49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/* Perform a `longjmp' on a Mach thread_state. Alpha version.
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Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <hurd/signal.h>
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#include <setjmp.h>
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#include <mach/thread_status.h>
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/* Set up STATE to do the equivalent of `longjmp (ENV, VAL);'. */
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void
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_hurd_longjmp_thread_state (void *state, jmp_buf env, int val)
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{
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struct alpha_thread_state *const ts = state;
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ts->r9 = env[0].__jmpbuf[JB_S0];
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ts->r10 = env[0].__jmpbuf[JB_S1];
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ts->r11 = env[0].__jmpbuf[JB_S2];
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ts->r12 = env[0].__jmpbuf[JB_S3];
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ts->r13 = env[0].__jmpbuf[JB_S4];
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ts->r13 = env[0].__jmpbuf[JB_S5];
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ts->pc = env[0].__jmpbuf[JB_PC];
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ts->r15 = env[0].__jmpbuf[JB_FP];
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ts->r30 = env[0].__jmpbuf[JB_SP];
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ts->r0 = val ?: 1;
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/* XXX
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To mimic longjmp we ought to restore some fp registers too.
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But those registers are in struct alpha_float_state.
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The only use of this is in fork, and it probably won't matter.
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*/
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}
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