/* src/vm/jit/s390/md.c - machine dependent s390 Linux functions
- Copyright (C) 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) 2006, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: md.c 8299 2007-08-13 08:41:18Z michi $
-
*/
#include "vm/jit/s390/md-abi.h"
-#if defined(ENABLE_THREADS)
-# include "threads/threads-common.h"
-# include "threads/native/threads.h"
-#endif
+#include "threads/thread.h"
#include "vm/exceptions.h"
#include "vm/signallocal.h"
+
#include "vm/jit/asmpart.h"
#include "vm/jit/abi.h"
+#include "vm/jit/executionstate.h"
#include "vm/jit/methodheader.h"
+#include "vm/jit/methodtree.h"
#include "vm/jit/stacktrace.h"
+#include "vm/jit/trap.h"
#if !defined(NDEBUG) && defined(ENABLE_DISASSEMBLER)
#include "vmcore/options.h" /* XXX debug */
#include "vm/jit/codegen-common.h"
#include "vm/jit/s390/codegen.h"
+#include "vm/jit/s390/md.h"
-#include <assert.h>
-#define OOPS() assert(0);
/* prototypes *****************************************************************/
+u1 *exceptions_handle_exception(java_object_t *xptro, u1 *xpc, u1 *pv, u1 *sp);
+
void md_signal_handler_sigill(int sig, siginfo_t *siginfo, void *_p);
void md_dump_context(u1 *pc, mcontext_t *mc);
log_println("Program counter: 0x%08X", pc);
- pv = codegen_get_pv_from_pc_nocheck(pc);
+ pv = methodtree_find_nocheck(pc);
+
if (pv == NULL) {
log_println("No java method found at location.");
} else {
m = (*(codeinfo **)(pv + CodeinfoPointer))->m;
log_println(
"Java method: class %s, method %s, descriptor %s.",
- utf_bytes(m->class->name), utf_bytes(m->name), utf_bytes(m->descriptor)
+ m->clazz->name->text, m->name->text, m->descriptor->text
);
}
log_println("\tf%d\t0x%016llX\t(double)%e\t(float)%f", i, freg.l, freg.fr.d, freg.fr.f);
}
-#if defined(ENABLE_THREADS)
log_println("Dumping the current stacktrace:");
- threads_print_stacktrace();
-#endif
-
+ stacktrace_print_current();
}
/* md_signal_handler_sigsegv ***************************************************
void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
{
- stackframeinfo sfi;
ucontext_t *_uc;
mcontext_t *_mc;
u1 *pv;
/* Check opcodes and verify it is a null pointer exception */
- switch (xpc[0]) {
- case 0x58: /* L */
- case 0x50: /* ST */
- case 0x55: /* CL (array size check on NULL array) */
- base = (xpc[2] >> 4) & 0xF;
+ switch (N_RX_GET_OPC(xpc)) {
+ case OPC_L:
+ case OPC_ST:
+ case OPC_CL: /* array size check on NULL array */
+ base = N_RX_GET_BASE(xpc);
if (base == 0) {
is_null = 1;
} else if (_mc->gregs[base] == 0) {
is_null = 0;
}
break;
+ default:
+ is_null = 0;
+ break;
}
if (! is_null) {
pv = (u1 *)_mc->gregs[REG_PV] - N_PV_OFFSET;
sp = (u1 *)_mc->gregs[REG_SP];
ra = xpc;
- type = EXCEPTION_HARDWARE_NULLPOINTER;
+ type = TRAP_NullPointerException;
val = 0;
- /* create stackframeinfo */
-
- stacktrace_create_extern_stackframeinfo(&sfi, pv, sp, ra, xpc);
+ /* Handle the trap. */
- /* Handle the type. */
-
- p = signal_handle(xpc, type, val);
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
+ p = trap_handle(type, val, pv, sp, ra, xpc, _p);
if (p != NULL) {
- _mc->gregs[REG_ITMP1_XPTR] = (intptr_t) p;
- _mc->gregs[REG_ITMP2_XPC] = (intptr_t) xpc;
- _mc->psw.addr = (intptr_t) asm_handle_exception;
+ _mc->gregs[REG_ITMP3_XPTR] = (uintptr_t) p;
+ _mc->gregs[REG_ITMP1_XPC] = (uintptr_t) xpc;
+ _mc->psw.addr = (uintptr_t) asm_handle_exception;
}
else {
- _mc->psw.addr = (intptr_t) xpc;
+ _mc->psw.addr = (uintptr_t) xpc;
}
}
void md_signal_handler_sigill(int sig, siginfo_t *siginfo, void *_p)
{
- stackframeinfo sfi;
ucontext_t *_uc;
mcontext_t *_mc;
u1 *xpc;
/* Our trap instruction has the format: { 0x02, one_byte_of_data }. */
- if ((siginfo->si_code == ILL_ILLOPC) && (xpc[0] == 0x02)) {
+ if ((siginfo->si_code == ILL_ILLOPC) && (N_RR_GET_OPC(xpc) == OPC_ILL)) {
/* bits 7-4 contain a register holding a value */
- reg = (xpc[1] >> 4) & 0xF;
+ reg = N_ILL_GET_REG(xpc);
/* bits 3-0 designate the exception type */
- type = xpc[1] & 0xF;
+ type = N_ILL_GET_TYPE(xpc);
pv = (u1 *)_mc->gregs[REG_PV] - N_PV_OFFSET;
sp = (u1 *)_mc->gregs[REG_SP];
val = (ptrint)_mc->gregs[reg];
- /* create stackframeinfo */
+ if (TRAP_COMPILER == type) {
+ /* The PV from the compiler stub is equal to the XPC. */
- stacktrace_create_extern_stackframeinfo(&sfi, pv, sp, ra, xpc);
+ pv = xpc;
- /* Handle the type. */
+ /* The return address in is REG_RA */
- p = signal_handle(xpc, type, val);
+ ra = (u1 *)_mc->gregs[REG_RA];
- /* remove stackframeinfo */
+ xpc = ra - 2;
+ }
- stacktrace_remove_stackframeinfo(&sfi);
+ /* Handle the trap. */
- if (p != NULL) {
- _mc->gregs[REG_ITMP1_XPTR] = (intptr_t) p;
- _mc->gregs[REG_ITMP2_XPC] = (intptr_t) xpc;
- _mc->psw.addr = (intptr_t) asm_handle_exception;
- }
- else {
- _mc->psw.addr = (intptr_t) xpc;
+ p = trap_handle(type, val, pv, sp, ra, xpc, _p);
+
+ if (TRAP_COMPILER == type) {
+ if (NULL == p) {
+ _mc->gregs[REG_ITMP3_XPTR] = (uintptr_t) builtin_retrieve_exception();
+ _mc->gregs[REG_ITMP1_XPC] = (uintptr_t) ra - 2;
+ _mc->gregs[REG_PV] = (uintptr_t) md_codegen_get_pv_from_pc(ra);
+ _mc->psw.addr = (uintptr_t) asm_handle_exception;
+ } else {
+ _mc->gregs[REG_PV] = (uintptr_t) p;
+ _mc->psw.addr = (uintptr_t) p;
+ }
+ } else {
+ if (p != NULL) {
+ _mc->gregs[REG_ITMP3_XPTR] = (uintptr_t) p;
+ _mc->gregs[REG_ITMP1_XPC] = (uintptr_t) xpc;
+ _mc->psw.addr = (uintptr_t) asm_handle_exception;
+ }
+ else {
+ _mc->psw.addr = (uintptr_t) xpc;
+ }
}
} else {
#if !defined(NDEBUG)
void md_signal_handler_sigfpe(int sig, siginfo_t *siginfo, void *_p)
{
- stackframeinfo sfi;
ucontext_t *_uc;
mcontext_t *_mc;
u1 *pv;
/* Check opcodes */
- if (xpc[0] == 0x1D) { /* DR */
+ if (N_RR_GET_OPC(xpc) == OPC_DR) { /* DR */
- r1 = (xpc[1] >> 4) & 0xF;
- r2 = xpc[1] & 0xF;
+ r1 = N_RR_GET_REG1(xpc);
+ r2 = N_RR_GET_REG2(xpc);
if (
(_mc->gregs[r1] == 0xFFFFFFFF) &&
sp = (u1 *)_mc->gregs[REG_SP];
ra = xpc;
- type = EXCEPTION_HARDWARE_ARITHMETIC;
+ type = TRAP_ArithmeticException;
val = 0;
- /* create stackframeinfo */
-
- stacktrace_create_extern_stackframeinfo(&sfi, pv, sp, ra, xpc);
+ /* Handle the trap. */
- /* Handle the type. */
+ p = trap_handle(type, val, pv, sp, ra, xpc, _p);
- p = signal_handle(xpc, type, val);
-
- /* remove stackframeinfo */
-
- stacktrace_remove_stackframeinfo(&sfi);
-
- _mc->gregs[REG_ITMP1_XPTR] = (intptr_t) p;
- _mc->gregs[REG_ITMP2_XPC] = (intptr_t) xpc;
- _mc->psw.addr = (intptr_t) asm_handle_exception;
+ _mc->gregs[REG_ITMP3_XPTR] = (uintptr_t) p;
+ _mc->gregs[REG_ITMP1_XPC] = (uintptr_t) xpc;
+ _mc->psw.addr = (uintptr_t) asm_handle_exception;
return;
}
#endif
-#if defined(ENABLE_THREADS)
-void md_critical_section_restart(ucontext_t *_uc)
+/**
+ * Read the given context into an executionstate.
+ *
+ * @param es execution state
+ * @param context machine context
+ */
+void md_executionstate_read(executionstate_t* es, void* context)
{
- mcontext_t *_mc;
- u1 *pc;
- void *npc;
-
- _mc = &_uc->uc_mcontext;
-
- pc = (u1 *)_mc->psw.addr;
-
- npc = critical_find_restart_point(pc);
-
- if (npc != NULL) {
- log_println("%s: pc=%p, npc=%p", __FUNCTION__, pc, npc);
- _mc->psw.addr = (ptrint) npc;
- }
+ vm_abort("md_executionstate_read: IMPLEMENT ME!");
}
-#endif
-
-
-/* md_codegen_patch_branch *****************************************************
-
- Back-patches a branch instruction.
-
-*******************************************************************************/
-
-void md_codegen_patch_branch(codegendata *cd, s4 branchmpc, s4 targetmpc)
-{
-
- s4 *mcodeptr;
- s4 disp; /* branch displacement */
-
- /* calculate the patch position */
-
- mcodeptr = (s4 *) (cd->mcodebase + branchmpc);
-
- /* Calculate the branch displacement. */
-
- disp = targetmpc - branchmpc;
- disp += 4; /* size of branch */
- disp /= 2; /* specified in halfwords */
-
- ASSERT_VALID_BRANCH(disp);
- /* patch the branch instruction before the mcodeptr */
- mcodeptr[-1] |= (disp & 0xFFFF);
-}
-
-
-/* md_stacktrace_get_returnaddress *********************************************
-
- Returns the return address of the current stackframe, specified by
- the passed stack pointer and the stack frame size.
-
-*******************************************************************************/
-
-u1 *md_stacktrace_get_returnaddress(u1 *sp, u4 framesize)
+/**
+ * Write the given executionstate back to the context.
+ *
+ * @param es execution state
+ * @param context machine context
+ */
+void md_executionstate_write(executionstate_t* es, void* context)
{
- u1 *ra;
-
- /* on S390 the return address is located on the top of the stackframe */
-
- ra = *((u1 **) (sp + framesize - 8));
-
- return ra;
+ vm_abort("md_executionstate_write: IMPLEMENT ME!");
}
-/* md_get_method_patch_address *************************************************
+/* md_jit_method_patch_address *************************************************
Gets the patch address of the currently compiled method. The offset
is extracted from the load instruction(s) before the jump and added
*******************************************************************************/
-u1 *md_get_method_patch_address(u1 *ra, stackframeinfo *sfi, u1 *mptr)
+void *md_jit_method_patch_address(void* pv, void *ra, void *mptr)
{
- u1 base, index;
- s4 offset;
- u1 *pa; /* patch address */
+ uint8_t *pc;
+ uint8_t base, index;
+ int32_t offset;
+ void *pa; /* patch address */
/* go back to the load before the call instruction */
- ra = ra - 2 /* sizeof bcr */ - 4 /* sizeof l */;
+ pc = ((uint8_t *) ra) - SZ_BCR - SZ_L;
/* get the base register of the load */
- base = ra[2] >> 4;
- index = ra[1] & 0xF;
+ base = N_RX_GET_BASE(pc);
+ index = N_RX_GET_INDEX(pc);
/* check for the different calls */
switch (base) {
- case 0xd:
+ case REG_PV:
/* INVOKESTATIC/SPECIAL */
-
switch (index) {
- case 0x0:
+ case R0:
/* the offset is in the load instruction */
- offset = ((*(u2 *)(ra + 2)) & 0xFFF) + N_PV_OFFSET;
+ offset = N_RX_GET_DISP(pc) + N_PV_OFFSET;
break;
- case 0x1:
+ case REG_ITMP1:
/* the offset is in the immediate load before the load */
- offset = *((s2 *) (ra - 2));
+ offset = N_RI_GET_IMM(pc - SZ_L);
break;
default:
assert(0);
/* add the offset to the procedure vector */
- pa = sfi->pv + offset;
-
+ pa = ((uint8_t *) pv) + offset;
break;
- case 0xc:
+ case REG_METHODPTR:
/* mptr relative */
/* INVOKEVIRTUAL/INTERFACE */
- offset = *((u2 *)(ra + 2)) & 0xFFF;
+ offset = N_RX_GET_DISP(pc);
/* return NULL if no mptr was specified (used for replacement) */
/* add offset to method pointer */
- pa = mptr + offset;
+ pa = (uint8_t *)mptr + offset;
break;
+
default:
/* catch any problems */
- assert(0);
+ vm_abort("md_jit_method_patch_address");
break;
}
}
-/* md_codegen_get_pv_from_pc ***************************************************
-
- On this architecture just a wrapper function to
- codegen_get_pv_from_pc.
-
-*******************************************************************************/
-
-u1 *md_codegen_get_pv_from_pc(u1 *ra)
-{
- u1 *pv;
-
- /* Get the start address of the function which contains this
- address from the method table. */
-
- pv = codegen_get_pv_from_pc(ra);
-
- return pv;
-}
-
-
-/* md_cacheflush ***************************************************************
-
- Calls the system's function to flush the instruction and data
- cache.
-
-*******************************************************************************/
-
-void md_cacheflush(u1 *addr, s4 nbytes)
-{
- /* do nothing */
-}
-
-
-/* md_icacheflush **************************************************************
-
- Calls the system's function to flush the instruction cache.
-
-*******************************************************************************/
-
-void md_icacheflush(u1 *addr, s4 nbytes)
-{
- /* do nothing */
-}
-
-
-/* md_dcacheflush **************************************************************
-
- Calls the system's function to flush the data cache.
-
-*******************************************************************************/
-
-void md_dcacheflush(u1 *addr, s4 nbytes)
-{
- /* do nothing */
-}
-
-
/* md_patch_replacement_point **************************************************
Patch the given replacement point.
*******************************************************************************/
#if defined(ENABLE_REPLACEMENT)
-void md_patch_replacement_point(codeinfo *code, s4 index, rplpoint *rp, u1 *savedmcode)
+void md_patch_replacement_point(u1 *pc, u1 *savedmcode, bool revert)
{
assert(0);
}
/* get registers */
- xptr = *(uint8_t **)(regs + REG_ITMP1_XPTR);
- xpc = *(uint8_t **)(regs + REG_ITMP2_XPC);
+ xptr = *(uint8_t **)(regs + REG_ITMP3_XPTR);
+ xpc = *(uint8_t **)(regs + REG_ITMP1_XPC);
sp = *(uint8_t **)(regs + REG_SP);
++loops;
- pv = codegen_get_pv_from_pc(xpc);
+ pv = methodtree_find(xpc);
- handler = exceptions_handle_exception(xptr, xpc, pv, sp);
+ handler = exceptions_handle_exception((java_object_t *)xptr, xpc, pv, sp);
if (handler == NULL) {
/* new xpc is call before return address */
- xpc = ra;
+ xpc = ra - 2;
} else {
xpc = handler;
/* write new values for registers */
- *(uint8_t **)(regs + REG_ITMP1_XPTR) = xptr;
- *(uint8_t **)(regs + REG_ITMP2_XPC) = xpc;
+ *(uint8_t **)(regs + REG_ITMP3_XPTR) = xptr;
+ *(uint8_t **)(regs + REG_ITMP1_XPC) = xpc;
*(uint8_t **)(regs + REG_SP) = sp;
*(uint8_t **)(regs + REG_PV) = pv - 0XFFC;
projects / cacao.git / blobdiff