mirror of
git://gcc.gnu.org/git/gcc.git
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3951562dfa
2000-05-15 Andrew Haley <aph@cygnus.com>
* include/ppc-signal.h: New file.
From-SVN: r33932
116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
// ppc-signal.h - Catch runtime signals and turn them into exceptions.
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/* Copyright (C) 2000 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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#ifndef JAVA_SIGNAL_H
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#define JAVA_SIGNAL_H 1
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#include <signal.h>
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#include <ucontext.h>
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#define HANDLE_SEGV 1
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#undef HANDLE_FPE
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#define SIGNAL_HANDLER(_name) \
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__asm ("\t.section\t\".text\"\n" \
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"\t.align 2\n" \
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"_Jv_" #_name ":\n" \
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"\tmr 3, 1\n" \
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"\tb _Jv_stub_" #_name "\n"); \
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extern "C" void _Jv_##_name (int _dummy); \
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extern "C" void _Jv_stub_##_name (char *_sp) \
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class java::lang::Throwable;
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// Unwind the stack to the point at which the signal was generated and
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// then throw an exception.
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#define MAKE_THROW_FRAME(_exception) \
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do \
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{ \
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struct sigcontext_struct *_context \
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= (struct sigcontext_struct *)(_sp + __SIGNAL_FRAMESIZE); \
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long int regs [34]; \
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memcpy (regs, &_context->regs->gpr[0], 32 * sizeof (long int)); \
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regs[32] = _context->regs->nip + sizeof (long int); \
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regs[33] = _context->regs->link; \
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\
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__asm volatile ( \
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"\tmr 31,%0\n" \
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"\tmr 3,%1 # exception to throw\n" \
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"\tlwz 0,128(31) # ip\n" \
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"\tmtlr 0\n" \
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"\tlwz 1,4(31) # previous r1\n" \
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"\tlwz 0,132(31) # previous lr\n" \
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"\tlwz 2,0(1) # previous previous r1\n" \
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"\tstw 0,4(2) # save previous lr\n" \
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"\tlwz 0,0(31)\n" \
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"\tlwz 2,8(31)\n" \
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"\tlwz 4,16(31)\n" \
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"\tlwz 5,20(31)\n" \
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"\tlwz 6,24(31)\n" \
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"\tlwz 7,28(31)\n" \
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"\tlwz 8,32(31)\n" \
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"\tlwz 9,36(31)\n" \
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"\tlwz 10,40(31)\n" \
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"\tlwz 11,44(31)\n" \
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"\tlwz 12,48(31)\n" \
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"\tlwz 13,52(31)\n" \
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"\tlwz 14,56(31)\n" \
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"\tlwz 15,60(31)\n" \
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"\tlwz 16,64(31)\n" \
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"\tlwz 17,68(31)\n" \
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"\tlwz 18,72(31)\n" \
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"\tlwz 19,76(31)\n" \
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"\tlwz 20,80(31)\n" \
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"\tlwz 21,84(31)\n" \
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"\tlwz 22,88(31)\n" \
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"\tlwz 23,92(31)\n" \
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"\tlwz 24,96(31)\n" \
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"\tlwz 25,100(31)\n" \
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"\tlwz 26,104(31)\n" \
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"\tlwz 27,108(31)\n" \
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"\tlwz 28,112(31)\n" \
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"\tlwz 29,116(31)\n" \
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"\tlwz 30,120(31)\n" \
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"\tlwz 31,124(31)\n" \
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"\tb _Jv_ThrowSignal\n" \
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: : "r"(regs), "r"(_exception) \
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: "r31", "r3"); \
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} \
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while (0)
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#define INIT_SEGV \
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do \
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{ \
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nullp = new java::lang::NullPointerException (); \
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struct sigaction act; \
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act.sa_handler = _Jv_catch_segv; \
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sigemptyset (&act.sa_mask); \
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act.sa_flags = 0; \
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__sigaction (SIGSEGV, &act, NULL); \
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} \
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while (0)
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#define INIT_FPE \
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do \
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{ \
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arithexception = new java::lang::ArithmeticException \
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(JvNewStringLatin1 ("/ by zero")); \
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struct sigaction act; \
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act.sa_handler = _Jv_catch_fpe; \
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sigemptyset (&act.sa_mask); \
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act.sa_flags = 0; \
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__sigaction (SIGFPE, &act, NULL); \
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} \
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while (0)
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#endif /* JAVA_SIGNAL_H */
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