8
+ mov r22 = b2
-PROCEDURE_ENTRY(SetJump)
- //
- // Make sure buffer is aligned at 16byte boundary
- //
- mov r32 = r33
+ stf.spill.nta [in0] = f4, 0x10
+ st8.spill.nta [r10] = r6, 8
+ mov r23 = b3
- add r10 = -0x10,r0 ;; // mask the lower 4 bits
- and r32 = r32, r10;;
- add r32 = 0x10, r32;; // move to next 16 byte boundary
+ stf.spill.nta [in0] = f5, 0x10
+ st8.spill.nta [r10] = r7, 8
+ mov r24 = b4
- add r10 = J_PREDS, r32 // skip Unats & pfs save area
- add r11 = J_BSP, r32
- //
- // save immediate context
- //
- mov r2 = ar.bsp // save backing store pointer
- mov r3 = pr // save predicates
- ;;
- //
- // save user Unat register
- //
- mov r16 = ar.lc // save loop count register
- mov r14 = ar.unat // save user Unat register
+ stf.spill.nta [in0] = f16, 0x10
+ st8.spill.nta [r10] = sp, 8
+ mov r25 = b5
- st8 [r10] = r3, J_LC-J_PREDS
- st8 [r11] = r2, J_R4-J_BSP
- ;;
- st8 [r10] = r16, J_R5-J_LC
- st8 [r32] = r14, J_NATS // Note: Unat at the
- // beginning of the save area
- mov r15 = ar.pfs
- ;;
- //
- // save preserved general registers & NaT's
- //
- st8.spill [r11] = r4, J_R6-J_R4
- ;;
- st8.spill [r10] = r5, J_R7-J_R5
- ;;
- st8.spill [r11] = r6, J_SP-J_R6
- ;;
- st8.spill [r10] = r7, J_F3-J_R7
- ;;
- st8.spill [r11] = sp, J_F2-J_SP
- ;;
- //
- // save spilled Unat and pfs registers
- //
- mov r2 = ar.unat // save Unat register after spill
- ;;
- st8 [r32] = r2, J_PFS-J_NATS // save unat for spilled regs
- ;;
- st8 [r32] = r15 // save pfs
- //
- // save floating registers
- //
- stf.spill [r11] = f2, J_F4-J_F2
- stf.spill [r10] = f3, J_F5-J_F3
- ;;
- stf.spill [r11] = f4, J_F16-J_F4
- stf.spill [r10] = f5, J_F17-J_F5
- ;;
- stf.spill [r11] = f16, J_F18-J_F16
- stf.spill [r10] = f17, J_F19-J_F17
- ;;
- stf.spill [r11] = f18, J_F20-J_F18
- stf.spill [r10] = f19, J_F21-J_F19
- ;;
- stf.spill [r11] = f20, J_F22-J_F20
- stf.spill [r10] = f21, J_F23-J_F21
- ;;
- stf.spill [r11] = f22, J_F24-J_F22
- stf.spill [r10] = f23, J_F25-J_F23
- ;;
- stf.spill [r11] = f24, J_F26-J_F24
- stf.spill [r10] = f25, J_F27-J_F25
- ;;
- stf.spill [r11] = f26, J_F28-J_F26
- stf.spill [r10] = f27, J_F29-J_F27
- ;;
- stf.spill [r11] = f28, J_F30-J_F28
- stf.spill [r10] = f29, J_F31-J_F29
- ;;
- stf.spill [r11] = f30, J_FPSR-J_F30
- stf.spill [r10] = f31, J_B0-J_F31 // size of f31 + fpsr
- //
- // save FPSR register & branch registers
- //
- mov r2 = ar.fpsr // save fpsr register
- mov r3 = b0
- ;;
- st8 [r11] = r2, J_B1-J_FPSR
- st8 [r10] = r3, J_B2-J_B0
- mov r2 = b1
- mov r3 = b2
- ;;
- st8 [r11] = r2, J_B3-J_B1
- st8 [r10] = r3, J_B4-J_B2
- mov r2 = b3
- mov r3 = b4
- ;;
- st8 [r11] = r2, J_B5-J_B3
- st8 [r10] = r3
- mov r2 = b5
- ;;
- st8 [r11] = r2
- ;;
- //
- // return
- //
- mov r8 = r0 // return 0 from setjmp
- mov ar.unat = r14 // restore unat
- br.ret.sptk b0
+ stf.spill.nta [in0] = f17, 0x10
+ st8.nta [r10] = loc1, 8
+ mov r16 = pr
-PROCEDURE_EXIT(SetJump)
+ stf.spill.nta [in0] = f18, 0x10
+ st8.nta [r10] = r21, 8
+ mov r17 = ar.lc
+ stf.spill.nta [in0] = f19, 0x10
+ st8.nta [r10] = r22, 8
-//
-// void _LongJump(struct jmp_buffer *)
-//
-// Perform a non-local goto.
-//
-// Description:
-//
-// LongJump initializes the register set to the values saved by a
-// previous 'SetJump' and jumps to the return location saved by that
-// 'SetJump'. This has the effect of unwinding the stack and returning
-// for a second time to the 'SetJump'.
-//
+ stf.spill.nta [in0] = f20, 0x10
+ st8.nta [r10] = r23, 8
-PROCEDURE_ENTRY(_LongJump)
- //
- // Make sure buffer is aligned at 16byte boundary
- //
- mov r32 = r33
+ stf.spill.nta [in0] = f21, 0x10
+ st8.nta [r10] = r24, 8
- add r10 = -0x10,r0 ;; // mask the lower 4 bits
- and r32 = r32, r10;;
- add r32 = 0x10, r32;; // move to next 16 byte boundary
+ stf.spill.nta [in0] = f22, 0x10
+ st8.nta [r10] = r25, 8
- //
- // caching the return value as we do invala in the end
- //
-/// mov r8 = r33 // return value
- mov r8 = 1 // For now return hard coded 1
+ stf.spill.nta [in0] = f23, 0x10
+ mov r18 = ar.unat
- //
- // get immediate context
- //
- mov r14 = ar.rsc // get user RSC conf
- add r10 = J_PFS, r32 // get address of pfs
- add r11 = J_NATS, r32
- ;;
- ld8 r15 = [r10], J_BSP-J_PFS // get pfs
- ld8 r2 = [r11], J_LC-J_NATS // get unat for spilled regs
- ;;
- mov ar.unat = r2
- ;;
- ld8 r16 = [r10], J_PREDS-J_BSP // get backing store pointer
- mov ar.rsc = r0 // put RSE in enforced lazy
- mov ar.pfs = r15
- ;;
-
- //
- // while returning from longjmp the BSPSTORE and BSP needs to be
- // same and discard all the registers allocated after we did
- // setjmp. Also, we need to generate the RNAT register since we
- // did not flushed the RSE on setjmp.
- //
- mov r17 = ar.bspstore // get current BSPSTORE
- ;;
- cmp.ltu p6,p7 = r17, r16 // is it less than BSP of
-(p6) br.spnt.few .flush_rse
- mov r19 = ar.rnat // get current RNAT
- ;;
- loadrs // invalidate dirty regs
- br.sptk.many .restore_rnat // restore RNAT
+ stf.spill.nta [in0] = f24, 0x10
+ st8.nta [r10] = r14, 8 // UNAT
-.flush_rse:
- flushrs
- ;;
- mov r19 = ar.rnat // get current RNAT
- mov r17 = r16 // current BSPSTORE
- ;;
-.restore_rnat:
- //
- // check if RNAT is saved between saved BSP and curr BSPSTORE
- //
- dep r18 = 1,r16,3,6 // get RNAT address
- ;;
- cmp.ltu p8,p9 = r18, r17 // RNAT saved on RSE
- ;;
-(p8) ld8 r19 = [r18] // get RNAT from RSE
- ;;
- mov ar.bspstore = r16 // set new BSPSTORE
- ;;
- mov ar.rnat = r19 // restore RNAT
- mov ar.rsc = r14 // restore RSC conf
+ stf.spill.nta [in0] = f25, 0x10
+ st8.nta [r10] = r18, 8 // UNAT after spill
+ stf.spill.nta [in0] = f26, 0x10
+ st8.nta [r10] = loc0, 8 // PFS
- ld8 r3 = [r11], J_R4-J_LC // get lc register
- ld8 r2 = [r10], J_R5-J_PREDS // get predicates
- ;;
- mov pr = r2, -1
- mov ar.lc = r3
- //
- // restore preserved general registers & NaT's
- //
- ld8.fill r4 = [r11], J_R6-J_R4
- ;;
- ld8.fill r5 = [r10], J_R7-J_R5
- ld8.fill r6 = [r11], J_SP-J_R6
- ;;
- ld8.fill r7 = [r10], J_F2-J_R7
- ld8.fill sp = [r11], J_F3-J_SP
- ;;
- //
- // restore floating registers
- //
- ldf.fill f2 = [r10], J_F4-J_F2
- ldf.fill f3 = [r11], J_F5-J_F3
- ;;
- ldf.fill f4 = [r10], J_F16-J_F4
- ldf.fill f5 = [r11], J_F17-J_F5
- ;;
- ldf.fill f16 = [r10], J_F18-J_F16
- ldf.fill f17 = [r11], J_F19-J_F17
- ;;
- ldf.fill f18 = [r10], J_F20-J_F18
- ldf.fill f19 = [r11], J_F21-J_F19
- ;;
- ldf.fill f20 = [r10], J_F22-J_F20
- ldf.fill f21 = [r11], J_F23-J_F21
- ;;
- ldf.fill f22 = [r10], J_F24-J_F22
- ldf.fill f23 = [r11], J_F25-J_F23
- ;;
- ldf.fill f24 = [r10], J_F26-J_F24
- ldf.fill f25 = [r11], J_F27-J_F25
- ;;
- ldf.fill f26 = [r10], J_F28-J_F26
- ldf.fill f27 = [r11], J_F29-J_F27
- ;;
- ldf.fill f28 = [r10], J_F30-J_F28
- ldf.fill f29 = [r11], J_F31-J_F29
- ;;
- ldf.fill f30 = [r10], J_FPSR-J_F30
- ldf.fill f31 = [r11], J_B0-J_F31 ;;
+ stf.spill.nta [in0] = f27, 0x10
+ st8.nta [r10] = r15, 8 // BSP
+ mov r8 = 0
- //
- // restore branch registers and fpsr
- //
- ld8 r16 = [r10], J_B1-J_FPSR // get fpsr
- ld8 r17 = [r11], J_B2-J_B0 // get return pointer
- ;;
- mov ar.fpsr = r16
- mov b0 = r17
- ld8 r2 = [r10], J_B3-J_B1
- ld8 r3 = [r11], J_B4-J_B2
- ;;
- mov b1 = r2
- mov b2 = r3
- ld8 r2 = [r10], J_B5-J_B3
- ld8 r3 = [r11]
- ;;
- mov b3 = r2
- mov b4 = r3
- ld8 r2 = [r10]
- ld8 r21 = [r32] // get user unat
- ;;
- mov b5 = r2
- mov ar.unat = r21
+ stf.spill.nta [in0] = f28, 0x10
+ mov r19 = ar.fpsr
- //
- // invalidate ALAT
- //
- invala ;;
+ stf.spill.nta [in0] = f29, 0x10
+ st8.nta [r10] = r16, 8 // PR
+ mov ar.pfs = loc0
- br.ret.sptk b0
-PROCEDURE_EXIT(_LongJump)
+ stf.spill.nta [in0] = f30, 0x10
+ st8.nta [r10] = r17, 8 // LC
+ mov b0 = loc1
+ stf.spill.nta [in0] = f31, 0x10
+ st8.nta [r10] = r19 // FPSR
+ mov ar.unat = r14
+ br.ret.sptk b0
+.endp SetJump
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