Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: emit.c 8115 2007-06-20 19:14:05Z michi $
-
*/
#include "config.h"
#include <assert.h>
+#include <stdint.h>
#include "vm/types.h"
M_LLD(tempreg, REG_SP, disp);
break;
case TYPE_FLT:
- M_FLD(tempreg, REG_SP, disp);
- break;
case TYPE_DBL:
M_DLD(tempreg, REG_SP, disp);
break;
M_LST(d, REG_SP, disp);
break;
case TYPE_FLT:
- M_FST(d, REG_SP, disp);
- break;
case TYPE_DBL:
M_DST(d, REG_SP, disp);
break;
void emit_arrayindexoutofbounds_check(codegendata *cd, instruction *iptr, s4 s1, s4 s2)
{
if (INSTRUCTION_MUST_CHECK(iptr)) {
- M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));
+ M_ILD(REG_ITMP3, s1, OFFSET(java_array_t, size));
M_TRAPGEU(s2, REG_ITMP3);
}
}
}
-/* emit_patcher_stubs **********************************************************
+/* emit_trap *******************************************************************
- Generates the code for the patcher stubs.
+ Emit a trap instruction and return the original machine code.
*******************************************************************************/
-void emit_patcher_stubs(jitdata *jd)
+uint32_t emit_trap(codegendata *cd)
{
- codegendata *cd;
- patchref *pref;
- u4 mcode;
- u1 *savedmcodeptr;
- u1 *tmpmcodeptr;
- s4 targetdisp;
- s4 disp;
-
- /* get required compiler data */
-
- cd = jd->cd;
-
- /* generate code patching stub call code */
-
- targetdisp = 0;
-
- for (pref = cd->patchrefs; pref != NULL; pref = pref->next) {
- /* check code segment size */
-
- MCODECHECK(100);
-
- /* Get machine code which is patched back in later. The
- call is 1 instruction word long. */
-
- tmpmcodeptr = (u1 *) (cd->mcodebase + pref->branchpos);
-
- mcode = *((u4 *) tmpmcodeptr);
-
- /* Patch in the call to call the following code (done at
- compile time). */
-
- savedmcodeptr = cd->mcodeptr; /* save current mcodeptr */
- cd->mcodeptr = tmpmcodeptr; /* set mcodeptr to patch position */
-
- disp = ((u4 *) savedmcodeptr) - (((u4 *) tmpmcodeptr) + 1);
- M_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 */
-
- M_LDA(REG_ITMP3, REG_PV, pref->branchpos);
- M_AST_INTERN(REG_ITMP3, REG_SP, 5 * 4);
-
- /* move pointer to java_objectheader onto stack */
-
-#if defined(ENABLE_THREADS)
- /* order reversed because of data segment layout */
-
- (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
-
- /* 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);
-
- /* move class/method/field reference onto stack */
+ uint32_t mcode;
- disp = dseg_add_address(cd, pref->ref);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST_INTERN(REG_ITMP3, REG_SP, 2 * 4);
+ /* Get machine code which is patched back in later. The
+ trap is 1 instruction word long. */
- /* move data segment displacement onto stack */
+ mcode = *((u4 *) cd->mcodeptr);
- disp = dseg_add_s4(cd, pref->disp);
- M_ILD(REG_ITMP3, REG_PV, disp);
- M_IST_INTERN(REG_ITMP3, REG_SP, 1 * 4);
+ M_ALD_INTERN(REG_ZERO, REG_ZERO, EXCEPTION_HARDWARE_PATCHER);
- /* move patcher function pointer onto stack */
-
- disp = dseg_add_functionptr(cd, pref->patcher);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST_INTERN(REG_ITMP3, REG_SP, 0 * 4);
-
- 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);
- }
- }
+ return mcode;
}
-/* emit_replacement_stubs ******************************************************
-
- Generates the code for the replacement stubs.
-
-*******************************************************************************/
-
-#if defined(ENABLE_REPLACEMENT)
-void emit_replacement_stubs(jitdata *jd)
-{
- codegendata *cd;
- codeinfo *code;
- rplpoint *rplp;
- s4 disp;
- s4 i;
-#if !defined(NDEBUG)
- u1 *savedmcodeptr;
-#endif
-
- /* get required compiler data */
-
- cd = jd->cd;
- code = jd->code;
-
- rplp = code->rplpoints;
-
- /* store beginning of replacement stubs */
-
- code->replacementstubs = (u1*) (cd->mcodeptr - cd->mcodebase);
-
- for (i = 0; i < code->rplpointcount; ++i, ++rplp) {
- /* do not generate stubs for non-trappable points */
-
- if (rplp->flags & RPLPOINT_FLAG_NOTRAP)
- continue;
-
- /* check code segment size */
-
- MCODECHECK(100);
-
-#if !defined(NDEBUG)
- savedmcodeptr = cd->mcodeptr;
-#endif
-
- /* create stack frame - keep 16-byte aligned */
-
- M_AADD_IMM(REG_SP, -4 * 4, REG_SP);
-
- /* 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);
-
- /* jump to replacement function */
-
- disp = dseg_add_functionptr(cd, asm_replacement_out);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_MTCTR(REG_ITMP3);
- M_RTS;
-
- assert((cd->mcodeptr - savedmcodeptr) == 4*REPLACEMENT_STUB_SIZE);
- }
-}
-#endif /* defined(ENABLE_REPLACEMENT) */
-
-
/* emit_verbosecall_enter ******************************************************
Generates the code for the call trace.
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;
+ int32_t x;
if (!JITDATA_HAS_FLAG_VERBOSECALL(jd))
return;
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_MFLR(REG_ZERO);
M_AST(REG_ZERO, REG_SP, LA_LR_OFFSET);
- M_STWU(REG_SP, REG_SP, -stack_size);
+ M_STWU(REG_SP, REG_SP, -(LA_SIZE + (1 + ARG_CNT + TMP_CNT) * 8));
- M_CLR(REG_ITMP1); /* clear help register */
+ M_CLR(REG_ITMP1); /* prepare a "zero" 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 = abi_registers_integer_argument[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) {
- s1 = md->params[p].regoff;
-
- if (IS_2_WORD_TYPE(t)) {
- M_IST(GET_HIGH_REG(s1), REG_SP, stack_off);
- M_IST(GET_LOW_REG(s1), REG_SP, stack_off + 4);
- }
- else {
- M_IST(REG_ITMP1, REG_SP, stack_off);
- M_IST(s1, REG_SP, stack_off + 4);
- }
- }
- else {
- 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 {
- if (!md->params[p].inmemory) {
- s1 = 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 {
- /* this should not happen */
+ /* save argument registers */
+
+ for (i = 0; i < md->paramcount; i++) {
+ if (!md->params[i].inmemory) {
+ s = md->params[i].regoff;
+ d = LA_SIZE + (1 + i) * 8;
+
+ switch (md->paramtypes[i].type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_IST(REG_ITMP1, REG_SP, d); /* high-bits are zero */
+ M_IST(s, REG_SP, d + 4);
+ break;
+ case TYPE_LNG:
+ M_LST(s, REG_SP, d);
+ break;
+ case TYPE_FLT:
+ M_IST(REG_ITMP1, REG_SP, d); /* high-bits are zero */
+ M_FST(s, REG_SP, d + 4);
+ 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 = abi_registers_integer_argument[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 */
+ /* load arguments as longs */
- stack_off = LA_SIZE + 4 * 8 + 4;
+ d = 0;
- for (p = 0; (p < 4) && (p < md->paramcount); p++) {
- t = md->paramtypes[p].type;
+ for (i = 0; i < md->paramcount && i < TRACE_ARGS_NUM; i++) {
+ s = LA_SIZE + (1 + i) * 8;
+ x = PACK_REGS(abi_registers_integer_argument[d + 1],
+ abi_registers_integer_argument[d]);
- if (IS_INT_LNG_TYPE(t)) {
- /* "stretch" int types */
- if (!IS_2_WORD_TYPE(t)) {
- M_CLR(abi_registers_integer_argument[2 * p]);
- M_ILD(abi_registers_integer_argument[2 * p + 1], REG_SP,stack_off);
- stack_off += 4;
- }
- else {
- M_ILD(abi_registers_integer_argument[2 * p + 1], REG_SP,stack_off + 4);
- M_ILD(abi_registers_integer_argument[2 * p], REG_SP,stack_off);
- stack_off += 8;
- }
- }
- else {
- if (!md->params[p].inmemory) {
- /* use reserved Place on Stack (sp + 5 * 16) to copy */
- /* float/double arg reg to int reg */
-
- s1 = md->params[p].regoff;
-
- if (!IS_2_WORD_TYPE(t)) {
- M_FST(s1, REG_SP, 5 * 16);
- M_ILD(abi_registers_integer_argument[2 * p + 1], REG_SP, 5 * 16);
- M_CLR(abi_registers_integer_argument[2 * p]);
- }
- else {
- M_DST(s1, REG_SP, 5 * 16);
- M_ILD(abi_registers_integer_argument[2 * p + 1], REG_SP, 5 * 16 + 4);
- M_ILD(abi_registers_integer_argument[2 * p], REG_SP, 5 * 16);
- }
- }
- }
+ M_LLD(x, REG_SP, s);
+
+ d += 2;
}
-#endif
- /* put methodinfo pointer on Stackframe */
- p = dseg_add_address(cd, m);
- M_ALD(REG_ITMP1, REG_PV, p);
+ /* put methodinfo pointer as last argument on the stack */
+
+ disp = dseg_add_address(cd, m);
+ M_ALD(REG_ITMP1, REG_PV, disp);
#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);
+ M_AST(REG_ITMP1, REG_SP, LA_SIZE);
#endif
- p = dseg_add_functionptr(cd, builtin_verbosecall_enter);
- M_ALD(REG_ITMP2, REG_PV, p);
+ disp = dseg_add_functionptr(cd, builtin_verbosecall_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;
+ /* restore argument registers */
- if (IS_INT_LNG_TYPE(t)) {
- if (!md->params[p].inmemory) {
- s1 = md->params[p].regoff;
+ for (i = 0; i < md->paramcount; i++) {
+ if (!md->params[i].inmemory) {
+ s = LA_SIZE + (1 + i) * 8;
+ d = md->params[i].regoff;
- if (IS_2_WORD_TYPE(t)) {
- M_ILD(GET_HIGH_REG(s1), REG_SP, stack_off);
- M_ILD(GET_LOW_REG(s1), REG_SP, stack_off + 4);
- }
- else
- M_ILD(s1, REG_SP, stack_off + 4);
+ switch (md->paramtypes[i].type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ M_ILD(d, REG_SP, s + 4); /* get low-bits */
+ break;
+ case TYPE_LNG:
+ M_LLD(d, REG_SP, s);
+ break;
+ case TYPE_FLT:
+ M_FLD(d, REG_SP, s + 4); /* get low-bits */
+ break;
+ case TYPE_DBL:
+ M_DLD(d, REG_SP, s);
+ break;
}
}
}
-#else
- /* LINUX */
- for (p = 0; p < 8; p++) {
- d = abi_registers_integer_argument[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 + (1 + 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 + (1 + ARG_CNT + TMP_CNT) * 8);
/* mark trace code */
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