* unwind-dw2.c (SIGNAL_FRAME_BIT, EXTENDED_CONTEXT_BIT): Define.
(struct _Unwind_Context): Rename args_size to flags, remove
signal_frame field, add a new args_size field and version field.
(_Unwind_IsSignalFrame, _Unwind_SetSignalFrame,
_Unwind_IsExtendedContext): New inline functions.
(_Unwind_GetGR, _Unwind_SetGR, _Unwind_GetGRPtr, _Unwind_SetGRPtr):
Assume by_value array is only present if _Unwind_IsExtendedContext.
(_Unwind_GetIPInfo, execute_cfa_program, uw_frame_state_for): Use
_Unwind_IsSignalFrame.
(__frame_state_for): Initialize context.flags to EXTENDED_CONTEXT_BIT.
(uw_update_context_1): Use _Unwind_SetSignalFrame.
(uw_init_context_1): Initialize context->flags to
EXTENDED_CONTEXT_BIT.
* config/rs6000/linux-unwind.h (frob_update_context): Use
_Unwind_SetSignalFrame.
From-SVN: r120406
* gcc/unwind-dw2.h: Move cfa-related variables into
struct frame_state_reg_info to ensure that the CFA is properly
handled when executing DW_CFA_{remember,restore}_state.
* gcc/unwind-dw2.c, gcc/config/alpha/linux-unwind.h,
gcc/config/alpha/vms-unwind.h, gcc/config/s390/tpf-unwind.h
gcc/config/s390/linux-unwind.h, gcc/config/sparc/linux-unwind.h
gcc/config/i386/linux-unwind.h, gcc/config/sh/linux-unwind.h
gcc/config/rs6000/linux-unwind.h,
gcc/config/rs6000/darwin-fallback.c, gcc/config/pa/linux-unwind.h,
gcc/config/pa/hpux-unwind.h, gcc/config/mips/linux-unwind.h:
Modify to use new cfa_* fields.
From-SVN: r118068
* unwind-dw2.c: Add declarations for uw_update_context and
uw_frame_state_for.
* pa/hpux-unwind.h (pa_fallback_frame_state): When an export stub is
detected, advance frame state and context once to skip over stub.
From-SVN: r113865
* dwarf2out.c (dw_cfi_oprnd_struct): Reduce dw_cfi_reg_num to int.
(lookup_cfa_1): Apply data alignment to DW_CFA_def_cfa_offset_sf
and DW_CFA_def_cfa_sf.
(def_cfa_1): Use DW_CFA_def_cfa_offset_sf with negative values.
(dbx_reg_number): Don't assert particular registers here.
(based_loc_descr): ... do it here instead. Fold in ...
(eliminate_reg_to_offset): ... this function.
(compute_frame_pointer_to_cfa_displacement): Fold in the effects
of eliminate_reg_to_offset; use FRAME_POINTER_CFA_OFFSET.
* unwind-dw2.c (execute_cfa_program): Apply data align factor
to DW_CFA_def_cfa_offset_sf and DW_CFA_def_cfa_sf.
* function.c (instantiate_new_reg): Use FRAME_POINTER_CFA_OFFSET.
(instantiate_virtual_regs): Likewise.
* var-tracking.c (adjust_stack_reference): Likewise.
* doc/tm.texi (FRAME_POINTER_CFA_OFFSET): New.
From-SVN: r107154
2004-06-28 Geoffrey Keating <geoffk@apple.com>
Andreas Tobler <a.tobler@schweiz.ch>
PR 15813
* dwarf2out.c (reg_save): Output DW_CFA_same_value when a
register is saved in itself.
(initial_return_save): If the return address is a register,
it's already there, don't bother to mention it in the CFI.
(struct queued_reg_save): Add field saved_reg.
(struct reg_saved_in_data): New.
(regs_saved_in_regs): New.
(num_regs_saved_in_regs): New.
(queue_reg_save): Add extra parameter to specify register saved
in register. Remove duplicate entries from queue. Add comment
for function.
(flush_queued_reg_saves): Handle registers saved in registers.
Update regs_saved_in_regs. Add comment for function.
(clobbers_queued_reg_save): Add comment for function. Allow
for regs_saved_in_regs.
(reg_saved_in): New.
(dwarf2out_frame_debug_expr): Handle saving registers in other
registers.
(dwarf2out_frame_debug): Reset regs_saved_in_regs.
* unwind-dw2.c (execute_cfa_program): Correct handling of
DW_CFA_same_value. Add FIXME comment about incorrect implementation
of DW_CFA_restore_extended.
* config/rs6000/rs6000.c (rs6000_emit_prologue): Let
dwarf2out_frame_debug_expr see instructions that save registers
in other registers or save those other registers in memory.
* unwind-dw2.c (DWARF_FRAME_REGISTERS): Move to unwind-dw2.h.
(_Unwind_FrameState): Likewise.
* unwind-dw2.h: New.
* Makefile.in (LIB2ADDEHDEP): Add unwind-dw2.h.
* config/rs6000/darwin-fallback.c: New file.
* config/rs6000/darwin.h (MD_FALLBACK_FRAME_STATE_FOR): Define.
* config/rs6000/t-darwin (LIB2FUNCS_EXTRA): Add darwin-fallback.o.
Index: gcc/testsuite/ChangeLog
2004-06-26 Geoffrey Keating <geoffk@apple.com>
Andreas Tobler <a.tobler@schweiz.ch>
* gcc.dg/cleanup-10.c: Run on all Linux platforms and powerpc-darwin.
Use SA_RESETHAND rather than SA_ONESHOT. Trap SIGBUS as well
as SIGSEGV.
* gcc.dg/cleanup-11.c: Likewise.
* gcc.dg/cleanup-8.c: Likewise.
* gcc.dg/cleanup-9.c: Likewise.
* gcc.dg/cleanup-5.c: Run on all platforms.
Index: libjava/ChangeLog
2004-06-26 Geoffrey Keating <geoffk@apple.com>
Andreas Tobler <a.tobler@schweiz.ch>
* configure.host (powerpc-*-darwin*): New case, define
can_unwind_signal.
* configure.in (*-*-darwin*): New case, point to darwin-signal.h.
* configure: Regenerate.
* include/darwin-signal.h: New.
Co-Authored-By: Andreas Tobler <a.tobler@schweiz.ch>
From-SVN: r83953
* unwind-dw2.c (_Unwind_FindEnclosingFunction): Constify variable.
(uw_frame_state_for): Constify variables.
(extract_cie_info): Constify first argument.
* unwind-dw2-fde-darwin.c: Adjust prototype of
_Unwind_Find_registered_FDE for recent changes.
(examine_objects): Constify return value and local variable result.
(_Unwind_Find_FDE): Constify return value and local variable ret.
From-SVN: r73172
* unwind-dw2.c (MD_FROB_UPDATE_CONTEXT): Define.
(uw_update_context_1): Use it.
* config/rs6000/rs6000.c (insn_after_throw): Remove.
(rs6000_aix_emit_builtin_unwind_init): Save $r2 to its location
in parent frame if _Unwind_* called directly instead of through
.plt.
(rs6000_emit_eh_toc_restore): Remove.
(rs6000_emit_prologue): Update stack pointer before doing any saving
if current_function_calls_eh_return. Generate unwind info for $r2.
(rs6000_emit_epilogue): Restore stack pointer after doing all
restoring if current_function_calls_eh_return. Restore $r2.
* config/rs6000/rs6000-protos.h (rs6000_emit_eh_toc_restore): Remove.
* config/rs6000/rs6000.md (eh_return): Remove call to
rs6000_emit_eh_toc_restore.
* config/rs6000/linux64.h (MD_FROB_UPDATE_CONTEXT): Define.
* config/rs6000/aix.h (MD_FROB_UPDATE_CONTEXT): Define.
* gcc.dg/cleanup-8.c: New test.
* gcc.dg/cleanup-9.c: New test.
From-SVN: r69450
2003-07-15 J"orn Rennecke <joern.rennecke@superh.com>
* dwarf2out.c (expand_builtin_init_dwarf_reg_sizes):
If DWARF_FRAME_RETURN_COLUMN doesn't have a register mode, use Pmode.
2003-07-15 J"orn Rennecke <joern.rennecke@superh.com>
Richard Henderson <rth@redhat.com>
* unwind-dw2.c (_Unwind_GetGR): Use dwarf_reg_size_table
to decide if to access a _Unwind_Ptr or a _Unwind_Word.
(_Unwind_SetGR): Likewise.
(_Unwind_GetPtr, _Unwind_SetSpColumn): New functions.
(Unwind_SpTmp): New typedef.
(uw_update_context_1): Use _Unwind_SetSpColumn and _Unwind_GetPtr.
(uw_update_context): Use _Unwind_GetPtr.
(init_dwarf_reg_size_table): Move above uw_init_context_1.
(uw_init_context_1): Initialize dwarf_reg_size_table if necessary.
Use _Unwind_SetSpColumn.
(uw_install_context_1): Don't initialize dwarf_reg_size_table.
Use _Unwind_GetPtr.
Co-Authored-By: Richard Henderson <rth@redhat.com>
From-SVN: r69424
* except.c (EH_RETURN_STACKADJ_RTX): Do not define.
(EH_RETURN_HANDLER_RTX): Likewise.
(expand_builtin_eh_return): Do not copy stack adjustment
if EH_RETURN_STACKADJ_RTX is not defined.
(expand_eh_return): Likewise. Also, do not pass stack
adjustment as argument to the eh_return pattern.
* except.h (MUST_USE_SJLJ_EXCEPTIONS): Do not define just
because EH_RETURN_STACKADJ_RTX is not defined.
* unwind-dw.c (uw_update_context_1): If EH_RETURN_STACKADJ_RTX
is not defined, treat stack pointer like a regular register.
(uw_init_context_1): Set up fake initial stack pointer register.
(uw_install_context_1): Do not compute stack adjustment if
EH_RETURN_STACKADJ_RTX is not defined.
* config/i386/i386.md ("eh_return"): Remove first argument.
* config/mips/mips.md ("eh_return"): Likewise.
* config/rs6000/rs6000.md ("eh_return"): Likewise.
* config/sh/sh.md ("eh_return"): Likewise.
* config/s390/s390.h (EH_RETURN_STACKADJ_RTX): Remove.
From-SVN: r66672
* unwind-dw2.c (uw_update_context_1): Only set cfa as sp if
previous frame didn't save sp. Clear sp for next frame.
(uw_install_context_1): Honor saved sp from frame.
From-SVN: r66526
Kaveh R. Ghazi
Geoffrey Keating
Andreas Krebbel
Jakub Jelinek
J"orn Rennecke
Nathan Froyd
John David Anglin
Kazu Hirata
Richard Henderson
Daniel Jacobowitz
Kelley Cook
Nathan Sidwell
Alan Modra
H.J. Lu
Kazu Hirata
Ulrich Weigand
Paul Brook
Andreas Jaeger
Daniel Jacobowitz
J"orn Rennecke
Richard Sandiford
Kean Johnston
Aldy Hernandez
Benjamin Kosnik
Zack Weinberg
Andrew Haley
Jason Merrill
Kazu Hirata