Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: emit.c 4398 2006-01-31 23:43:08Z twisti $
-
*/
#include "vm/types.h"
#include <assert.h>
+#include <stdint.h>
#include "md-abi.h"
#include "mm/memory.h"
-#if defined(ENABLE_THREADS)
-# include "threads/native/lock.h"
-#endif
+#include "threads/lock-common.h"
-#include "vm/builtin.h"
#include "vm/exceptions.h"
#include "vm/jit/abi.h"
#include "vm/jit/dseg.h"
#include "vm/jit/emit-common.h"
#include "vm/jit/jit.h"
+#include "vm/jit/patcher-common.h"
#include "vm/jit/replace.h"
+#include "vm/jit/trace.h"
#include "vmcore/options.h"
if (IS_INMEMORY(src->flags)) {
COUNT_SPILLS;
- disp = src->vv.regoff * 8;
+ disp = src->vv.regoff;
switch (src->type) {
case TYPE_INT:
if (IS_INMEMORY(dst->flags)) {
COUNT_SPILLS;
- disp = dst->vv.regoff * 8;
+ disp = dst->vv.regoff;
switch (dst->type) {
case TYPE_INT:
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_ILD(REG_ITMP3, s1, OFFSET(java_array_t, size));
M_CMPULT(s2, REG_ITMP3, REG_ITMP3);
M_BNEZ(REG_ITMP3, 1);
M_ALD_INTERN(s2, REG_ZERO, EXCEPTION_HARDWARE_ARRAYINDEXOUTOFBOUNDS);
}
+/* emit_arraystore_check *******************************************************
+
+ Emit an ArrayStoreException check.
+
+*******************************************************************************/
+
+void emit_arraystore_check(codegendata *cd, instruction *iptr)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_BNEZ(REG_RESULT, 1);
+ /* Destination register must not be REG_ZERO, because then no
+ SIGSEGV is thrown. */
+ M_ALD_INTERN(REG_RESULT, REG_ZERO, EXCEPTION_HARDWARE_ARRAYSTORE);
+ }
+}
+
+
/* emit_classcast_check ********************************************************
Emit a ClassCastException check.
}
-/* emit_patcher_stubs **********************************************************
+/* emit_trap_compiler **********************************************************
- Generates the code for the patcher stubs.
+ Emit a trap instruction which calls the JIT compiler.
*******************************************************************************/
-void emit_patcher_stubs(jitdata *jd)
+void emit_trap_compiler(codegendata *cd)
{
- codegendata *cd;
- patchref *pref;
- u4 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(100);
-
- /* Get machine code which is patched back in later. The
- call is 1 instruction word long. */
-
- tmpmcodeptr = (u1 *) (cd->mcodebase + pref->branchpos);
-
- mcode = *((u4 *) tmpmcodeptr);
-
- /* Patch in the call to call the following code (done at
- compile time). */
-
- savedmcodeptr = cd->mcodeptr; /* save current mcodeptr */
- cd->mcodeptr = tmpmcodeptr; /* set mcodeptr to patch position */
-
- disp = ((u4 *) savedmcodeptr) - (((u4 *) tmpmcodeptr) + 1);
- M_BSR(REG_ITMP3, disp);
-
- cd->mcodeptr = savedmcodeptr; /* restore the current mcodeptr */
-
- /* create stack frame */
-
- M_LSUB_IMM(REG_SP, 6 * 8, REG_SP);
-
- /* move return address onto stack */
-
- M_AST(REG_ITMP3, REG_SP, 5 * 8);
-
- /* move pointer to java_objectheader onto stack */
-
-#if defined(ENABLE_THREADS)
- /* create a virtual java_objectheader */
-
- (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 */
-
- M_LDA(REG_ITMP3, REG_PV, disp);
- M_AST(REG_ITMP3, REG_SP, 4 * 8);
-#else
- /* nothing to do */
-#endif
-
- /* move machine code onto stack */
-
- disp = dseg_add_s4(cd, mcode);
- M_ILD(REG_ITMP3, REG_PV, disp);
- M_IST(REG_ITMP3, REG_SP, 3 * 8);
-
- /* move class/method/field reference onto stack */
-
- disp = dseg_add_address(cd, pref->ref);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST(REG_ITMP3, REG_SP, 2 * 8);
-
- /* move data segment displacement onto stack */
-
- disp = dseg_add_s4(cd, pref->disp);
- M_ILD(REG_ITMP3, REG_PV, disp);
- M_IST(REG_ITMP3, REG_SP, 1 * 8);
-
- /* move patcher function pointer onto stack */
-
- disp = dseg_add_functionptr(cd, pref->patcher);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST(REG_ITMP3, REG_SP, 0 * 8);
-
- if (targetdisp == 0) {
- targetdisp = ((u4 *) cd->mcodeptr) - ((u4 *) cd->mcodebase);
-
- disp = dseg_add_functionptr(cd, asm_patcher_wrapper);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_JMP(REG_ZERO, REG_ITMP3);
- }
- else {
- disp = (((u4 *) cd->mcodebase) + targetdisp) -
- (((u4 *) cd->mcodeptr) + 1);
-
- M_BR(disp);
- }
- }
+ M_ALD_INTERN(REG_METHODPTR, REG_ZERO, EXCEPTION_HARDWARE_COMPILER);
}
-/* emit_replacement_stubs ******************************************************
+/* emit_trap *******************************************************************
- Generates the code for the replacement stubs.
+ Emit a trap instruction and return the original machine code.
*******************************************************************************/
-#if defined(ENABLE_REPLACEMENT)
-void emit_replacement_stubs(jitdata *jd)
+uint32_t emit_trap(codegendata *cd)
{
- codegendata *cd;
- codeinfo *code;
- rplpoint *rplp;
- s4 disp;
- s4 i;
-#if !defined(NDEBUG)
- u1 *savedmcodeptr;
-#endif
-
- /* get required compiler data */
-
- cd = jd->cd;
- code = jd->code;
-
- rplp = code->rplpoints;
-
- /* store beginning of replacement stubs */
-
- code->replacementstubs = (u1*) (cd->mcodeptr - cd->mcodebase);
-
- for (i = 0; i < code->rplpointcount; ++i, ++rplp) {
- /* do not generate stubs for non-trappable points */
-
- if (rplp->flags & RPLPOINT_FLAG_NOTRAP)
- continue;
-
- /* check code segment size */
-
- MCODECHECK(100);
-
-#if !defined(NDEBUG)
- savedmcodeptr = cd->mcodeptr;
-#endif
-
- /* create stack frame - 16-byte aligned */
+ uint32_t mcode;
- M_LSUB_IMM(REG_SP, 2 * 8, REG_SP);
+ /* Get machine code which is patched back in later. The
+ trap is 1 instruction word long. */
- /* push address of `rplpoint` struct */
+ mcode = *((u4 *) cd->mcodeptr);
- disp = dseg_add_address(cd, rplp);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST(REG_ITMP3, REG_SP, 0 * 8);
+ /* Destination register must not be REG_ZERO, because then no
+ SIGSEGV is thrown. */
+ M_ALD_INTERN(REG_RESULT, REG_ZERO, EXCEPTION_HARDWARE_PATCHER);
- /* jump to replacement function */
-
- disp = dseg_add_functionptr(cd, asm_replacement_out);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_JMP(REG_ZERO, REG_ITMP3);
-
- assert((cd->mcodeptr - savedmcodeptr) == 4*REPLACEMENT_STUB_SIZE);
- }
+ return mcode;
}
-#endif /* defined(ENABLE_REPLACEMENT) */
/* emit_verbosecall_enter ******************************************************
void emit_verbosecall_enter(jitdata *jd)
{
methodinfo *m;
+ codeinfo *code;
codegendata *cd;
registerdata *rd;
methoddesc *md;
+ int32_t stackframesize;
s4 disp;
- s4 i, t;
+ s4 i, j, s;
/* get required compiler data */
- m = jd->m;
- cd = jd->cd;
- rd = jd->rd;
+ m = jd->m;
+ code = jd->code;
+ cd = jd->cd;
+ rd = jd->rd;
md = m->parseddesc;
M_NOP;
- M_LDA(REG_SP, REG_SP, -((ARG_CNT + TMP_CNT + 2) * 8));
- M_AST(REG_RA, REG_SP, 1 * 8);
+ stackframesize = ARG_CNT + TMP_CNT + md->paramcount + 1;
- /* save argument registers */
+ M_LDA(REG_SP, REG_SP, -(stackframesize * 8));
+ M_AST(REG_RA, REG_SP, 0 * 8);
+
+ /* save all argument and temporary registers for leaf methods */
- for (i = 0; i < INT_ARG_CNT; i++)
- M_LST(abi_registers_integer_argument[i], REG_SP, (2 + i) * 8);
+ if (code_is_leafmethod(code)) {
+ j = 1 + md->paramcount;
- for (i = 0; i < FLT_ARG_CNT; i++)
- M_DST(abi_registers_float_argument[i], REG_SP, (2 + INT_ARG_CNT + i) * 8);
+ for (i = 0; i < INT_ARG_CNT; i++, j++)
+ M_LST(abi_registers_integer_argument[i], REG_SP, j * 8);
- /* save temporary registers for leaf methods */
+ for (i = 0; i < FLT_ARG_CNT; i++, j++)
+ M_DST(abi_registers_float_argument[i], REG_SP, j * 8);
- if (jd->isleafmethod) {
- for (i = 0; i < INT_TMP_CNT; i++)
- M_LST(rd->tmpintregs[i], REG_SP, (2 + ARG_CNT + i) * 8);
+ for (i = 0; i < INT_TMP_CNT; i++, j++)
+ M_LST(rd->tmpintregs[i], REG_SP, j * 8);
- for (i = 0; i < FLT_TMP_CNT; i++)
- M_DST(rd->tmpfltregs[i], REG_SP, (2 + ARG_CNT + INT_TMP_CNT + i) * 8);
+ for (i = 0; i < FLT_TMP_CNT; i++, j++)
+ M_DST(rd->tmpfltregs[i], REG_SP, j * 8);
}
- /* load float arguments into integer registers */
+ /* save argument registers */
- for (i = 0; i < md->paramcount && i < INT_ARG_CNT; i++) {
- t = md->paramtypes[i].type;
+ for (i = 0; i < md->paramcount; i++) {
+ if (!md->params[i].inmemory) {
+ s = md->params[i].regoff;
- if (IS_FLT_DBL_TYPE(t)) {
- if (IS_2_WORD_TYPE(t)) {
- M_DST(abi_registers_float_argument[i], REG_SP, 0 * 8);
- M_LLD(abi_registers_integer_argument[i], REG_SP, 0 * 8);
- }
- else {
- M_FST(abi_registers_float_argument[i], REG_SP, 0 * 8);
- M_ILD(abi_registers_integer_argument[i], REG_SP, 0 * 8);
+ switch (md->paramtypes[i].type) {
+ case TYPE_ADR:
+ case TYPE_INT:
+ case TYPE_LNG:
+ M_LST(s, REG_SP, (1 + i) * 8);
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
+ M_DST(s, REG_SP, (1 + i) * 8);
+ break;
}
}
}
disp = dseg_add_address(cd, m);
- M_ALD(REG_ITMP1, REG_PV, disp);
- M_AST(REG_ITMP1, REG_SP, 0 * 8);
- disp = dseg_add_functionptr(cd, builtin_verbosecall_enter);
+ M_ALD(REG_A0, REG_PV, disp);
+ M_AADD_IMM(REG_SP, 1 * 8, REG_A1);
+ M_LDA(REG_A2, REG_SP, stackframesize * 8 + cd->stackframesize * 8);
+
+ disp = dseg_add_functionptr(cd, trace_java_call_enter);
M_ALD(REG_PV, REG_PV, disp);
M_JSR(REG_RA, REG_PV);
disp = (s4) (cd->mcodeptr - cd->mcodebase);
M_LDA(REG_PV, REG_RA, -disp);
- M_ALD(REG_RA, REG_SP, 1 * 8);
+ M_ALD(REG_RA, REG_SP, 0 * 8);
/* restore argument registers */
- for (i = 0; i < INT_ARG_CNT; i++)
- M_LLD(abi_registers_integer_argument[i], REG_SP, (2 + i) * 8);
+ for (i = 0; i < md->paramcount; i++) {
+ if (!md->params[i].inmemory) {
+ s = md->params[i].regoff;
+
+ switch (md->paramtypes[i].type) {
+ case TYPE_ADR:
+ case TYPE_INT:
+ case TYPE_LNG:
+ M_LLD(s, REG_SP, (1 + i) * 8);
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
+ M_DLD(s, REG_SP, (1 + i) * 8);
+ break;
+ }
+ }
+ }
+
+ /* restore all argument and temporary registers for leaf methods */
+
+ if (code_is_leafmethod(code)) {
+ j = 1 + md->paramcount;
- for (i = 0; i < FLT_ARG_CNT; i++)
- M_DLD(abi_registers_float_argument[i], REG_SP, (2 + INT_ARG_CNT + i) * 8);
+ for (i = 0; i < INT_ARG_CNT; i++, j++)
+ M_LLD(abi_registers_integer_argument[i], REG_SP, j * 8);
- /* restore temporary registers for leaf methods */
+ for (i = 0; i < FLT_ARG_CNT; i++, j++)
+ M_DLD(abi_registers_float_argument[i], REG_SP, j * 8);
- if (jd->isleafmethod) {
- for (i = 0; i < INT_TMP_CNT; i++)
- M_LLD(rd->tmpintregs[i], REG_SP, (2 + ARG_CNT + i) * 8);
+ for (i = 0; i < INT_TMP_CNT; i++, j++)
+ M_LLD(rd->tmpintregs[i], REG_SP, j * 8);
- for (i = 0; i < FLT_TMP_CNT; i++)
- M_DLD(rd->tmpfltregs[i], REG_SP, (2 + ARG_CNT + INT_TMP_CNT + i) * 8);
+ for (i = 0; i < FLT_TMP_CNT; i++, j++)
+ M_DLD(rd->tmpfltregs[i], REG_SP, j * 8);
}
- M_LDA(REG_SP, REG_SP, (ARG_CNT + TMP_CNT + 2) * 8);
+ M_LDA(REG_SP, REG_SP, stackframesize * 8);
/* mark trace code */
Generates the code for the call trace.
- void builtin_verbosecall_exit(s8 l, double d, float f, methodinfo *m);
-
*******************************************************************************/
#if !defined(NDEBUG)
methodinfo *m;
codegendata *cd;
registerdata *rd;
+ methoddesc *md;
s4 disp;
/* get required compiler data */
cd = jd->cd;
rd = jd->rd;
+ md = m->parseddesc;
+
/* mark trace code */
M_NOP;
- M_ASUB_IMM(REG_SP, 4 * 8, REG_SP);
+ M_ASUB_IMM(REG_SP, 2 * 8, REG_SP);
M_AST(REG_RA, REG_SP, 0 * 8);
- M_LST(REG_RESULT, REG_SP, 1 * 8);
- M_DST(REG_FRESULT, REG_SP, 2 * 8);
-
- M_MOV(REG_RESULT, REG_A0);
- M_FMOV(REG_FRESULT, REG_FA1);
- M_FMOV(REG_FRESULT, REG_FA2);
+ /* save return value */
+
+ switch (md->returntype.type) {
+ case TYPE_ADR:
+ case TYPE_INT:
+ case TYPE_LNG:
+ M_LST(REG_RESULT, REG_SP, 1 * 8);
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
+ M_DST(REG_FRESULT, REG_SP, 1 * 8);
+ break;
+ }
disp = dseg_add_address(cd, m);
- M_ALD(REG_A3, REG_PV, disp);
+ M_ALD(REG_A0, REG_PV, disp);
+ M_AADD_IMM(REG_SP, 1 * 8, REG_A1);
- disp = dseg_add_functionptr(cd, builtin_verbosecall_exit);
+ disp = dseg_add_functionptr(cd, trace_java_call_exit);
M_ALD(REG_PV, REG_PV, disp);
M_JSR(REG_RA, REG_PV);
disp = (cd->mcodeptr - cd->mcodebase);
M_LDA(REG_PV, REG_RA, -disp);
- M_DLD(REG_FRESULT, REG_SP, 2 * 8);
- M_LLD(REG_RESULT, REG_SP, 1 * 8);
+ /* restore return value */
+
+ switch (md->returntype.type) {
+ case TYPE_ADR:
+ case TYPE_INT:
+ case TYPE_LNG:
+ M_LLD(REG_RESULT, REG_SP, 1 * 8);
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
+ M_DLD(REG_FRESULT, REG_SP, 1 * 8);
+ break;
+ }
M_ALD(REG_RA, REG_SP, 0 * 8);
- M_AADD_IMM(REG_SP, 4 * 8, REG_SP);
+ M_AADD_IMM(REG_SP, 2 * 8, REG_SP);
/* mark trace code */
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