/* src/vm/jit/mips/codegen.c - machine code generator for MIPS
- 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/arch.h"
#include "vm/jit/mips/codegen.h"
-#include "mm/memory.h"
+#include "mm/memory.hpp"
-#include "native/localref.h"
-#include "native/native.h"
+#include "native/localref.hpp"
+#include "native/native.hpp"
-#include "threads/lock-common.h"
+#include "threads/lock.hpp"
#include "vm/jit/builtin.hpp"
-#include "vm/class.h"
+#include "vm/class.hpp"
#include "vm/exceptions.hpp"
#include "vm/options.h"
#include "vm/vm.hpp"
#include "vm/jit/dseg.h"
#include "vm/jit/emit-common.hpp"
#include "vm/jit/jit.hpp"
-#include "vm/jit/linenumbertable.h"
+#include "vm/jit/linenumbertable.hpp"
+#include "vm/jit/parse.hpp"
#include "vm/jit/patcher-common.hpp"
#include "vm/jit/reg.h"
-#include "vm/jit/replace.hpp"
-#include "vm/jit/trap.h"
+#include "vm/jit/stacktrace.hpp"
+#include "vm/jit/trap.hpp"
-#if defined(ENABLE_LSRA)
-# include "vm/jit/allocator/lsra.h"
-#endif
-
-
-/* codegen_emit ****************************************************************
-
- Generates machine code.
-*******************************************************************************/
-
-bool codegen_emit(jitdata *jd)
+/**
+ * Generates machine code for the method prolog.
+ */
+void codegen_emit_prolog(jitdata* jd)
{
- methodinfo *m;
- codeinfo *code;
- codegendata *cd;
- registerdata *rd;
- s4 len, s1, s2, s3, d, disp;
- varinfo *var;
- basicblock *bptr;
- instruction *iptr;
- u2 currentline;
- constant_classref *cr;
- unresolved_class *uc;
- methodinfo *lm; /* local methodinfo for ICMD_INVOKE* */
- unresolved_method *um;
- builtintable_entry *bte;
- methoddesc *md;
- fieldinfo *fi;
- unresolved_field *uf;
- s4 fieldtype;
- s4 varindex;
-
- /* get required compiler data */
-
- m = jd->m;
- code = jd->code;
- cd = jd->cd;
- rd = jd->rd;
-
- /* prevent compiler warnings */
-
- s1 = 0;
- d = 0;
- fieldtype = 0;
- lm = NULL;
- um = NULL;
- bte = NULL;
- currentline = 0;
- uf = NULL;
-
- {
- s4 i, p, t, l;
- s4 savedregs_num;
-
- savedregs_num = code_is_leafmethod(code) ? 0 : 1; /* space to save the RA */
-
- /* space to save used callee saved registers */
-
- savedregs_num += (INT_SAV_CNT - rd->savintreguse);
- savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
-
- cd->stackframesize = rd->memuse + savedregs_num;
-
-#if defined(ENABLE_THREADS)
- /* space to save argument of monitor_enter */
-
- if (checksync && code_is_synchronized(code)) {
-# if SIZEOF_VOID_P == 8
- cd->stackframesize++;
-# else
- rd->memuse++;
- cd->stackframesize += 2;
-# endif
- }
-#endif
-
- /* keep stack 16-byte aligned */
-
- if (cd->stackframesize & 1)
- cd->stackframesize++;
-
- /* create method header */
-
- (void) dseg_add_unique_address(cd, code); /* CodeinfoPointer */
- (void) dseg_add_unique_s4(cd, cd->stackframesize * 8); /* FrameSize */
-
- code->synchronizedoffset = rd->memuse * 8;
-
- /* REMOVEME: We still need it for exception handling in assembler. */
-
- if (code_is_leafmethod(code))
- (void) dseg_add_unique_s4(cd, 1);
- else
- (void) dseg_add_unique_s4(cd, 0);
-
- (void) dseg_add_unique_s4(cd, INT_SAV_CNT - rd->savintreguse); /* IntSave */
- (void) dseg_add_unique_s4(cd, FLT_SAV_CNT - rd->savfltreguse); /* FltSave */
+ varinfo* var;
+ methoddesc* md;
+ int32_t s1;
+ int32_t p, t, l;
+ int32_t varindex;
+ int i;
+
+ // Get required compiler data.
+ methodinfo* m = jd->m;
+ codeinfo* code = jd->code;
+ codegendata* cd = jd->cd;
+ registerdata* rd = jd->rd;
/* create stack frame (if necessary) */
if (!md->params[p].inmemory) {
if (!(var->flags & INMEMORY)) {
if (IS_2_WORD_TYPE(t))
- M_DBLMOVE(s1, var->vv.regoff);
+ emit_dmove(cd, s1, var->vv.regoff);
else
- M_FLTMOVE(s1, var->vv.regoff);
+ emit_fmove(cd, s1, var->vv.regoff);
}
else {
if (IS_2_WORD_TYPE(t))
}
}
}
+}
- /* call monitorenter function */
-
-#if defined(ENABLE_THREADS)
- if (checksync && code_is_synchronized(code)) {
- /* stack offset for monitor argument */
-
- s1 = rd->memuse;
-
-# if !defined(NDEBUG)
- if (opt_verbosecall) {
- M_LDA(REG_SP, REG_SP, -(INT_ARG_CNT + FLT_ARG_CNT) * 8);
-
- for (p = 0; p < INT_ARG_CNT; p++)
- M_AST(abi_registers_integer_argument[p], REG_SP, p * 8);
-
- for (p = 0; p < FLT_ARG_CNT; p++)
- M_DST(abi_registers_float_argument[p], REG_SP, (INT_ARG_CNT + p) * 8);
-
- s1 += INT_ARG_CNT + FLT_ARG_CNT;
- }
-# endif
- /* get correct lock object */
+/**
+ * Generates machine code for the method epilog.
+ */
+void codegen_emit_epilog(jitdata* jd)
+{
+ int32_t p;
+ int i;
- if (m->flags & ACC_STATIC) {
- disp = dseg_add_address(cd, &m->clazz->object.header);
- M_ALD(REG_A0, REG_PV, disp);
- disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
- M_ALD(REG_ITMP3, REG_PV, disp);
- }
- else {
-/* emit_nullpointer_check(cd, iptr, REG_A0); */
- M_BNEZ(REG_A0, 2);
- disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
- M_ALD(REG_ITMP3, REG_PV, disp); /* branch delay */
- M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_NullPointerException);
- }
+ // Get required compiler data.
+ codeinfo* code = jd->code;
+ codegendata* cd = jd->cd;
+ registerdata* rd = jd->rd;
- M_JSR(REG_RA, REG_ITMP3);
- M_AST(REG_A0, REG_SP, s1 * 8); /* branch delay */
+ p = cd->stackframesize;
-# if !defined(NDEBUG)
- if (opt_verbosecall) {
- for (p = 0; p < INT_ARG_CNT; p++)
- M_ALD(abi_registers_integer_argument[p], REG_SP, p * 8);
+ /* restore return address */
- for (p = 0; p < FLT_ARG_CNT; p++)
- M_DLD(abi_registers_float_argument[p], REG_SP, (INT_ARG_CNT + p) * 8);
+ if (!code_is_leafmethod(code)) {
+ p--; M_ALD(REG_RA, REG_SP, p * 8);
+ }
+ /* restore saved registers */
- M_LDA(REG_SP, REG_SP, (INT_ARG_CNT + FLT_ARG_CNT) * 8);
- }
-# endif
+ for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
+ p--; M_ALD(rd->savintregs[i], REG_SP, p * 8);
}
-#endif
+ for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
+ p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
}
-#if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- emit_verbosecall_enter(jd);
-#endif
-
- /* end of header generation */
-
- /* create replacement points */
-
- REPLACEMENT_POINTS_INIT(cd, jd);
-
- /* walk through all basic blocks */
-
- for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
+ /* deallocate stack and return */
- /* handle replacement points */
+ if (cd->stackframesize) {
+ int32_t lo, hi, disp;
- REPLACEMENT_POINT_BLOCK_START(cd, bptr);
+ disp = cd->stackframesize * 8;
+ lo = (short) (disp);
+ hi = (short) (((disp) - lo) >> 16);
- /* store relative start of block */
-
- bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
-
- if (bptr->flags >= BBREACHED) {
- /* branch resolving */
-
- codegen_resolve_branchrefs(cd, bptr);
-
- /* copy interface registers to their destination */
-
- len = bptr->indepth;
- MCODECHECK(64+len);
-#if defined(ENABLE_LSRA)
- if (opt_lsra) {
- while (len) {
- len--;
- src = bptr->invars[len];
- if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
- /* d = reg_of_var(m, src, REG_ITMP1); */
- if (!(src->flags & INMEMORY))
- d = src->vv.regoff;
- else
- d = REG_ITMP1;
- M_INTMOVE(REG_ITMP1, d);
- emit_store(jd, NULL, src, d);
- }
- }
+ if (hi == 0) {
+ M_RET(REG_RA);
+ M_AADD_IMM(REG_SP, lo, REG_SP); /* delay slot */
} else {
-#endif
- while (len) {
- len--;
- var = VAR(bptr->invars[len]);
- if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
- d = codegen_reg_of_var(0, var, REG_ITMP1);
- M_INTMOVE(REG_ITMP1, d);
- emit_store(jd, NULL, var, d);
- }
- else {
- assert((var->flags & INOUT));
- }
- }
-#if defined(ENABLE_LSRA)
+ M_LUI(REG_ITMP3,hi);
+ M_AADD_IMM(REG_ITMP3,lo,REG_ITMP3);
+ M_RET(REG_RA);
+ M_AADD(REG_ITMP3,REG_SP,REG_SP); /* delay slot */
}
-#endif
- /* walk through all instructions */
-
- len = bptr->icount;
-/* currentline = 0; */
-
- for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
- if (iptr->line != currentline) {
- linenumbertable_list_entry_add(cd, iptr->line);
- currentline = iptr->line;
- }
-
- MCODECHECK(64); /* an instruction usually needs < 64 words */
-
- switch (iptr->opc) {
-
- case ICMD_NOP: /* ... ==> ... */
- case ICMD_POP: /* ..., value ==> ... */
- case ICMD_POP2: /* ..., value, value ==> ... */
- break;
-
- case ICMD_INLINE_START:
-
- REPLACEMENT_POINT_INLINE_START(cd, iptr);
- break;
-
- case ICMD_INLINE_BODY:
-
- REPLACEMENT_POINT_INLINE_BODY(cd, iptr);
- linenumbertable_list_entry_add_inline_start(cd, iptr);
- linenumbertable_list_entry_add(cd, iptr->line);
- break;
- case ICMD_INLINE_END:
-
- linenumbertable_list_entry_add_inline_end(cd, iptr);
- linenumbertable_list_entry_add(cd, iptr->line);
- break;
+ } else {
+ M_RET(REG_RA);
+ M_NOP;
+ }
+}
- case ICMD_CHECKNULL: /* ..., objectref ==> ..., objectref */
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- emit_nullpointer_check(cd, iptr, s1);
- break;
+/**
+ * Generates machine code for one ICMD.
+ */
+void codegen_emit_instruction(jitdata* jd, instruction* iptr)
+{
+ varinfo* var;
+ builtintable_entry* bte;
+ methodinfo* lm; // Local methodinfo for ICMD_INVOKE*.
+ unresolved_method* um;
+ fieldinfo* fi;
+ unresolved_field* uf;
+ int32_t fieldtype;
+ int32_t s1, s2, s3, d;
+ int32_t disp;
+
+ // Get required compiler data.
+ codeinfo* code = jd->code;
+ codegendata* cd = jd->cd;
+
+ switch (iptr->opc) {
/* constant operations ************************************************/
- case ICMD_ICONST: /* ... ==> ..., constant */
-
- d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
- ICONST(d, iptr->sx.val.i);
- emit_store_dst(jd, iptr, d);
- break;
-
case ICMD_LCONST: /* ... ==> ..., constant */
#if SIZEOF_VOID_P == 8
d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- cr = iptr->sx.val.c.ref;
+ constant_classref *cr = iptr->sx.val.c.ref;
disp = dseg_add_unique_address(cd, cr);
patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
break;
- /* load/store/copy/move operations ************************************/
-
- case ICMD_ILOAD: /* ... ==> ..., content of local variable */
- case ICMD_LLOAD:
- case ICMD_ALOAD:
- case ICMD_FLOAD:
- case ICMD_DLOAD:
- case ICMD_ISTORE: /* ..., value ==> ... */
- case ICMD_LSTORE:
- case ICMD_FSTORE:
- case ICMD_DSTORE:
- case ICMD_COPY:
- case ICMD_MOVE:
-
- emit_copy(jd, iptr);
- break;
-
- case ICMD_ASTORE:
- if (!(iptr->flags.bits & INS_FLAG_RETADDR))
- emit_copy(jd, iptr);
- break;
-
-
/* integer operations *************************************************/
case ICMD_INEG: /* ..., value ==> ..., - value */
M_IADD(GET_HIGH_REG(s1), REG_ITMP3, GET_HIGH_REG(d));
}
else if ((iptr->sx.val.l >= (-32768 + 1)) && (iptr->sx.val.l < 0)) {
- s1 = emit_load_s1_low(jd, iptr, REG_ITMP2);
+ s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
M_ISUB_IMM(s1, -(iptr->sx.val.l), GET_LOW_REG(d));
M_CMPULT_IMM(GET_LOW_REG(d), iptr->sx.val.l, REG_ITMP3);
- s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
+ s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
M_ISUB_IMM(s1, 1, GET_HIGH_REG(d));
M_IADD(GET_HIGH_REG(d), REG_ITMP3, GET_HIGH_REG(d));
}
else {
- ICONST(REG_ITMP2, iptr->sx.val.l & 0xffffffff);
+ ICONST(REG_ITMP1, iptr->sx.val.l & 0xffffffff);
s1 = emit_load_s1_low(jd, iptr, REG_ITMP3);
- M_IADD(s1, REG_ITMP2, GET_LOW_REG(d));
+ M_IADD(s1, REG_ITMP1, GET_LOW_REG(d));
M_CMPULT(GET_LOW_REG(d), s1, REG_ITMP3);
- s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
+ s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
M_IADD(s1, REG_ITMP3, GET_HIGH_REG(d));
ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
M_IADD(GET_HIGH_REG(d), REG_ITMP3, GET_HIGH_REG(d));
d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
M_ISUB(s1, s2, GET_HIGH_REG(d));
s1 = emit_load_s1_low(jd, iptr, REG_ITMP3);
- s2 = emit_load_s2_low(jd, iptr, REG_ITMP1);
+ s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
M_CMPULT(s1, s2, REG_ITMP3);
M_ISUB(GET_HIGH_REG(d), REG_ITMP3, GET_HIGH_REG(d));
/* if s1 is equal to REG_ITMP3 we have to reload it, since
#else
d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
if ((iptr->sx.val.l >= 0) && (iptr->sx.val.l <= 32768)) {
- s1 = emit_load_s1_low(jd, iptr, REG_ITMP2);
+ s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
M_ISUB_IMM(s1, iptr->sx.val.l, GET_LOW_REG(d));
M_CMPULT_IMM(GET_LOW_REG(d), -(iptr->sx.val.l), REG_ITMP3);
- s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
+ s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
M_ISUB_IMM(s1, 1, GET_HIGH_REG(d));
M_IADD(GET_HIGH_REG(d), REG_ITMP3, GET_HIGH_REG(d));
}
M_IADD(GET_HIGH_REG(s1), REG_ITMP3, GET_HIGH_REG(d));
}
else {
- ICONST(REG_ITMP2, iptr->sx.val.l & 0xffffffff);
+ ICONST(REG_ITMP1, iptr->sx.val.l & 0xffffffff);
s1 = emit_load_s1_low(jd, iptr, REG_ITMP3);
- M_ISUB(s1, REG_ITMP2, GET_LOW_REG(d));
- M_CMPULT(s1, REG_ITMP2, REG_ITMP3);
- s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
+ M_ISUB(s1, REG_ITMP1, GET_LOW_REG(d));
+ M_CMPULT(s1, REG_ITMP1, REG_ITMP3);
+ s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
M_ISUB(s1, REG_ITMP3, GET_HIGH_REG(d));
ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
M_ISUB(GET_HIGH_REG(d), REG_ITMP3, GET_HIGH_REG(d));
M_AND_IMM(d, iptr->sx.val.i, d);
}
else {
- ICONST(REG_ITMP2, iptr->sx.val.i);
- M_AND(s1, REG_ITMP2, d);
+ ICONST(REG_ITMP3, iptr->sx.val.i);
+ M_AND(s1, REG_ITMP3, d);
M_BGEZ(s1, 4);
M_NOP;
M_ISUB(REG_ZERO, s1, d);
- M_AND(d, REG_ITMP2, d);
+ M_AND(d, REG_ITMP3, d);
}
M_ISUB(REG_ZERO, d, d);
emit_store_dst(jd, iptr, d);
s2 = emit_load_s2_low(jd, iptr, REG_ITMP3);
d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
M_AND(s1, s2, GET_LOW_REG(d));
- s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
+ s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);
M_AND(s1, s2, GET_HIGH_REG(d));
#endif
s2 = emit_load_s2_low(jd, iptr, REG_ITMP3);
d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
M_OR(s1, s2, GET_LOW_REG(d));
- s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
+ s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);
M_OR(s1, s2, GET_HIGH_REG(d));
#endif
s2 = emit_load_s2_low(jd, iptr, REG_ITMP3);
d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
M_XOR(s1, s2, GET_LOW_REG(d));
- s1 = emit_load_s1_high(jd, iptr, REG_ITMP2);
+ s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_high(jd, iptr, REG_ITMP3);
M_XOR(s1, s2, GET_HIGH_REG(d));
#endif
M_CMPLT(s1, s2, REG_ITMP3);
M_CMPLT(s2, s1, REG_ITMP1);
M_ISUB(REG_ITMP1, REG_ITMP3, d);
- M_BNEZ(d, 4);
- M_NOP;
+ emit_label_bnez(cd, BRANCH_LABEL_1, d);
s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
M_CMPULT(s1, s2, REG_ITMP3);
M_CMPULT(s2, s1, REG_ITMP1);
M_ISUB(REG_ITMP1, REG_ITMP3, d);
+ emit_label(cd, BRANCH_LABEL_1);
#endif
emit_store_dst(jd, iptr, d);
break;
case ICMD_ATHROW: /* ..., objectref ==> ... (, objectref) */
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- M_INTMOVE(s1, REG_ITMP1_XPTR);
-
-#ifdef ENABLE_VERIFIER
- if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- uc = iptr->sx.s23.s2.uc;
-
- patcher_add_patch_ref(jd, PATCHER_resolve_class, uc, 0);
- }
-#endif /* ENABLE_VERIFIER */
-
+ // Some processor implementations seem to have a problem when using
+ // the JALR instruction with (reg_dest == reg_src), so avoid that.
disp = dseg_add_functionptr(cd, asm_handle_exception);
- M_ALD(REG_ITMP2, REG_PV, disp);
- M_JSR(REG_ITMP2_XPC, REG_ITMP2);
+ M_ALD(REG_ITMP3, REG_PV, disp);
+ M_JSR(REG_ITMP2_XPC, REG_ITMP3);
M_NOP;
M_NOP; /* nop ensures that XPC is less than the end */
/* of basic block */
- ALIGNCODENOP;
- break;
-
- case ICMD_GOTO: /* ... ==> ... */
- case ICMD_RET: /* ... ==> ... */
-
- emit_br(cd, iptr->dst.block);
- ALIGNCODENOP;
- break;
-
- case ICMD_JSR: /* ... ==> ... */
-
- emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
- ALIGNCODENOP;
- break;
-
- case ICMD_IFNULL: /* ..., value ==> ... */
- case ICMD_IFNONNULL:
-
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- emit_bccz(cd, iptr->dst.block, iptr->opc - ICMD_IFNULL, s1, BRANCH_OPT_NONE);
break;
case ICMD_IFEQ: /* ..., value ==> ... */
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- if (iptr->sx.val.i == 0)
- emit_beqz(cd, iptr->dst.block, s1);
- else {
- ICONST(REG_ITMP2, iptr->sx.val.i);
- emit_beq(cd, iptr->dst.block, s1, REG_ITMP2);
- }
+ ICONST(REG_ITMP2, iptr->sx.val.i);
+ emit_beq(cd, iptr->dst.block, s1, REG_ITMP2);
break;
case ICMD_IFLT: /* ..., value ==> ... */
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- if (iptr->sx.val.i == 0)
- emit_bltz(cd, iptr->dst.block, s1);
+ if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
+ M_CMPLT_IMM(s1, iptr->sx.val.i, REG_ITMP1);
else {
- if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
- M_CMPLT_IMM(s1, iptr->sx.val.i, REG_ITMP1);
- else {
- ICONST(REG_ITMP2, iptr->sx.val.i);
- M_CMPLT(s1, REG_ITMP2, REG_ITMP1);
- }
- emit_bnez(cd, iptr->dst.block, REG_ITMP1);
+ ICONST(REG_ITMP2, iptr->sx.val.i);
+ M_CMPLT(s1, REG_ITMP2, REG_ITMP1);
}
+ emit_bnez(cd, iptr->dst.block, REG_ITMP1);
break;
case ICMD_IFLE: /* ..., value ==> ... */
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- if (iptr->sx.val.i == 0)
- emit_blez(cd, iptr->dst.block, s1);
+ if ((iptr->sx.val.i >= -32769) && (iptr->sx.val.i <= 32766)) {
+ M_CMPLT_IMM(s1, iptr->sx.val.i + 1, REG_ITMP1);
+ emit_bnez(cd, iptr->dst.block, REG_ITMP1);
+ }
else {
- if ((iptr->sx.val.i >= -32769) && (iptr->sx.val.i <= 32766)) {
- M_CMPLT_IMM(s1, iptr->sx.val.i + 1, REG_ITMP1);
- emit_bnez(cd, iptr->dst.block, REG_ITMP1);
- }
- else {
- ICONST(REG_ITMP2, iptr->sx.val.i);
- M_CMPGT(s1, REG_ITMP2, REG_ITMP1);
- emit_beqz(cd, iptr->dst.block, REG_ITMP1);
- }
+ ICONST(REG_ITMP2, iptr->sx.val.i);
+ M_CMPGT(s1, REG_ITMP2, REG_ITMP1);
+ emit_beqz(cd, iptr->dst.block, REG_ITMP1);
}
break;
case ICMD_IFNE: /* ..., value ==> ... */
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- if (iptr->sx.val.i == 0)
- emit_bnez(cd, iptr->dst.block, s1);
- else {
- ICONST(REG_ITMP2, iptr->sx.val.i);
- emit_bne(cd, iptr->dst.block, s1, REG_ITMP2);
- }
+ ICONST(REG_ITMP2, iptr->sx.val.i);
+ emit_bne(cd, iptr->dst.block, s1, REG_ITMP2);
break;
case ICMD_IFGT: /* ..., value ==> ... */
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- if (iptr->sx.val.i == 0)
- emit_bgtz(cd, iptr->dst.block, s1);
+ if ((iptr->sx.val.i >= -32769) && (iptr->sx.val.i <= 32766)) {
+ M_CMPLT_IMM(s1, iptr->sx.val.i + 1, REG_ITMP1);
+ emit_beqz(cd, iptr->dst.block, REG_ITMP1);
+ }
else {
- if ((iptr->sx.val.i >= -32769) && (iptr->sx.val.i <= 32766)) {
- M_CMPLT_IMM(s1, iptr->sx.val.i + 1, REG_ITMP1);
- emit_beqz(cd, iptr->dst.block, REG_ITMP1);
- }
- else {
- ICONST(REG_ITMP2, iptr->sx.val.i);
- M_CMPGT(s1, REG_ITMP2, REG_ITMP1);
- emit_bnez(cd, iptr->dst.block, REG_ITMP1);
- }
+ ICONST(REG_ITMP2, iptr->sx.val.i);
+ M_CMPGT(s1, REG_ITMP2, REG_ITMP1);
+ emit_bnez(cd, iptr->dst.block, REG_ITMP1);
}
break;
case ICMD_IFGE: /* ..., value ==> ... */
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- if (iptr->sx.val.i == 0)
- emit_bgez(cd, iptr->dst.block, s1);
+ if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
+ M_CMPLT_IMM(s1, iptr->sx.val.i, REG_ITMP1);
else {
- if ((iptr->sx.val.i >= -32768) && (iptr->sx.val.i <= 32767))
- M_CMPLT_IMM(s1, iptr->sx.val.i, REG_ITMP1);
- else {
- ICONST(REG_ITMP2, iptr->sx.val.i);
- M_CMPLT(s1, REG_ITMP2, REG_ITMP1);
- }
- emit_beqz(cd, iptr->dst.block, REG_ITMP1);
+ ICONST(REG_ITMP2, iptr->sx.val.i);
+ M_CMPLT(s1, REG_ITMP2, REG_ITMP1);
}
+ emit_beqz(cd, iptr->dst.block, REG_ITMP1);
break;
case ICMD_IF_LEQ: /* ..., value ==> ... */
ICONST(REG_ITMP2, iptr->sx.val.l >> 32);
M_CMPLT(s1, REG_ITMP2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
+ emit_label_bne(cd, BRANCH_LABEL_1, s1, REG_ITMP2);
s2 = emit_load_s1_low(jd, iptr, REG_ITMP3);
- M_BNE(s1, REG_ITMP2, 5); /* XXX */
- M_NOP;
ICONST(REG_ITMP2, iptr->sx.val.l & 0xffffffff);
M_CMPULT(s2, REG_ITMP2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
+ emit_label(cd, BRANCH_LABEL_1);
}
#endif
break;
#else
if (iptr->sx.val.l == 0) {
s1 = emit_load_s1(jd, iptr, REG_ITMP12_PACKED);
- M_BGTZ(GET_HIGH_REG(s1), 5); /* XXX */
- M_NOP;
+ emit_label_bgtz(cd, BRANCH_LABEL_1, GET_HIGH_REG(s1));
emit_bltz(cd, iptr->dst.block, GET_HIGH_REG(s1));
- emit_beqz(cd, iptr->dst.block, GET_LOW_REG(s1));
+ emit_beqz(cd, iptr->dst.block, GET_LOW_REG(s1));
+ emit_label(cd, BRANCH_LABEL_1);
}
else {
s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
ICONST(REG_ITMP2, iptr->sx.val.l >> 32);
M_CMPLT(s1, REG_ITMP2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
+ emit_label_bne(cd, BRANCH_LABEL_1, s1, REG_ITMP2);
s2 = emit_load_s1_low(jd, iptr, REG_ITMP3);
- M_BNE(s1, REG_ITMP2, 5); /* XXX */
- M_NOP;
ICONST(REG_ITMP2, iptr->sx.val.l & 0xffffffff);
M_CMPUGT(s2, REG_ITMP2, REG_ITMP3);
emit_beqz(cd, iptr->dst.block, REG_ITMP3);
+ emit_label(cd, BRANCH_LABEL_1);
}
#endif
break;
if (iptr->sx.val.l == 0) {
s1 = emit_load_s1(jd, iptr, REG_ITMP12_PACKED);
emit_bgtz(cd, iptr->dst.block, GET_HIGH_REG(s1));
- M_BLTZ(GET_HIGH_REG(s1), 3); /* XXX */
- M_NOP;
+ emit_label_bltz(cd, BRANCH_LABEL_1, GET_HIGH_REG(s1));
emit_bnez(cd, iptr->dst.block, GET_LOW_REG(s1));
+ emit_label(cd, BRANCH_LABEL_1);
}
else {
s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
ICONST(REG_ITMP2, iptr->sx.val.l >> 32);
M_CMPGT(s1, REG_ITMP2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
+ emit_label_bne(cd, BRANCH_LABEL_1, s1, REG_ITMP2);
s2 = emit_load_s1_low(jd, iptr, REG_ITMP3);
- M_BNE(s1, REG_ITMP2, 5); /* XXX */
- M_NOP;
ICONST(REG_ITMP2, iptr->sx.val.l & 0xffffffff);
M_CMPUGT(s2, REG_ITMP2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
+ emit_label(cd, BRANCH_LABEL_1);
}
#endif
break;
ICONST(REG_ITMP2, iptr->sx.val.l >> 32);
M_CMPGT(s1, REG_ITMP2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
+ emit_label_bne(cd, BRANCH_LABEL_1, s1, REG_ITMP2);
s2 = emit_load_s1_low(jd, iptr, REG_ITMP3);
- M_BNE(s1, REG_ITMP2, 5); /* XXX */
- M_NOP;
ICONST(REG_ITMP2, iptr->sx.val.l & 0xffffffff);
M_CMPULT(s2, REG_ITMP2, REG_ITMP3);
emit_beqz(cd, iptr->dst.block, REG_ITMP3);
+ emit_label(cd, BRANCH_LABEL_1);
}
#endif
break;
- case ICMD_IF_ICMPEQ: /* ..., value, value ==> ... */
- case ICMD_IF_ACMPEQ: /* op1 = target JavaVM pc */
#if SIZEOF_VOID_P == 8
case ICMD_IF_LCMPEQ:
#endif
s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_high(jd, iptr, REG_ITMP2);
- M_BNE(s1, s2, 3); /* XXX TWISTI: uff, that is a problem */
- M_NOP;
+ emit_label_bne(cd, BRANCH_LABEL_1, s1, s2);
s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
emit_beq(cd, iptr->dst.block, s1, s2);
+ emit_label(cd, BRANCH_LABEL_1);
break;
#endif
- case ICMD_IF_ICMPNE: /* ..., value, value ==> ... */
- case ICMD_IF_ACMPNE: /* op1 = target JavaVM pc */
#if SIZEOF_VOID_P == 8
case ICMD_IF_LCMPNE:
#endif
M_CMPLT(s1, s2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
M_CMPGT(s1, s2, REG_ITMP3);
- /* load low-bits before the branch, so we know the distance */
+ emit_label_bnez(cd, BRANCH_LABEL_1, REG_ITMP3);
s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
- M_BNEZ(REG_ITMP3, 4); /* XXX */
- M_NOP;
M_CMPULT(s1, s2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
+ emit_label(cd, BRANCH_LABEL_1);
break;
#endif
M_CMPGT(s1, s2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
M_CMPLT(s1, s2, REG_ITMP3);
- /* load low-bits before the branch, so we know the distance */
+ emit_label_bnez(cd, BRANCH_LABEL_1, REG_ITMP3);
s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
- M_BNEZ(REG_ITMP3, 4); /* XXX */
- M_NOP;
M_CMPUGT(s1, s2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
+ emit_label(cd, BRANCH_LABEL_1);
break;
#endif
M_CMPLT(s1, s2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
M_CMPGT(s1, s2, REG_ITMP3);
- /* load low-bits before the branch, so we know the distance */
+ emit_label_bnez(cd, BRANCH_LABEL_1, REG_ITMP3);
s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
- M_BNEZ(REG_ITMP3, 4); /* XXX */
- M_NOP;
M_CMPUGT(s1, s2, REG_ITMP3);
emit_beqz(cd, iptr->dst.block, REG_ITMP3);
+ emit_label(cd, BRANCH_LABEL_1);
break;
#endif
M_CMPGT(s1, s2, REG_ITMP3);
emit_bnez(cd, iptr->dst.block, REG_ITMP3);
M_CMPLT(s1, s2, REG_ITMP3);
- /* load low-bits before the branch, so we know the distance */
+ emit_label_bnez(cd, BRANCH_LABEL_1, REG_ITMP3);
s1 = emit_load_s1_low(jd, iptr, REG_ITMP1);
s2 = emit_load_s2_low(jd, iptr, REG_ITMP2);
- M_BNEZ(REG_ITMP3, 4); /* XXX */
- M_NOP;
M_CMPULT(s1, s2, REG_ITMP3);
emit_beqz(cd, iptr->dst.block, REG_ITMP3);
+ emit_label(cd, BRANCH_LABEL_1);
break;
#endif
- case ICMD_IRETURN: /* ..., retvalue ==> ... */
-#if SIZEOF_VOID_P == 8
- case ICMD_LRETURN:
-#endif
-
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_RESULT);
- M_INTMOVE(s1, REG_RESULT);
- goto nowperformreturn;
-
- case ICMD_ARETURN: /* ..., retvalue ==> ... */
-
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_RESULT);
- M_INTMOVE(s1, REG_RESULT);
-
-#ifdef ENABLE_VERIFIER
- if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- uc = iptr->sx.s23.s2.uc;
-
- patcher_add_patch_ref(jd, PATCHER_resolve_class, uc, 0);
- }
-#endif /* ENABLE_VERIFIER */
- goto nowperformreturn;
-
-#if SIZEOF_VOID_P == 4
- case ICMD_LRETURN: /* ..., retvalue ==> ... */
-
- s1 = emit_load_s1(jd, iptr, REG_RESULT_PACKED);
- M_LNGMOVE(s1, REG_RESULT_PACKED);
- goto nowperformreturn;
-#endif
-
- case ICMD_FRETURN: /* ..., retvalue ==> ... */
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_FRESULT);
- M_FLTMOVE(s1, REG_FRESULT);
- goto nowperformreturn;
-
- case ICMD_DRETURN: /* ..., retvalue ==> ... */
-
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_FRESULT);
- M_DBLMOVE(s1, REG_FRESULT);
- goto nowperformreturn;
-
- case ICMD_RETURN: /* ... ==> ... */
-
- REPLACEMENT_POINT_RETURN(cd, iptr);
-
-nowperformreturn:
- {
- s4 i, p;
-
- p = cd->stackframesize;
-
-#if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- emit_verbosecall_exit(jd);
-#endif
-
-#if defined(ENABLE_THREADS)
- if (checksync && code_is_synchronized(code)) {
- disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
- M_ALD(REG_ITMP3, REG_PV, disp);
-
- /* we need to save the proper return value */
-
- switch (iptr->opc) {
- case ICMD_IRETURN:
- case ICMD_ARETURN:
-#if SIZEOF_VOID_P == 8
- case ICMD_LRETURN:
-#endif
- M_ALD(REG_A0, REG_SP, rd->memuse * 8);
- M_JSR(REG_RA, REG_ITMP3);
- M_AST(REG_RESULT, REG_SP, rd->memuse * 8); /* delay slot */
- break;
-#if SIZEOF_VOID_P == 4
- case ICMD_LRETURN:
- M_ALD(REG_A0, REG_SP, rd->memuse * 8);
- M_LST(REG_RESULT_PACKED, REG_SP, rd->memuse * 8);
- M_JSR(REG_RA, REG_ITMP3);
- M_NOP;
- break;
-#endif
- case ICMD_FRETURN:
- case ICMD_DRETURN:
- M_ALD(REG_A0, REG_SP, rd->memuse * 8);
- M_JSR(REG_RA, REG_ITMP3);
- M_DST(REG_FRESULT, REG_SP, rd->memuse * 8); /* delay slot */
- break;
- case ICMD_RETURN:
- M_JSR(REG_RA, REG_ITMP3);
- M_ALD(REG_A0, REG_SP, rd->memuse * 8); /* delay*/
- break;
- }
-
- /* and now restore the proper return value */
-
- switch (iptr->opc) {
- case ICMD_IRETURN:
- case ICMD_ARETURN:
-#if SIZEOF_VOID_P == 8
- case ICMD_LRETURN:
-#endif
- M_ALD(REG_RESULT, REG_SP, rd->memuse * 8);
- break;
-#if SIZEOF_VOID_P == 4
- case ICMD_LRETURN:
- M_LLD(REG_RESULT_PACKED, REG_SP, rd->memuse * 8);
- break;
-#endif
- case ICMD_FRETURN:
- case ICMD_DRETURN:
- M_DLD(REG_FRESULT, REG_SP, rd->memuse * 8);
- break;
- }
- }
-#endif
-
- /* restore return address */
-
- if (!code_is_leafmethod(code)) {
- p--; M_ALD(REG_RA, REG_SP, p * 8);
- }
-
- /* restore saved registers */
-
- for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
- p--; M_ALD(rd->savintregs[i], REG_SP, p * 8);
- }
- for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
- p--; M_DLD(rd->savfltregs[i], REG_SP, p * 8);
- }
-
- /* deallocate stack and return */
-
- if (cd->stackframesize) {
- s4 lo, hi;
-
- disp = cd->stackframesize * 8;
- lo = (short) (disp);
- hi = (short) (((disp) - lo) >> 16);
-
- if (hi == 0) {
- M_RET(REG_RA);
- M_AADD_IMM(REG_SP, lo, REG_SP); /* delay slot */
- } else {
- M_LUI(REG_ITMP3,hi);
- M_AADD_IMM(REG_ITMP3,lo,REG_ITMP3);
- M_RET(REG_RA);
- M_AADD(REG_ITMP3,REG_SP,REG_SP); /* delay slot */
- }
-
- } else {
- M_RET(REG_RA);
- M_NOP;
- }
-
- ALIGNCODENOP;
- }
- break;
-
-
case ICMD_TABLESWITCH: /* ..., index ==> ... */
{
s4 i, l;
ALIGNCODENOP;
break;
+ case ICMD_BUILTIN:
+ bte = iptr->sx.s23.s3.bte;
+ if (bte->stub == NULL) {
+ disp = dseg_add_functionptr(cd, bte->fp);
+ M_ALD(REG_ITMP3, REG_PV, disp); /* built-in-function pointer */
- case ICMD_LOOKUPSWITCH: /* ..., key ==> ... */
- {
- s4 i;
- lookup_target_t *lookup;
-
- lookup = iptr->dst.lookup;
-
- i = iptr->sx.s23.s2.lookupcount;
-
- MCODECHECK((i<<2)+8);
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
+ /* generate the actual call */
- while (--i >= 0) {
- ICONST(REG_ITMP2, lookup->value);
- emit_beq(cd, lookup->target.block, s1, REG_ITMP2);
- ++lookup;
- }
+ /* TWISTI: i actually don't know the reason for using
+ REG_ITMP3 here instead of REG_PV. */
- emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
- ALIGNCODENOP;
- break;
+ M_JSR(REG_RA, REG_ITMP3);
+ M_NOP;
}
+ else {
+ disp = dseg_add_functionptr(cd, bte->stub);
+ M_ALD(REG_PV, REG_PV, disp); /* method pointer in pv */
+ /* generate the actual call */
- case ICMD_BUILTIN: /* ..., arg1 ==> ... */
-
- bte = iptr->sx.s23.s3.bte;
- md = bte->md;
- goto gen_method;
-
- case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ... */
-
- case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
- case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer */
- case ICMD_INVOKEINTERFACE:
+ M_JSR(REG_RA, REG_PV);
+ M_NOP;
+ }
+ break;
- REPLACEMENT_POINT_INVOKE(cd, iptr);
+ case ICMD_INVOKESPECIAL:
+ emit_nullpointer_check(cd, iptr, REG_A0);
+ /* fall through */
+ case ICMD_INVOKESTATIC:
if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- lm = NULL;
um = iptr->sx.s23.s3.um;
- md = um->methodref->parseddesc.md;
+ disp = dseg_add_unique_address(cd, um);
+
+ patcher_add_patch_ref(jd, PATCHER_invokestatic_special, um,
+ disp);
}
else {
lm = iptr->sx.s23.s3.fmiref->p.method;
- um = NULL;
- md = lm->parseddesc;
+ disp = dseg_add_address(cd, lm->stubroutine);
}
-gen_method:
- s3 = md->paramcount;
+ M_ALD(REG_PV, REG_PV, disp); /* method pointer in pv */
- MCODECHECK((s3 << 1) + 64);
+ /* generate the actual call */
- /* copy arguments to registers or stack location */
-
- for (s3 = s3 - 1; s3 >= 0; s3--) {
- var = VAR(iptr->sx.s23.s2.args[s3]);
- d = md->params[s3].regoff;
+ M_JSR(REG_RA, REG_PV);
+ M_NOP;
+ break;
- if (var->flags & PREALLOC)
- continue;
+ case ICMD_INVOKEVIRTUAL:
+ emit_nullpointer_check(cd, iptr, REG_A0);
- if (IS_INT_LNG_TYPE(var->type)) {
-#if SIZEOF_VOID_P == 8
- if (!md->params[s3].inmemory) {
- s1 = emit_load(jd, iptr, var, d);
- M_INTMOVE(s1, d);
- }
- else {
- s1 = emit_load(jd, iptr, var, REG_ITMP1);
- M_LST(s1, REG_SP, d);
- }
-#else
- if (!md->params[s3].inmemory) {
- s1 = emit_load(jd, iptr, var, d);
+ if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
+ um = iptr->sx.s23.s3.um;
+ patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, 0);
- if (IS_2_WORD_TYPE(var->type))
- M_LNGMOVE(s1, d);
- else
- M_INTMOVE(s1, d);
- }
- else {
- if (IS_2_WORD_TYPE(var->type)) {
- s1 = emit_load(jd, iptr, var, REG_ITMP12_PACKED);
- M_LST(s1, REG_SP, d);
- }
- else {
- s1 = emit_load(jd, iptr, var, REG_ITMP1);
- M_IST(s1, REG_SP, d);
- }
- }
-#endif
- }
- else {
- if (!md->params[s3].inmemory) {
- s1 = emit_load(jd, iptr, var, d);
- if (IS_2_WORD_TYPE(var->type))
- M_DBLMOVE(s1, d);
- else
- M_FLTMOVE(s1, d);
- }
- else {
- s1 = emit_load(jd, iptr, var, REG_FTMP1);
- if (IS_2_WORD_TYPE(var->type))
- M_DST(s1, REG_SP, d);
- else
- M_FST(s1, REG_SP, d);
- }
- }
+ s1 = 0;
+ }
+ else {
+ lm = iptr->sx.s23.s3.fmiref->p.method;
+ s1 = OFFSET(vftbl_t, table[0]) +
+ sizeof(methodptr) * lm->vftblindex;
}
- switch (iptr->opc) {
- case ICMD_BUILTIN:
- if (bte->stub == NULL) {
- disp = dseg_add_functionptr(cd, bte->fp);
- M_ALD(REG_ITMP3, REG_PV, disp); /* built-in-function pointer */
-
- /* generate the actual call */
-
- /* TWISTI: i actually don't know the reason for using
- REG_ITMP3 here instead of REG_PV. */
-
- M_JSR(REG_RA, REG_ITMP3);
- M_NOP;
- }
- else {
- disp = dseg_add_functionptr(cd, bte->stub);
- M_ALD(REG_PV, REG_PV, disp); /* method pointer in pv */
-
- /* generate the actual call */
-
- M_JSR(REG_RA, REG_PV);
- M_NOP;
- }
-
- REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_LDA(REG_PV, REG_RA, -disp);
- break;
-
- case ICMD_INVOKESPECIAL:
- emit_nullpointer_check(cd, iptr, REG_A0);
- /* fall through */
-
- case ICMD_INVOKESTATIC:
- if (lm == NULL) {
- disp = dseg_add_unique_address(cd, um);
-
- patcher_add_patch_ref(jd, PATCHER_invokestatic_special, um,
- disp);
- }
- else
- disp = dseg_add_address(cd, lm->stubroutine);
-
- M_ALD(REG_PV, REG_PV, disp); /* method pointer in pv */
-
- /* generate the actual call */
-
- M_JSR(REG_RA, REG_PV);
- M_NOP;
- REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_LDA(REG_PV, REG_RA, -disp);
- break;
-
- case ICMD_INVOKEVIRTUAL:
- emit_nullpointer_check(cd, iptr, REG_A0);
-
- if (lm == NULL) {
- patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, 0);
-
- s1 = 0;
- }
- else
- s1 = OFFSET(vftbl_t, table[0]) +
- sizeof(methodptr) * lm->vftblindex;
-
- /* implicit null-pointer check */
- M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
- M_ALD(REG_PV, REG_METHODPTR, s1);
-
- /* generate the actual call */
-
- M_JSR(REG_RA, REG_PV);
- M_NOP;
- REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_LDA(REG_PV, REG_RA, -disp);
- break;
-
- case ICMD_INVOKEINTERFACE:
- emit_nullpointer_check(cd, iptr, REG_A0);
+ /* implicit null-pointer check */
+ M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
+ M_ALD(REG_PV, REG_METHODPTR, s1);
- if (lm == NULL) {
- patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, 0);
+ /* generate the actual call */
- s1 = 0;
- s2 = 0;
- }
- else {
- s1 = OFFSET(vftbl_t, interfacetable[0]) -
- sizeof(methodptr*) * lm->clazz->index;
+ M_JSR(REG_RA, REG_PV);
+ M_NOP;
+ break;
- s2 = sizeof(methodptr) * (lm - lm->clazz->methods);
- }
+ case ICMD_INVOKEINTERFACE:
+ emit_nullpointer_check(cd, iptr, REG_A0);
- /* implicit null-pointer check */
- M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
- M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
- M_ALD(REG_PV, REG_METHODPTR, s2);
+ if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
+ um = iptr->sx.s23.s3.um;
+ patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, 0);
- /* generate the actual call */
+ s1 = 0;
+ s2 = 0;
+ }
+ else {
+ lm = iptr->sx.s23.s3.fmiref->p.method;
+ s1 = OFFSET(vftbl_t, interfacetable[0]) -
+ sizeof(methodptr*) * lm->clazz->index;
- M_JSR(REG_RA, REG_PV);
- M_NOP;
- REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_LDA(REG_PV, REG_RA, -disp);
- break;
+ s2 = sizeof(methodptr) * (lm - lm->clazz->methods);
}
- /* store return value */
+ /* implicit null-pointer check */
+ M_ALD(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
+ M_ALD(REG_METHODPTR, REG_METHODPTR, s1);
+ M_ALD(REG_PV, REG_METHODPTR, s2);
- d = md->returntype.type;
+ /* generate the actual call */
- if (d != TYPE_VOID) {
- if (IS_INT_LNG_TYPE(d)) {
-#if SIZEOF_VOID_P == 8
- s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
- M_INTMOVE(REG_RESULT, s1);
-#else
- if (IS_2_WORD_TYPE(d)) {
- s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
- M_LNGMOVE(REG_RESULT_PACKED, s1);
- }
- else {
- s1 = codegen_reg_of_dst(jd, iptr, REG_RESULT);
- M_INTMOVE(REG_RESULT, s1);
- }
-#endif
- }
- else {
- s1 = codegen_reg_of_dst(jd, iptr, REG_FRESULT);
- if (IS_2_WORD_TYPE(d))
- M_DMOV(REG_FRESULT, s1);
- else
- M_FMOV(REG_FRESULT, s1);
- }
- emit_store_dst(jd, iptr, s1);
- }
+ M_JSR(REG_RA, REG_PV);
+ M_NOP;
break;
+
case ICMD_CHECKCAST: /* ..., objectref ==> ..., objectref */
if (!(iptr->flags.bits & INS_FLAG_ARRAY)) {
if (super == NULL) {
emit_label_beqz(cd, BRANCH_LABEL_1, s1);
- cr = iptr->sx.s23.s3.c.ref;
+ constant_classref *cr = iptr->sx.s23.s3.c.ref;
disp = dseg_add_unique_s4(cd, 0); /* super->flags */
patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
if (super == NULL) {
- cr = iptr->sx.s23.s3.c.ref;
+ constant_classref *cr = iptr->sx.s23.s3.c.ref;
patcher_add_patch_ref(jd, PATCHER_checkcast_interface,
cr, 0);
if (super == NULL) {
emit_label(cd, BRANCH_LABEL_2);
- cr = iptr->sx.s23.s3.c.ref;
+ constant_classref *cr = iptr->sx.s23.s3.c.ref;
disp = dseg_add_unique_address(cd, NULL);
patcher_add_patch_ref(jd,
emit_label_beqz(cd, BRANCH_LABEL_5, s1);
}
+ // The following code checks whether object s is a subtype of class t.
+ // Represents the following semantic:
+ // if (!fast_subtype_check(s->vftbl, t->vftbl)) throw;
+
M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
M_ALD(REG_ITMP3, REG_PV, disp);
- M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
- /* if (s1 != REG_ITMP1) { */
- /* M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, baseval)); */
- /* M_ILD(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, diffval)); */
- /* #if defined(ENABLE_THREADS) */
- /* codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase); */
- /* #endif */
- /* M_ISUB(REG_ITMP2, REG_ITMP1, REG_ITMP2); */
- /* } else { */
- M_ILD(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, baseval));
- M_ISUB(REG_ITMP2, REG_ITMP3, REG_ITMP2);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_ILD(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, diffval));
+ if (super == NULL || super->vftbl->subtype_depth >= DISPLAY_SIZE) {
+ // Represents the following semantic:
+ // if (*(s->vftbl + t->vftbl->subtype_offset) == t->vftbl) good;
+ // Preconditions:
+ // REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
+ M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_AADD(REG_ITMP1, REG_ITMP2, REG_ITMP1);
+ M_ALD(REG_ITMP1, REG_ITMP1, 0);
+ emit_label_beq(cd, BRANCH_LABEL_6, REG_ITMP1, REG_ITMP3); /* good */
+
+ // Represents the following semantic:
+ // if (t->vftbl->subtype_offset != OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE])) throw;
+ // Preconditions:
+ // REG_ITMP3==t->vftbl;
+ if (super == NULL) {
+ M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_ISUB_IMM(REG_ITMP1, OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]), REG_ITMP1);
+ emit_label_bnez(cd, BRANCH_LABEL_9, REG_ITMP1); /* throw */
+ }
- /* } */
- M_CMPULT(REG_ITMP3, REG_ITMP2, REG_ITMP3);
- emit_classcast_check(cd, iptr, ICMD_IFNE, REG_ITMP3, s1);
+ // Represents the following semantic:
+ // if (s->vftbl->subtype_depth < t->vftbl->subtype_depth) throw;
+ // Preconditions:
+ // REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
+ M_ILD(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, subtype_depth));
+ M_ILD(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
+ M_CMPULT(REG_ITMP1, REG_ITMP3, REG_ITMP1);
+ emit_label_bnez(cd, BRANCH_LABEL_8, REG_ITMP1); /* throw */
+
+ // Represents the following semantic:
+ // if (s->vftbl->subtype_overflow[t->vftbl->subtype_depth - DISPLAY_SIZE] != t->vftbl) throw;
+ // Preconditions:
+ // REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl->subtype_depth;
+ M_ALD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
+ M_ASLL_IMM(REG_ITMP3, POINTERSHIFT, REG_ITMP3);
+ M_AADD(REG_ITMP2, REG_ITMP3, REG_ITMP2);
+ M_ALD(REG_ITMP2, REG_ITMP2, -DISPLAY_SIZE * SIZEOF_VOID_P);
+ M_ALD(REG_ITMP3, REG_PV, disp); /* reload REG_ITMP3, was destroyed */
+ emit_label_beq(cd, BRANCH_LABEL_7, REG_ITMP2, REG_ITMP3); /* good */
+
+ // Throw case
+ emit_label(cd, BRANCH_LABEL_8);
+ if (super == NULL)
+ emit_label(cd, BRANCH_LABEL_9);
+ emit_load_s1(jd, iptr, REG_ITMP1); /* reload s1, might have been destroyed */
+ M_ALD_INTERN(s1, REG_ZERO, TRAP_ClassCastException);
+
+ // Good case
+ emit_label(cd, BRANCH_LABEL_7);
+ emit_label(cd, BRANCH_LABEL_6);
+ emit_load_s1(jd, iptr, REG_ITMP1); /* reload s1, might have been destroyed */
+ }
+ else {
+ // Represents the following semantic:
+ // if (*(s->vftbl + t->vftbl->subtype_offset) != t->vftbl) throw;
+ // Preconditions:
+ // REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
+ M_ALD(REG_ITMP2, REG_ITMP2, super->vftbl->subtype_offset);
+ M_BEQ(REG_ITMP2, REG_ITMP3, 2);
+ M_NOP; /* delay slot */
+ M_ALD_INTERN(s1, REG_ZERO, TRAP_ClassCastException);
+ }
if (super != NULL)
emit_label(cd, BRANCH_LABEL_5);
M_INTMOVE(s1, REG_A0);
if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- cr = iptr->sx.s23.s3.c.ref;
+ constant_classref *cr = iptr->sx.s23.s3.c.ref;
disp = dseg_add_unique_address(cd, NULL);
patcher_add_patch_ref(jd,
if (super == NULL) {
emit_label_beqz(cd, BRANCH_LABEL_1, s1);
- cr = iptr->sx.s23.s3.c.ref;
+ constant_classref *cr = iptr->sx.s23.s3.c.ref;
disp = dseg_add_unique_s4(cd, 0); /* super->flags */
patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_flags,
if ((super == NULL) || (super->flags & ACC_INTERFACE)) {
if (super == NULL) {
- cr = iptr->sx.s23.s3.c.ref;
-
patcher_add_patch_ref(jd, PATCHER_instanceof_interface,
- cr, 0);
+ iptr->sx.s23.s3.c.ref, 0);
}
else {
emit_label_beqz(cd, BRANCH_LABEL_3, s1);
if (super == NULL) {
emit_label(cd, BRANCH_LABEL_2);
- cr = iptr->sx.s23.s3.c.ref;
+ constant_classref *cr = iptr->sx.s23.s3.c.ref;
disp = dseg_add_unique_address(cd, NULL);
patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_vftbl,
emit_label_beqz(cd, BRANCH_LABEL_5, s1);
}
+ // The following code checks whether object s is a subtype of class t.
+ // Represents the following semantic:
+ // fast_subtype_check(s->vftbl, t->vftbl));
+
M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
- M_ALD(REG_ITMP2, REG_PV, disp);
+ M_ALD(REG_ITMP3, REG_PV, disp);
- M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
- M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
- M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
+ if (super == NULL || super->vftbl->subtype_depth >= DISPLAY_SIZE) {
+ // Represents the following semantic:
+ // if (*(s->vftbl + t->vftbl->subtype_offset) == t->vftbl) true;
+ // Preconditions:
+ // REG_ITMP1==s->vftbl; REG_ITMP3==t->vftbl;
+ M_ILD(REG_ITMP2, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_AADD(REG_ITMP2, REG_ITMP1, REG_ITMP2);
+ M_ALD(REG_ITMP2, REG_ITMP2, 0);
+ emit_label_beq(cd, BRANCH_LABEL_6, REG_ITMP2, REG_ITMP3); /* true */
+
+ // Represents the following semantic:
+ // if (t->vftbl->subtype_offset != OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE])) false;
+ // Preconditions:
+ // REG_ITMP3==t->vftbl;
+ if (super == NULL) {
+ M_ILD(REG_ITMP2, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_ISUB_IMM(REG_ITMP2, OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]), REG_ITMP2);
+ emit_label_bnez(cd, BRANCH_LABEL_9, REG_ITMP2); /* false */
+ }
- M_ISUB(REG_ITMP1, REG_ITMP3, REG_ITMP1);
- M_CMPULT(REG_ITMP2, REG_ITMP1, d);
- M_XOR_IMM(d, 1, d);
+ // Represents the following semantic:
+ // if (s->vftbl->subtype_depth < t->vftbl->subtype_depth) false;
+ // Preconditions:
+ // REG_ITMP1==s->vftbl; REG_ITMP3==t->vftbl;
+ M_ILD(REG_ITMP2, REG_ITMP1, OFFSET(vftbl_t, subtype_depth));
+ M_ILD(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
+ M_CMPULT(REG_ITMP2, REG_ITMP3, REG_ITMP2);
+ emit_label_bnez(cd, BRANCH_LABEL_8, REG_ITMP2); /* false */
+
+ // Represents the following semantic:
+ // if (s->vftbl->subtype_overflow[t->vftbl->subtype_depth - DISPLAY_SIZE] != t->vftbl) false;
+ // Preconditions:
+ // REG_ITMP1==s->vftbl; REG_ITMP3==t->vftbl->subtype_depth;
+ M_ALD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, subtype_overflow));
+ M_ASLL_IMM(REG_ITMP3, POINTERSHIFT, REG_ITMP3);
+ M_AADD(REG_ITMP1, REG_ITMP3, REG_ITMP1);
+ M_ALD(REG_ITMP1, REG_ITMP1, -DISPLAY_SIZE * SIZEOF_VOID_P);
+ M_ALD(REG_ITMP3, REG_PV, disp); /* reload REG_ITMP3, was destroyed */
+ emit_label_bne(cd, BRANCH_LABEL_7, REG_ITMP1, REG_ITMP3); /* false */
+
+ // True case
+ emit_label(cd, BRANCH_LABEL_6);
+ M_MOV(1, d);
+ if (d == REG_ITMP2) {
+ M_BR(2); /* branch over M_CLR */
+ M_NOP; /* delay slot */
+ }
+
+ // False (fall-through) case
+ emit_label(cd, BRANCH_LABEL_7);
+ emit_label(cd, BRANCH_LABEL_8);
+ if (super == NULL)
+ emit_label(cd, BRANCH_LABEL_9);
+ if (d == REG_ITMP2)
+ M_CLR(d); /* if d == REG_ITMP2, it was destroyed */
+ }
+ else {
+ // Represents the following semantic:
+ // *(s->vftbl + t->vftbl->subtype_offset) == t->vftbl;
+ // Preconditions:
+ // REG_ITMP1==s->vftbl; REG_ITMP3==t->vftbl;
+ M_ALD(REG_ITMP1, REG_ITMP1, super->vftbl->subtype_offset);
+ M_XOR(REG_ITMP1, REG_ITMP3, d);
+ M_CMPULT_IMM(d, 1, d);
+ }
if (super != NULL)
emit_label(cd, BRANCH_LABEL_5);
/* is patcher function set? */
if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- cr = iptr->sx.s23.s3.c.ref;
+ constant_classref *cr = iptr->sx.s23.s3.c.ref;
disp = dseg_add_unique_address(cd, NULL);
patcher_add_patch_ref(jd, PATCHER_resolve_classref_to_classinfo,
break;
default:
- exceptions_throw_internalerror("Unknown ICMD %d during code generation",
- iptr->opc);
- return false;
+ vm_abort("Unknown ICMD %d during code generation", iptr->opc);
} /* switch */
-
- } /* for instruction */
-
- MCODECHECK(64); /* XXX require smaller number? */
-
- /* At the end of a basic block we may have to append some nops,
- because the patcher stub calling code might be longer than the
- actual instruction. So codepatching does not change the
- following block unintentionally. */
-
- if (cd->mcodeptr < cd->lastmcodeptr) {
- while (cd->mcodeptr < cd->lastmcodeptr)
- M_NOP;
- }
-
- } /* if (bptr -> flags >= BBREACHED) */
- } /* for basic block */
-
- /* generate traps */
-
- emit_patcher_traps(jd);
-
- /* everything's ok */
-
- return true;
}
M_LDA(REG_SP, REG_SP, -cd->stackframesize * 8); /* build up stackframe */
M_AST(REG_RA, REG_SP, (cd->stackframesize - 1) * 8); /* store RA */
-#if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- emit_verbosecall_enter(jd);
-#endif
-
/* save integer and float argument registers */
#if SIZEOF_VOID_P == 8
break;
}
-#if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- emit_verbosecall_exit(jd);
-#endif
-
/* remove native stackframe info */
M_MOV(REG_SP, REG_A0);
projects / cacao.git / blobdiff