/* src/vm/jit/i386/darwin/md-os.c - machine dependent i386 Darwin functions
- Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
- C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
- E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
- J. Wenninger, Institut f. Computersprachen - TU Wien
+ Copyright (C) 1996-2005, 2006, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
#include "vm/types.h"
#include "vm/jit/i386/codegen.h"
+#include "vm/jit/i386/md.h"
-#include "threads/threads-common.h"
+#include "threads/thread.hpp"
-#include "vm/exceptions.h"
+#include "vm/jit/builtin.hpp"
#include "vm/global.h"
-#include "vm/signallocal.h"
-#include "vm/stringlocal.h"
+#include "vm/signallocal.hpp"
+
#include "vm/jit/asmpart.h"
-#include "vm/jit/stacktrace.h"
+#include "vm/jit/executionstate.h"
+#include "vm/jit/stacktrace.hpp"
+#include "vm/jit/trap.h"
#include "vm/jit/i386/codegen.h"
void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
{
- stackframeinfo sfi;
ucontext_t *_uc;
mcontext_t _mc;
u1 *pv;
u1 *sp;
u1 *ra;
u1 *xpc;
- u1 opc;
- u1 mod;
- u1 rm;
- int d;
- int32_t disp;
+ u1 opc;
+ u1 mod;
+ u1 rm;
+ int d;
+ int32_t disp;
intptr_t val;
- int type;
- void *p;
+ int type;
+ void *p;
_uc = (ucontext_t *) _p;
_mc = _uc->uc_mcontext;
- _ss = &_mc->ss;
+ _ss = &_mc->__ss;
+
+ pv = NULL; /* is resolved during stackframeinfo creation */
+ sp = (u1 *) _ss->__esp;
+ xpc = (u1 *) _ss->__eip;
+ ra = xpc; /* return address is equal to XPC */
+
+ /* get exception-throwing instruction */
- pv = NULL; /* is resolved during stackframeinfo creation */
- sp = (u1 *) _ss->esp;
- xpc = (u1 *) _ss->eip;
- ra = xpc; /* return address is equal to XPC */
+ opc = M_ALD_MEM_GET_OPC(xpc);
+ mod = M_ALD_MEM_GET_MOD(xpc);
+ rm = M_ALD_MEM_GET_RM(xpc);
- /* get exception-throwing instruction */
+ /* for values see emit_mov_mem_reg and emit_mem */
- opc = M_ALD_MEM_GET_OPC(xpc);
- mod = M_ALD_MEM_GET_MOD(xpc);
- rm = M_ALD_MEM_GET_RM(xpc);
+ if ((opc == 0x8b) && (mod == 0) && (rm == 5)) {
+ /* this was a hardware-exception */
- /* for values see emit_mov_mem_reg and emit_mem */
+ d = M_ALD_MEM_GET_REG(xpc);
+ disp = M_ALD_MEM_GET_DISP(xpc);
- if ((opc == 0x8b) && (mod == 0) && (rm == 5)) {
- /* this was a hardware-exception */
+ /* we use the exception type as load displacement */
- d = M_ALD_MEM_GET_REG(xpc);
- disp = M_ALD_MEM_GET_DISP(xpc);
+ type = disp;
- /* we use the exception type as load displacement */
+ val = (d == 0) ? _ss->__eax :
+ ((d == 1) ? _ss->__ecx :
+ ((d == 2) ? _ss->__edx :
+ ((d == 3) ? _ss->__ebx :
+ ((d == 4) ? _ss->__esp :
+ ((d == 5) ? _ss->__ebp :
+ ((d == 6) ? _ss->__esi : _ss->__edi))))));
- type = disp;
+ if (type == TRAP_COMPILER) {
+ /* The PV from the compiler stub is equal to the XPC. */
- val = (d == 0) ? _ss->eax :
- ((d == 1) ? _ss->ecx :
- ((d == 2) ? _ss->edx :
- ((d == 3) ? _ss->ebx :
- ((d == 4) ? _ss->esp :
- ((d == 5) ? _ss->ebp :
- ((d == 6) ? _ss->esi : _ss->edi))))));
- }
- else {
- /* this was a normal NPE */
+ pv = xpc;
- type = EXCEPTION_HARDWARE_NULLPOINTER;
- }
+ /* We use a framesize of zero here because the call pushed
+ the return addres onto the stack. */
- /* create stackframeinfo */
+ ra = md_stacktrace_get_returnaddress(sp, 0);
- stacktrace_create_extern_stackframeinfo(&sfi, pv, sp, ra, xpc);
+ /* Skip the RA on the stack. */
- /* Handle the type. */
+ sp = sp + 1 * SIZEOF_VOID_P;
- p = signal_handle(xpc, type, val);
+ /* The XPC is the RA minus 2, because the RA points to the
+ instruction after the call. */
- /* remove stackframeinfo */
+ xpc = ra - 2;
+ }
+ }
+ else {
+ /* this was a normal NPE */
- stacktrace_remove_stackframeinfo(&sfi);
+ type = TRAP_NullPointerException;
+ }
- /* set registers */
+ /* Handle the trap. */
- _ss->eax = (intptr_t) p;
- _ss->ecx = (intptr_t) xpc;
- _ss->eip = (intptr_t) asm_handle_exception;
+ p = trap_handle(type, val, pv, sp, ra, xpc, _p);
+
+ /* Set registers. */
+
+ if (type == TRAP_COMPILER) {
+ if (p == NULL) {
+ _ss->__esp = (uintptr_t) sp; /* Remove RA from stack. */
+ }
+ }
}
void md_signal_handler_sigfpe(int sig, siginfo_t *siginfo, void *_p)
{
- stackframeinfo sfi;
ucontext_t *_uc;
mcontext_t _mc;
- u1 *pv;
+ u1 *pv;
i386_thread_state_t *_ss;
u1 *sp;
u1 *ra;
u1 *xpc;
- int type;
- intptr_t val;
- void *p;
+ int type;
+ intptr_t val;
_uc = (ucontext_t *) _p;
_mc = _uc->uc_mcontext;
- _ss = &_mc->ss;
+ _ss = &_mc->__ss;
- pv = NULL; /* is resolved during stackframeinfo creation */
- sp = (u1 *) _ss->esp;
- xpc = (u1 *) _ss->eip;
+ pv = NULL; /* is resolved during stackframeinfo creation */
+ sp = (u1 *) _ss->__esp;
+ xpc = (u1 *) _ss->__eip;
ra = xpc; /* return address is equal to xpc */
- /* this is an ArithmeticException */
-
- type = EXCEPTION_HARDWARE_ARITHMETIC;
- val = 0;
-
- /* create stackframeinfo */
-
- stacktrace_create_extern_stackframeinfo(&sfi, pv, sp, ra, xpc);
-
- /* Handle the type. */
-
- p = signal_handle(xpc, type, val);
+ /* This is an ArithmeticException */
- /* remove stackframeinfo */
+ type = TRAP_ArithmeticException;
+ val = 0;
- stacktrace_remove_stackframeinfo(&sfi);
+ /* Handle the trap. */
- _ss->eax = (intptr_t) p;
- _ss->ecx = (intptr_t) xpc;
- _ss->eip = (intptr_t) asm_handle_exception;
+ trap_handle(type, val, pv, sp, ra, xpc, _p);
}
_uc = (ucontext_t *) _p;
_mc = _uc->uc_mcontext;
- _ss = &_mc->ss;
+ _ss = &_mc->__ss;
- pc = (u1 *) _ss->eip;
+ pc = (u1 *) _ss->__eip;
t->pc = pc;
}
-/* md_critical_section_restart *************************************************
+/* md_signal_handler_sigill ****************************************************
- Search the critical sections tree for a matching section and set
- the PC to the restart point, if necessary.
+ Signal handler for hardware patcher traps (ud2).
*******************************************************************************/
-#if defined(ENABLE_THREADS)
-void thread_restartcriticalsection(ucontext_t *_uc)
+void md_signal_handler_sigill(int sig, siginfo_t *siginfo, void *_p)
{
+ ucontext_t *_uc;
mcontext_t _mc;
+ u1 *pv;
i386_thread_state_t *_ss;
- u1 *pc;
- void *rpc;
+ u1 *sp;
+ u1 *ra;
+ u1 *xpc;
+ int type;
+ intptr_t val;
+
+ _uc = (ucontext_t *) _p;
_mc = _uc->uc_mcontext;
- _ss = &_mc->ss;
+ _ss = &_mc->__ss;
+
+ pv = NULL; /* is resolved during stackframeinfo creation */
+ sp = (u1 *) _ss->__esp;
+ xpc = (u1 *) _ss->__eip;
+ ra = xpc; /* return address is equal to xpc */
- pc = (u1 *) _ss->eip;
+ type = TRAP_PATCHER;
+ val = 0;
- rpc = critical_find_restart_point(pc);
+ /* Handle the trap. */
- if (rpc != NULL)
- _ss->eip = (ptrint) rpc;
+ trap_handle(type, val, pv, sp, ra, xpc, _p);
+}
+
+/* md_executionstate_read ******************************************************
+
+ Read the given context into an executionstate.
+
+*******************************************************************************/
+
+void md_executionstate_read(executionstate_t *es, void *context)
+{
+ ucontext_t *_uc;
+ mcontext_t _mc;
+ i386_thread_state_t *_ss;
+ int i;
+
+ _uc = (ucontext_t *) context;
+ _mc = _uc->uc_mcontext;
+ _ss = &_mc->__ss;
+
+ /* read special registers */
+ es->pc = (u1 *) _ss->__eip;
+ es->sp = (u1 *) _ss->__esp;
+ es->pv = NULL; /* pv must be looked up via AVL tree */
+
+ /* read integer registers */
+ for (i = 0; i < INT_REG_CNT; i++)
+ es->intregs[i] = (i == 0) ? _ss->__eax :
+ ((i == 1) ? _ss->__ecx :
+ ((i == 2) ? _ss->__edx :
+ ((i == 3) ? _ss->__ebx :
+ ((i == 4) ? _ss->__esp :
+ ((i == 5) ? _ss->__ebp :
+ ((i == 6) ? _ss->__esi : _ss->__edi))))));
+
+ /* read float registers */
+ for (i = 0; i < FLT_REG_CNT; i++)
+ es->fltregs[i] = 0xdeadbeefdeadbeefULL;
+}
+
+
+/* md_executionstate_write *****************************************************
+
+ Write the given executionstate back to the context.
+
+*******************************************************************************/
+
+void md_executionstate_write(executionstate_t *es, void *context)
+{
+ ucontext_t* _uc;
+ mcontext_t _mc;
+ i386_thread_state_t* _ss;
+ int i;
+
+ _uc = (ucontext_t *) context;
+ _mc = _uc->uc_mcontext;
+ _ss = &_mc->__ss;
+
+ /* write integer registers */
+ for (i = 0; i < INT_REG_CNT; i++)
+ *((i == 0) ? &_ss->__eax :
+ ((i == 1) ? &_ss->__ecx :
+ ((i == 2) ? &_ss->__edx :
+ ((i == 3) ? &_ss->__ebx :
+ ((i == 4) ? &_ss->__esp :
+ ((i == 5) ? &_ss->__ebp :
+ ((i == 6) ? &_ss->__esi : &_ss->__edi))))))) = es->intregs[i];
+
+ /* write special registers */
+ _ss->__eip = (ptrint) es->pc;
+ _ss->__esp = (ptrint) es->sp;
}
-#endif
/*
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