#endif
#include "vm/builtin.h"
+#include "vm/exceptions.h"
#include "vm/jit/abi-asm.h"
#include "vm/jit/asmpart.h"
s4 emit_load(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
{
codegendata *cd;
+ s4 disp;
s4 reg;
/* get required compiler data */
if (IS_INMEMORY(src->flags)) {
COUNT_SPILLS;
- if (IS_FLT_DBL_TYPE(src->type))
- M_DLD(tempreg, REG_SP, src->vv.regoff * 8);
- else
- M_LLD(tempreg, REG_SP, src->vv.regoff * 8);
+ disp = src->vv.regoff * 8;
+
+ switch (src->type) {
+ case TYPE_INT:
+ case TYPE_LNG:
+ case TYPE_ADR:
+ 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;
}
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))
- M_DST(d, REG_SP, dst->vv.regoff * 8);
- else
- M_LST(d, REG_SP, dst->vv.regoff * 8);
+ disp = dst->vv.regoff * 8;
+
+ switch (dst->type) {
+ case TYPE_INT:
+ case TYPE_LNG:
+ case TYPE_ADR:
+ 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);
+ }
}
}
}
if (s1 != d) {
- if (IS_FLT_DBL_TYPE(src->type))
- M_FMOV(s1, d);
- else
+ switch (dst->type) {
+ case TYPE_INT:
+ case TYPE_LNG:
+ case TYPE_ADR:
M_MOV(s1, d);
+ break;
+ case TYPE_FLT:
+ case TYPE_DBL:
+ M_FMOV(s1, d);
+ break;
+ default:
+ vm_abort("emit_copy: unknown type %d", dst->type);
+ }
}
emit_store(jd, iptr, dst, d);
}
-/* emit_arrayindexoutofbounds_check ********************************************
+/* emit_branch *****************************************************************
- Emit an ArrayIndexOutOfBoundsException check.
+ Emits the code for conditional and unconditional branchs.
*******************************************************************************/
-void emit_arrayindexoutofbounds_check(codegendata *cd, instruction *iptr, s4 s1, s4 s2)
+void emit_branch(codegendata *cd, s4 disp, s4 condition, s4 reg, u4 opt)
{
- if (INSTRUCTION_MUST_CHECK(iptr)) {
- M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));
- M_CMPULT(s2, REG_ITMP3, REG_ITMP3);
- M_BEQZ(REG_ITMP3, 0);
- codegen_add_arrayindexoutofboundsexception_ref(cd, s2);
- }
-}
+ s4 checkdisp;
+ s4 branchdisp;
+ /* calculate the different displacements */
-/* emit_arraystore_check *******************************************************
+ checkdisp = (disp - 4);
+ branchdisp = (disp - 4) >> 2;
- Emit an ArrayStoreException check.
+ /* check which branch to generate */
-*******************************************************************************/
+ if (condition == BRANCH_UNCONDITIONAL) {
+ /* check displacement for overflow */
-void emit_arraystore_check(codegendata *cd, instruction *iptr, s4 reg)
-{
- M_BEQZ(reg, 0);
- codegen_add_arraystoreexception_ref(cd);
-}
+ if ((checkdisp < (s4) 0xffe00000) || (checkdisp > (s4) 0x001fffff)) {
+ /* if the long-branches flag isn't set yet, do it */
+ if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
+ log_println("setting error");
+ cd->flags |= (CODEGENDATA_FLAG_ERROR |
+ CODEGENDATA_FLAG_LONGBRANCHES);
+ }
-/* emit_classcast_check ********************************************************
+ vm_abort("emit_branch: emit unconditional long-branch code");
+ }
+ else {
+ M_BR(branchdisp);
+ }
+ }
+ else {
+ /* and displacement for overflow */
- Emit a ClassCastException check.
+ if ((checkdisp < (s4) 0xffe00000) || (checkdisp > (s4) 0x001fffff)) {
+ /* if the long-branches flag isn't set yet, do it */
-*******************************************************************************/
+ if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
+ log_println("setting error");
+ cd->flags |= (CODEGENDATA_FLAG_ERROR |
+ CODEGENDATA_FLAG_LONGBRANCHES);
+ }
-void emit_classcast_check(codegendata *cd, instruction *iptr, s4 condition, s4 reg, s4 s1)
-{
- if (INSTRUCTION_MUST_CHECK(iptr)) {
- M_BNEZ(reg, 0);
- codegen_add_classcastexception_ref(cd, s1);
+ vm_abort("emit_branch: emit conditional long-branch code");
+ }
+ else {
+ switch (condition) {
+ case BRANCH_EQ:
+ M_BEQZ(reg, branchdisp);
+ break;
+ case BRANCH_NE:
+ M_BNEZ(reg, branchdisp);
+ break;
+ case BRANCH_LT:
+ M_BLTZ(reg, branchdisp);
+ break;
+ case BRANCH_GE:
+ M_BGEZ(reg, branchdisp);
+ break;
+ case BRANCH_GT:
+ M_BGTZ(reg, branchdisp);
+ break;
+ case BRANCH_LE:
+ M_BLEZ(reg, branchdisp);
+ break;
+ default:
+ vm_abort("emit_branch: unknown condition %d", condition);
+ }
+ }
}
}
-/* emit_nullpointer_check ******************************************************
+/* emit_arithmetic_check *******************************************************
- Emit a NullPointerException check.
+ Emit an ArithmeticException check.
*******************************************************************************/
-void emit_nullpointer_check(codegendata *cd, instruction *iptr, s4 reg)
+void emit_arithmetic_check(codegendata *cd, instruction *iptr, s4 reg)
{
if (INSTRUCTION_MUST_CHECK(iptr)) {
- M_BEQZ(reg, 0);
- codegen_add_nullpointerexception_ref(cd);
+ M_BNEZ(reg, 1);
+ /* Destination register must not be REG_ZERO, because then no
+ SIGSEGV is thrown. */
+ M_ALD_INTERN(reg, REG_ZERO, EXCEPTION_HARDWARE_ARITHMETIC);
}
}
-/* emit_exception_stubs ********************************************************
+/* emit_arrayindexoutofbounds_check ********************************************
- Generates the code for the exception stubs.
+ Emit an ArrayIndexOutOfBoundsException check.
*******************************************************************************/
-void emit_exception_stubs(jitdata *jd)
+void emit_arrayindexoutofbounds_check(codegendata *cd, instruction *iptr, s4 s1, s4 s2)
{
- 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 index register into REG_ITMP1 */
-
- /* Check if the exception is an
- ArrayIndexOutOfBoundsException. If so, move index register
- into a4. */
-
- if (er->reg != -1)
- M_MOV(er->reg, rd->argintregs[4]);
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));
+ M_CMPULT(s2, REG_ITMP3, REG_ITMP3);
+ M_BNEZ(REG_ITMP3, 1);
+ M_ALD_INTERN(s2, REG_ZERO, EXCEPTION_HARDWARE_ARRAYINDEXOUTOFBOUNDS);
+ }
+}
- /* calcuate exception address */
- M_LDA(rd->argintregs[3], REG_PV, er->branchpos - 4);
+/* emit_classcast_check ********************************************************
- /* move function to call into REG_ITMP3 */
+ Emit a ClassCastException check.
- disp = dseg_add_functionptr(cd, er->function);
- M_ALD(REG_ITMP3, REG_PV, disp);
+*******************************************************************************/
- if (targetdisp == 0) {
- targetdisp = ((u4 *) cd->mcodeptr) - ((u4 *) cd->mcodebase);
+void emit_classcast_check(codegendata *cd, instruction *iptr, s4 condition, s4 reg, s4 s1)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ switch (condition) {
+ case BRANCH_EQ:
+ M_BNEZ(reg, 1);
+ break;
+ case BRANCH_LE:
+ M_BGTZ(reg, 1);
+ break;
+ default:
+ vm_abort("emit_classcast_check: unknown condition %d", condition);
+ }
+ M_ALD_INTERN(s1, REG_ZERO, EXCEPTION_HARDWARE_CLASSCAST);
+ }
+}
- M_MOV(REG_PV, rd->argintregs[0]);
- M_MOV(REG_SP, rd->argintregs[1]);
- if (jd->isleafmethod)
- M_MOV(REG_RA, rd->argintregs[2]);
- else
- M_ALD(rd->argintregs[2],
- REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P);
+/* emit_nullpointer_check ******************************************************
- M_LDA(REG_SP, REG_SP, -2 * 8);
- M_AST(rd->argintregs[3], REG_SP, 0 * 8); /* store XPC */
+ Emit a NullPointerException check.
- if (jd->isleafmethod)
- M_AST(REG_RA, REG_SP, 1 * 8);
+*******************************************************************************/
- M_MOV(REG_ITMP3, REG_PV);
- M_JSR(REG_RA, REG_PV);
- disp = (s4) (cd->mcodeptr - cd->mcodebase);
- M_LDA(REG_PV, REG_RA, -disp);
+void emit_nullpointer_check(codegendata *cd, instruction *iptr, s4 reg)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_BNEZ(reg, 1);
+ /* Destination register must not be REG_ZERO, because then no
+ SIGSEGV is thrown. */
+ M_ALD_INTERN(reg, REG_ZERO, EXCEPTION_HARDWARE_NULLPOINTER);
+ }
+}
- M_MOV(REG_RESULT, REG_ITMP1_XPTR);
- if (jd->isleafmethod)
- M_ALD(REG_RA, REG_SP, 1 * 8);
+/* emit_exception_check ********************************************************
- M_ALD(REG_ITMP2_XPC, REG_SP, 0 * 8);
- M_LDA(REG_SP, REG_SP, 2 * 8);
+ Emit an Exception check.
- disp = dseg_add_functionptr(cd, asm_handle_exception);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_JMP(REG_ZERO, REG_ITMP3);
- }
- else {
- disp = (((u4 *) cd->mcodebase) + targetdisp) -
- (((u4 *) cd->mcodeptr) + 1);
+*******************************************************************************/
- M_BR(disp);
- }
+void emit_exception_check(codegendata *cd, instruction *iptr)
+{
+ if (INSTRUCTION_MUST_CHECK(iptr)) {
+ M_BNEZ(REG_RESULT, 1);
+ /* Destination register must not be REG_ZERO, because then no
+ SIGSEGV is thrown. */
+ M_ALD_INTERN(REG_RESULT, REG_ZERO, EXCEPTION_HARDWARE_EXCEPTION);
}
}
projects / cacao.git / blobdiff