/* src/vm/jit/m68k/emit.c
- 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.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: arch.h 5330 2006-09-05 18:43:12Z edwin $
-
*/
#include <assert.h>
-#include "emit.h"
-#include "vm/jit/emit-common.h"
-#include "vm/exceptions.h"
-#include "vm/jit/asmpart.h"
+#include "vm/jit/m68k/codegen.h"
+#include "vm/jit/m68k/emit.h"
-#include "vm/builtin.h"
-#include "mm/memory.h"
+#include "mm/memory.hpp"
-#include "codegen.h"
+#include "vm/jit/builtin.hpp"
-/*
- * Loads an immededat operand into data register
- */
+#include "vm/jit/asmpart.h"
+#include "vm/jit/emit-common.hpp"
+#include "vm/jit/trace.hpp"
+#include "vm/jit/trap.hpp"
+
+
+/* emit_mov_imm_reg **************************************************************************
+ *
+ * Loads an immededat operand into an integer data register
+ *
+ ********************************************************************************************/
void emit_mov_imm_reg (codegendata *cd, s4 imm, s4 dreg)
{
- if ((imm & 0x000000FF) == imm) {
+ /* FIXME: -1 can be used as byte form 0xff, but this ifs cascade is plain wrong it seems */
+
+ if ( (imm & 0x0000007F) == imm) {
/* use byte form */
*((s2*)cd->mcodeptr) = 0x7000 | (dreg << 9) | imm; /* MOVEQ.L */
cd->mcodeptr += 2;
- } else if ((imm & 0xFFFF0000) != 0) {
+ } else if ((imm & 0x00007FFF) == imm) {
+ /* use word form */
+ OPWORD( ((7<<6) | (dreg << 3) | 5), 7, 4); /* MVS.W */
+ *((s2*)cd->mcodeptr) = (s2)imm;
+ cd->mcodeptr += 2;
+ } else {
/* use long form */
OPWORD( ((2<<6) | (dreg << 3) | 0), 7, 4);
*((s4*)cd->mcodeptr) = (s4)imm;
cd->mcodeptr += 4;
- } else {
- /* use word form */
- OPWORD( ((3<<6) | (dreg << 3) | 0), 7, 4);
- *((s2*)cd->mcodeptr) = (s2)imm;
- cd->mcodeptr += 2;
+
}
}
-
/* emit_copy *******************************************************************
Generates a register/memory to register/memory copy.
*******************************************************************************/
-inline void emit_store(jitdata *jd, instruction *iptr, varinfo *dst, s4 d)
+void emit_store(jitdata *jd, instruction *iptr, varinfo *dst, s4 d)
{
codegendata *cd;
case TYPE_DBL:
#endif
case TYPE_LNG:
- M_LST(d, REG_SP, dst->vv.regoff * 4);
+ M_LST(d, REG_SP, dst->vv.regoff);
break;
#if defined(ENABLE_SOFTFLOAT)
case TYPE_FLT:
#endif
case TYPE_INT:
- M_IST(d, REG_SP, dst->vv.regoff * 4);
+ M_IST(d, REG_SP, dst->vv.regoff);
break;
case TYPE_ADR:
- M_AST(d, REG_SP, dst->vv.regoff * 4);
+ M_AST(d, REG_SP, dst->vv.regoff);
break;
#if !defined(ENABLE_SOFTFLOAT)
case TYPE_DBL:
- M_DST(d, REG_SP, dst->vv.regoff * 4);
+ M_DST(d, REG_SP, dst->vv.regoff);
break;
case TYPE_FLT:
- M_FST(d, REG_SP, dst->vv.regoff * 4);
+ M_FST(d, REG_SP, dst->vv.regoff);
break;
#endif
default:
if (IS_INMEMORY(src->flags)) {
COUNT_SPILLS;
- disp = src->vv.regoff * 4;
+ disp = src->vv.regoff;
switch (src->type) {
#if defined(ENABLE_SOFTFLOAT)
return reg;
}
-
-/* emit_patcher_stubs **********************************************************
-
- Generates the code for the patcher stubs.
-
-*******************************************************************************/
-void emit_patcher_stubs(jitdata *jd)
-{
- codegendata *cd;
- patchref *pref;
- u8 mcode;
- u1 *savedmcodeptr;
- u1 *tmpmcodeptr;
- s4 targetdisp;
- s4 disp;
-
- /* get required compiler data */
-
- cd = jd->cd;
-
- /* generate code patching stub call code */
-
- targetdisp = 0;
-
- for (pref = cd->patchrefs; pref != NULL; pref = pref->next) {
- /* check code segment size */
-
- MCODECHECK(512);
-
- /* Get machine code which is patched back in later. A
- `bsr.l' is 6 bytes long. */
-
- savedmcodeptr = cd->mcodebase + pref->branchpos;
- mcode = *((u8 *) savedmcodeptr);
-
- /* patch in `bsr.l' to call the following code */
-
- tmpmcodeptr = cd->mcodeptr; /* save current mcodeptr */
- cd->mcodeptr = savedmcodeptr; /* set mcodeptr to patch position */
-
- M_BSR_IMM(tmpmcodeptr - (savedmcodeptr + PATCHER_CALL_SIZE) + 4);
-
- cd->mcodeptr = tmpmcodeptr; /* restore the current mcodeptr */
-
- /* save REG_ITMP3 */
- M_IPUSH(REG_ITMP3); /* FIXME why, and restore where ? */
-
- /* move pointer to java_objectheader onto stack */
-
-#if defined(ENABLE_THREADS)
- (void) dseg_add_unique_address(cd, NULL); /* flcword */
- (void) dseg_add_unique_address(cd, lock_get_initial_lock_word());
- disp = dseg_add_unique_address(cd, NULL); /* vftbl */
-
- assert(0); /* The next lines are wrong */
- M_MOV_IMM(0, REG_ITMP3);
- dseg_adddata(cd);
- M_AADD_IMM(REG_ITMP3, disp);
- M_IPUSH(REG_ITMP3);
-#else
- M_IPUSH_IMM(0);
-#endif
-
- /* push move machine code bytes and classinfo pointer */
-
- M_IPUSH_IMM(mcode >> 32);
- M_IPUSH_IMM(mcode);
- M_IPUSH_IMM(pref->ref);
- M_IPUSH_IMM(pref->patcher);
-
- M_JMP_IMM(asm_patcher_wrapper);
- }
-}
s4 emit_load_low(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
{
codegendata *cd;
s4 disp;
s4 reg;
+#if !defined(ENABLE_SOFTFLOAT)
assert(src->type == TYPE_LNG);
+#else
+ assert(src->type == TYPE_LNG || src->type == TYPE_DBL);
+#endif
/* get required compiler data */
cd = jd->cd;
if (IS_INMEMORY(src->flags)) {
COUNT_SPILLS;
- disp = src->vv.regoff * 4;
+ disp = src->vv.regoff;
M_ILD(tempreg, REG_SP, disp + 4);
reg = tempreg;
} else {
s4 disp;
s4 reg;
+#if !defined(ENABLE_SOFTFLOAT)
assert(src->type == TYPE_LNG);
-
+#else
+ assert(src->type == TYPE_LNG || src->type == TYPE_DBL);
+#endif
/* get required compiler data */
cd = jd->cd;
if (IS_INMEMORY(src->flags)) {
COUNT_SPILLS;
- disp = src->vv.regoff * 4;
+ disp = src->vv.regoff;
M_ILD(tempreg, REG_SP, disp);
reg = tempreg;
} else {
}
return reg;
}
+
+
+/**
+ * Emits code updating the condition register by comparing one integer
+ * register to an immediate integer value.
+ */
+void emit_icmp_imm(codegendata* cd, int reg, int32_t value)
+{
+ M_ICMP_IMM(value, reg);
+}
+
+
/* emit_branch *****************************************************************
Emits the code for conditional and unconditional branchs.
codegendata *cd;
registerdata *rd;
methoddesc *md;
- s4 disp,i,t;
-
if (!JITDATA_HAS_FLAG_VERBOSECALL(jd))
return;
/* mark trace code */
M_NOP;
- M_LINK(REG_FP, -16*4);
- M_PUSHALL;
+ M_IPUSH(REG_D0);
+ M_IPUSH(REG_D1);
+ M_APUSH(REG_A0);
+ M_APUSH(REG_A1);
+ M_AMOV(REG_SP, REG_A0); /* simpyfy stack offset calculation */
- /* builtin_verbosecall_enter takes all args as s8 type */
- /* TRACE_ARGS_NUM is the number of args the builtin_verbosecall_enter expects */
- M_IPUSH_IMM(m);
+#if !defined(ENABLE_SOFTFLOAT)
+ M_AADD_IMM(-8*2, REG_SP);
+ M_FSTORE(REG_F0, REG_SP, 8);
+ M_FSTORE(REG_F1, REG_SP, 0);
+#endif
+
+ M_AADD_IMM(4*4 + 4, REG_A0);
+ M_APUSH(REG_A0); /* third arg is original argument stack */
+ M_IPUSH_IMM(0); /* second arg is number of argument registers (=0) */
+ M_IPUSH_IMM(m); /* first arg is methodpointer */
- disp = 16*4 + 4 + 4; /* points to old argument stack initially */
+ M_JSR_IMM(trace_java_call_enter);
+ /* pop arguments off stack */
+ M_AADD_IMM(3*4, REG_SP);
- /* travel up stack to the first argument of the function which needs to be copied */
- for (i=0; (i < md->paramcount) && (i < TRACE_ARGS_NUM); i++) {
- disp += 4;
- if (IS_2_WORD_TYPE(md->paramtypes[i].type)) {
- disp += 4;
- }
- }
+#if !defined(ENABLE_SOFTFLOAT)
+ M_FSTORE(REG_F1, REG_SP, 0);
+ M_FSTORE(REG_F0, REG_SP, 8);
+ M_AADD_IMM(8*2, REG_SP);
+#endif
- /* disp now points to the first arg which gets copied to the trace stack, relative to REG_SP! */
- for (i=TRACE_ARGS_NUM-1; i>=0; --i) {
- if (i < md->paramcount) {
- /* traced function has such an argument */
- t = md->paramtypes[i].type;
-
- if (IS_2_WORD_TYPE(t)) {
- /* copy from original argument stack */
- M_ILD(REG_ITMP1, REG_SP, disp);
- M_IPUSH(REG_ITMP1);
- M_ILD(REG_ITMP1, REG_SP, disp);
- M_IPUSH(REG_ITMP1);
- } else {
- /* displacment is increased as 4 byte on original stack but 8 byte on trace stack */
- M_ILD(REG_ITMP1, REG_SP, disp);
- M_IPUSH(REG_ITMP1);
- M_IPUSH_IMM(0);
- disp += 4;
- }
- } else {
- /* function has no arg here, push nothing and adapt displacement */
- M_IPUSH_IMM(0);
- M_IPUSH_IMM(0);
- disp += 8;
- }
- }
- M_JSR_IMM(builtin_verbosecall_enter);
- /* pop arguments off stack */
- M_AADD_IMM(TRACE_ARGS_NUM*8+4, REG_SP);
+ M_APOP(REG_A1);
+ M_APOP(REG_A0);
+ M_IPOP(REG_D1);
+ M_IPOP(REG_D0);
- M_POPALL;
- M_UNLK(REG_FP);
M_NOP;
}
void emit_verbosecall_exit(jitdata* jd)
/* void builtin_verbosecall_exit(s8 l, double d, float f, methodinfo *m); */
+ /* void trace_java_call_exit(methodinfo *m, uint64_t *return_regs) */
/* mark trace code */
M_NOP;
- M_LINK(REG_FP, 0);
- M_IPUSH_IMM(m); /* push methodinfo */
+ /* to store result on stack */
+ M_AADD_IMM(-8, REG_SP); /* create space for array */
- M_IPUSH_IMM(0); /* TODO push float result */
+ switch (md->returntype.type) {
+ case TYPE_ADR:
+ case TYPE_INT:
+ #if defined(ENABLE_SOFTFLOAT)
+ case TYPE_FLT:
+ #endif
+ M_IST(REG_D0, REG_SP, 0);
+ break;
- M_IPUSH_IMM(0); /* TODO push double result */
- M_IPUSH_IMM(0); /* TODO push double result */
+ case TYPE_LNG:
+ #if defined(ENABLE_SOFTFLOAT)
+ case TYPE_DBL:
+ #endif
+ M_LST(REG_D1, REG_SP, 0);
+ break;
- M_IPUSH(GET_HIGH_REG(REG_RESULT_PACKED))
- M_IPUSH(GET_LOW_REG(REG_RESULT_PACKED)) /* push long result */
+ #if !defined(ENABLE_SOFTFLOAT)
+ case TYPE_FLT: /* FIXME */
+ case TYPE_DBL: /* FIXME */
+ #endif
+ case TYPE_VOID: /* nothing */
+ break;
- M_JSR_IMM(builtin_verbosecall_exit);
+ default:
+ assert(0);
+ }
+ M_APUSH(REG_SP); /* push address of array */
+ M_IPUSH_IMM(m); /* push methodinfo */
+ M_JSR_IMM(trace_java_call_exit);
+
+ M_AADD_IMM(8, REG_SP); /* remove args */
/* poping result registers from stack */
- M_IPOP(GET_LOW_REG(REG_RESULT_PACKED))
- M_IPOP(GET_HIGH_REG(REG_RESULT_PACKED))
+ switch (md->returntype.type) {
+ case TYPE_ADR:
+ case TYPE_INT:
+ #if defined(ENABLE_SOFTFLOAT)
+ case TYPE_FLT:
+ #endif
+ M_ILD(REG_D0, REG_SP, 0);
+ break;
-#if 0
- /* that is wrong of course, overwrites registers and stuff */
- M_IPOP(0); /* TODO: pop double result */
- M_IPOP(0); /* TODO: pop double result */
+ case TYPE_LNG:
+ #if defined(ENABLE_SOFTFLOAT)
+ case TYPE_DBL:
+ #endif
+ M_LLD(REG_D1, REG_SP, 0);
+ break;
+
+ #if !defined(ENABLE_SOFTFLOAT)
+ case TYPE_FLT: /* FIXME */
+ case TYPE_DBL: /* FIXME */
+ #endif
+
+ case TYPE_VOID: /* nothing */
+ break;
+
+ default:
+ assert(0);
+ }
+
+ M_AADD_IMM(8, REG_SP); /* remove space for array */
- M_IPOP(0); /* TODO: pop float result */
-#else
- M_AADD_IMM(3*4, REG_SP);
-#endif
- M_AADD_IMM(4, REG_SP); /* remove rest of stack */
- M_UNLK(REG_FP);
M_NOP;
}
#endif
M_BLE(4);
break;
case BRANCH_UGT:
- M_BHI(4);
+ M_BLS(4);
break;
default:
vm_abort("emit_classcast_check: unknown condition %d", condition);
}
M_TRAP_SETREGISTER(s1);
- M_TRAP(EXCEPTION_HARDWARE_CLASSCAST);
+ M_TRAP(TRAP_ClassCastException);
}
}
void emit_arrayindexoutofbounds_check(codegendata *cd, instruction *iptr, s4 s1, s4 s2)
{
if (INSTRUCTION_MUST_CHECK(iptr)) {
- M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));
- M_ICMP(REG_ITMP3, s2);
- M_BLT(2);
- /*M_ALD_INTERN(s2, REG_ZERO, EXCEPTION_LOAD_DISP_ARRAYINDEXOUTOFBOUNDS);*/
- M_ILLEGAL; /*FIXME */
+ M_ILD(REG_ITMP3, s1, OFFSET(java_array_t, size));
+ M_ICMP(s2, REG_ITMP3);
+ M_BHI(4);
+ M_TRAP_SETREGISTER(s2);
+ M_TRAP(TRAP_ArrayIndexOutOfBoundsException);
+ }
+}
+
+
+/* emit_arraystore_check *******************************************************
+
+ Emit an ArrayStoreException check.
+
+*******************************************************************************/
+
+void emit_arraystore_check(codegendata *cd, instruction *iptr)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_ITST(REG_RESULT);
+ M_BNE(2);
+ M_TRAP(TRAP_ArrayStoreException);
}
}
+
/* emit_nullpointer_check ******************************************************
Emit a NullPointerException check.
*******************************************************************************/
+
void emit_nullpointer_check(codegendata *cd, instruction *iptr, s4 reg)
{
if (INSTRUCTION_MUST_CHECK(iptr)) {
- /* did like to assert on TYPE_ADR, but not possible in here */
- /* so assert before each emit_nullpointer_check */
+ /* XXX: this check is copied to call monitor_enter
+ * invocation at the beginning of codegen.c */
M_ATST(reg);
M_BNE(2);
- /*M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_LOAD_DISP_NULLPOINTER);*/
- M_ILLEGAL;
+ M_TRAP(TRAP_NullPointerException);
}
}
if (INSTRUCTION_MUST_CHECK(iptr)) {
M_ITST(reg);
M_BNE(2);
- /*M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_ARITHMETIC);*/
- M_ILLEGAL; /* FIXME */
+ M_TRAP(TRAP_ArithmeticException);
}
}
-/* emit_exception_check_areg **************************************************
- *
- Emit an Exception check, tested register is address REG_RESULT
+/* emit_exception_check_ireg **************************************************
+
+ Emit an Exception check. Teste register is integer REG_RESULT
*******************************************************************************/
-void emit_exception_check_areg(codegendata *cd, instruction *iptr)
+void emit_exception_check(codegendata *cd, instruction *iptr)
{
if (INSTRUCTION_MUST_CHECK(iptr)) {
- M_ATST(REG_RESULT);
+ M_ITST(REG_RESULT);
M_BNE(2);
- /*M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_EXCEPTION);*/
- M_ILLEGAL; /*FIXME*/
+ M_TRAP(TRAP_CHECK_EXCEPTION);
}
}
-/* emit_exception_check_ireg **************************************************
- Emit an Exception check. Teste register is integer REG_RESULT
+/* emit_trap_compiler **********************************************************
+
+ Emit a trap instruction which calls the JIT compiler.
+
+*******************************************************************************/
+
+void emit_trap_compiler(codegendata *cd)
+{
+ M_TRAP_SETREGISTER(REG_METHODPTR);
+ M_TRAP(TRAP_COMPILER);
+}
+
+
+/* emit_trap *******************************************************************
+
+ Emit a trap instruction and return the original machine code.
*******************************************************************************/
-void emit_exception_check_ireg(codegendata *cd, instruction *iptr)
+
+uint32_t emit_trap(codegendata *cd)
{
- if (INSTRUCTION_MUST_CHECK(iptr)) {
- M_ITST(REG_RESULT);
+ uint32_t mcode;
+
+ /* Get machine code which is patched back in later. The
+ trap is 2 bytes long. */
+
+ mcode = *((uint32_t *) cd->mcodeptr);
+
+ M_TRAP(TRAP_PATCHER);
+
+ return mcode;
+}
+
+
+/**
+ * Emit code to recompute the procedure vector.
+ */
+void emit_recompute_pv(codegendata *cd)
+{
+ // This is a nop, because we do not use a procedure vector.
+}
+
+
+/**
+ * Generates synchronization code to enter a monitor.
+ */
+#if defined(ENABLE_THREADS)
+void emit_monitor_enter(jitdata* jd, int32_t syncslot_offset)
+{
+ // Get required compiler data.
+ methodinfo* m = jd->m;
+ codegendata* cd = jd->cd;
+
+ if (m->flags & ACC_STATIC) {
+ M_AMOV_IMM((&m->clazz->object.header), REG_ATMP1);
+ } else {
+ /* for non-static case the first arg is the object */
+ M_ALD(REG_ATMP1, REG_SP, cd->stackframesize + 4);
+ M_ATST(REG_ATMP1);
M_BNE(2);
- /*M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_EXCEPTION);*/
- M_ILLEGAL; /*FIXME*/
+ M_TRAP(TRAP_NullPointerException);
}
+
+ M_AST(REG_ATMP1, REG_SP, syncslot_offset);
+ M_AST(REG_ATMP1, REG_SP, 0 * 4);
+ M_JSR_IMM(LOCK_monitor_enter);
}
+#endif
+
+
+/**
+ * Generates synchronization code to leave a monitor.
+ */
+#if defined(ENABLE_THREADS)
+void emit_monitor_exit(jitdata* jd, int32_t syncslot_offset)
+{
+ // Get required compiler data.
+ methodinfo* m = jd->m;
+ codegendata* cd = jd->cd;
+
+ M_ILD(REG_ITMP3, REG_SP, syncslot_offset);
+
+ /* we need to save the proper return value */
+ /* we do not care for the long -> doubel convert space here */
+
+ methoddesc* md = m->parseddesc;
+
+ switch (md->returntype.type) {
+#if defined(ENABLE_SOFTFLOAT)
+ case TYPE_DBL:
+#endif
+ case TYPE_LNG:
+ M_LST(REG_RESULT_PACKED, REG_SP, syncslot_offset + 8);
+ break;
+#if defined(ENABLE_SOFTFLOAT)
+ case TYPE_FLT:
+#endif
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_IST(REG_RESULT , REG_SP, syncslot_offset + 8);
+ break;
+#if !defined(ENABLE_SOFTFLOAT)
+ case TYPE_FLT:
+ M_FST(REG_FRESULT, REG_SP, syncslot_offset + 8);
+ break;
+ case TYPE_DBL:
+ M_DST(REG_FRESULT, REG_SP, syncslot_offset + 8);
+ break;
+#endif
+ }
+
+ M_IST(REG_ITMP3, REG_SP, 0 * 4);
+ M_JSR_IMM(LOCK_monitor_exit);
+
+ /* and now restore the proper return value */
+
+ switch (md->returntype.type) {
+
+#if defined(ENABLE_SOFTFLOAT)
+ case TYPE_DBL:
+#endif
+ case TYPE_LNG:
+ M_LLD(REG_RESULT_PACKED, REG_SP, syncslot_offset + 8);
+ break;
+#if defined(ENABLE_SOFTFLOAT)
+ case TYPE_FLT:
+#endif
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_ILD(REG_RESULT , REG_SP, syncslot_offset + 8);
+ break;
+#if !defined(ENABLE_SOFTFLOAT)
+ case TYPE_FLT:
+ M_FLD(REG_FRESULT, REG_SP, syncslot_offset + 8);
+ break;
+ case TYPE_DBL:
+ M_DLD(REG_FRESULT, REG_SP, syncslot_offset + 8);
+ break;
+#endif
+ }
+}
+#endif
/*
projects / cacao.git / blobdiff