From 3951562dfa6d98037c4f78416f3c79d7fcf2ac5a Mon Sep 17 00:00:00 2001 From: Andrew Haley Date: Tue, 16 May 2000 14:38:21 +0000 Subject: ppc-signal.h: New file. 2000-05-15 Andrew Haley * include/ppc-signal.h: New file. From-SVN: r33932 --- libjava/include/ppc-signal.h | 115 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) create mode 100644 libjava/include/ppc-signal.h (limited to 'libjava/include') diff --git a/libjava/include/ppc-signal.h b/libjava/include/ppc-signal.h new file mode 100644 index 0000000..003a760 --- /dev/null +++ b/libjava/include/ppc-signal.h @@ -0,0 +1,115 @@ +// ppc-signal.h - Catch runtime signals and turn them into exceptions. + +/* Copyright (C) 2000 Free Software Foundation + + This file is part of libgcj. + +This software is copyrighted work licensed under the terms of the +Libgcj License. Please consult the file "LIBGCJ_LICENSE" for +details. */ + +#ifndef JAVA_SIGNAL_H +#define JAVA_SIGNAL_H 1 + +#include +#include + +#define HANDLE_SEGV 1 +#undef HANDLE_FPE + +#define SIGNAL_HANDLER(_name) \ +__asm ("\t.section\t\".text\"\n" \ + "\t.align 2\n" \ + "_Jv_" #_name ":\n" \ + "\tmr 3, 1\n" \ + "\tb _Jv_stub_" #_name "\n"); \ +extern "C" void _Jv_##_name (int _dummy); \ +extern "C" void _Jv_stub_##_name (char *_sp) \ + +class java::lang::Throwable; + +// Unwind the stack to the point at which the signal was generated and +// then throw an exception. + +#define MAKE_THROW_FRAME(_exception) \ +do \ +{ \ + struct sigcontext_struct *_context \ + = (struct sigcontext_struct *)(_sp + __SIGNAL_FRAMESIZE); \ + long int regs [34]; \ + memcpy (regs, &_context->regs->gpr[0], 32 * sizeof (long int)); \ + regs[32] = _context->regs->nip + sizeof (long int); \ + regs[33] = _context->regs->link; \ + \ + __asm volatile ( \ + "\tmr 31,%0\n" \ + "\tmr 3,%1 # exception to throw\n" \ + "\tlwz 0,128(31) # ip\n" \ + "\tmtlr 0\n" \ + "\tlwz 1,4(31) # previous r1\n" \ + "\tlwz 0,132(31) # previous lr\n" \ + "\tlwz 2,0(1) # previous previous r1\n" \ + "\tstw 0,4(2) # save previous lr\n" \ + "\tlwz 0,0(31)\n" \ + "\tlwz 2,8(31)\n" \ + "\tlwz 4,16(31)\n" \ + "\tlwz 5,20(31)\n" \ + "\tlwz 6,24(31)\n" \ + "\tlwz 7,28(31)\n" \ + "\tlwz 8,32(31)\n" \ + "\tlwz 9,36(31)\n" \ + "\tlwz 10,40(31)\n" \ + "\tlwz 11,44(31)\n" \ + "\tlwz 12,48(31)\n" \ + "\tlwz 13,52(31)\n" \ + "\tlwz 14,56(31)\n" \ + "\tlwz 15,60(31)\n" \ + "\tlwz 16,64(31)\n" \ + "\tlwz 17,68(31)\n" \ + "\tlwz 18,72(31)\n" \ + "\tlwz 19,76(31)\n" \ + "\tlwz 20,80(31)\n" \ + "\tlwz 21,84(31)\n" \ + "\tlwz 22,88(31)\n" \ + "\tlwz 23,92(31)\n" \ + "\tlwz 24,96(31)\n" \ + "\tlwz 25,100(31)\n" \ + "\tlwz 26,104(31)\n" \ + "\tlwz 27,108(31)\n" \ + "\tlwz 28,112(31)\n" \ + "\tlwz 29,116(31)\n" \ + "\tlwz 30,120(31)\n" \ + "\tlwz 31,124(31)\n" \ + "\tb _Jv_ThrowSignal\n" \ + : : "r"(regs), "r"(_exception) \ + : "r31", "r3"); \ +} \ +while (0) + + +#define INIT_SEGV \ +do \ + { \ + nullp = new java::lang::NullPointerException (); \ + struct sigaction act; \ + act.sa_handler = _Jv_catch_segv; \ + sigemptyset (&act.sa_mask); \ + act.sa_flags = 0; \ + __sigaction (SIGSEGV, &act, NULL); \ + } \ +while (0) + +#define INIT_FPE \ +do \ + { \ + arithexception = new java::lang::ArithmeticException \ + (JvNewStringLatin1 ("/ by zero")); \ + struct sigaction act; \ + act.sa_handler = _Jv_catch_fpe; \ + sigemptyset (&act.sa_mask); \ + act.sa_flags = 0; \ + __sigaction (SIGFPE, &act, NULL); \ + } \ +while (0) + +#endif /* JAVA_SIGNAL_H */ -- cgit v1.1