/* DWARF2 EH unwinding support for SPARC Linux.
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/* DWARF2 EH unwinding support for SPARC Linux.
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Copyright 2004, 2005 Free Software Foundation, Inc.
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Copyright 2004, 2005 Free Software Foundation, Inc.
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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any later version.
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In addition to the permissions in the GNU General Public License, the
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file with other programs, and to distribute
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compiled version of this file with other programs, and to distribute
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those programs without any restriction coming from the use of this
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those programs without any restriction coming from the use of this
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file. (The General Public License restrictions do apply in other
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file. (The General Public License restrictions do apply in other
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respects; for example, they cover modification of the file, and
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respects; for example, they cover modification of the file, and
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distribution when not linked into another program.)
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distribution when not linked into another program.)
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GCC is distributed in the hope that it will be useful,
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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Boston, MA 02110-1301, USA. */
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/* Do code reading to identify a signal frame, and set the frame
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/* Do code reading to identify a signal frame, and set the frame
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state data appropriately. See unwind-dw2.c for the structs. */
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state data appropriately. See unwind-dw2.c for the structs. */
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/* Handle multilib correctly. */
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/* Handle multilib correctly. */
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#if defined(__arch64__)
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#if defined(__arch64__)
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/* 64-bit SPARC version */
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/* 64-bit SPARC version */
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#define MD_FALLBACK_FRAME_STATE_FOR sparc64_fallback_frame_state
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#define MD_FALLBACK_FRAME_STATE_FOR sparc64_fallback_frame_state
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static _Unwind_Reason_Code
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static _Unwind_Reason_Code
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sparc64_fallback_frame_state (struct _Unwind_Context *context,
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sparc64_fallback_frame_state (struct _Unwind_Context *context,
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_Unwind_FrameState *fs)
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_Unwind_FrameState *fs)
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{
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{
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unsigned int *pc = context->ra;
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unsigned int *pc = context->ra;
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long new_cfa, i;
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long new_cfa, i;
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long regs_off, fpu_save_off;
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long regs_off, fpu_save_off;
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long this_cfa, fpu_save;
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long this_cfa, fpu_save;
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if (pc[0] != 0x82102065 /* mov NR_rt_sigreturn, %g1 */
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if (pc[0] != 0x82102065 /* mov NR_rt_sigreturn, %g1 */
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|| pc[1] != 0x91d0206d) /* ta 0x6d */
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|| pc[1] != 0x91d0206d) /* ta 0x6d */
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return _URC_END_OF_STACK;
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return _URC_END_OF_STACK;
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regs_off = 192 + 128;
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regs_off = 192 + 128;
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fpu_save_off = regs_off + (16 * 8) + (3 * 8) + (2 * 4);
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fpu_save_off = regs_off + (16 * 8) + (3 * 8) + (2 * 4);
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this_cfa = (long) context->cfa;
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this_cfa = (long) context->cfa;
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new_cfa = *(long *)((context->cfa) + (regs_off + (14 * 8)));
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new_cfa = *(long *)((context->cfa) + (regs_off + (14 * 8)));
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new_cfa += 2047; /* Stack bias */
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new_cfa += 2047; /* Stack bias */
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fpu_save = *(long *)((this_cfa) + (fpu_save_off));
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fpu_save = *(long *)((this_cfa) + (fpu_save_off));
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fs->cfa_how = CFA_REG_OFFSET;
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fs->cfa_how = CFA_REG_OFFSET;
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fs->cfa_reg = 14;
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fs->cfa_reg = 14;
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fs->cfa_offset = new_cfa - (long) context->cfa;
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fs->cfa_offset = new_cfa - (long) context->cfa;
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for (i = 1; i < 16; ++i)
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for (i = 1; i < 16; ++i)
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{
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{
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fs->regs.reg[i].how = REG_SAVED_OFFSET;
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fs->regs.reg[i].how = REG_SAVED_OFFSET;
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fs->regs.reg[i].loc.offset =
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fs->regs.reg[i].loc.offset =
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this_cfa + (regs_off + (i * 8)) - new_cfa;
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this_cfa + (regs_off + (i * 8)) - new_cfa;
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}
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}
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for (i = 0; i < 16; ++i)
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for (i = 0; i < 16; ++i)
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{
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{
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fs->regs.reg[i + 16].how = REG_SAVED_OFFSET;
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fs->regs.reg[i + 16].how = REG_SAVED_OFFSET;
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fs->regs.reg[i + 16].loc.offset =
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fs->regs.reg[i + 16].loc.offset =
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this_cfa + (i * 8) - new_cfa;
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this_cfa + (i * 8) - new_cfa;
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}
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}
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if (fpu_save)
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if (fpu_save)
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{
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{
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for (i = 0; i < 64; ++i)
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for (i = 0; i < 64; ++i)
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{
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{
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if (i > 32 && (i & 0x1))
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if (i > 32 && (i & 0x1))
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continue;
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continue;
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fs->regs.reg[i + 32].how = REG_SAVED_OFFSET;
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fs->regs.reg[i + 32].how = REG_SAVED_OFFSET;
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fs->regs.reg[i + 32].loc.offset =
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fs->regs.reg[i + 32].loc.offset =
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(fpu_save + (i * 4)) - new_cfa;
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(fpu_save + (i * 4)) - new_cfa;
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}
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}
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}
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}
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/* Stick return address into %g0, same trick Alpha uses. */
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/* Stick return address into %g0, same trick Alpha uses. */
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fs->regs.reg[0].how = REG_SAVED_OFFSET;
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fs->regs.reg[0].how = REG_SAVED_OFFSET;
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fs->regs.reg[0].loc.offset =
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fs->regs.reg[0].loc.offset =
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this_cfa + (regs_off + (16 * 8) + 8) - new_cfa;
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this_cfa + (regs_off + (16 * 8) + 8) - new_cfa;
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fs->retaddr_column = 0;
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fs->retaddr_column = 0;
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return _URC_NO_REASON;
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return _URC_NO_REASON;
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}
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}
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#else
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#else
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/* 32-bit SPARC version */
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/* 32-bit SPARC version */
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#define MD_FALLBACK_FRAME_STATE_FOR sparc_fallback_frame_state
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#define MD_FALLBACK_FRAME_STATE_FOR sparc_fallback_frame_state
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static _Unwind_Reason_Code
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static _Unwind_Reason_Code
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sparc_fallback_frame_state (struct _Unwind_Context *context,
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sparc_fallback_frame_state (struct _Unwind_Context *context,
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_Unwind_FrameState *fs)
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_Unwind_FrameState *fs)
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{
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{
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unsigned int *pc = context->ra;
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unsigned int *pc = context->ra;
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int new_cfa, i, oldstyle;
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int new_cfa, i, oldstyle;
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int regs_off, fpu_save_off;
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int regs_off, fpu_save_off;
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int fpu_save, this_cfa;
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int fpu_save, this_cfa;
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if (pc[1] != 0x91d02010) /* ta 0x10 */
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if (pc[1] != 0x91d02010) /* ta 0x10 */
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return _URC_END_OF_STACK;
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return _URC_END_OF_STACK;
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if (pc[0] == 0x821020d8) /* mov NR_sigreturn, %g1 */
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if (pc[0] == 0x821020d8) /* mov NR_sigreturn, %g1 */
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oldstyle = 1;
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oldstyle = 1;
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else if (pc[0] == 0x82102065) /* mov NR_rt_sigreturn, %g1 */
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else if (pc[0] == 0x82102065) /* mov NR_rt_sigreturn, %g1 */
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oldstyle = 0;
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oldstyle = 0;
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else
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else
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return _URC_END_OF_STACK;
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return _URC_END_OF_STACK;
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if (oldstyle)
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if (oldstyle)
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{
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{
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regs_off = 96;
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regs_off = 96;
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fpu_save_off = regs_off + (4 * 4) + (16 * 4);
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fpu_save_off = regs_off + (4 * 4) + (16 * 4);
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}
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}
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else
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else
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{
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{
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regs_off = 96 + 128;
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regs_off = 96 + 128;
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fpu_save_off = regs_off + (4 * 4) + (16 * 4) + (2 * 4);
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fpu_save_off = regs_off + (4 * 4) + (16 * 4) + (2 * 4);
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}
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}
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this_cfa = (int) context->cfa;
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this_cfa = (int) context->cfa;
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new_cfa = *(int *)((context->cfa) + (regs_off+(4*4)+(14 * 4)));
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new_cfa = *(int *)((context->cfa) + (regs_off+(4*4)+(14 * 4)));
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fpu_save = *(int *)((this_cfa) + (fpu_save_off));
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fpu_save = *(int *)((this_cfa) + (fpu_save_off));
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fs->cfa_how = CFA_REG_OFFSET;
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fs->cfa_how = CFA_REG_OFFSET;
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fs->cfa_reg = 14;
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fs->cfa_reg = 14;
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fs->cfa_offset = new_cfa - (int) context->cfa;
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fs->cfa_offset = new_cfa - (int) context->cfa;
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for (i = 1; i < 16; ++i)
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for (i = 1; i < 16; ++i)
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{
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{
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if (i == 14)
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if (i == 14)
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continue;
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continue;
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fs->regs.reg[i].how = REG_SAVED_OFFSET;
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fs->regs.reg[i].how = REG_SAVED_OFFSET;
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fs->regs.reg[i].loc.offset =
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fs->regs.reg[i].loc.offset =
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this_cfa + (regs_off+(4 * 4)+(i * 4)) - new_cfa;
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this_cfa + (regs_off+(4 * 4)+(i * 4)) - new_cfa;
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}
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}
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for (i = 0; i < 16; ++i)
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for (i = 0; i < 16; ++i)
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{
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{
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fs->regs.reg[i + 16].how = REG_SAVED_OFFSET;
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fs->regs.reg[i + 16].how = REG_SAVED_OFFSET;
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fs->regs.reg[i + 16].loc.offset =
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fs->regs.reg[i + 16].loc.offset =
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this_cfa + (i * 4) - new_cfa;
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this_cfa + (i * 4) - new_cfa;
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}
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}
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if (fpu_save)
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if (fpu_save)
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{
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{
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for (i = 0; i < 32; ++i)
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for (i = 0; i < 32; ++i)
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{
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{
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fs->regs.reg[i + 32].how = REG_SAVED_OFFSET;
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fs->regs.reg[i + 32].how = REG_SAVED_OFFSET;
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fs->regs.reg[i + 32].loc.offset =
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fs->regs.reg[i + 32].loc.offset =
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(fpu_save + (i * 4)) - new_cfa;
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(fpu_save + (i * 4)) - new_cfa;
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}
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}
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}
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}
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/* Stick return address into %g0, same trick Alpha uses. */
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/* Stick return address into %g0, same trick Alpha uses. */
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fs->regs.reg[0].how = REG_SAVED_OFFSET;
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fs->regs.reg[0].how = REG_SAVED_OFFSET;
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fs->regs.reg[0].loc.offset = this_cfa+(regs_off+4)-new_cfa;
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fs->regs.reg[0].loc.offset = this_cfa+(regs_off+4)-new_cfa;
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fs->retaddr_column = 0;
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fs->retaddr_column = 0;
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return _URC_NO_REASON;
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return _URC_NO_REASON;
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}
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}
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#endif
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#endif
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