/* src/vm/jit/mips/linux/md-os.c - machine dependent MIPS Linux functions
- Copyright (C) 1996-2005, 2006, 2007, 2008
+ Copyright (C) 1996-2005, 2006, 2007, 2008, 2009
CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
#include "vm/jit/mips/md.h"
#include "vm/jit/mips/md-abi.h"
-#include "mm/gc-common.h"
-#include "mm/memory.h"
+#include "mm/gc.hpp"
+#include "mm/memory.hpp"
-#include "vm/exceptions.h"
-#include "vm/signallocal.h"
+#include "vm/signallocal.hpp"
-#include "vm/jit/asmpart.h"
#include "vm/jit/executionstate.h"
-#include "vm/jit/stacktrace.h"
-#include "vm/jit/trap.h"
+#include "vm/jit/trap.hpp"
/* md_init *********************************************************************
}
-/* md_signal_handler_sigsegv ***************************************************
-
- NullPointerException signal handler for hardware null pointer
- check.
-
-*******************************************************************************/
-
+/**
+ * NullPointerException signal handler for hardware null pointer check.
+ */
void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
{
- ucontext_t *_uc;
- mcontext_t *_mc;
- greg_t *_gregs;
- u1 *pv;
- u1 *sp;
- u1 *ra;
- u1 *xpc;
- unsigned int cause;
- u4 mcode;
- int d;
- int s1;
- int16_t disp;
- intptr_t val;
- intptr_t addr;
- int type;
- void *p;
-
- _uc = (struct ucontext *) _p;
- _mc = &_uc->uc_mcontext;
-
-#if defined(__UCLIBC__)
- _gregs = _mc->gpregs;
-#else
- _gregs = _mc->gregs;
-#endif
-
- /* In glibc's ucontext.h the registers are defined as long long,
- even for MIPS32, so we cast them. This is not the case for
- uClibc. */
-
- pv = (u1 *) (ptrint) _gregs[REG_PV];
- sp = (u1 *) (ptrint) _gregs[REG_SP];
- ra = (u1 *) (ptrint) _gregs[REG_RA]; /* this is correct for leafs */
+ int disp = 0;
+ int cause;
+ ucontext_t* _uc = (struct ucontext *) _p;
+ mcontext_t* _mc = &_uc->uc_mcontext;
+ void *xpc;
#if !defined(__UCLIBC__)
# if ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 5))
/* NOTE: We only need this for pre glibc-2.5. */
- xpc = (u1 *) (ptrint) _mc->pc;
-
/* get the cause of this exception */
cause = _mc->cause;
case 0x00000010:
/* AdEL: XPC is of the following instruction */
- xpc = xpc - 4;
+ disp -= 4;
break;
}
+ xpc = (void*) (_mc->pc + disp);
# else
- xpc = (u1 *) (ptrint) _mc->pc;
+ xpc = (void*) _mc->pc;
# endif
#else
- xpc = (u1 *) (ptrint) _gregs[CTX_EPC];
+ xpc = (void*) _gregs[CTX_EPC];
#endif
- /* get exception-throwing instruction */
-
- mcode = *((u4 *) xpc);
-
- d = M_ITYPE_GET_RT(mcode);
- s1 = M_ITYPE_GET_RS(mcode);
- disp = M_ITYPE_GET_IMM(mcode);
-
- /* check for special-load */
-
- if (s1 == REG_ZERO) {
- /* we use the exception type as load displacement */
-
- type = disp;
- val = _gregs[d];
-
- if (type == TRAP_COMPILER) {
- /* The XPC is the RA minus 4, because the RA points to the
- instruction after the call. */
-
- xpc = ra - 4;
- }
- }
- else {
- /* This is a normal NPE: addr must be NULL and the NPE-type
- define is 0. */
-
- addr = _gregs[s1];
- type = (int) addr;
- val = 0;
- }
-
- /* Handle the trap. */
+ // Handle the trap.
+ trap_handle(TRAP_SIGSEGV, xpc, _p);
+}
- p = trap_handle(type, val, pv, sp, ra, xpc, _p);
- /* Set registers. */
+/**
+ * Illegal Instruction signal handler for hardware exception checks.
+ */
+void md_signal_handler_sigill(int sig, siginfo_t* siginfo, void* _p)
+{
+ ucontext_t* _uc = (struct ucontext *) _p;
+ mcontext_t* _mc = &_uc->uc_mcontext;
- switch (type) {
- case TRAP_COMPILER:
- if (p != NULL) {
- _gregs[REG_PV] = (uintptr_t) p;
-#if defined(__UCLIBC__)
- _gregs[CTX_EPC] = (uintptr_t) p;
+#if !defined(__UCLIBC__)
+ void* xpc = (void*) _mc->pc;
#else
- _mc->pc = (uintptr_t) p;
+ void* xpc = (void*) _gregs[CTX_EPC];
#endif
- break;
- }
-
- /* Get and set the PV from the parent Java method. */
-
- pv = md_codegen_get_pv_from_pc(ra);
- _gregs[REG_PV] = (uintptr_t) pv;
-
- /* Get the exception object. */
-
- p = builtin_retrieve_exception();
-
- assert(p != NULL);
-
- /* fall-through */
-
- case TRAP_PATCHER:
- if (p == NULL) {
- /* We set the PC again because the cause may have changed
- the XPC. */
-
-#if defined(__UCLIBC__)
- _gregs[CTX_EPC] = (uintptr_t) xpc;
-#else
- _mc->pc = (uintptr_t) xpc;
-#endif
- break;
- }
-
- /* fall-through */
-
- default:
- _gregs[REG_ITMP1_XPTR] = (uintptr_t) p;
- _gregs[REG_ITMP2_XPC] = (uintptr_t) xpc;
-#if defined(__UCLIBC__)
- _gregs[CTX_EPC] = (uintptr_t) asm_handle_exception;
-#else
- _mc->pc = (uintptr_t) asm_handle_exception;
-#endif
- }
+ // Handle the trap.
+ trap_handle(TRAP_SIGILL, xpc, _p);
}
greg_t* _gregs;
int i;
- vm_abort("md_executionstate_read: PLEASE REVISE ME!");
-
_uc = (ucontext_t*) context;
_mc = &_uc->uc_mcontext;
_mc->fpregs[i] can cause invalid conversions. */
assert(sizeof(_mc->fpregs.fp_r) == sizeof(es->fltregs));
- system_memcpy(&es->fltregs, &_mc->fpregs.fp_r, sizeof(_mc->fpregs.fp_r));
+ os_memcpy(&es->fltregs, &_mc->fpregs.fp_r, sizeof(_mc->fpregs.fp_r));
}
greg_t* _gregs;
int i;
- vm_abort("md_executionstate_write: PLEASE REVISE ME!");
-
_uc = (ucontext_t *) context;
_mc = &_uc->uc_mcontext;
+#if defined(__UCLIBC__)
+ _gregs = _mc->gpregs;
+#else
+ _gregs = _mc->gregs;
+#endif
+
/* Write integer registers. */
for (i = 0; i < INT_REG_CNT; i++)
_mc->fpregs[i] can cause invalid conversions. */
assert(sizeof(_mc->fpregs.fp_r) == sizeof(es->fltregs));
- system_memcpy(&_mc->fpregs.fp_r, &es->fltregs, sizeof(_mc->fpregs.fp_r));
+ os_memcpy(&_mc->fpregs.fp_r, &es->fltregs, sizeof(_mc->fpregs.fp_r));
/* Write special registers. */
projects / cacao.git / blobdiff