/* src/vm/jit/i386/solaris/md-os.c - machine dependent i386 Solaris functions
- Copyright (C) 2008
+ Copyright (C) 2008, 2009
CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
#include <ucontext.h>
#include "vm/types.h"
+#include "vm/os.hpp"
+
+#define SKIP_REG_DEFS 1
#include "vm/jit/i386/codegen.h"
#include "vm/jit/i386/md.h"
#include "threads/thread.hpp"
-#include "vm/jit/builtin.hpp"
#include "vm/signallocal.hpp"
-#include "vm/jit/asmpart.h"
#include "vm/jit/executionstate.h"
-#include "vm/jit/stacktrace.hpp"
#include "vm/jit/trap.hpp"
-/* md_signal_handler_sigsegv ***************************************************
-
- Signal handler for hardware exceptions.
-
-*******************************************************************************/
-
+/**
+ * Signal handler for hardware exceptions.
+ */
void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
{
- ucontext_t *_uc;
- mcontext_t *_mc;
- u1 *pv;
- u1 *sp;
- u1 *ra;
- u1 *xpc;
- u1 opc;
- u1 mod;
- u1 rm;
- s4 d;
- s4 disp;
- ptrint val;
- s4 type;
- void *p;
-
- _uc = (ucontext_t *) _p;
- _mc = &_uc->uc_mcontext;
-
- pv = NULL; /* is resolved during stackframeinfo creation */
- sp = (u1 *) _mc->gregs[ESP];
- xpc = (u1 *) _mc->gregs[EIP];
- ra = xpc; /* return address is equal to XPC */
-
- /* get exception-throwing instruction */
-
- opc = M_ALD_MEM_GET_OPC(xpc);
- mod = M_ALD_MEM_GET_MOD(xpc);
- rm = M_ALD_MEM_GET_RM(xpc);
-
- /* for values see emit_mov_mem_reg and emit_mem */
-
- if ((opc == 0x8b) && (mod == 0) && (rm == 5)) {
- /* this was a hardware-exception */
-
- d = M_ALD_MEM_GET_REG(xpc);
- disp = M_ALD_MEM_GET_DISP(xpc);
-
- /* we use the exception type as load displacement */
-
- type = disp;
-
- /* ATTENTION: The _mc->gregs layout is completely crazy! The
- registers are reversed starting with number 4 for REG_EDI
- (see /usr/include/sys/ucontext.h). We have to convert that
- here. */
-
- val = _mc->gregs[EAX - d];
-
- if (type == TRAP_COMPILER) {
- /* The PV from the compiler stub is equal to the XPC. */
-
- pv = xpc;
-
- /* We use a framesize of zero here because the call pushed
- the return addres onto the stack. */
-
- ra = md_stacktrace_get_returnaddress(sp, 0);
-
- /* Skip the RA on the stack. */
-
- sp = sp + 1 * SIZEOF_VOID_P;
-
- /* The XPC is the RA minus 2, because the RA points to the
- instruction after the call. */
-
- xpc = ra - 2;
- }
- }
- else {
- /* this was a normal NPE */
+ ucontext_t *_uc = (ucontext_t *) _p;
+ mcontext_t *_mc = &_uc->uc_mcontext;
- type = TRAP_NullPointerException;
- val = 0;
- }
+ void* xpc = (void*) _mc->gregs[EIP];
- /* Handle the trap. */
-
- p = trap_handle(type, val, pv, sp, ra, xpc, _p);
-
- /* Set registers. */
-
- if (type == TRAP_COMPILER) {
- if (p == NULL) {
- _mc->gregs[ESP] = (uintptr_t) sp; /* Remove RA from stack. */
- }
- }
+ // Handle the trap.
+ trap_handle(TRAP_SIGSEGV, xpc, _p);
}
*******************************************************************************/
+/**
+ * Signal handler for hardware divide by zero (ArithmeticException)
+ * check.
+ */
void md_signal_handler_sigfpe(int sig, siginfo_t *siginfo, void *_p)
{
- ucontext_t *_uc;
- mcontext_t *_mc;
- u1 *pv;
- u1 *sp;
- u1 *ra;
- u1 *xpc;
- s4 type;
- ptrint val;
+ ucontext_t *_uc = (ucontext_t *) _p;
+ mcontext_t *_mc = &_uc->uc_mcontext;
- _uc = (ucontext_t *) _p;
- _mc = &_uc->uc_mcontext;
-
- pv = NULL; /* is resolved during stackframeinfo creation */
- sp = (u1 *) _mc->gregs[ESP];
- xpc = (u1 *) _mc->gregs[EIP];
- ra = xpc; /* return address is equal to xpc */
-
- /* This is an ArithmeticException. */
+ void* xpc = (void*) _mc->gregs[EIP];
- type = TRAP_ArithmeticException;
- val = 0;
-
- /* Handle the trap. */
-
- trap_handle(type, val, pv, sp, ra, xpc, _p);
+ // Handle the trap.
+ trap_handle(TRAP_SIGFPE, xpc, _p);
}
-/* md_signal_handler_sigill ****************************************************
-
- Signal handler for hardware patcher traps (ud2).
-
-*******************************************************************************/
-
+/**
+ * Signal handler for hardware patcher traps (ud2).
+ */
void md_signal_handler_sigill(int sig, siginfo_t *siginfo, void *_p)
{
- ucontext_t *_uc;
- mcontext_t *_mc;
- u1 *pv;
- u1 *sp;
- u1 *ra;
- u1 *xpc;
- s4 type;
- ptrint val;
-
- _uc = (ucontext_t *) _p;
- _mc = &_uc->uc_mcontext;
-
- pv = NULL; /* is resolved during stackframeinfo creation */
- sp = (u1 *) _mc->gregs[ESP];
- xpc = (u1 *) _mc->gregs[EIP];
- ra = xpc; /* return address is equal to xpc */
-
- // Check if the trap instruction is valid.
- // TODO Move this into patcher_handler.
- if (patcher_is_valid_trap_instruction_at(xpc) == false) {
- // Check if the PC has been patched during our way to this
- // signal handler (see PR85).
- if (patcher_is_patched_at(xpc) == true)
- return;
-
- // We have a problem...
- log_println("md_signal_handler_sigill: Unknown illegal instruction at 0x%lx", xpc);
-#if defined(ENABLE_DISASSEMBLER)
- (void) disassinstr(xpc);
-#endif
- vm_abort("Aborting...");
- }
-
- type = TRAP_PATCHER;
- val = 0;
+ ucontext_t *_uc = (ucontext_t *) _p;
+ mcontext_t *_mc = &_uc->uc_mcontext;
- /* Handle the trap. */
+ void* xpc = (void*) _mc->gregs[EIP];
- trap_handle(type, val, pv, sp, ra, xpc, _p);
+ // Handle the trap.
+ trap_handle(TRAP_SIGILL, xpc, _p);
}
/* get the PC and SP for this thread */
pc = (u1 *) _mc->gregs[EIP];
- sp = (u1 *) _mc->gregs[ESP];
+ sp = (u1 *) _mc->gregs[UESP];
/* now suspend the current thread */
threads_suspend_ack(pc, sp);
/* read special registers */
es->pc = (u1 *) _mc->gregs[EIP];
- es->sp = (u1 *) _mc->gregs[ESP];
+ es->sp = (u1 *) _mc->gregs[UESP];
es->pv = NULL; /* pv must be looked up via AVL tree */
/* read integer registers */
/* write special registers */
_mc->gregs[EIP] = (ptrint) es->pc;
- _mc->gregs[ESP] = (ptrint) es->sp;
+ _mc->gregs[UESP] = (ptrint) es->sp;
}
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