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Add partial support for IA-64 unwind sections.
* config/ia64/crtbegin.asm: Add IA-64 unwind support. Correct alloc and gp save/restore problems. * config/ia64/crtend.asm: Add IA-64 unwind support. * config/ia64/ia64.c (ia64_compute_frame_size): Don't include pr_size in fr_pad_size calculation. ... Co-Authored-By: Andrew Haley <aph@cygnus.com> Co-Authored-By: Jim Wilson <wilson@cygnus.com> From-SVN: r33424
This commit is contained in:
Andrew MacLeod
Jim Wilson
parent
7d7f30cfa0
commit
0c96007e77
@ -1,3 +1,33 @@
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Tue Apr 25 16:16:04 2000 Andrew MacLeod <amacleod@cygnus.com>
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Jim Wilson <wilson@cygnus.com>
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Andrew Haley <aph@cygnus.com>
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* config/ia64/crtbegin.asm: Add IA-64 unwind support. Correct alloc
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and gp save/restore problems.
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* config/ia64/crtend.asm: Add IA-64 unwind support.
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* config/ia64/ia64.c (ia64_compute_frame_size): Don't include pr_size
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in fr_pad_size calculation.
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(save_restore_insns): Move PR save area. Correct uses of
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RTX_FRAME_RELATED_P.
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(ia64_expand_prologue): Mark alloc with RTX_FRAME_RELATED_P.
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(ia64_expand_epilogue): Add eh_epilogue support.
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(ia64_function_prologue): Emit .prologue directive.
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(ia64_init_machine_status, ia64_mark_machine_status): New functions.
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(ia64_override_options): Set init_machine_status and
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mark_machine_status.
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(rtx_needs_barrier): Handle bsp reads and writes.
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(spill_offset, sp_offset, spill_offset_emitted, tmp_reg, tmp_saved):
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New static variables.
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(process_set, process_for_unwind_directive): New functions.
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* config/ia64/ia64.h (ASM_OUTPUT_XDATA_CHAR, ASM_OUTPUT_XDATA_SHORT,
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ASM_OUTPUT_XDATA_INT, ASM_OUTPUT_XDATA_DOUBLE_INT, ASM_OUTPUT_EH_CHAR,
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ASM_OUTPUT_EH_SHORT, ASM_OUTPUT_EH_INT, ASM_OUTPUT_EH_DOUBLE_INT): New
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macros.
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(EH_FRAME_SECTION_ASM_OP): Define to IA_64.unwind section.
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(IA64_UNWIND_INFO, HANDLER_SECTION, IA64_UNWIND_EMIT): Define.
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(struct machine_function): Define.
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* config/ia64/ia64.md (bsp_value, set_bsp, eh_epilogue): New patterns.
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2000-04-25 Bruce Korb <bkorb@gnu.org>
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* fixinc/Makefile.in: make the removal of old programs more
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@ -26,12 +26,17 @@ __CTOR_LIST__:
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__DTOR_LIST__:
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data8 -1
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.section .IA_64.unwind
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__EH_FRAME_BEGIN__:
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.section .sdata
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5: data8 @segrel(6f)
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.type dtor_ptr#,@object
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.size dtor_ptr#,8
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dtor_ptr:
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data8 __DTOR_LIST__# + 8
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/* A handle for __cxa_finalize to manage c++ local destructors. */
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.global __dso_handle#
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.type __dso_handle#,@object
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.size __dso_handle#,8
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@ -45,6 +50,16 @@ __dso_handle:
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data8 0
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#endif
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/* The frame object. */
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/* ??? How can we rationally keep this size correct? */
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.section .bss
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.type frame_object#,@object
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.size frame_object#,56
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.align 8
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frame_object:
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.zero 56
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/*
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* Fragment of the ELF _fini routine that invokes our dtor cleanup.
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*
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@ -65,38 +80,55 @@ __dso_handle:
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;;
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}
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.text
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/*
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* Fragment of the ELF _init routine that sets up the frame info.
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*/
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.section .init,"ax","progbits"
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{ .mfb
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st8 [r12] = gp, -16
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br.call.sptk.many b0 = __do_frame_setup#
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;;
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}
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{ .mmi
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adds r12 = 16, r12
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;;
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ld8 gp = [r12]
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;;
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}
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.section .text
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.align 16
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.proc __do_global_dtors_aux#
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__do_global_dtors_aux:
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#ifndef SHARED
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{ .mii
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alloc loc2 = ar.pfs, 0, 3, 0, 0
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alloc loc3 = ar.pfs, 0, 4, 1, 0
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addl loc0 = @gprel(dtor_ptr#), gp
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mov loc1 = b0
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}
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mov loc2 = gp
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#else
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/*
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if (__cxa_finalize)
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__cxa_finalize(__dso_handle)
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*/
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{ .mii
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alloc loc2 = ar.pfs, 1, 3, 0, 0
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alloc loc3 = ar.pfs, 0, 4, 1, 0
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addl loc0 = @gprel(dtor_ptr#), gp
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addl r16 = @ltoff(@fptr(__cxa_finalize#)), gp
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;;
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}
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mov loc2 = gp
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{ .mmi
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ld8 r16 = [r16]
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;;
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addl r32 = @ltoff(__dso_handle#), gp
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addl out0 = @ltoff(__dso_handle#), gp
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cmp.ne p7, p0 = r0, r16
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;;
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}
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{ .mmi
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ld8 r32 = [r32]
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ld8 out0 = [out0]
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(p7) ld8 r18 = [r16], 8
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mov loc1 = b0
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;;
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@ -138,10 +170,37 @@ __do_global_dtors_aux:
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{ .mfb
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cmp.ne p6, p0 = r0, r16
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(p6) br.cond.sptk.few 0b
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}
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mov gp = loc2
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;;
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/*
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if (__deregister_frame_info)
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__deregister_frame_info(__EH_FRAME_BEGIN__)
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*/
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{ .mii
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addl r16 = @ltoff(@fptr(__deregister_frame_info#)), gp
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addl out0 = @ltoff(__EH_FRAME_BEGIN__#), gp
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;;
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}
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{ .mmi
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ld8 r16 = [r16]
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ld8 out0 = [out0]
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;;
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}
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{ .mmi
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cmp.ne p7, p0 = r0, r16
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;;
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(p7) ld8 r18 = [r16], 8
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;;
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}
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{ .mib
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(p7) ld8 gp = [r16]
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(p7) mov b6 = r18
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(p7) br.call.sptk.many b0 = b6
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}
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{ .mii
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mov b0 = loc1
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mov ar.pfs = loc2
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mov ar.pfs = loc3
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}
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{ .bbb
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br.ret.sptk.many b0
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@ -149,6 +208,61 @@ __do_global_dtors_aux:
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}
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.endp __do_global_dtors_aux#
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.proc __do_frame_setup#
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__do_frame_setup:
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/*
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if (__register_frame_info)
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__register_frame_info(__EH_FRAME_BEGIN__)
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*/
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{ .mii
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alloc loc3 = ar.pfs, 0, 4, 2, 0
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addl r16 = @ltoff(@fptr(__register_frame_info#)), gp
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addl out0 = @ltoff(__EH_FRAME_BEGIN__#), gp
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;;
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}
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addl out1 = @ltoff(frame_object#), gp
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;;
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/* frame_object.pc_base = segment_base_offset;
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pc_base is at offset 0 within frame_object. */
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6:
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mov loc0 = ip
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addl loc1 = @gprel(5b), gp
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;;
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ld8 loc1 = [loc1]
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ld8 out1 = [out1]
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;;
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sub loc2 = loc0, loc1
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;;
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st8 [out1] = loc2
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{ .mmi
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ld8 r16 = [r16]
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ld8 out0 = [out0]
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mov loc0 = b0
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;;
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}
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{ .mmi
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cmp.ne p7, p0 = r0, r16
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;;
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(p7) ld8 r18 = [r16], 8
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;;
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}
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{ .mib
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(p7) ld8 gp = [r16]
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(p7) mov b6 = r18
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(p7) br.call.sptk.many b0 = b6
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}
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{ .mii
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mov b0 = loc0
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mov ar.pfs = loc3
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}
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{ .bbb
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br.ret.sptk.many b0
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;;
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}
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.endp __do_frame_setup#
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#ifdef SHARED
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.weak __cxa_finalize#
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#endif
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.weak __deregister_frame_info#
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.weak __register_frame_info#
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@ -26,6 +26,10 @@ __CTOR_END__:
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__DTOR_END__:
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data8 0
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.section .IA_64.unwind
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__EH_FRAME_END__:
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data8 -1
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/*
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* Fragment of the ELF _init routine that invokes our dtor cleanup.
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*
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@ -567,7 +567,7 @@ ia64_compute_frame_size (size)
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/* The FR save area needs to be 16-byte aligned. */
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if (fr_size)
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{
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tmp = (size + fr_size + pr_size + br_size);
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tmp = (size + fr_size + br_size);
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fr_pad_size = IA64_STACK_ALIGN (tmp) - tmp;
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}
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else
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@ -653,14 +653,36 @@ save_restore_insns (save_p)
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{
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offset_rtx = tmp_reg;
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insn = emit_insn (gen_movdi (tmp_reg, GEN_INT (offset)));
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RTX_FRAME_RELATED_P (insn) = 1;
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if (save_p)
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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insn = emit_insn (gen_adddi3 (tmp_reg,
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(frame_pointer_needed ? frame_pointer_rtx
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: stack_pointer_rtx),
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offset_rtx));
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RTX_FRAME_RELATED_P (insn) = 1;
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if (save_p)
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RTX_FRAME_RELATED_P (insn) = 1;
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/* If one is used, we save/restore all of them. */
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for (regno = PR_REG (0); regno <= PR_REG (63); regno++)
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if (TEST_HARD_REG_BIT (current_frame_info.mask, regno))
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{
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rtx mem = gen_rtx_MEM (DImode, tmp_post_inc);
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if (save_p)
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{
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insn = emit_insn (gen_pr_spill (tmp2_reg));
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RTX_FRAME_RELATED_P (insn) = 1;
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insn = emit_insn (gen_movdi (mem, tmp2_reg));
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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else
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{
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insn = emit_insn (gen_movdi (tmp2_reg, mem));
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insn = emit_insn (gen_pr_restore (tmp2_reg));
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}
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break;
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}
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/* Must save/restore ar.unat if any GR is spilled/restored. */
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if (current_frame_info.gr_size != 0
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|| current_function_varargs || current_function_stdarg)
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@ -669,18 +691,21 @@ save_restore_insns (save_p)
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if (save_p)
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{
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insn = emit_insn (gen_unat_spill (tmp2_reg));
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RTX_FRAME_RELATED_P (insn) = 1;
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if (save_p)
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RTX_FRAME_RELATED_P (insn) = 1;
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insn = emit_insn (gen_movdi (mem, tmp2_reg));
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RTX_FRAME_RELATED_P (insn) = 1;
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if (save_p)
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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else
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{
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insn = emit_insn (gen_movdi (tmp2_reg, mem));
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RTX_FRAME_RELATED_P (insn) = 1;
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if (save_p)
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RTX_FRAME_RELATED_P (insn) = 1;
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/* The restore happens after the last ld8.fill instruction. */
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}
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}
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for (regno = GR_REG (0); regno <= GR_REG (127); regno++)
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if (TEST_HARD_REG_BIT (current_frame_info.mask, regno))
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{
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@ -691,7 +716,8 @@ save_restore_insns (save_p)
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else
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insn = emit_insn (gen_gr_restore (gen_rtx_REG (DImode, regno),
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mem));
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RTX_FRAME_RELATED_P (insn) = 1;
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if (save_p)
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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/* Now restore the unat register if necessary. */
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@ -710,31 +736,10 @@ save_restore_insns (save_p)
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else
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insn = emit_insn (gen_fr_restore (gen_rtx_REG (XFmode, regno),
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mem));
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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/* If one is used, we save/restore all of them. */
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for (regno = PR_REG (0); regno <= PR_REG (63); regno++)
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if (TEST_HARD_REG_BIT (current_frame_info.mask, regno))
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{
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rtx mem = gen_rtx_MEM (DImode, tmp_post_inc);
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if (save_p)
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{
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insn = emit_insn (gen_pr_spill (tmp2_reg));
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RTX_FRAME_RELATED_P (insn) = 1;
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insn = emit_insn (gen_movdi (mem, tmp2_reg));
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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else
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{
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insn = emit_insn (gen_movdi (tmp2_reg, mem));
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RTX_FRAME_RELATED_P (insn) = 1;
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insn = emit_insn (gen_pr_restore (tmp2_reg));
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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break;
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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for (regno = BR_REG (0); regno <= BR_REG (7); regno++)
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if (TEST_HARD_REG_BIT (current_frame_info.mask, regno))
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{
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@ -752,9 +757,11 @@ save_restore_insns (save_p)
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}
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insn = emit_insn (gen_movdi (tmp2_reg, src));
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RTX_FRAME_RELATED_P (insn) = 1;
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if (save_p)
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RTX_FRAME_RELATED_P (insn) = 1;
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insn = emit_insn (gen_movdi (dest, tmp2_reg));
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RTX_FRAME_RELATED_P (insn) = 1;
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if (save_p)
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RTX_FRAME_RELATED_P (insn) = 1;
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}
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}
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}
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@ -933,9 +940,10 @@ ia64_expand_prologue ()
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ia64_need_regstk = 0;
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ia64_arpfs_regno = LOC_REG (locals - 1);
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emit_insn (gen_alloc (gen_rtx_REG (DImode, ia64_arpfs_regno),
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GEN_INT (inputs), GEN_INT (locals),
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GEN_INT (outputs), GEN_INT (rotates)));
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insn = emit_insn (gen_alloc (gen_rtx_REG (DImode, ia64_arpfs_regno),
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GEN_INT (inputs), GEN_INT (locals),
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GEN_INT (outputs), GEN_INT (rotates)));
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RTX_FRAME_RELATED_P (insn) = 1;
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/* Emit a save of BR_REG (0) if we call other functions.
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Do this even if this function doesn't return, as EH
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@ -1020,32 +1028,38 @@ ia64_expand_epilogue ()
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pointer updates anti-dependent on them. */
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emit_insn (gen_blockage ());
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if (frame_pointer_needed)
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if (cfun->machine->ia64_eh_epilogue_sp == NULL_RTX)
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{
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/* If there is a frame pointer, then we need to make the stack pointer
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restore depend on the frame pointer, so that the stack pointer
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restore won't be moved up past fp-relative loads from the frame. */
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emit_insn (gen_epilogue_deallocate_stack (stack_pointer_rtx,
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hard_frame_pointer_rtx));
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}
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else
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{
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int frame_size = current_frame_info.total_size;
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rtx offset;
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if (frame_pointer_needed)
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{
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/* If there is a frame pointer, then we need to make the stack pointer
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restore depend on the frame pointer, so that the stack pointer
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restore won't be moved up past fp-relative loads from the frame. */
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emit_insn (gen_epilogue_deallocate_stack (stack_pointer_rtx,
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hard_frame_pointer_rtx));
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}
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else
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{
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int frame_size = current_frame_info.total_size;
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rtx offset;
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if (frame_size != 0)
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{
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if (CONST_OK_FOR_I (frame_size))
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offset = GEN_INT (frame_size);
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else
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{
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offset = gen_rtx_REG (DImode, GR_REG (2));
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emit_insn (gen_movdi (offset, GEN_INT (frame_size)));
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}
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emit_insn (gen_adddi3 (stack_pointer_rtx, stack_pointer_rtx,
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offset));
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}
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if (frame_size != 0)
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{
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if (CONST_OK_FOR_I (frame_size))
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offset = GEN_INT (frame_size);
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else
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{
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offset = gen_rtx_REG (DImode, GR_REG (2));
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emit_insn (gen_movdi (offset, GEN_INT (frame_size)));
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}
|
||||
emit_insn (gen_adddi3 (stack_pointer_rtx, stack_pointer_rtx,
|
||||
offset));
|
||||
}
|
||||
}
|
||||
}
|
||||
/* Return via eh_epilogue, so we already have our new stack pointer. */
|
||||
else
|
||||
emit_insn (gen_movdi (stack_pointer_rtx, cfun->machine->ia64_eh_epilogue_sp));
|
||||
|
||||
if (ia64_arpfs_regno)
|
||||
emit_insn (gen_pfs_restore (gen_rtx_REG (DImode, ia64_arpfs_regno)));
|
||||
@ -1054,6 +1068,11 @@ ia64_expand_epilogue ()
|
||||
emit_move_insn (gen_rtx_REG (DImode, BR_REG (0)),
|
||||
gen_rtx_REG (DImode, ia64_rp_regno));
|
||||
|
||||
if (cfun->machine->ia64_eh_epilogue_bsp != NULL_RTX)
|
||||
{
|
||||
/* We have to restore the bsp. */
|
||||
emit_insn (gen_set_bsp (cfun->machine->ia64_eh_epilogue_bsp));
|
||||
}
|
||||
emit_jump_insn (gen_return_internal (gen_rtx_REG (DImode, BR_REG (0))));
|
||||
}
|
||||
|
||||
@ -1064,10 +1083,39 @@ ia64_function_prologue (file, size)
|
||||
FILE *file;
|
||||
int size;
|
||||
{
|
||||
rtx insn;
|
||||
if (ia64_need_regstk)
|
||||
fprintf (file, "\t.regstk %d, 0, 0, 0\n", ia64_input_regs);
|
||||
|
||||
/* ??? Emit .body directive. GNU as ignores .body currently. */
|
||||
if (!flag_unwind_tables && (!flag_exceptions || exceptions_via_longjmp))
|
||||
return;
|
||||
|
||||
/* Emit the .prologue directive. in order to do this, we need to find
|
||||
where the stack pointer is moved toa GR, if it is, and mark it. */
|
||||
|
||||
for (insn = get_insns (); insn != NULL_RTX; insn = NEXT_INSN (insn))
|
||||
{
|
||||
if (RTX_FRAME_RELATED_P (insn) && GET_CODE (insn) == INSN)
|
||||
{
|
||||
rtx pat = PATTERN (insn);
|
||||
if (GET_CODE (pat) == SET)
|
||||
{
|
||||
rtx dest = SET_DEST (pat);
|
||||
rtx src = SET_SRC (pat);
|
||||
if (GET_CODE (src) == REG && REGNO (src) == STACK_POINTER_REGNUM
|
||||
&& GET_CODE (dest) == REG)
|
||||
{
|
||||
int reg = REGNO (dest);
|
||||
if (REGNO (dest) == FRAME_POINTER_REGNUM)
|
||||
reg = ia64_fp_regno;
|
||||
fprintf (file, "\t.prologue 0x2, %d\n", reg);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if (insn == NULL_RTX)
|
||||
fprintf (file, "\t.prologue\n");
|
||||
}
|
||||
|
||||
/* Emit the function epilogue. */
|
||||
@ -1987,6 +2035,23 @@ ia64_add_gc_roots ()
|
||||
ggc_add_rtx_root (&ia64_compare_op1, 1);
|
||||
}
|
||||
|
||||
static void
|
||||
ia64_init_machine_status (p)
|
||||
struct function *p;
|
||||
{
|
||||
p->machine =
|
||||
(struct machine_function *) xcalloc (1, sizeof (struct machine_function));
|
||||
}
|
||||
|
||||
static void
|
||||
ia64_mark_machine_status (p)
|
||||
struct function *p;
|
||||
{
|
||||
ggc_mark_rtx (p->machine->ia64_eh_epilogue_sp);
|
||||
ggc_mark_rtx (p->machine->ia64_eh_epilogue_bsp);
|
||||
}
|
||||
|
||||
|
||||
/* Handle TARGET_OPTIONS switches. */
|
||||
|
||||
void
|
||||
@ -1997,6 +2062,9 @@ ia64_override_options ()
|
||||
|
||||
ia64_section_threshold = g_switch_set ? g_switch_value : IA64_DEFAULT_GVALUE;
|
||||
|
||||
init_machine_status = ia64_init_machine_status;
|
||||
mark_machine_status = ia64_mark_machine_status;
|
||||
|
||||
ia64_add_gc_roots ();
|
||||
}
|
||||
|
||||
@ -2445,6 +2513,9 @@ rtx_needs_barrier (x, flags, pred)
|
||||
break;
|
||||
case 19: /* fetchadd_acq */
|
||||
break;
|
||||
case 20: /* mov = ar.bsp */
|
||||
break;
|
||||
|
||||
default:
|
||||
abort ();
|
||||
}
|
||||
@ -2485,6 +2556,10 @@ rtx_needs_barrier (x, flags, pred)
|
||||
need_barrier |= rws_access_reg (i, new_flags, pred);
|
||||
break;
|
||||
|
||||
case 5: /* set_bsp */
|
||||
need_barrier = 1;
|
||||
break;
|
||||
|
||||
default:
|
||||
abort ();
|
||||
}
|
||||
@ -2749,6 +2824,232 @@ ia64_encode_section_info (decl)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Output assmebly directives for prologue regions. */
|
||||
|
||||
static int spill_offset;
|
||||
static int sp_offset;
|
||||
static int spill_offset_emitted = 1;
|
||||
static rtx tmp_reg = NULL_RTX;
|
||||
static int tmp_saved = -1;
|
||||
|
||||
|
||||
/* This function processes a SET pattern looking for specific patterns
|
||||
which result in emitting an assembly directive required for unwinding. */
|
||||
static int
|
||||
process_set (asm_out_file, pat)
|
||||
FILE *asm_out_file;
|
||||
rtx pat;
|
||||
{
|
||||
rtx src = SET_SRC (pat);
|
||||
rtx dest = SET_DEST (pat);
|
||||
static rtx frame_reg = NULL_RTX;
|
||||
static int frame_size = 0;
|
||||
|
||||
/* Look for the ALLOC insn. reg = alloc .... */
|
||||
if (GET_CODE (src) == UNSPEC_VOLATILE && XINT (src, 1) == 0
|
||||
&& GET_CODE (dest) == REG && GR_REGNO_P (REGNO (dest)))
|
||||
{
|
||||
/* Assume this is a stack allocate insn. */
|
||||
fprintf (asm_out_file, "\t.save ar.pfs, r%d\n",
|
||||
REGNO (dest) + ia64_input_regs);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* look for SP = .... */
|
||||
if (GET_CODE (dest) == REG && REGNO (dest) == STACK_POINTER_REGNUM)
|
||||
{
|
||||
if (GET_CODE (src) == PLUS)
|
||||
{
|
||||
rtx op0 = XEXP (src, 0);
|
||||
rtx op1 = XEXP (src, 1);
|
||||
if (op0 == dest && GET_CODE (op1) == CONST_INT)
|
||||
{
|
||||
fprintf (asm_out_file, "\t.fframe %d\n", -INTVAL (op1));
|
||||
frame_size = INTVAL (op1);
|
||||
return 1;
|
||||
}
|
||||
else
|
||||
if (op0 == dest && GET_CODE (op1) == REG)
|
||||
{
|
||||
fprintf (asm_out_file, "\t.vframe r%d\n", REGNO (op1));
|
||||
frame_size = 0;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* Look for a frame offset. */
|
||||
if (GET_CODE (dest) == REG)
|
||||
{
|
||||
if (GET_CODE (src) == PLUS)
|
||||
{
|
||||
rtx op0 = XEXP (src, 0);
|
||||
rtx op1 = XEXP (src, 1);
|
||||
if (GET_CODE (op0) == REG && REGNO (op0) == FRAME_POINTER_REGNUM
|
||||
&& GET_CODE (op1) == CONST_INT)
|
||||
{
|
||||
sp_offset = -frame_size + INTVAL (op1);
|
||||
spill_offset = INTVAL (op1);
|
||||
spill_offset_emitted = 0;
|
||||
frame_reg = dest;
|
||||
/* We delay issuing the spill offset since we might
|
||||
be saving non-spill things off this register,
|
||||
thus adjusting its offset before a spill is seen. */
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Register move we need to look at. */
|
||||
if (GET_CODE (dest) == REG && GET_CODE (src) == REG)
|
||||
{
|
||||
int regno = REGNO (src);
|
||||
if (BR_REGNO_P (regno))
|
||||
{
|
||||
/* Saving return address pointer. */
|
||||
if (regno == BR_REG (0))
|
||||
{
|
||||
fprintf (asm_out_file, "\t.save rp, r%d\n",
|
||||
REGNO (dest) + ia64_input_regs);
|
||||
return 1;
|
||||
}
|
||||
/* If its br1 to br5, we copy them to temp regs, then save the
|
||||
temp reg to memory next. */
|
||||
if (regno >= BR_REG (1) && regno <= BR_REG (5))
|
||||
{
|
||||
tmp_reg = dest;
|
||||
tmp_saved = regno;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* Search for special reg moves. */
|
||||
if (GET_CODE (dest) == REG && GET_CODE (src) == UNSPEC)
|
||||
{
|
||||
int unspec_code = XINT (src, 1);
|
||||
/* Copied to a temp register, save it until we see the temp
|
||||
register stored. */
|
||||
if (unspec_code == 5 || unspec_code == 9)
|
||||
{
|
||||
tmp_reg = dest;
|
||||
tmp_saved = unspec_code;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
if (GET_CODE (dest) == MEM && GET_CODE (XEXP (dest, 0)) == POST_INC
|
||||
&& GET_CODE (XEXP (XEXP (dest, 0), 0)) == REG)
|
||||
{
|
||||
int spill_unspec = 0;
|
||||
/* We adjust the spill_offset early, so we dont miss it later. */
|
||||
spill_offset += 8;
|
||||
sp_offset += 8;
|
||||
if (GET_CODE (src) == UNSPEC)
|
||||
{
|
||||
spill_unspec = XINT (src, 1);
|
||||
/* 1 and 3 are unspecs for the GR and FR spills. */
|
||||
if (spill_unspec != 1 && spill_unspec != 3)
|
||||
spill_unspec = 0;
|
||||
}
|
||||
/* ST8 or st8.spill insn. */
|
||||
if ((GET_CODE (src) == REG) || spill_unspec != 0)
|
||||
{
|
||||
int regno;
|
||||
if (spill_unspec != 0)
|
||||
{
|
||||
regno = REGNO (XVECEXP (src, 0, 0));
|
||||
if (!spill_offset_emitted)
|
||||
{
|
||||
fprintf (asm_out_file, "\t.spill %d\n",
|
||||
/* (frame_size + 16 - spill_offset ) / 4); */
|
||||
(-(spill_offset - 8) + 16) / 4);
|
||||
spill_offset_emitted = 1;
|
||||
}
|
||||
}
|
||||
else
|
||||
regno = REGNO (src);
|
||||
|
||||
if (GR_REGNO_P (regno))
|
||||
{
|
||||
if (regno >= GR_REG (4) && regno <= GR_REG (7))
|
||||
fprintf (asm_out_file, "\t.save.g 0x%x\n",
|
||||
1 << (regno - GR_REG (4)));
|
||||
else if (tmp_reg != NULL_RTX && regno == REGNO (tmp_reg))
|
||||
{
|
||||
/* We saved a special reg to a temp reg, and now we're
|
||||
dumping it to memory. */
|
||||
tmp_reg = NULL_RTX;
|
||||
/* register 9 is ar.unat. */
|
||||
if (tmp_saved == 9)
|
||||
fprintf (asm_out_file, "\t.savesp ar.unat, %d\n",
|
||||
(sp_offset - 8) / 4);
|
||||
else if (tmp_saved == 5)
|
||||
fprintf (asm_out_file, "\t.savesp pr, %d\n",
|
||||
(sp_offset - 8) / 4);
|
||||
else if (tmp_saved >= BR_REG (1) && tmp_saved <= BR_REG (5))
|
||||
{
|
||||
/* BR regs are saved this way too. */
|
||||
fprintf (asm_out_file, "\t.save.b 0x%x\n",
|
||||
1 << (tmp_saved - BR_REG (1)));
|
||||
}
|
||||
}
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
if (FR_REGNO_P (regno))
|
||||
{
|
||||
if (regno >= FR_REG (2) && regno <= FR_REG (5))
|
||||
fprintf (asm_out_file, "\t.save.f 0x%x\n",
|
||||
1 << (regno - FR_REG (2)));
|
||||
else
|
||||
if (regno >= FR_REG (16) && regno <= FR_REG (31))
|
||||
fprintf (asm_out_file, "\t.save.gf 0x0, 0x%x\n",
|
||||
1 << (regno - FR_REG (12)));
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* This function looks at a single insn and emits any directives
|
||||
required to unwind this insn. */
|
||||
void
|
||||
process_for_unwind_directive (asm_out_file, insn)
|
||||
FILE *asm_out_file;
|
||||
rtx insn;
|
||||
{
|
||||
if ((flag_unwind_tables
|
||||
|| (flag_exceptions && !exceptions_via_longjmp))
|
||||
&& RTX_FRAME_RELATED_P (insn))
|
||||
{
|
||||
rtx code, pat;
|
||||
pat = PATTERN (insn);
|
||||
|
||||
switch (GET_CODE (pat))
|
||||
{
|
||||
case SET:
|
||||
{
|
||||
process_set (asm_out_file, pat);
|
||||
break;
|
||||
}
|
||||
case PARALLEL:
|
||||
{
|
||||
int par_index;
|
||||
int limit = XVECLEN (pat, 0);
|
||||
for (par_index = 0; par_index < limit; par_index++)
|
||||
{
|
||||
rtx x = XVECEXP (pat, 0, par_index);
|
||||
if (GET_CODE (x) == SET)
|
||||
process_set (asm_out_file, x);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define def_builtin(name, type, code) \
|
||||
builtin_function ((name), (type), (code), BUILT_IN_MD, NULL_PTR)
|
||||
|
||||
@ -2115,6 +2115,71 @@ do { \
|
||||
fprintf (FILE, "\n"); \
|
||||
} while (0)
|
||||
|
||||
/* This is how to output an assembler line defining a `char' constant
|
||||
to an xdata segment. */
|
||||
|
||||
#define ASM_OUTPUT_XDATA_CHAR(FILE, SECTION, VALUE) \
|
||||
do { \
|
||||
fprintf (FILE, "\t.xdata1\t\"%s\", ", SECTION); \
|
||||
output_addr_const (FILE, (VALUE)); \
|
||||
fprintf (FILE, "\n"); \
|
||||
} while (0)
|
||||
|
||||
/* This is how to output an assembler line defining a `short' constant
|
||||
to an xdata segment. */
|
||||
|
||||
#define ASM_OUTPUT_XDATA_SHORT(FILE, SECTION, VALUE) \
|
||||
do { \
|
||||
fprintf (FILE, "\t.xdata2\t\"%s\", ", SECTION); \
|
||||
output_addr_const (FILE, (VALUE)); \
|
||||
fprintf (FILE, "\n"); \
|
||||
} while (0)
|
||||
|
||||
/* This is how to output an assembler line defining an `int' constant
|
||||
to an xdata segment. We also handle symbol output here. */
|
||||
|
||||
/* ??? For ILP32, also need to handle function addresses here. */
|
||||
|
||||
#define ASM_OUTPUT_XDATA_INT(FILE, SECTION, VALUE) \
|
||||
do { \
|
||||
fprintf (FILE, "\t.xdata4\t\"%s\", ", SECTION); \
|
||||
output_addr_const (FILE, (VALUE)); \
|
||||
fprintf (FILE, "\n"); \
|
||||
} while (0)
|
||||
|
||||
/* This is how to output an assembler line defining a `long' constant
|
||||
to an xdata segment. We also handle symbol output here. */
|
||||
|
||||
#define ASM_OUTPUT_XDATA_DOUBLE_INT(FILE, SECTION, VALUE) \
|
||||
do { \
|
||||
fprintf (FILE, "\t.xdata8\t\"%s\", ", SECTION); \
|
||||
if (GET_CODE (VALUE) == SYMBOL_REF) \
|
||||
{ \
|
||||
if (SYMBOL_REF_FLAG (VALUE)) \
|
||||
fprintf (FILE, "@fptr("); \
|
||||
else \
|
||||
fprintf (FILE, "@segrel("); \
|
||||
} \
|
||||
output_addr_const (FILE, (VALUE)); \
|
||||
if (GET_CODE (VALUE) == SYMBOL_REF) \
|
||||
fprintf (FILE, ")"); \
|
||||
fprintf (FILE, "\n"); \
|
||||
} while (0)
|
||||
|
||||
|
||||
/* Output EH data to the unwind segment. */
|
||||
#define ASM_OUTPUT_EH_CHAR(FILE, VALUE) \
|
||||
ASM_OUTPUT_XDATA_CHAR(FILE, ".IA_64.unwind_info", VALUE)
|
||||
|
||||
#define ASM_OUTPUT_EH_SHORT(FILE, VALUE) \
|
||||
ASM_OUTPUT_XDATA_SHORT(FILE, ".IA_64.unwind_info", VALUE)
|
||||
|
||||
#define ASM_OUTPUT_EH_INT(FILE, VALUE) \
|
||||
ASM_OUTPUT_XDATA_INT(FILE, ".IA_64.unwind_info", VALUE)
|
||||
|
||||
#define ASM_OUTPUT_EH_DOUBLE_INT(FILE, VALUE) \
|
||||
ASM_OUTPUT_XDATA_DOUBLE_INT(FILE, ".IA_64.unwind_info", VALUE)
|
||||
|
||||
/* A C statement to output to the stdio stream STREAM an assembler instruction
|
||||
to assemble a single byte containing the number VALUE. */
|
||||
|
||||
@ -2453,7 +2518,7 @@ do { \
|
||||
|
||||
You should define this symbol if your target supports DWARF 2 frame unwind
|
||||
information and the default definition does not work. */
|
||||
/* #define EH_FRAME_SECTION_ASM_OP */
|
||||
#define EH_FRAME_SECTION_ASM_OP ".section\t.IA_64.unwind,\"aw\""
|
||||
|
||||
/* A C expression that is nonzero if the normal exception table output should
|
||||
be omitted.
|
||||
@ -2739,6 +2804,21 @@ do { \
|
||||
|
||||
#define ISSUE_RATE 3
|
||||
|
||||
#define IA64_UNWIND_INFO 1
|
||||
#define HANDLER_SECTION fprintf (asm_out_file, "\t.personality\t__ia64_personality_v1\n\t.handlerdata\n");
|
||||
#define IA64_UNWIND_EMIT(f,i) process_for_unwind_directive (f,i)
|
||||
|
||||
/* This function contains machine specific function data. */
|
||||
struct machine_function
|
||||
{
|
||||
/* The new stack pointer when unwinding from EH. */
|
||||
struct rtx_def* ia64_eh_epilogue_sp;
|
||||
|
||||
/* The new bsp value when unwinding from EH. */
|
||||
struct rtx_def* ia64_eh_epilogue_bsp;
|
||||
};
|
||||
|
||||
|
||||
enum ia64_builtins
|
||||
{
|
||||
IA64_BUILTIN_SYNCHRONIZE,
|
||||
|
||||
@ -3083,6 +3083,33 @@
|
||||
"mov ar.unat = %0"
|
||||
[(set_attr "type" "M")])
|
||||
|
||||
(define_insn "bsp_value"
|
||||
[(set (match_operand:DI 0 "register_operand" "=r")
|
||||
(unspec:DI [(const_int 0)] 20))]
|
||||
""
|
||||
"mov %0 = ar.bsp"
|
||||
[(set_attr "type" "I")])
|
||||
|
||||
(define_insn "set_bsp"
|
||||
[(unspec_volatile [(const_int 0)] 5)
|
||||
(use (match_operand:DI 0 "register_operand" "r"))]
|
||||
""
|
||||
"flushrs\; \
|
||||
mov r19=ar.rsc\; \
|
||||
;;\; \
|
||||
and r19=0x1c,r19\; \
|
||||
;;\; \
|
||||
mov ar.rsc=r19\; \
|
||||
;;\; \
|
||||
mov ar.bspstore=%0\; \
|
||||
;;\; \
|
||||
or r19=0x3,r19\; \
|
||||
;;\; \
|
||||
loadrs\; \
|
||||
invala\; \
|
||||
;;\; \
|
||||
mov ar.rsc=r19\;"
|
||||
[(set_attr "type" "I")])
|
||||
|
||||
;; ::::::::::::::::::::
|
||||
;; ::
|
||||
@ -3166,6 +3193,34 @@
|
||||
DONE;
|
||||
}")
|
||||
|
||||
(define_expand "eh_epilogue"
|
||||
[(use (match_operand:DI 0 "register_operand" "r"))
|
||||
(use (match_operand:DI 1 "register_operand" "r"))
|
||||
(use (match_operand:DI 2 "register_operand" "r"))]
|
||||
""
|
||||
"
|
||||
{
|
||||
rtx bsp = gen_rtx_REG (Pmode, 10);
|
||||
rtx sp = gen_rtx_REG (Pmode, 9);
|
||||
|
||||
if (GET_CODE (operands[0]) != REG || REGNO (operands[0]) != 10)
|
||||
{
|
||||
emit_move_insn (bsp, operands[0]);
|
||||
operands[0] = bsp;
|
||||
}
|
||||
if (GET_CODE (operands[2]) != REG || REGNO (operands[2]) != 9)
|
||||
{
|
||||
emit_move_insn (sp, operands[2]);
|
||||
operands[2] = sp;
|
||||
}
|
||||
emit_insn (gen_rtx_USE (VOIDmode, sp));
|
||||
emit_insn (gen_rtx_USE (VOIDmode, bsp));
|
||||
|
||||
cfun->machine->ia64_eh_epilogue_sp = sp;
|
||||
cfun->machine->ia64_eh_epilogue_bsp = bsp;
|
||||
|
||||
}")
|
||||
|
||||
;; This flushes at least 64 bytes starting from the address pointed
|
||||
;; to by operand[0].
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user