/* src/vm/jit/powerpc/emit.c - PowerPC code emitter functions
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
+ 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
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Christian Thalinger
-
- Changes:
-
- $Id: emitfuncs.c 4398 2006-01-31 23:43:08Z twisti $
+ $Id: emit.c 4398 2006-01-31 23:43:08Z twisti $
*/
#include "vm/jit/powerpc/codegen.h"
+#include "mm/memory.h"
+
+#if defined(ENABLE_THREADS)
+# include "threads/native/lock.h"
+#endif
+
#include "vm/builtin.h"
+#include "vm/exceptions.h"
+
#include "vm/jit/asmpart.h"
+#include "vm/jit/codegen-common.h"
#include "vm/jit/dseg.h"
#include "vm/jit/emit-common.h"
#include "vm/jit/jit.h"
#include "vm/jit/replace.h"
+#include "vmcore/options.h"
+
/* emit_load *******************************************************************
disp = src->vv.regoff * 4;
- if (IS_FLT_DBL_TYPE(src->type)) {
- if (IS_2_WORD_TYPE(src->type))
- M_DLD(tempreg, REG_SP, disp);
- else
- M_FLD(tempreg, REG_SP, disp);
- }
- else {
- if (IS_2_WORD_TYPE(src->type))
- M_LLD(tempreg, REG_SP, disp);
- else
- M_ILD(tempreg, REG_SP, disp);
+ switch (src->type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_ILD(tempreg, REG_SP, disp);
+ break;
+ case TYPE_LNG:
+ M_LLD(tempreg, REG_SP, disp);
+ break;
+ case TYPE_FLT:
+ M_FLD(tempreg, REG_SP, disp);
+ break;
+ case TYPE_DBL:
+ M_DLD(tempreg, REG_SP, disp);
+ break;
+ default:
+ vm_abort("emit_load: unknown type %d", src->type);
}
reg = tempreg;
/* emit_store ******************************************************************
- XXX
+ Emit a possible store for the given variable.
*******************************************************************************/
void emit_store(jitdata *jd, instruction *iptr, varinfo *dst, s4 d)
{
codegendata *cd;
+ s4 disp;
/* get required compiler data */
if (IS_INMEMORY(dst->flags)) {
COUNT_SPILLS;
- if (IS_FLT_DBL_TYPE(dst->type)) {
- if (IS_2_WORD_TYPE(dst->type))
- M_DST(d, REG_SP, dst->vv.regoff * 4);
- else
- M_FST(d, REG_SP, dst->vv.regoff * 4);
- }
- else {
- if (IS_2_WORD_TYPE(dst->type))
- M_LST(d, REG_SP, dst->vv.regoff * 4);
- else
- M_IST(d, REG_SP, dst->vv.regoff * 4);
+ disp = dst->vv.regoff * 4;
+
+ switch (dst->type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_IST(d, REG_SP, disp);
+ break;
+ case TYPE_LNG:
+ M_LST(d, REG_SP, disp);
+ break;
+ case TYPE_FLT:
+ M_FST(d, REG_SP, disp);
+ break;
+ case TYPE_DBL:
+ M_DST(d, REG_SP, disp);
+ break;
+ default:
+ vm_abort("emit_store: unknown type %d", dst->type);
}
}
}
}
if (s1 != d) {
- if (IS_FLT_DBL_TYPE(src->type))
+ switch (src->type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_MOV(s1, d);
+ break;
+ case TYPE_LNG:
+ M_MOV(GET_LOW_REG(s1), GET_LOW_REG(d));
+ M_MOV(GET_HIGH_REG(s1), GET_HIGH_REG(d));
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
M_FMOV(s1, d);
- else {
- if (IS_2_WORD_TYPE(src->type)) {
- M_MOV(GET_LOW_REG(s1), GET_LOW_REG(d));
- M_MOV(GET_HIGH_REG(s1), GET_HIGH_REG(d));
- }
- else
- M_MOV(s1, d);
+ break;
+ default:
+ vm_abort("emit_copy: unknown type %d", dst->type);
}
}
}
-/* emit_exception_stubs ********************************************************
+/* emit_branch *****************************************************************
- Generates the code for the exception stubs.
+ Emits the code for conditional and unconditional branchs.
*******************************************************************************/
-void emit_exception_stubs(jitdata *jd)
+void emit_branch(codegendata *cd, s4 disp, s4 condition, s4 reg, u4 opt)
{
- codegendata *cd;
- registerdata *rd;
- exceptionref *eref;
- s4 targetdisp;
- s4 disp;
+ s4 checkdisp;
+ s4 branchdisp;
- /* get required compiler data */
+ /* calculate the different displacements */
- cd = jd->cd;
- rd = jd->rd;
+ checkdisp = disp + 4;
+ branchdisp = (disp - 4) >> 2;
- /* generate exception stubs */
+ /* check which branch to generate */
- targetdisp = 0;
+ if (condition == BRANCH_UNCONDITIONAL) {
+ /* check displacement for overflow */
- for (eref = cd->exceptionrefs; eref != NULL; eref = eref->next) {
- gen_resolvebranch(cd->mcodebase + eref->branchpos,
- eref->branchpos, cd->mcodeptr - cd->mcodebase);
+ if ((checkdisp < (s4) 0xfe000000) || (checkdisp > (s4) 0x01fffffc)) {
+ /* if the long-branches flag isn't set yet, do it */
- MCODECHECK(100);
+ if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
+ cd->flags |= (CODEGENDATA_FLAG_ERROR |
+ CODEGENDATA_FLAG_LONGBRANCHES);
+ }
- /* Move the value register to a temporary register, if
- there is the need for it. */
+ vm_abort("emit_branch: emit unconditional long-branch code");
+ }
+ else {
+ M_BR(branchdisp);
+ }
+ }
+ else {
+ /* and displacement for overflow */
- if (eref->reg != -1)
- M_MOV(eref->reg, REG_ITMP1);
+ if ((checkdisp < (s4) 0xffff8000) || (checkdisp > (s4) 0x00007fff)) {
+ /* if the long-branches flag isn't set yet, do it */
- /* calcuate exception address */
+ if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
+ cd->flags |= (CODEGENDATA_FLAG_ERROR |
+ CODEGENDATA_FLAG_LONGBRANCHES);
+ }
- M_LDA(REG_ITMP2_XPC, REG_PV, eref->branchpos - 4);
+ switch (condition) {
+ case BRANCH_EQ:
+ M_BNE(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_NE:
+ M_BEQ(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_LT:
+ M_BGE(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_GE:
+ M_BLT(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_GT:
+ M_BLE(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_LE:
+ M_BGT(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_NAN:
+ vm_abort("emit_branch: long BRANCH_NAN");
+ break;
+ default:
+ vm_abort("emit_branch: unknown condition %d", condition);
+ }
+ }
+ else {
+ switch (condition) {
+ case BRANCH_EQ:
+ M_BEQ(branchdisp);
+ break;
+ case BRANCH_NE:
+ M_BNE(branchdisp);
+ break;
+ case BRANCH_LT:
+ M_BLT(branchdisp);
+ break;
+ case BRANCH_GE:
+ M_BGE(branchdisp);
+ break;
+ case BRANCH_GT:
+ M_BGT(branchdisp);
+ break;
+ case BRANCH_LE:
+ M_BLE(branchdisp);
+ break;
+ case BRANCH_NAN:
+ M_BNAN(branchdisp);
+ break;
+ default:
+ vm_abort("emit_branch: unknown condition %d", condition);
+ }
+ }
+ }
+}
- /* move function to call into REG_ITMP3 */
- disp = dseg_add_functionptr(cd, eref->function);
- M_ALD(REG_ITMP3, REG_PV, disp);
+/* emit_arithmetic_check *******************************************************
- if (targetdisp == 0) {
- targetdisp = ((u4 *) cd->mcodeptr) - ((u4 *) cd->mcodebase);
+ Emit an ArithmeticException check.
- if (jd->isleafmethod) {
- M_MFLR(REG_ZERO);
- M_AST(REG_ZERO, REG_SP, cd->stackframesize * 4 + LA_LR_OFFSET);
- }
+*******************************************************************************/
- M_MOV(REG_PV, rd->argintregs[0]);
- M_MOV(REG_SP, rd->argintregs[1]);
+void emit_arithmetic_check(codegendata *cd, instruction *iptr, s4 reg)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_TST(reg);
+ M_BNE(1);
+ M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_ARITHMETIC);
+ }
+}
- if (jd->isleafmethod)
- M_MOV(REG_ZERO, rd->argintregs[2]);
- else
- M_ALD(rd->argintregs[2],
- REG_SP, cd->stackframesize * 4 + LA_LR_OFFSET);
- M_MOV(REG_ITMP2_XPC, rd->argintregs[3]);
- M_MOV(REG_ITMP1, rd->argintregs[4]);
+/* emit_arrayindexoutofbounds_check ********************************************
- M_STWU(REG_SP, REG_SP, -(LA_SIZE + 6 * 4));
- M_AST(REG_ITMP2_XPC, REG_SP, LA_SIZE + 5 * 4);
+ Emit a ArrayIndexOutOfBoundsException check.
- M_MTCTR(REG_ITMP3);
- M_JSR;
- M_MOV(REG_RESULT, REG_ITMP1_XPTR);
+*******************************************************************************/
- M_ALD(REG_ITMP2_XPC, REG_SP, LA_SIZE + 5 * 4);
- M_IADD_IMM(REG_SP, LA_SIZE + 6 * 4, REG_SP);
+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_TRAPGEU(s2, REG_ITMP3);
+ }
+}
- if (jd->isleafmethod) {
- /* XXX FIXME: REG_ZERO can cause problems here! */
- assert(cd->stackframesize * 4 <= 32767);
- M_ALD(REG_ZERO, REG_SP, cd->stackframesize * 4 + LA_LR_OFFSET);
- M_MTLR(REG_ZERO);
- }
+/* emit_classcast_check ********************************************************
- disp = dseg_add_functionptr(cd, asm_handle_exception);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_MTCTR(REG_ITMP3);
- M_RTS;
- }
- else {
- disp = (((u4 *) cd->mcodebase) + targetdisp) -
- (((u4 *) cd->mcodeptr) + 1);
- M_BR(disp);
+ Emit a ClassCastException check.
+
+*******************************************************************************/
+
+void emit_classcast_check(codegendata *cd, instruction *iptr, s4 condition, s4 reg, s4 s1)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ switch (condition) {
+ case BRANCH_LE:
+ M_BGT(1);
+ break;
+ case BRANCH_EQ:
+ M_BNE(1);
+ break;
+ case BRANCH_GT:
+ M_BLE(1);
+ break;
+ default:
+ vm_abort("emit_classcast_check: unknown condition %d", condition);
}
+ M_ALD_INTERN(s1, REG_ZERO, EXCEPTION_HARDWARE_CLASSCAST);
+ }
+}
+
+
+/* emit_nullpointer_check ******************************************************
+
+ Emit a NullPointerException check.
+
+*******************************************************************************/
+
+void emit_nullpointer_check(codegendata *cd, instruction *iptr, s4 reg)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_TST(reg);
+ M_BNE(1);
+ M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_NULLPOINTER);
+ }
+}
+
+
+/* emit_exception_check ********************************************************
+
+ Emit an Exception check.
+
+*******************************************************************************/
+
+void emit_exception_check(codegendata *cd, instruction *iptr)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_TST(REG_RESULT);
+ M_BNE(1);
+ M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_EXCEPTION);
}
}
*******************************************************************************/
+#if defined(ENABLE_REPLACEMENT)
void emit_replacement_stubs(jitdata *jd)
{
codegendata *cd;
codeinfo *code;
rplpoint *rplp;
- u1 *savedmcodeptr;
s4 disp;
s4 i;
+#if !defined(NDEBUG)
+ u1 *savedmcodeptr;
+#endif
/* get required compiler data */
rplp = code->rplpoints;
- for (i = 0; i < code->rplpointcount; ++i, ++rplp) {
- /* check code segment size */
-
- MCODECHECK(100);
+ /* store beginning of replacement stubs */
- /* note start of stub code */
+ code->replacementstubs = (u1*) (cd->mcodeptr - cd->mcodebase);
- rplp->outcode = (u1 *) (cd->mcodeptr - cd->mcodebase);
+ for (i = 0; i < code->rplpointcount; ++i, ++rplp) {
+ /* do not generate stubs for non-trappable points */
- /* make machine code for patching */
+ if (rplp->flags & RPLPOINT_FLAG_NOTRAP)
+ continue;
- savedmcodeptr = cd->mcodeptr;
- cd->mcodeptr = (u1 *) &(rplp->mcode) + 1; /* big-endian */
+ /* check code segment size */
- disp = (ptrint) ((s4 *) rplp->outcode - (s4 *) rplp->pc) - 1;
- M_BR(disp);
+ MCODECHECK(100);
- cd->mcodeptr = savedmcodeptr;
+#if !defined(NDEBUG)
+ savedmcodeptr = cd->mcodeptr;
+#endif
/* create stack frame - keep 16-byte aligned */
M_ALD(REG_ITMP3, REG_PV, disp);
M_MTCTR(REG_ITMP3);
M_RTS;
+
+ assert((cd->mcodeptr - savedmcodeptr) == 4*REPLACEMENT_STUB_SIZE);
}
}
+#endif /* defined(ENABLE_REPLACEMENT) */
/* emit_verbosecall_enter ******************************************************
*******************************************************************************/
-#if !defined(NDEBUG)
void emit_verbosecall_enter(jitdata *jd)
{
+#if !defined(NDEBUG)
methodinfo *m;
codegendata *cd;
registerdata *rd;
int stack_size;
methoddesc *md;
+ if (!JITDATA_HAS_FLAG_VERBOSECALL(jd))
+ return;
+
/* get required compiler data */
m = jd->m;
#else
M_AST(REG_ITMP1, REG_SP, LA_SIZE + 4 * 8);
#endif
- p = dseg_add_functionptr(cd, builtin_trace_args);
+ p = dseg_add_functionptr(cd, builtin_verbosecall_enter);
M_ALD(REG_ITMP2, REG_PV, p);
M_MTCTR(REG_ITMP2);
M_JSR;
/* mark trace code */
M_NOP;
-}
#endif /* !defined(NDEBUG) */
+}
/* emit_verbosecall_exit *******************************************************
Generates the code for the call trace.
+ void builtin_verbosecall_exit(s8 l, double d, float f, methodinfo *m);
+
*******************************************************************************/
-#if !defined(NDEBUG)
void emit_verbosecall_exit(jitdata *jd)
{
+#if !defined(NDEBUG)
methodinfo *m;
codegendata *cd;
registerdata *rd;
methoddesc *md;
s4 disp;
+ if (!JITDATA_HAS_FLAG_VERBOSECALL(jd))
+ return;
+
/* get required compiler data */
m = jd->m;
switch (md->returntype.type) {
case TYPE_INT:
case TYPE_ADR:
-#if defined(__DARWIN__)
- M_MOV(REG_RESULT, rd->argintregs[2]);
- M_CLR(rd->argintregs[1]);
-#else
- M_MOV(REG_RESULT, rd->argintregs[3]);
- M_CLR(rd->argintregs[2]);
-#endif
+ M_INTMOVE(REG_RESULT, REG_A1);
+ M_CLR(REG_A0);
break;
case TYPE_LNG:
-#if defined(__DARWIN__)
- M_MOV(REG_RESULT2, rd->argintregs[2]);
- M_MOV(REG_RESULT, rd->argintregs[1]);
-#else
- M_MOV(REG_RESULT2, rd->argintregs[3]);
- M_MOV(REG_RESULT, rd->argintregs[2]);
-#endif
+ M_LNGMOVE(REG_RESULT_PACKED, REG_A0_A1_PACKED);
break;
}
- M_FLTMOVE(REG_FRESULT, rd->argfltregs[0]);
- M_FLTMOVE(REG_FRESULT, rd->argfltregs[1]);
+ M_FLTMOVE(REG_FRESULT, REG_FA0);
+ M_FLTMOVE(REG_FRESULT, REG_FA1);
disp = dseg_add_address(cd, m);
- M_ALD(rd->argintregs[0], REG_PV, disp);
+ M_ALD(REG_A2, REG_PV, disp);
- disp = dseg_add_functionptr(cd, builtin_displaymethodstop);
+ disp = dseg_add_functionptr(cd, builtin_verbosecall_exit);
M_ALD(REG_ITMP2, REG_PV, disp);
M_MTCTR(REG_ITMP2);
M_JSR;
/* mark trace code */
M_NOP;
-}
#endif /* !defined(NDEBUG) */
+}
/*
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