/* src/vm/jit/arm/codegen.c - machine code generator for Arm
- Copyright (C) 1996-2005, 2006, 2007, 2008
+ Copyright (C) 1996-2011
CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
#include "vm/jit/arm/arch.h"
#include "vm/jit/arm/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/exceptions.hpp"
#include "vm/jit/abi.h"
#include "vm/jit/asmpart.h"
-#include "vm/jit/codegen-common.h"
+#include "vm/jit/codegen-common.hpp"
#include "vm/jit/dseg.h"
-#include "vm/jit/emit-common.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/methodheader.h"
-#include "vm/jit/parse.h"
-#include "vm/jit/patcher-common.h"
+#include "vm/jit/parse.hpp"
+#include "vm/jit/patcher-common.hpp"
#include "vm/jit/reg.h"
-#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 i, t, len;
- s4 s1, s2, s3, d;
- s4 disp;
- varinfo *var;
- basicblock *bptr;
- instruction *iptr;
-
- s4 spilledregs_num;
- s4 savedregs_num;
- u2 savedregs_bitmask;
- u2 currentline;
-
- methodinfo *lm; /* local methodinfo for ICMD_INVOKE* */
- unresolved_method *um;
- builtintable_entry *bte;
- methoddesc *md;
- fieldinfo *fi;
- unresolved_field *uf;
- int fieldtype;
- int varindex;
-
- /* get required compiler data */
-
- m = jd->m;
- code = jd->code;
- cd = jd->cd;
- rd = jd->rd;
-
- /* prevent compiler warnings */
-
- lm = NULL;
- um = NULL;
- bte = NULL;
-
- fieldtype = -1;
-
- /* space to save used callee saved registers */
-
- savedregs_num = code_is_leafmethod(code) ? 0 : 1; /* space to save the LR */
-
- savedregs_num += (INT_SAV_CNT - rd->savintreguse);
- /*savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);*/
- assert((FLT_SAV_CNT - rd->savfltreguse) == 0);
-
- spilledregs_num = rd->memuse;
-
-#if defined(ENABLE_THREADS) /* space to save argument of monitor_enter */
- if (checksync && code_is_synchronized(code))
- spilledregs_num++;
-#endif
-
- cd->stackframesize = spilledregs_num * 8 + savedregs_num * 4;
-
- /* XXX QUICK FIX: We shouldn't align the stack in Java code, but
- only in native stubs. */
- /* align stack to 8-byte */
-
- cd->stackframesize = (cd->stackframesize + 4) & ~4;
-
- /* SECTION: Method Header */
- /* create method header */
-
- (void) dseg_add_unique_address(cd, code); /* CodeinfoPointer */
- (void) dseg_add_unique_s4(cd, cd->stackframesize); /* 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 */
-
- /* save return address and used callee saved registers */
-
- savedregs_bitmask = 0;
-
- if (!code_is_leafmethod(code))
+ varinfo* var;
+ methoddesc* md;
+ int32_t s1;
+ int32_t t, len;
+ 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;
+
+ int32_t savedregs_num = 0;
+ uint32_t savedregs_bitmask = 0;
+
+ if (!code_is_leafmethod(code)) {
+ savedregs_num++;
savedregs_bitmask = (1<<REG_LR);
+ }
- for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--)
+ for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
+ savedregs_num++;
savedregs_bitmask |= (1<<(rd->savintregs[i]));
+ }
#if !defined(NDEBUG)
for (i = FLT_SAV_CNT - 1; i >= rd->savfltreguse; i--) {
- log_text("!!! CODEGEN: floating-point callee saved registers are not saved to stack (SEVERE! STACK IS MESSED UP!)");
- /* TODO: floating-point */
+ vm_abort("codegen_emit_prolog: Floating-point callee saved registers are not saved to stack");
}
#endif
- if (savedregs_bitmask)
+ /* save return address and used callee saved registers */
+
+ if (savedregs_bitmask != 0)
M_STMFD(savedregs_bitmask, REG_SP);
/* create additional stack frame for spilled variables (if necessary) */
- if ((cd->stackframesize / 4 - savedregs_num) > 0)
- M_SUB_IMM_EXT_MUL4(REG_SP, REG_SP, cd->stackframesize / 4 - savedregs_num);
+ int32_t additional_bytes = (cd->stackframesize * 8 - savedregs_num * 4);
+
+ if (additional_bytes > 0)
+ M_SUB_IMM_EXT_MUL4(REG_SP, REG_SP, additional_bytes / 4);
/* take arguments out of register or stack frame */
else { /* stack arguments */
if (!(var->flags & INMEMORY)) { /* stack arg -> register */
if (IS_2_WORD_TYPE(t))
- M_LLD(var->vv.regoff, REG_SP, cd->stackframesize + s1);
+ M_LLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
else
- M_ILD(var->vv.regoff, REG_SP, cd->stackframesize + s1);
+ M_ILD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
}
else { /* stack arg -> spilled */
/* Reuse Memory Position on Caller Stack */
- var->vv.regoff = cd->stackframesize + s1;
+ var->vv.regoff = cd->stackframesize * 8 + s1;
}
}
#if !defined(ENABLE_SOFTFLOAT)
else {
if (!(var->flags & INMEMORY)) {
if (IS_2_WORD_TYPE(t))
- M_DLD(var->vv.regoff, REG_SP, cd->stackframesize + s1);
+ M_DLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
else
- M_FLD(var->vv.regoff, REG_SP, cd->stackframesize + s1);
+ M_FLD(var->vv.regoff, REG_SP, cd->stackframesize * 8 + s1);
}
else {
/* Reuse Memory Position on Caller Stack */
- var->vv.regoff = cd->stackframesize + s1;
+ var->vv.regoff = cd->stackframesize * 8 + s1;
}
}
}
#endif /* !defined(ENABLE_SOFTFLOAT) */
}
+}
-#if defined(ENABLE_THREADS)
- /* call monitorenter function */
-
- if (checksync && code_is_synchronized(code)) {
- /* stack offset for monitor argument */
- s1 = rd->memuse * 8;
+/**
+ * Generates machine code for the method epilog.
+ */
+void codegen_emit_epilog(jitdata* jd)
+{
+ int i;
-# if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
- M_STMFD(BITMASK_ARGS, REG_SP);
- s1 += 4 * 4;
- }
-# endif
+ // Get required compiler data.
+ codeinfo* code = jd->code;
+ codegendata* cd = jd->cd;
+ registerdata* rd = jd->rd;
- /* get the correct lock object */
+ int32_t savedregs_num = 0;
+ uint32_t savedregs_bitmask = 0;
- if (m->flags & ACC_STATIC) {
- disp = dseg_add_address(cd, &m->clazz->object.header);
- M_DSEG_LOAD(REG_A0, disp);
- }
- else {
- emit_nullpointer_check_force(cd, iptr, REG_A0);
- }
-
- M_STR(REG_A0, REG_SP, s1);
- disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
- M_DSEG_BRANCH(disp);
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
-
-# if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- M_LDMFD(BITMASK_ARGS, REG_SP);
-# endif
+ if (!code_is_leafmethod(code)) {
+ savedregs_num++;
+ savedregs_bitmask = (1<<REG_LR);
}
-#endif
-
-#if !defined(NDEBUG)
- /* call trace function */
-
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- emit_verbosecall_enter(jd);
-#endif
-
- /* end of header generation */
-
- /* create replacement points */
- REPLACEMENT_POINTS_INIT(cd, jd);
-
- /* SECTION: ICMD Code Generation */
- /* for all basic blocks */
-
- for (bptr = jd->basicblocks; bptr != NULL; bptr = bptr->next) {
-
- bptr->mpc = (s4) (cd->mcodeptr - cd->mcodebase);
- /* is this basic block reached? */
-
- if (bptr->flags < BBREACHED)
- continue;
-
- /* branch resolving */
-
- codegen_resolve_branchrefs(cd, bptr);
+ for (i = INT_SAV_CNT - 1; i >= rd->savintreguse; i--) {
+ savedregs_num++;
+ savedregs_bitmask |= (1<<(rd->savintregs[i]));
+ }
- /* handle replacement points */
- REPLACEMENT_POINT_BLOCK_START(cd, bptr);
+ /* deallocate stackframe for spilled variables */
- /* copy interface registers to their destination */
+ int32_t additional_bytes = (cd->stackframesize * 8 - savedregs_num * 4);
- len = bptr->indepth;
+ if (additional_bytes > 0)
+ M_ADD_IMM_EXT_MUL4(REG_SP, REG_SP, additional_bytes / 4);
- MCODECHECK(64+len);
+ /* restore callee saved registers + do return */
-#if defined(ENABLE_LSRA)
- if (opt_lsra) {
- while (len) {
- len--;
- var = VAR(bptr->invars[len]);
- if ((len == bptr->indepth-1) && (bptr->type == BBTYPE_EXH)) {
- if (!(var->flags & INMEMORY))
- d= var->vv.regoff;
- else
- d=REG_ITMP1;
- M_INTMOVE(REG_ITMP1, d);
- emit_store(jd, NULL, var, d);
- }
- }
- } 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)
+ if (savedregs_bitmask) {
+ if (!code_is_leafmethod(code)) {
+ savedregs_bitmask &= ~(1<<REG_LR);
+ savedregs_bitmask |= (1<<REG_PC);
}
-#endif
-
- /* for all instructions */
- len = bptr->icount;
- currentline = 0;
- for (iptr = bptr->iinstr; len > 0; len--, iptr++) {
+ M_LDMFD(savedregs_bitmask, REG_SP);
+ }
- /* add line number */
- if (iptr->line != currentline) {
- linenumbertable_list_entry_add(cd, iptr->line);
- currentline = iptr->line;
- }
+ /* if LR was not on stack, we need to return manually */
- MCODECHECK(64); /* an instruction usually needs < 64 words */
+ if (code_is_leafmethod(code))
+ M_MOV(REG_PC, REG_LR);
+}
- /* the big switch */
- switch (iptr->opc) {
- case ICMD_NOP: /* ... ==> ... */
- case ICMD_POP: /* ..., value ==> ... */
- case ICMD_POP2: /* ..., value, value ==> ... */
- break;
+/**
+ * Generates machine code for one ICMD.
+ */
+void codegen_emit_instruction(jitdata* jd, instruction* iptr)
+{
+ varinfo* var;
+ builtintable_entry* bte;
+ methoddesc* md;
+ 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.
+ codegendata* cd = jd->cd;
+
+ /* the big switch */
+ 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_ACONST: /* ... ==> ..., constant */
d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
emit_store_dst(jd, iptr, d);
break;
- case ICMD_LCONST: /* ... ==> ..., constant */
-
- d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
- LCONST(d, iptr->sx.val.l);
- emit_store_dst(jd, iptr, d);
- break;
-
case ICMD_FCONST: /* ... ==> ..., constant */
#if defined(ENABLE_SOFTFLOAT)
break;
- /* load/store/copy/move operations ************************************/
-
- case ICMD_ILOAD: /* ... ==> ..., content of local variable */
- case ICMD_ALOAD: /* op1 = local variable */
- case ICMD_FLOAD:
- case ICMD_LLOAD:
- case ICMD_DLOAD:
- case ICMD_ISTORE: /* ..., value ==> ... */
- case ICMD_FSTORE:
- case ICMD_LSTORE:
- 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_INT2BYTE: /* ..., value ==> ..., value */
M_DSEG_BRANCH(disp);
/* recompute pv */
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
+ emit_recompute_pv(cd);
/* move result into destination register */
d = codegen_reg_of_dst(jd, iptr, REG_RESULT);
M_DSEG_BRANCH(disp);
/* recompute pv */
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
+ emit_recompute_pv(cd);
/* move result into destination register */
d = codegen_reg_of_dst(jd, iptr, REG_RESULT_PACKED);
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
+#if defined(__VFP_FP__)
+ M_FMSR(s1, d);
+ M_CVTIF(d, d);
+#else
M_CVTIF(s1, d);
+#endif
emit_store_dst(jd, iptr, d);
break;
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
+#if defined(__VFP_FP__)
+ M_FMSR(s1, d);
+ M_CVTID(d, d);
+#else
M_CVTID(s1, d);
+#endif
emit_store_dst(jd, iptr, d);
break;
s1 = emit_load_s1(jd, iptr, REG_FTMP1);
d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
+#if defined(__VFP_FP__)
+ M_CVTFI(s1, REG_FTMP2);
+ M_FMRS(REG_FTMP2, d);
+#else
/* this uses round towards zero, as Java likes it */
M_CVTFI(s1, d);
-#if !defined(__VFP_FP__)
/* this checks for NaN; to return zero as Java likes it */
M_FCMP(s1, 0x8);
M_MOVVS_IMM(0, d);
s1 = emit_load_s1(jd, iptr, REG_FTMP1);
d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
+#if defined(__VFP_FP__)
+ M_CVTDI(s1, REG_FTMP2);
+ M_FMRS(REG_FTMP2, d);
+#else
/* this uses round towards zero, as Java likes it */
M_CVTDI(s1, d);
-#if !defined(__VFP_FP__)
/* this checks for NaN; to return zero as Java likes it */
M_DCMP(s1, 0x8);
M_MOVVS_IMM(0, d);
/* memory operations **************************************************/
- case ICMD_ARRAYLENGTH: /* ..., arrayref ==> ..., length */
-
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- d = codegen_reg_of_dst(jd, iptr, REG_ITMP2);
- /* implicit null-pointer check */
- M_ILD_INTERN(d, s1, OFFSET(java_array_t, size));
- emit_store_dst(jd, iptr, d);
- break;
-
case ICMD_BALOAD: /* ..., arrayref, index ==> ..., value */
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
M_DSEG_BRANCH(disp);
/* recompute pv */
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
+ emit_recompute_pv(cd);
/* check resturn value of builtin */
emit_arraystore_check(cd, iptr);
M_STR_INTERN(s3, REG_ITMP1, OFFSET(java_objectarray_t, data[0]));
break;
- case ICMD_GETSTATIC: /* ... ==> ..., value */
-
- if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- uf = iptr->sx.s23.s3.uf;
- fieldtype = uf->fieldref->parseddesc.fd->type;
- disp = dseg_add_unique_address(cd, NULL);
-
- patcher_add_patch_ref(jd, PATCHER_get_putstatic, uf, disp);
- }
- else {
- fi = iptr->sx.s23.s3.fmiref->p.field;
- fieldtype = fi->type;
- disp = dseg_add_address(cd, fi->value);
-
- if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->clazz)) {
- patcher_add_patch_ref(jd, PATCHER_initialize_class,
- fi->clazz, 0);
- }
- }
-
- M_DSEG_LOAD(REG_ITMP3, disp);
- switch (fieldtype) {
- case TYPE_INT:
-#if defined(ENABLE_SOFTFLOAT)
- case TYPE_FLT:
-#endif
- case TYPE_ADR:
- d = codegen_reg_of_dst(jd, iptr, REG_ITMP1);
- M_ILD_INTERN(d, REG_ITMP3, 0);
- break;
- case TYPE_LNG:
-#if defined(ENABLE_SOFTFLOAT)
- case TYPE_DBL:
-#endif
- d = codegen_reg_of_dst(jd, iptr, REG_ITMP12_PACKED);
- M_LLD_INTERN(d, REG_ITMP3, 0);
- break;
-#if !defined(ENABLE_SOFTFLOAT)
- case TYPE_FLT:
- d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
- M_FLD_INTERN(d, REG_ITMP3, 0);
- break;
- case TYPE_DBL:
- d = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
- M_DLD_INTERN(d, REG_ITMP3, 0);
- break;
-#endif
- default:
- assert(0);
- }
- emit_store_dst(jd, iptr, d);
- break;
-
- case ICMD_PUTSTATIC: /* ..., value ==> ... */
-
- if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- uf = iptr->sx.s23.s3.uf;
- fieldtype = uf->fieldref->parseddesc.fd->type;
- disp = dseg_add_unique_address(cd, NULL);
-
- patcher_add_patch_ref(jd, PATCHER_get_putstatic, uf, disp);
- }
- else {
- fi = iptr->sx.s23.s3.fmiref->p.field;
- fieldtype = fi->type;
- disp = dseg_add_address(cd, fi->value);
-
- if (!CLASS_IS_OR_ALMOST_INITIALIZED(fi->clazz)) {
- patcher_add_patch_ref(jd, PATCHER_initialize_class,
- fi->clazz, 0);
- }
- }
-
- M_DSEG_LOAD(REG_ITMP3, disp);
- switch (fieldtype) {
- case TYPE_INT:
-#if defined(ENABLE_SOFTFLOAT)
- case TYPE_FLT:
-#endif
- case TYPE_ADR:
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- M_IST_INTERN(s1, REG_ITMP3, 0);
- break;
- case TYPE_LNG:
-#if defined(ENABLE_SOFTFLOAT)
- case TYPE_DBL:
-#endif
- s1 = emit_load_s1(jd, iptr, REG_ITMP12_PACKED);
- M_LST_INTERN(s1, REG_ITMP3, 0);
- break;
-#if !defined(ENABLE_SOFTFLOAT)
- case TYPE_FLT:
- s1 = emit_load_s1(jd, iptr, REG_FTMP1);
- M_FST_INTERN(s1, REG_ITMP3, 0);
- break;
- case TYPE_DBL:
- s1 = emit_load_s1(jd, iptr, REG_FTMP1);
- M_DST_INTERN(s1, REG_ITMP3, 0);
- break;
-#endif
- default:
- assert(0);
- }
- break;
-
case ICMD_GETFIELD: /* ..., objectref, value ==> ... */
s1 = emit_load_s1(jd, iptr, REG_ITMP3);
case ICMD_ATHROW: /* ..., objectref ==> ... (, objectref) */
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- M_INTMOVE(s1, REG_ITMP1_XPTR);
- if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- patcher_add_patch_ref(jd, PATCHER_resolve_class,
- iptr->sx.s23.s2.uc, 0);
- }
disp = dseg_add_functionptr(cd, asm_handle_exception);
M_DSEG_LOAD(REG_ITMP3, disp);
M_MOV(REG_ITMP2_XPC, REG_PC);
/* of basic block */
break;
- case ICMD_GOTO: /* ... ==> ... */
- case ICMD_RET:
-
- emit_br(cd, iptr->dst.block);
- break;
-
- case ICMD_JSR: /* ... ==> ... */
-
- emit_br(cd, iptr->sx.s23.s3.jsrtarget.block);
- break;
-
- case ICMD_IFNULL: /* ..., value ==> ... */
- case ICMD_IFNONNULL:
-
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- M_TEQ_IMM(s1, 0);
- emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFNULL, BRANCH_OPT_NONE);
- break;
-
- case ICMD_IFLT: /* ..., value ==> ... */
- case ICMD_IFLE: /* op1 = target JavaVM pc, val.i = constant */
- case ICMD_IFGT:
- case ICMD_IFGE:
- case ICMD_IFEQ:
- case ICMD_IFNE:
-
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- M_COMPARE(s1, iptr->sx.val.i);
- emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IFEQ, BRANCH_OPT_NONE);
- break;
-
case ICMD_IF_LEQ: /* ..., value ==> ... */
s1 = emit_load_s1_high(jd, iptr, REG_ITMP1);
M_ORR_S(s1, s2, REG_ITMP3);
}
else {
- M_COMPARE(s1, (iptr->sx.val.l >> 32));
+ emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
/*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
M_CMP(s1, REG_ITMP3);*/
ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
}
else {
/* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
- M_COMPARE(s1, (iptr->sx.val.l >> 32));
+ emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
/*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
M_CMP(s1, REG_ITMP3);*/
M_EOR(REG_ITMP1, REG_ITMP1, REG_ITMP1);
M_MOVEQ_IMM(1, REG_ITMP1);
/* low compare: x=x-1(ifLO) */
- M_COMPARE(s2, (iptr->sx.val.l & 0xffffffff));
+ emit_icmp_imm(cd, s2, (iptr->sx.val.l & 0xffffffff));
/*ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
M_CMP(s2, REG_ITMP3);*/
M_SUBLO_IMM(REG_ITMP1, REG_ITMP1, 1);
}
else {
/* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
- M_COMPARE(s1, (iptr->sx.val.l >> 32));
+ emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
/*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
M_CMP(s1, REG_ITMP3);*/
M_EOR(REG_ITMP1, REG_ITMP1, REG_ITMP1);
M_MOVEQ_IMM(1, REG_ITMP1);
/* low compare: x=x+1(ifHI) */
- M_COMPARE(s2, (iptr->sx.val.l & 0xffffffff));
+ emit_icmp_imm(cd, s2, (iptr->sx.val.l & 0xffffffff));
/*ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
M_CMP(s2, REG_ITMP3);*/
M_ADDHI_IMM(REG_ITMP1, REG_ITMP1, 1);
}
else {
/* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
- M_COMPARE(s1, (iptr->sx.val.l >> 32));
+ emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
/*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
M_CMP(s1, REG_ITMP3);*/
M_EOR(REG_ITMP1, REG_ITMP1, REG_ITMP1);
M_MOVEQ_IMM(1, REG_ITMP1);
/* low compare: x=x-1(ifLO) */
- M_COMPARE(s2, (iptr->sx.val.l & 0xffffffff));
+ emit_icmp_imm(cd, s2, (iptr->sx.val.l & 0xffffffff));
/*ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
M_CMP(s2, REG_ITMP3);*/
M_SUBLO_IMM(REG_ITMP1, REG_ITMP1, 1);
else {
#endif
/* high compare: x=0(ifLT) ; x=1(ifEQ) ; x=2(ifGT) */
- M_COMPARE(s1, (iptr->sx.val.l >> 32));
+ emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
/*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
M_CMP(s1, REG_ITMP3);*/
M_EOR(REG_ITMP1, REG_ITMP1, REG_ITMP1);
M_MOVEQ_IMM(1, REG_ITMP1);
/* low compare: x=x+1(ifHI) */
- M_COMPARE(s2, (iptr->sx.val.l & 0xffffffff));
+ emit_icmp_imm(cd, s2, (iptr->sx.val.l & 0xffffffff));
/*ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
M_CMP(s2, REG_ITMP3);*/
M_ADDHI_IMM(REG_ITMP1, REG_ITMP1, 1);
M_ORR_S(s1, s2, REG_ITMP3);
}
else {
- M_COMPARE(s1, (iptr->sx.val.l >> 32));
+ emit_icmp_imm(cd, s1, (iptr->sx.val.l >> 32));
/*ICONST(REG_ITMP3, iptr->sx.val.l >> 32);
M_CMP(s1, REG_ITMP3);*/
ICONST(REG_ITMP3, iptr->sx.val.l & 0xffffffff);
emit_bne(cd, iptr->dst.block);
break;
- case ICMD_IF_ICMPEQ: /* ..., value, value ==> ... */
- case ICMD_IF_ICMPNE:
- case ICMD_IF_ICMPLT:
- case ICMD_IF_ICMPLE:
- case ICMD_IF_ICMPGT:
- case ICMD_IF_ICMPGE:
-
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- s2 = emit_load_s2(jd, iptr, REG_ITMP2);
- M_CMP(s1, s2);
- emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ICMPEQ, BRANCH_OPT_NONE);
- break;
-
- case ICMD_IF_ACMPEQ: /* ..., value, value ==> ... */
- case ICMD_IF_ACMPNE:
-
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- s2 = emit_load_s2(jd, iptr, REG_ITMP2);
- M_CMP(s1, s2);
- emit_bcc(cd, iptr->dst.block, iptr->opc - ICMD_IF_ACMPEQ, BRANCH_OPT_NONE);
- break;
-
case ICMD_IF_LCMPEQ: /* ..., value, value ==> ... */
/* op1 = target JavaVM pc */
/* range check (index <= high-low) */
i = i - l + 1;
- M_COMPARE(REG_ITMP1, i-1);
+ emit_icmp_imm(cd, REG_ITMP1, i-1);
emit_bugt(cd, table[0].block);
/* build jump table top down and use address of lowest entry */
M_LDR(REG_PC, REG_ITMP2, -(cd->dseglen));
break;
- case ICMD_LOOKUPSWITCH: /* ..., key ==> ... */
- {
- s4 i;
- lookup_target_t *lookup;
-
- lookup = iptr->dst.lookup;
-
- i = iptr->sx.s23.s2.lookupcount;
-
- /* compare keys */
- MCODECHECK((i<<2)+8);
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
-
- while (--i >= 0) {
- M_COMPARE(s1, lookup->value);
- emit_beq(cd, lookup->target.block);
- lookup++;
- }
-
- /* default branch */
- emit_br(cd, iptr->sx.s23.s3.lookupdefault.block);
+ case ICMD_BUILTIN:
+ bte = iptr->sx.s23.s3.bte;
+ md = bte->md;
+ if (bte->stub == NULL) {
+ disp = dseg_add_functionptr(cd, bte->fp);
+ } else {
+ disp = dseg_add_functionptr(cd, bte->stub);
}
- break;
-
- case ICMD_FRETURN: /* ..., retvalue ==> ... */
-
-#if !defined(ENABLE_SOFTFLOAT)
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_FTMP1);
- M_CAST_F2I(s1, REG_RESULT);
- goto ICMD_RETURN_do;
-#endif
-
- case ICMD_IRETURN: /* ..., retvalue ==> ... */
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_RESULT);
- M_INTMOVE(s1, REG_RESULT);
- goto ICMD_RETURN_do;
+ M_DSEG_LOAD(REG_PV, disp); /* pointer to built-in-function */
- case ICMD_DRETURN: /* ..., retvalue ==> ... */
+ /* generate the actual call */
-#if !defined(ENABLE_SOFTFLOAT)
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_FTMP1);
- M_CAST_D2L(s1, REG_RESULT_PACKED);
- goto ICMD_RETURN_do;
-#endif
+ M_MOV(REG_LR, REG_PC);
+ M_MOV(REG_PC, REG_PV);
- case ICMD_LRETURN: /* ..., retvalue ==> ... */
-
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_RESULT_PACKED);
- M_LNGMOVE(s1, REG_RESULT_PACKED);
- goto ICMD_RETURN_do;
+ break;
- case ICMD_ARETURN: /* ..., retvalue ==> ... */
+ case ICMD_INVOKESPECIAL:
+ emit_nullpointer_check(cd, iptr, REG_A0);
+ /* fall through */
- REPLACEMENT_POINT_RETURN(cd, iptr);
- s1 = emit_load_s1(jd, iptr, REG_RESULT);
- M_INTMOVE(s1, REG_RESULT);
+ case ICMD_INVOKESTATIC:
if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- patcher_add_patch_ref(jd, PATCHER_resolve_class,
- iptr->sx.s23.s2.uc, 0);
- }
- goto ICMD_RETURN_do;
-
- case ICMD_RETURN: /* ... ==> ... */
-
- REPLACEMENT_POINT_RETURN(cd, iptr);
- ICMD_RETURN_do:
-
-#if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- emit_verbosecall_exit(jd);
-#endif
-
-#if defined(ENABLE_THREADS)
- /* call monitorexit function */
-
- if (checksync && code_is_synchronized(code)) {
- /* stack offset for monitor argument */
-
- s1 = rd->memuse * 8;
-
- /* we need to save the proper return value */
-
- switch (iptr->opc) {
- case ICMD_IRETURN:
- case ICMD_ARETURN:
- case ICMD_LRETURN:
- case ICMD_FRETURN: /* XXX TWISTI: is that correct? */
- case ICMD_DRETURN:
- M_STMFD(BITMASK_RESULT, REG_SP);
- s1 += 2 * 4;
- break;
- }
-
- M_LDR(REG_A0, REG_SP, s1);
- disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
- M_DSEG_BRANCH(disp);
+ um = iptr->sx.s23.s3.um;
+ disp = dseg_add_unique_address(cd, NULL);
- /* we no longer need PV here, no more loading */
- /*s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);*/
-
- switch (iptr->opc) {
- case ICMD_IRETURN:
- case ICMD_ARETURN:
- case ICMD_LRETURN:
- case ICMD_FRETURN: /* XXX TWISTI: is that correct? */
- case ICMD_DRETURN:
- M_LDMFD(BITMASK_RESULT, REG_SP);
- break;
- }
+ patcher_add_patch_ref(jd, PATCHER_invokestatic_special,
+ um, disp);
}
-#endif
-
- /* deallocate stackframe for spilled variables */
-
- if ((cd->stackframesize / 4 - savedregs_num) > 0)
- M_ADD_IMM_EXT_MUL4(REG_SP, REG_SP, cd->stackframesize / 4 - savedregs_num);
-
- /* restore callee saved registers + do return */
-
- if (savedregs_bitmask) {
- if (!code_is_leafmethod(code)) {
- savedregs_bitmask &= ~(1<<REG_LR);
- savedregs_bitmask |= (1<<REG_PC);
- }
- M_LDMFD(savedregs_bitmask, REG_SP);
+ else {
+ lm = iptr->sx.s23.s3.fmiref->p.method;
+ disp = dseg_add_address(cd, lm->stubroutine);
}
- /* if LR was not on stack, we need to return manually */
+ M_DSEG_LOAD(REG_PV, disp); /* Pointer to method */
+
+ /* generate the actual call */
- if (code_is_leafmethod(code))
- M_MOV(REG_PC, REG_LR);
+ M_MOV(REG_LR, REG_PC);
+ M_MOV(REG_PC, REG_PV);
break;
- case ICMD_BUILTIN: /* ..., arg1, arg2, arg3 ==> ... */
+ case ICMD_INVOKEVIRTUAL:
+ if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
+ um = iptr->sx.s23.s3.um;
+ int32_t disp = dseg_add_unique_s4(cd, 0);
+ patcher_add_patch_ref(jd, PATCHER_invokevirtual, um, disp);
- bte = iptr->sx.s23.s3.bte;
- md = bte->md;
- goto ICMD_INVOKE_do;
+ // The following instruction MUST NOT change a0 because of the implicit NPE check.
+ M_LDR_INTERN(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
- case ICMD_INVOKESTATIC: /* ..., [arg1, [arg2 ...]] ==> ... */
- case ICMD_INVOKESPECIAL:/* ..., objectref, [arg1, [arg2 ...]] ==> ... */
- case ICMD_INVOKEVIRTUAL:/* op1 = arg count, val.a = method pointer */
- case ICMD_INVOKEINTERFACE:
+ // Sanity check.
+ assert(REG_ITMP1 != REG_METHODPTR);
+ assert(REG_ITMP2 == REG_METHODPTR);
- REPLACEMENT_POINT_INVOKE(cd, iptr);
+ M_DSEG_LOAD(REG_ITMP1, disp);
+ M_ADD(REG_METHODPTR, REG_METHODPTR, REG_ITMP1);
- if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
- lm = NULL;
- um = iptr->sx.s23.s3.um;
- md = um->methodref->parseddesc.md;
+ // This must be a load with displacement,
+ // otherwise the JIT method address patching does
+ // not work anymore (see md_jit_method_patch_address).
+ M_LDR_INTERN(REG_PV, REG_METHODPTR, 0);
}
else {
lm = iptr->sx.s23.s3.fmiref->p.method;
- um = NULL;
- md = lm->parseddesc;
- }
-
- ICMD_INVOKE_do:
- /* copy arguments to registers or stack location */
-
- s3 = md->paramcount;
-
- MCODECHECK((s3 << 1) + 64);
-
- for (s3 = s3 - 1; s3 >= 0; s3--) {
- var = VAR(iptr->sx.s23.s2.args[s3]);
- d = md->params[s3].regoff;
+ s1 = OFFSET(vftbl_t, table[0]) + sizeof(methodptr) * lm->vftblindex;
- if (var->flags & PREALLOC) /* argument was precolored? */
- continue;
-
- /* TODO: document me */
-#if !defined(ENABLE_SOFTFLOAT)
- if (IS_INT_LNG_TYPE(var->type)) {
-#endif /* !defined(ENABLE_SOFTFLOAT) */
- if (!md->params[s3].inmemory) {
- s1 = emit_load(jd, iptr, var, d);
-
- 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);
- }
- }
-#if !defined(ENABLE_SOFTFLOAT)
- }
- else {
- if (!md->params[s3].inmemory) {
- s1 = emit_load(jd, iptr, var, REG_FTMP1);
- if (IS_2_WORD_TYPE(var->type))
- M_CAST_D2L(s1, d);
- else
- M_CAST_F2I(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);
- }
- }
-#endif /* !defined(ENABLE_SOFTFLOAT) */
+ // The following instruction MUST NOT change a0 because of the implicit NPE check.
+ M_LDR_INTERN(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
+ M_LDR(REG_PV, REG_METHODPTR, s1);
}
- switch (iptr->opc) {
- case ICMD_BUILTIN:
-
- if (bte->stub == NULL) {
- disp = dseg_add_functionptr(cd, bte->fp);
- } else {
- disp = dseg_add_functionptr(cd, bte->stub);
- }
-
- M_DSEG_LOAD(REG_PV, disp); /* pointer to built-in-function */
-
- /* generate the actual call */
-
- M_MOV(REG_LR, REG_PC);
- M_MOV(REG_PC, REG_PV);
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
- 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, NULL);
-
- patcher_add_patch_ref(jd, PATCHER_invokestatic_special,
- um, disp);
- }
- else
- disp = dseg_add_address(cd, lm->stubroutine);
-
- M_DSEG_LOAD(REG_PV, disp); /* Pointer to method */
-
- /* generate the actual call */
-
- M_MOV(REG_LR, REG_PC);
- M_MOV(REG_PC, REG_PV);
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
- break;
-
- case ICMD_INVOKEVIRTUAL:
- 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;
+ // Generate the actual call.
+ M_MOV(REG_LR, REG_PC);
+ M_MOV(REG_PC, REG_PV);
+ break;
- /* implicit null-pointer check */
- M_LDR_INTERN(REG_METHODPTR, REG_A0,
- OFFSET(java_object_t, vftbl));
- M_LDR_INTERN(REG_PV, REG_METHODPTR, s1);
+ case ICMD_INVOKEINTERFACE:
+ if (INSTRUCTION_IS_UNRESOLVED(iptr)) {
+ um = iptr->sx.s23.s3.um;
+ int32_t disp = dseg_add_unique_s4(cd, 0);
+ int32_t disp2 = dseg_add_unique_s4(cd, 0);
- /* generate the actual call */
+ // XXX We need two displacements.
+ assert(disp2 == disp - 4);
+ patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, disp);
- M_MOV(REG_LR, REG_PC);
- M_MOV(REG_PC, REG_PV);
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
- break;
+ // The following instruction MUST NOT change a0 because of the implicit NPE check.
+ M_LDR_INTERN(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
- case ICMD_INVOKEINTERFACE:
- if (lm == NULL) {
- patcher_add_patch_ref(jd, PATCHER_invokeinterface, um, 0);
+ // Sanity check.
+ assert(REG_ITMP1 != REG_METHODPTR);
+ assert(REG_ITMP2 == REG_METHODPTR);
+ assert(REG_ITMP3 != REG_METHODPTR);
- s1 = 0;
- s2 = 0;
- }
- else {
- s1 = OFFSET(vftbl_t, interfacetable[0]) -
- sizeof(methodptr*) * lm->clazz->index;
- s2 = sizeof(methodptr) * (lm - lm->clazz->methods);
- }
-
- /* implicit null-pointer check */
- M_LDR_INTERN(REG_METHODPTR, REG_A0,
- OFFSET(java_object_t, vftbl));
- M_LDR_INTERN(REG_METHODPTR, REG_METHODPTR, s1);
- M_LDR_INTERN(REG_PV, REG_METHODPTR, s2);
+ M_DSEG_LOAD(REG_ITMP1, disp);
+ M_LDR_REG(REG_METHODPTR, REG_METHODPTR, REG_ITMP1);
- /* generate the actual call */
+ M_DSEG_LOAD(REG_ITMP3, disp2);
+ M_ADD(REG_METHODPTR, REG_METHODPTR, REG_ITMP3);
- M_MOV(REG_LR, REG_PC);
- M_MOV(REG_PC, REG_PV);
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
- break;
+ // This must be a load with displacement,
+ // otherwise the JIT method address patching does
+ // not work anymore (see md_jit_method_patch_address).
+ M_LDR_INTERN(REG_PV, REG_METHODPTR, 0);
}
+ else {
+ lm = iptr->sx.s23.s3.fmiref->p.method;
+ s1 = OFFSET(vftbl_t, interfacetable[0]) - sizeof(methodptr*) * lm->clazz->index;
+ s2 = sizeof(methodptr) * (lm - lm->clazz->methods);
- /* store size of call code in replacement point */
- REPLACEMENT_POINT_INVOKE_RETURN(cd, iptr);
-
- /* store return value */
-
- d = md->returntype.type;
-
-#if !defined(__SOFTFP__)
- /* TODO: this is only a hack, since we use R0/R1 for float
- return! this depends on gcc; it is independent from
- our ENABLE_SOFTFLOAT define */
- if (iptr->opc == ICMD_BUILTIN && d != TYPE_VOID && IS_FLT_DBL_TYPE(d)) {
-#if 0 && !defined(NDEBUG)
- dolog("BUILTIN that returns float or double (%s.%s)", m->clazz->name->text, m->name->text);
-#endif
- /* we cannot use this macro, since it is not defined
- in ENABLE_SOFTFLOAT M_CAST_FLT_TO_INT_TYPED(d,
- REG_FRESULT, REG_RESULT_TYPED(d)); */
- if (IS_2_WORD_TYPE(d)) {
- DCD(0xed2d8102); /* stfd f0, [sp, #-8]! */
- M_LDRD_UPDATE(REG_RESULT_PACKED, REG_SP, 8);
- } else {
- DCD(0xed2d0101); /* stfs f0, [sp, #-4]!*/
- M_LDR_UPDATE(REG_RESULT, REG_SP, 4);
- }
+ // The following instruction MUST NOT change a0 because of the implicit NPE check.
+ M_LDR_INTERN(REG_METHODPTR, REG_A0, OFFSET(java_object_t, vftbl));
+ M_LDR(REG_METHODPTR, REG_METHODPTR, s1);
+ M_LDR(REG_PV, REG_METHODPTR, s2);
}
-#endif
-
- if (d != TYPE_VOID) {
-#if !defined(ENABLE_SOFTFLOAT)
- if (IS_INT_LNG_TYPE(d)) {
-#endif /* !defined(ENABLE_SOFTFLOAT) */
- 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);
- }
-
-#if !defined(ENABLE_SOFTFLOAT)
- } else {
- s1 = codegen_reg_of_dst(jd, iptr, REG_FTMP1);
- if (IS_2_WORD_TYPE(d))
- M_CAST_L2D(REG_RESULT_PACKED, s1);
- else
- M_CAST_I2F(REG_RESULT, s1);
- }
-#endif /* !defined(ENABLE_SOFTFLOAT) */
- emit_store_dst(jd, iptr, s1);
- }
+ // Generate the actual call.
+ M_MOV(REG_LR, REG_PC);
+ M_MOV(REG_PC, REG_PV);
break;
case ICMD_CHECKCAST: /* ..., objectref ==> ..., objectref */
emit_label_beq(cd, BRANCH_LABEL_5);
}
+ // 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_LDR_INTERN(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
M_DSEG_LOAD(REG_ITMP3, disp);
- M_LDR_INTERN(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
- M_LDR_INTERN(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, baseval));
- M_SUB(REG_ITMP2, REG_ITMP2, REG_ITMP3);
- M_DSEG_LOAD(REG_ITMP3, disp);
- M_LDR_INTERN(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_LDR_INTERN(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_LDR_REG(REG_ITMP1, REG_ITMP2, REG_ITMP1);
+ M_CMP(REG_ITMP1, REG_ITMP3);
+ emit_load_s1(jd, iptr, REG_ITMP1); /* reload s1, might have been destroyed */
+ emit_label_beq(cd, BRANCH_LABEL_6); /* 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_LDR_INTERN(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_CMP_IMM(REG_ITMP1, OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]));
+ emit_load_s1(jd, iptr, REG_ITMP1); /* reload s1, might have been destroyed */
+ emit_classcast_check(cd, iptr, BRANCH_NE, 0, s1); /* throw */
+ }
- M_CMP(REG_ITMP2, REG_ITMP3);
- emit_classcast_check(cd, iptr, BRANCH_UGT, 0, 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_LDR_INTERN(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, subtype_depth));
+ M_LDR_INTERN(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
+ M_CMP(REG_ITMP1, REG_ITMP3);
+ emit_load_s1(jd, iptr, REG_ITMP1); /* reload s1, might have been destroyed */
+ emit_classcast_check(cd, iptr, BRANCH_LT, 0, s1); /* 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_LDR_INTERN(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
+ M_ADD(REG_ITMP2, REG_ITMP2, REG_LSL(REG_ITMP3, 2)); /* REG_ITMP2 = REG_ITMP2 + 4 * REG_ITMP3 */
+ M_LDR_INTERN(REG_ITMP2, REG_ITMP2, -DISPLAY_SIZE * SIZEOF_VOID_P);
+ M_DSEG_LOAD(REG_ITMP3, disp); /* reload REG_ITMP3, was destroyed */
+ M_CMP(REG_ITMP2, REG_ITMP3);
+ emit_classcast_check(cd, iptr, BRANCH_NE, 0, s1); /* throw */
+
+ emit_label(cd, BRANCH_LABEL_6);
+ }
+ 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_CMP(REG_ITMP2, REG_ITMP3);
+ emit_classcast_check(cd, iptr, BRANCH_NE, 0, s1);
+ }
if (super != NULL)
emit_label(cd, BRANCH_LABEL_5);
disp = dseg_add_functionptr(cd, BUILTIN_arraycheckcast);
M_DSEG_BRANCH(disp);
- /* recompute pv */
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(disp);
+ emit_recompute_pv(cd);
s1 = emit_load_s1(jd, iptr, REG_ITMP1);
M_TST(REG_RESULT, REG_RESULT);
emit_label_beq(cd, BRANCH_LABEL_5);
}
- M_LDR_INTERN(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
- M_DSEG_LOAD(REG_ITMP2, disp);
+ // 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_LDR_INTERN(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
- M_LDR_INTERN(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, baseval));
- M_LDR_INTERN(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, diffval));
+ M_LDR_INTERN(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
+ M_DSEG_LOAD(REG_ITMP3, disp);
- M_SUB(REG_ITMP1, REG_ITMP1, REG_ITMP3);
- M_CMP(REG_ITMP1, REG_ITMP2);
- /* If d == REG_ITMP2, then it's destroyed */
- if (d == REG_ITMP2)
- M_EOR(d, d, d);
- M_MOVLS_IMM(1, d);
+ 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_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
+ M_LDR_INTERN(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_LDR_REG(REG_ITMP1, REG_ITMP2, REG_ITMP1);
+ M_CMP(REG_ITMP1, REG_ITMP3);
+ emit_label_beq(cd, BRANCH_LABEL_6); /* 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_LDR_INTERN(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+ M_CMP_IMM(REG_ITMP1, OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]));
+ emit_label_bne(cd, BRANCH_LABEL_7); /* false */
+ }
+
+ // Represents the following semantic:
+ // if (s->vftbl->subtype_depth < t->vftbl->subtype_depth) false;
+ // Preconditions:
+ // REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
+ M_LDR_INTERN(REG_ITMP1, REG_ITMP2, OFFSET(vftbl_t, subtype_depth));
+ M_LDR_INTERN(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
+ M_CMP(REG_ITMP1, REG_ITMP3);
+ emit_label_blt(cd, BRANCH_LABEL_8); /* false */
+
+ // Represents the following semantic:
+ // if (s->vftbl->subtype_overflow[t->vftbl->subtype_depth - DISPLAY_SIZE] != t->vftbl) false;
+ // Preconditions:
+ // REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl->subtype_depth;
+ M_LDR_INTERN(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
+ M_ADD(REG_ITMP2, REG_ITMP2, REG_LSL(REG_ITMP3, 2)); /* REG_ITMP2 = REG_ITMP2 + 4 * REG_ITMP3 */
+ M_LDR_INTERN(REG_ITMP2, REG_ITMP2, -DISPLAY_SIZE * SIZEOF_VOID_P);
+ M_DSEG_LOAD(REG_ITMP3, disp); /* reload REG_ITMP3, was destroyed */
+ M_CMP(REG_ITMP2, REG_ITMP3);
+
+ emit_label(cd, BRANCH_LABEL_6);
+ if (super == NULL)
+ emit_label(cd, BRANCH_LABEL_7);
+ emit_label(cd, BRANCH_LABEL_8);
+
+ /* If d == REG_ITMP2, then it's destroyed */
+ if (d == REG_ITMP2)
+ M_EOR(d, d, d);
+ M_MOVEQ_IMM(1, d);
+ }
+ else {
+ // Represents the following semantic:
+ // *(s->vftbl + t->vftbl->subtype_offset) == t->vftbl;
+ // Preconditions:
+ // REG_ITMP2==s->vftbl; REG_ITMP3==t->vftbl;
+ M_ALD(REG_ITMP2, REG_ITMP2, super->vftbl->subtype_offset);
+ M_CMP(REG_ITMP2, REG_ITMP3);
+ /* If d == REG_ITMP2, then it's destroyed */
+ if (d == REG_ITMP2)
+ M_EOR(d, d, d);
+ M_MOVEQ_IMM(1, d);
+ }
if (super != NULL)
emit_label(cd, BRANCH_LABEL_5);
/* recompute pv */
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
+ emit_recompute_pv(cd);
/* check for exception before result assignment */
emit_store_dst(jd, iptr, d);
break;
- case ICMD_CHECKNULL: /* ..., objectref ==> ..., objectref */
-
- s1 = emit_load_s1(jd, iptr, REG_ITMP1);
- emit_nullpointer_check(cd, iptr, s1);
- break;
-
default:
- exceptions_throw_internalerror("Unknown ICMD %d during code generation",
- iptr->opc);
- return false;
- } /* the big switch */
-
- } /* for all instructions */
-
- } /* for all basic blocks */
-
- /* generate traps */
-
- emit_patcher_traps(jd);
-
- /* everything's ok */
-
- return true;
-}
-
-
-/* codegen_emit_stub_compiler **************************************************
-
- Emits a stub routine which calls the compiler.
-
-*******************************************************************************/
-
-void codegen_emit_stub_compiler(jitdata *jd)
-{
- methodinfo *m;
- codegendata *cd;
-
- /* get required compiler data */
-
- m = jd->m;
- cd = jd->cd;
-
- /* code for the stub */
-
- M_LDR_INTERN(REG_ITMP1, REG_PC, -(2 * 4 + 2 * SIZEOF_VOID_P));
- M_LDR_INTERN(REG_PC, REG_PC, -(3 * 4 + 3 * SIZEOF_VOID_P));
+ vm_abort("Unknown ICMD %d during code generation", iptr->opc);
+ } /* the big switch */
}
/* calculate stackframe size */
cd->stackframesize =
- 4 + /* return address */
- sizeof(stackframeinfo_t) + /* stackframeinfo */
- sizeof(localref_table) + /* localref_table */
- nmd->memuse * 4; /* stack arguments */
+ 1 + /* return address */
+ sizeof(stackframeinfo_t) / SIZEOF_VOID_P + /* stackframeinfo */
+ sizeof(localref_table) / SIZEOF_VOID_P + /* localref_table */
+ nmd->memuse; /* stack arguments */
/* align stack to 8-byte */
- cd->stackframesize = (cd->stackframesize + 4) & ~4;
+ cd->stackframesize = (cd->stackframesize + 1) & ~1;
/* create method header */
/* generate stub code */
M_STMFD(1<<REG_LR, REG_SP);
- M_SUB_IMM_EXT_MUL4(REG_SP, REG_SP, cd->stackframesize / 4 - 1);
-
-#if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- emit_verbosecall_enter(jd);
-#endif
+ M_SUB_IMM_EXT_MUL4(REG_SP, REG_SP, cd->stackframesize * 2 - 1);
#if defined(ENABLE_GC_CACAO)
/* Save callee saved integer registers in stackframeinfo (GC may
/* recompute pv */
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
+ emit_recompute_pv(cd);
/* remember class argument */
}
}
else {
- s1 = md->params[i].regoff + cd->stackframesize;
+ s1 = md->params[i].regoff + cd->stackframesize * 8;
s2 = nmd->params[j].regoff;
if (IS_2_WORD_TYPE(t)) {
/* TODO: this is only needed because of the tracer ... do we
really need it? */
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
-
-#if !defined(__SOFTFP__)
- /* TODO: this is only a hack, since we use R0/R1 for float return! */
- /* this depends on gcc; it is independent from our ENABLE_SOFTFLOAT define */
- if (md->returntype.type != TYPE_VOID && IS_FLT_DBL_TYPE(md->returntype.type)) {
-#if 0 && !defined(NDEBUG)
- dolog("NATIVESTUB that returns float or double (%s.%s)", m->clazz->name->text, m->name->text);
-#endif
- /* we cannot use this macro, since it is not defined in ENABLE_SOFTFLOAT */
- /* M_CAST_FLT_TO_INT_TYPED(md->returntype.type, REG_FRESULT, REG_RESULT_TYPED(md->returntype.type)); */
- if (IS_2_WORD_TYPE(md->returntype.type)) {
- DCD(0xed2d8102); /* stfd f0, [sp, #-8]! */
- M_LDRD_UPDATE(REG_RESULT_PACKED, REG_SP, 8);
- } else {
- DCD(0xed2d0101); /* stfs f0, [sp, #-4]!*/
- M_LDR_UPDATE(REG_RESULT, REG_SP, 4);
- }
- }
-#endif
-
-#if !defined(NDEBUG)
- if (JITDATA_HAS_FLAG_VERBOSECALL(jd))
- emit_verbosecall_exit(jd);
-#endif
+ emit_recompute_pv(cd);
/* remove native stackframe info */
/* TODO: improve this store/load */
M_MOV(REG_A1, REG_PV);
disp = dseg_add_functionptr(cd, codegen_finish_native_call);
M_DSEG_BRANCH(disp);
- s1 = (s4) (cd->mcodeptr - cd->mcodebase);
- M_RECOMPUTE_PV(s1);
+ emit_recompute_pv(cd);
M_MOV(REG_ITMP1_XPTR, REG_RESULT);
M_LDMFD(BITMASK_RESULT, REG_SP);
/* finish stub code, but do not yet return to caller */
- M_ADD_IMM_EXT_MUL4(REG_SP, REG_SP, cd->stackframesize / 4 - 1);
+ M_ADD_IMM_EXT_MUL4(REG_SP, REG_SP, cd->stackframesize * 2 - 1);
M_LDMFD(1<<REG_LR, REG_SP);
/* check for exception */
projects / cacao.git / blobdiff