/* src/vm/jit/powerpc/emit.c - PowerPC code emitter functions
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
- C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
- E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
- J. Wenninger, Institut f. Computersprachen - TU Wien
+ Copyright (C) 1996-2005, 2006, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Christian Thalinger
-
- $Id: emit.c 4398 2006-01-31 23:43:08Z twisti $
-
*/
#include "config.h"
#include <assert.h>
+#include <stdint.h>
#include "vm/types.h"
#include "vm/jit/powerpc/codegen.h"
-#include "mm/memory.h"
-#include "vm/builtin.h"
-#include "vm/exceptions.h"
+#include "mm/memory.hpp"
+
+#include "threads/lock.hpp"
+
#include "vm/options.h"
+
+#include "vm/jit/abi.h"
#include "vm/jit/asmpart.h"
+#include "vm/jit/codegen-common.hpp"
#include "vm/jit/dseg.h"
-#include "vm/jit/emit-common.h"
-#include "vm/jit/jit.h"
-#include "vm/jit/replace.h"
+#include "vm/jit/emit-common.hpp"
+#include "vm/jit/jit.hpp"
+#include "vm/jit/replace.hpp"
+#include "vm/jit/trace.hpp"
+#include "vm/jit/trap.hpp"
/* emit_load *******************************************************************
if (IS_INMEMORY(src->flags)) {
COUNT_SPILLS;
- disp = src->vv.regoff * 4;
-
- if (IS_FLT_DBL_TYPE(src->type)) {
- if (IS_2_WORD_TYPE(src->type))
- M_DLD(tempreg, REG_SP, disp);
- else
- M_FLD(tempreg, REG_SP, disp);
- }
- else {
- if (IS_2_WORD_TYPE(src->type))
- M_LLD(tempreg, REG_SP, disp);
- else
- M_ILD(tempreg, REG_SP, disp);
+ disp = src->vv.regoff;
+
+ switch (src->type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_ILD(tempreg, REG_SP, disp);
+ break;
+ case TYPE_LNG:
+ M_LLD(tempreg, REG_SP, disp);
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
+ M_DLD(tempreg, REG_SP, disp);
+ break;
+ default:
+ vm_abort("emit_load: unknown type %d", src->type);
}
reg = tempreg;
if (IS_INMEMORY(src->flags)) {
COUNT_SPILLS;
- disp = src->vv.regoff * 4;
+ disp = src->vv.regoff;
M_ILD(tempreg, REG_SP, disp + 4);
if (IS_INMEMORY(src->flags)) {
COUNT_SPILLS;
- disp = src->vv.regoff * 4;
+ disp = src->vv.regoff;
M_ILD(tempreg, REG_SP, disp);
/* emit_store ******************************************************************
- XXX
+ Emit a possible store for the given variable.
*******************************************************************************/
void emit_store(jitdata *jd, instruction *iptr, varinfo *dst, s4 d)
{
codegendata *cd;
+ s4 disp;
/* get required compiler data */
if (IS_INMEMORY(dst->flags)) {
COUNT_SPILLS;
- if (IS_FLT_DBL_TYPE(dst->type)) {
- if (IS_2_WORD_TYPE(dst->type))
- M_DST(d, REG_SP, dst->vv.regoff * 4);
- else
- M_FST(d, REG_SP, dst->vv.regoff * 4);
- }
- else {
- if (IS_2_WORD_TYPE(dst->type))
- M_LST(d, REG_SP, dst->vv.regoff * 4);
- else
- M_IST(d, REG_SP, dst->vv.regoff * 4);
+ disp = dst->vv.regoff;
+
+ switch (dst->type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_IST(d, REG_SP, disp);
+ break;
+ case TYPE_LNG:
+ M_LST(d, REG_SP, disp);
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
+ M_DST(d, REG_SP, disp);
+ break;
+ default:
+ vm_abort("emit_store: unknown type %d", dst->type);
}
}
}
*******************************************************************************/
-void emit_copy(jitdata *jd, instruction *iptr, varinfo *src, varinfo *dst)
+void emit_copy(jitdata *jd, instruction *iptr)
{
- codegendata *cd;
- s4 s1, d;
+ codegendata *cd;
+ varinfo *src;
+ varinfo *dst;
+ s4 s1, d;
/* get required compiler data */
cd = jd->cd;
+ /* get source and destination variables */
+
+ src = VAROP(iptr->s1);
+ dst = VAROP(iptr->dst);
+
if ((src->vv.regoff != dst->vv.regoff) ||
(IS_INMEMORY(src->flags ^ dst->flags))) {
+ if ((src->type == TYPE_RET) || (dst->type == TYPE_RET)) {
+ /* emit nothing, as the value won't be used anyway */
+ return;
+ }
+
/* If one of the variables resides in memory, we can eliminate
the register move from/to the temporary register with the
order of getting the destination register and the load. */
}
if (s1 != d) {
- if (IS_FLT_DBL_TYPE(src->type))
+ switch (src->type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_MOV(s1, d);
+ break;
+ case TYPE_LNG:
+ M_MOV(GET_LOW_REG(s1), GET_LOW_REG(d));
+ M_MOV(GET_HIGH_REG(s1), GET_HIGH_REG(d));
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
M_FMOV(s1, d);
- else {
- if (IS_2_WORD_TYPE(src->type)) {
- M_MOV(GET_LOW_REG(s1), GET_LOW_REG(d));
- M_MOV(GET_HIGH_REG(s1), GET_HIGH_REG(d));
- }
- else
- M_MOV(s1, d);
+ break;
+ default:
+ vm_abort("emit_copy: unknown type %d", src->type);
}
}
}
-/* emit_nullpointer_check ******************************************************
+/* emit_branch *****************************************************************
- Emit a NullPointerException check.
+ Emits the code for conditional and unconditional branchs.
*******************************************************************************/
-void emit_nullpointer_check(codegendata *cd, s4 reg)
+void emit_branch(codegendata *cd, s4 disp, s4 condition, s4 reg, u4 opt)
{
- if (checknull) {
- M_TST(reg);
- M_BEQ(0);
- codegen_add_nullpointerexception_ref(cd);
- }
-}
+ s4 checkdisp;
+ s4 branchdisp;
+ /* calculate the different displacements */
-/* emit_arrayindexoutofbounds_check ********************************************
+ checkdisp = disp + 4;
+ branchdisp = (disp - 4) >> 2;
- Emit a ArrayIndexOutOfBoundsException check.
+ /* check which branch to generate */
-*******************************************************************************/
+ if (condition == BRANCH_UNCONDITIONAL) {
+ /* check displacement for overflow */
-void emit_arrayindexoutofbounds_check(codegendata *cd, s4 s1, s4 s2)
-{
-#if 0
- if (checkbounds) {
- M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));
- M_CMPU(s2, REG_ITMP3);
- M_BGE(0);
- codegen_add_arrayindexoutofboundsexception_ref(cd, s2);
- }
-#else
- M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));
- M_CMPU(s2, REG_ITMP3);
- M_BLT(1);
- M_ALD_INTERN(s2, REG_ZERO, EXCEPTION_LOAD_DISP_ARRAYINDEXOUTOFBOUNDS);
-#endif
-}
+ if ((checkdisp < (s4) 0xfe000000) || (checkdisp > (s4) 0x01fffffc)) {
+ /* if the long-branches flag isn't set yet, do it */
-
-/* emit_exception_stubs ********************************************************
-
- Generates the code for the exception stubs.
-
-*******************************************************************************/
-
-void emit_exception_stubs(jitdata *jd)
-{
- codegendata *cd;
- registerdata *rd;
- exceptionref *er;
- s4 branchmpc;
- s4 targetmpc;
- s4 targetdisp;
- s4 disp;
-
- /* get required compiler data */
-
- cd = jd->cd;
- rd = jd->rd;
-
- /* generate exception stubs */
-
- targetdisp = 0;
-
- for (er = cd->exceptionrefs; er != NULL; er = er->next) {
- /* back-patch the branch to this exception code */
-
- branchmpc = er->branchpos;
- targetmpc = cd->mcodeptr - cd->mcodebase;
-
- md_codegen_patch_branch(cd, branchmpc, targetmpc);
-
- MCODECHECK(100);
-
- /* Move the value register to a temporary register, if
- there is the need for it. */
-
- if (er->reg != -1)
- M_MOV(er->reg, REG_ITMP1);
-
- /* calcuate exception address */
-
- M_LDA(REG_ITMP2_XPC, REG_PV, er->branchpos - 4);
-
- /* move function to call into REG_ITMP3 */
-
- disp = dseg_add_functionptr(cd, er->function);
- M_ALD(REG_ITMP3, REG_PV, disp);
-
- if (targetdisp == 0) {
- targetdisp = ((u4 *) cd->mcodeptr) - ((u4 *) cd->mcodebase);
-
- if (jd->isleafmethod) {
- M_MFLR(REG_ZERO);
- M_AST(REG_ZERO, REG_SP, cd->stackframesize * 4 + LA_LR_OFFSET);
+ if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
+ cd->flags |= (CODEGENDATA_FLAG_ERROR |
+ CODEGENDATA_FLAG_LONGBRANCHES);
}
- M_MOV(REG_PV, rd->argintregs[0]);
- M_MOV(REG_SP, rd->argintregs[1]);
-
- if (jd->isleafmethod)
- M_MOV(REG_ZERO, rd->argintregs[2]);
- else
- M_ALD(rd->argintregs[2],
- REG_SP, cd->stackframesize * 4 + LA_LR_OFFSET);
-
- M_MOV(REG_ITMP2_XPC, rd->argintregs[3]);
- M_MOV(REG_ITMP1, rd->argintregs[4]);
-
- M_STWU(REG_SP, REG_SP, -(LA_SIZE + 6 * 4));
- M_AST(REG_ITMP2_XPC, REG_SP, LA_SIZE + 5 * 4);
+ vm_abort("emit_branch: emit unconditional long-branch code");
+ }
+ else {
+ M_BR(branchdisp);
+ }
+ }
+ else {
+ /* and displacement for overflow */
- M_MTCTR(REG_ITMP3);
- M_JSR;
- M_MOV(REG_RESULT, REG_ITMP1_XPTR);
+ if ((checkdisp < (s4) 0xffff8000) || (checkdisp > (s4) 0x00007fff)) {
+ /* if the long-branches flag isn't set yet, do it */
- M_ALD(REG_ITMP2_XPC, REG_SP, LA_SIZE + 5 * 4);
- M_IADD_IMM(REG_SP, LA_SIZE + 6 * 4, REG_SP);
+ if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
+ cd->flags |= (CODEGENDATA_FLAG_ERROR |
+ CODEGENDATA_FLAG_LONGBRANCHES);
+ }
- if (jd->isleafmethod) {
- /* XXX FIXME: REG_ZERO can cause problems here! */
- assert(cd->stackframesize * 4 <= 32767);
+ // Subtract 1 instruction from the displacement as the
+ // actual branch is the second instruction.
+ checkdisp = checkdisp - 4;
+ branchdisp = branchdisp - 1;
- M_ALD(REG_ZERO, REG_SP, cd->stackframesize * 4 + LA_LR_OFFSET);
- M_MTLR(REG_ZERO);
+ if ((checkdisp < (int32_t) 0xfe000000) || (checkdisp > (int32_t) 0x01fffffc)) {
+ vm_abort("emit_branch: emit conditional long-branch code");
+ }
+ else {
+ switch (condition) {
+ case BRANCH_EQ:
+ M_BNE(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_NE:
+ M_BEQ(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_LT:
+ M_BGE(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_GE:
+ M_BLT(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_GT:
+ M_BLE(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_LE:
+ M_BGT(1);
+ M_BR(branchdisp);
+ break;
+ case BRANCH_NAN:
+ vm_abort("emit_branch: long BRANCH_NAN");
+ break;
+ default:
+ vm_abort("emit_branch: unknown condition %d", condition);
+ }
}
-
- disp = dseg_add_functionptr(cd, asm_handle_exception);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_MTCTR(REG_ITMP3);
- M_RTS;
}
else {
- disp = (((u4 *) cd->mcodebase) + targetdisp) -
- (((u4 *) cd->mcodeptr) + 1);
- M_BR(disp);
+ switch (condition) {
+ case BRANCH_EQ:
+ M_BEQ(branchdisp);
+ break;
+ case BRANCH_NE:
+ M_BNE(branchdisp);
+ break;
+ case BRANCH_LT:
+ M_BLT(branchdisp);
+ break;
+ case BRANCH_GE:
+ M_BGE(branchdisp);
+ break;
+ case BRANCH_GT:
+ M_BGT(branchdisp);
+ break;
+ case BRANCH_LE:
+ M_BLE(branchdisp);
+ break;
+ case BRANCH_NAN:
+ M_BNAN(branchdisp);
+ break;
+ default:
+ vm_abort("emit_branch: unknown condition %d", condition);
+ }
}
}
}
-/* emit_patcher_stubs **********************************************************
+/* emit_arithmetic_check *******************************************************
- Generates the code for the patcher stubs.
+ Emit an ArithmeticException check.
*******************************************************************************/
-void emit_patcher_stubs(jitdata *jd)
+void emit_arithmetic_check(codegendata *cd, instruction *iptr, s4 reg)
{
- 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_BR(disp);
-
- cd->mcodeptr = savedmcodeptr; /* restore the current mcodeptr */
-
- /* create stack frame - keep stack 16-byte aligned */
-
- M_AADD_IMM(REG_SP, -8 * 4, REG_SP);
-
- /* calculate return address and move it onto the stack */
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_TST(reg);
+ M_BNE(1);
+ M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_ArithmeticException);
+ }
+}
- M_LDA(REG_ITMP3, REG_PV, pref->branchpos);
- M_AST_INTERN(REG_ITMP3, REG_SP, 5 * 4);
- /* move pointer to java_objectheader onto stack */
+/* emit_arrayindexoutofbounds_check ********************************************
-#if defined(ENABLE_THREADS)
- /* order reversed because of data segment layout */
+ Emit a ArrayIndexOutOfBoundsException check.
- (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_INTERN(REG_ITMP3, REG_SP, 4 * 4);
-#else
- /* do nothing */
-#endif
+void emit_arrayindexoutofbounds_check(codegendata *cd, instruction *iptr, s4 s1, s4 s2)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_ILD(REG_ITMP3, s1, OFFSET(java_array_t, size));
+ M_TRAPGEU(s2, REG_ITMP3);
+ }
+}
- /* move machine code onto stack */
- disp = dseg_add_s4(cd, mcode);
- M_ILD(REG_ITMP3, REG_PV, disp);
- M_IST_INTERN(REG_ITMP3, REG_SP, 3 * 4);
+/* emit_arraystore_check *******************************************************
- /* move class/method/field reference onto stack */
+ Emit an ArrayStoreException check.
- disp = dseg_add_address(cd, pref->ref);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST_INTERN(REG_ITMP3, REG_SP, 2 * 4);
+*******************************************************************************/
- /* move data segment displacement onto stack */
+void emit_arraystore_check(codegendata *cd, instruction *iptr)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_TST(REG_RESULT);
+ M_BNE(1);
+ M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_ArrayStoreException);
+ }
+}
- disp = dseg_add_s4(cd, pref->disp);
- M_ILD(REG_ITMP3, REG_PV, disp);
- M_IST_INTERN(REG_ITMP3, REG_SP, 1 * 4);
- /* move patcher function pointer onto stack */
+/* emit_classcast_check ********************************************************
- disp = dseg_add_functionptr(cd, pref->patcher);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST_INTERN(REG_ITMP3, REG_SP, 0 * 4);
+ Emit a ClassCastException check.
- 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_MTCTR(REG_ITMP3);
- M_RTS;
- }
- else {
- disp = (((u4 *) cd->mcodebase) + targetdisp) -
- (((u4 *) cd->mcodeptr) + 1);
- M_BR(disp);
+void emit_classcast_check(codegendata *cd, instruction *iptr, s4 condition, s4 reg, s4 s1)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ switch (condition) {
+ case BRANCH_LE:
+ M_BGT(1);
+ break;
+ case BRANCH_EQ:
+ M_BNE(1);
+ break;
+ case BRANCH_GT:
+ M_BLE(1);
+ break;
+ default:
+ vm_abort("emit_classcast_check: unknown condition %d", condition);
}
+ M_ALD_INTERN(s1, REG_ZERO, TRAP_ClassCastException);
}
}
-/* emit_replacement_stubs ******************************************************
+/* emit_nullpointer_check ******************************************************
- Generates the code for the replacement stubs.
+ Emit a NullPointerException check.
*******************************************************************************/
-void emit_replacement_stubs(jitdata *jd)
+void emit_nullpointer_check(codegendata *cd, instruction *iptr, s4 reg)
{
- codegendata *cd;
- codeinfo *code;
- rplpoint *rplp;
- u1 *savedmcodeptr;
- s4 disp;
- s4 i;
- u1 *outcode;
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_TST(reg);
+ M_BNE(1);
+ M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_NullPointerException);
+ }
+}
- /* get required compiler data */
- cd = jd->cd;
- code = jd->code;
+/* emit_exception_check ********************************************************
- rplp = code->rplpoints;
+ Emit an Exception check.
- for (i = 0; i < code->rplpointcount; ++i, ++rplp) {
- /* check code segment size */
+*******************************************************************************/
- MCODECHECK(100);
+void emit_exception_check(codegendata *cd, instruction *iptr)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_TST(REG_RESULT);
+ M_BNE(1);
+ M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_CHECK_EXCEPTION);
+ }
+}
- /* note start of stub code */
- outcode = (u1 *) (cd->mcodeptr - cd->mcodebase);
+/* emit_trap_compiler **********************************************************
- /* make machine code for patching */
+ Emit a trap instruction which calls the JIT compiler.
- savedmcodeptr = cd->mcodeptr;
- cd->mcodeptr = (u1 *) &(rplp->mcode) + 1; /* big-endian */
+*******************************************************************************/
- disp = (ptrint) ((s4 *) outcode - (s4 *) rplp->pc) - 1;
- M_BR(disp);
+void emit_trap_compiler(codegendata *cd)
+{
+ M_ALD_INTERN(REG_METHODPTR, REG_ZERO, TRAP_COMPILER);
+}
- cd->mcodeptr = savedmcodeptr;
- /* create stack frame - keep 16-byte aligned */
+/* emit_trap *******************************************************************
- M_AADD_IMM(REG_SP, -4 * 4, REG_SP);
+ Emit a trap instruction and return the original machine code.
- /* push address of `rplpoint` struct */
+*******************************************************************************/
- disp = dseg_add_address(cd, rplp);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST_INTERN(REG_ITMP3, REG_SP, 0 * 4);
+uint32_t emit_trap(codegendata *cd)
+{
+ // Get machine code which is patched back in later. The rap is 1
+ // instruction word long.
+ uint32_t mcode = *((uint32_t*) cd->mcodeptr);
- /* jump to replacement function */
+ M_ILLEGAL;
- disp = dseg_add_functionptr(cd, asm_replacement_out);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_MTCTR(REG_ITMP3);
- M_RTS;
- }
+ return mcode;
}
*******************************************************************************/
-#if !defined(NDEBUG)
void emit_verbosecall_enter(jitdata *jd)
{
+#if !defined(NDEBUG)
methodinfo *m;
codegendata *cd;
registerdata *rd;
- s4 s1, p, t, d;
- int stack_off;
- int stack_size;
- methoddesc *md;
+ methoddesc *md;
+ int32_t disp;
+ int32_t i;
+ int32_t s, d;
+
+ if (!JITDATA_HAS_FLAG_VERBOSECALL(jd))
+ return;
/* get required compiler data */
rd = jd->rd;
md = m->parseddesc;
-
- /* Build up Stackframe for builtin_trace_args call (a multiple of 16) */
- /* For Darwin: */
- /* LA + TRACE_ARGS_NUM u8 args + methodinfo + LR */
- /* LA_SIZE(=6*4) + 8*8 + 4 + 4 + 0(Padding) */
- /* 6 * 4 + 8 * 8 + 2 * 4 = 12 * 8 = 6 * 16 */
- /* For Linux: */
- /* LA + (TRACE_ARGS_NUM - INT_ARG_CNT/2) u8 args + methodinfo */
- /* + INT_ARG_CNT * 4 ( save integer registers) + LR + 8 + 8 (Padding) */
- /* LA_SIZE(=2*4) + 4 * 8 + 4 + 8 * 4 + 4 + 8 */
- /* 2 * 4 + 4 * 8 + 10 * 4 + 1 * 8 + 8= 12 * 8 = 6 * 16 */
-
- /* in nativestubs no Place to save the LR (Link Register) would be needed */
- /* but since the stack frame has to be aligned the 4 Bytes would have to */
- /* be padded again */
-
-#if defined(__DARWIN__)
- stack_size = LA_SIZE + (TRACE_ARGS_NUM + 1) * 8;
-#else
- stack_size = 6 * 16;
-#endif
/* mark trace code */
M_NOP;
+ /* On Darwin we need to allocate an additional 3*4 bytes of stack
+ for the arguments to trace_java_call_enter, we make it 2*8. */
+
M_MFLR(REG_ZERO);
M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
- M_STWU(REG_SP, REG_SP, -stack_size);
-
- M_CLR(REG_ITMP1); /* clear help register */
-
- /* save up to TRACE_ARGS_NUM arguments into the reserved stack space */
-#if defined(__DARWIN__)
- /* Copy Params starting from first to Stack */
- /* since TRACE_ARGS == INT_ARG_CNT all used integer argument regs */
- /* are saved */
- p = 0;
-#else
- /* Copy Params starting from fifth to Stack (INT_ARG_CNT/2) are in */
- /* integer argument regs */
- /* all integer argument registers have to be saved */
- for (p = 0; p < 8; p++) {
- d = rd->argintregs[p];
- /* save integer argument registers */
- M_IST(d, REG_SP, LA_SIZE + 4 * 8 + 4 + p * 4);
- }
- p = 4;
-#endif
- stack_off = LA_SIZE;
- for (; p < md->paramcount && p < TRACE_ARGS_NUM; p++, stack_off += 8) {
- t = md->paramtypes[p].type;
- if (IS_INT_LNG_TYPE(t)) {
- if (!md->params[p].inmemory) { /* Param in Arg Reg */
- if (IS_2_WORD_TYPE(t)) {
- M_IST(rd->argintregs[GET_HIGH_REG(md->params[p].regoff)]
- , REG_SP, stack_off);
- M_IST(rd->argintregs[GET_LOW_REG(md->params[p].regoff)]
- , REG_SP, stack_off + 4);
- } else {
- M_IST(REG_ITMP1, REG_SP, stack_off);
- M_IST(rd->argintregs[md->params[p].regoff]
- , REG_SP, stack_off + 4);
- }
- } else { /* Param on Stack */
- s1 = (md->params[p].regoff + cd->stackframesize) * 4
- + stack_size;
- if (IS_2_WORD_TYPE(t)) {
- M_ILD(REG_ITMP2, REG_SP, s1);
- M_IST(REG_ITMP2, REG_SP, stack_off);
- M_ILD(REG_ITMP2, REG_SP, s1 + 4);
- M_IST(REG_ITMP2, REG_SP, stack_off + 4);
- } else {
- M_IST(REG_ITMP1, REG_SP, stack_off);
- M_ILD(REG_ITMP2, REG_SP, s1);
- M_IST(REG_ITMP2, REG_SP, stack_off + 4);
- }
- }
- } else { /* IS_FLT_DBL_TYPE(t) */
- if (!md->params[p].inmemory) { /* in Arg Reg */
- s1 = rd->argfltregs[md->params[p].regoff];
- if (!IS_2_WORD_TYPE(t)) {
- M_IST(REG_ITMP1, REG_SP, stack_off);
- M_FST(s1, REG_SP, stack_off + 4);
- } else {
- M_DST(s1, REG_SP, stack_off);
- }
- } else { /* on Stack */
- /* this should not happen */
+ M_STWU(REG_SP, REG_SP, -(LA_SIZE + (2 + ARG_CNT + TMP_CNT) * 8));
+
+ /* save argument registers */
+
+ for (i = 0; i < md->paramcount; i++) {
+ if (!md->params[i].inmemory) {
+ s = md->params[i].regoff;
+ d = LA_SIZE + (i + 2) * 8;
+
+ switch (md->paramtypes[i].type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_IST(s, REG_SP, d);
+ break;
+ case TYPE_LNG:
+ M_LST(s, REG_SP, d);
+ break;
+ case TYPE_FLT:
+ M_FST(s, REG_SP, d);
+ break;
+ case TYPE_DBL:
+ M_DST(s, REG_SP, d);
+ break;
}
}
}
- /* load first 4 (==INT_ARG_CNT/2) arguments into integer registers */
-#if defined(__DARWIN__)
- for (p = 0; p < 8; p++) {
- d = rd->argintregs[p];
- M_ILD(d, REG_SP, LA_SIZE + p * 4);
- }
-#else
- /* LINUX */
- /* Set integer and float argument registers vor trace_args call */
- /* offset to saved integer argument registers */
- stack_off = LA_SIZE + 4 * 8 + 4;
- for (p = 0; (p < 4) && (p < md->paramcount); p++) {
- t = md->paramtypes[p].type;
- if (IS_INT_LNG_TYPE(t)) {
- /* "stretch" int types */
- if (!IS_2_WORD_TYPE(t)) {
- M_CLR(rd->argintregs[2 * p]);
- M_ILD(rd->argintregs[2 * p + 1], REG_SP,stack_off);
- stack_off += 4;
- } else {
- M_ILD(rd->argintregs[2 * p + 1], REG_SP,stack_off + 4);
- M_ILD(rd->argintregs[2 * p], REG_SP,stack_off);
- stack_off += 8;
- }
- } else { /* Float/Dbl */
- if (!md->params[p].inmemory) { /* Param in Arg Reg */
- /* use reserved Place on Stack (sp + 5 * 16) to copy */
- /* float/double arg reg to int reg */
- s1 = rd->argfltregs[md->params[p].regoff];
- if (!IS_2_WORD_TYPE(t)) {
- M_FST(s1, REG_SP, 5 * 16);
- M_ILD(rd->argintregs[2 * p + 1], REG_SP, 5 * 16);
- M_CLR(rd->argintregs[2 * p]);
- } else {
- M_DST(s1, REG_SP, 5 * 16);
- M_ILD(rd->argintregs[2 * p + 1], REG_SP, 5 * 16 + 4);
- M_ILD(rd->argintregs[2 * p], REG_SP, 5 * 16);
- }
- }
- }
- }
-#endif
-
- /* put methodinfo pointer on Stackframe */
- p = dseg_add_address(cd, m);
- M_ALD(REG_ITMP1, REG_PV, p);
-#if defined(__DARWIN__)
- M_AST(REG_ITMP1, REG_SP, LA_SIZE + TRACE_ARGS_NUM * 8);
-#else
- M_AST(REG_ITMP1, REG_SP, LA_SIZE + 4 * 8);
-#endif
- p = dseg_add_functionptr(cd, builtin_trace_args);
- M_ALD(REG_ITMP2, REG_PV, p);
+ /* pass methodinfo and pointers to the tracer function */
+
+ disp = dseg_add_address(cd, m);
+ M_ALD(REG_A0, REG_PV, disp);
+ M_AADD_IMM(REG_SP, LA_SIZE + 2 * 8, REG_A1);
+ M_AADD_IMM(REG_SP, LA_SIZE + (2 + ARG_CNT + TMP_CNT + cd->stackframesize) * 8, REG_A2);
+
+ disp = dseg_add_functionptr(cd, trace_java_call_enter);
+ M_ALD(REG_ITMP2, REG_PV, disp);
M_MTCTR(REG_ITMP2);
M_JSR;
-#if defined(__DARWIN__)
- /* restore integer argument registers from the reserved stack space */
-
- stack_off = LA_SIZE;
- for (p = 0; p < md->paramcount && p < TRACE_ARGS_NUM;
- p++, stack_off += 8) {
- t = md->paramtypes[p].type;
-
- if (IS_INT_LNG_TYPE(t)) {
- if (!md->params[p].inmemory) {
- if (IS_2_WORD_TYPE(t)) {
- M_ILD(rd->argintregs[GET_HIGH_REG(md->params[p].regoff)]
- , REG_SP, stack_off);
- M_ILD(rd->argintregs[GET_LOW_REG(md->params[p].regoff)]
- , REG_SP, stack_off + 4);
- } else {
- M_ILD(rd->argintregs[md->params[p].regoff]
- , REG_SP, stack_off + 4);
- }
+ /* restore argument registers */
+
+ for (i = 0; i < md->paramcount; i++) {
+ if (!md->params[i].inmemory) {
+ s = LA_SIZE + (i + 2) * 8;
+ d = md->params[i].regoff;
+
+ switch (md->paramtypes[i].type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_ILD(d, REG_SP, s);
+ break;
+ case TYPE_LNG:
+ M_LLD(d, REG_SP, s);
+ break;
+ case TYPE_FLT:
+ M_FLD(d, REG_SP, s);
+ break;
+ case TYPE_DBL:
+ M_DLD(d, REG_SP, s);
+ break;
}
}
}
-#else
- /* LINUX */
- for (p = 0; p < 8; p++) {
- d = rd->argintregs[p];
- /* save integer argument registers */
- M_ILD(d, REG_SP, LA_SIZE + 4 * 8 + 4 + p * 4);
- }
-#endif
- M_ALD(REG_ZERO, REG_SP, stack_size + LA_LR_OFFSET);
+ M_ALD(REG_ZERO, REG_SP, LA_SIZE + (2 + ARG_CNT + TMP_CNT) * 8 + LA_LR_OFFSET);
M_MTLR(REG_ZERO);
- M_LDA(REG_SP, REG_SP, stack_size);
+ M_LDA(REG_SP, REG_SP, LA_SIZE + (2 + ARG_CNT + TMP_CNT) * 8);
/* mark trace code */
M_NOP;
-}
#endif /* !defined(NDEBUG) */
+}
/* emit_verbosecall_exit *******************************************************
*******************************************************************************/
-#if !defined(NDEBUG)
void emit_verbosecall_exit(jitdata *jd)
{
+#if !defined(NDEBUG)
methodinfo *m;
codegendata *cd;
registerdata *rd;
methoddesc *md;
s4 disp;
+ if (!JITDATA_HAS_FLAG_VERBOSECALL(jd))
+ return;
+
/* get required compiler data */
m = jd->m;
M_NOP;
+ /* On Darwin we need to allocate an additional 2*4 bytes of stack
+ for the arguments to trace_java_call_exit, we make it 1*8. */
+
M_MFLR(REG_ZERO);
M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
- M_STWU(REG_SP, REG_SP, -(LA_SIZE + (1 + 2 + 2 + 1 + 4) * 4));
-
- /* save return registers */
+ M_STWU(REG_SP, REG_SP, -(LA_SIZE + (1 + 1) * 8));
- M_LST(REG_RESULT_PACKED, REG_SP, LA_SIZE + (1 + 2 + 2 + 1 + 0) * 4);
- M_DST(REG_FRESULT, REG_SP, LA_SIZE + (1 + 2 + 2 + 1 + 2) * 4);
+ /* save return value */
- /* keep this order */
switch (md->returntype.type) {
case TYPE_INT:
case TYPE_ADR:
-#if defined(__DARWIN__)
- M_MOV(REG_RESULT, rd->argintregs[2]);
- M_CLR(rd->argintregs[1]);
-#else
- M_MOV(REG_RESULT, rd->argintregs[3]);
- M_CLR(rd->argintregs[2]);
-#endif
+ M_IST(REG_RESULT, REG_SP, LA_SIZE + 1 * 8);
break;
-
case TYPE_LNG:
-#if defined(__DARWIN__)
- M_MOV(REG_RESULT2, rd->argintregs[2]);
- M_MOV(REG_RESULT, rd->argintregs[1]);
-#else
- M_MOV(REG_RESULT2, rd->argintregs[3]);
- M_MOV(REG_RESULT, rd->argintregs[2]);
-#endif
+ M_LST(REG_RESULT_PACKED, REG_SP, LA_SIZE + 1 * 8);
+ break;
+ case TYPE_FLT:
+ M_FST(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
+ break;
+ case TYPE_DBL:
+ M_DST(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
+ break;
+ case TYPE_VOID:
break;
}
- M_FLTMOVE(REG_FRESULT, rd->argfltregs[0]);
- M_FLTMOVE(REG_FRESULT, rd->argfltregs[1]);
-
disp = dseg_add_address(cd, m);
- M_ALD(rd->argintregs[0], REG_PV, disp);
+ M_ALD(REG_A0, REG_PV, disp);
+ M_AADD_IMM(REG_SP, LA_SIZE + 1 * 8, REG_A1);
- disp = dseg_add_functionptr(cd, builtin_displaymethodstop);
+ disp = dseg_add_functionptr(cd, trace_java_call_exit);
M_ALD(REG_ITMP2, REG_PV, disp);
M_MTCTR(REG_ITMP2);
M_JSR;
- /* restore return registers */
+ /* restore return value */
- M_LLD(REG_RESULT_PACKED, REG_SP, LA_SIZE + (1 + 2 + 2 + 1 + 0) * 4);
- M_DLD(REG_FRESULT, REG_SP, LA_SIZE + (1 + 2 + 2 + 1 + 2) * 4);
+ switch (md->returntype.type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_ILD(REG_RESULT, REG_SP, LA_SIZE + 1 * 8);
+ break;
+ case TYPE_LNG:
+ M_LLD(REG_RESULT_PACKED, REG_SP, LA_SIZE + 1 * 8);
+ break;
+ case TYPE_FLT:
+ M_FLD(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
+ break;
+ case TYPE_DBL:
+ M_DLD(REG_FRESULT, REG_SP, LA_SIZE + 1 * 8);
+ break;
+ case TYPE_VOID:
+ break;
+ }
- M_ALD(REG_ZERO, REG_SP, LA_SIZE + (1 + 2 + 2 + 1 + 4) * 4 + LA_LR_OFFSET);
+ M_ALD(REG_ZERO, REG_SP, LA_SIZE + (1 + 1) * 8 + LA_LR_OFFSET);
M_MTLR(REG_ZERO);
- M_LDA(REG_SP, REG_SP, LA_SIZE + (1 + 2 + 2 + 1 + 4) * 4);
+ M_LDA(REG_SP, REG_SP, LA_SIZE + (1 + 1) * 8);
/* mark trace code */
M_NOP;
-}
#endif /* !defined(NDEBUG) */
+}
/*