This module generates MIPS machine code for a sequence of
intermediate code commands (ICMDs).
- $Id: codegen.c 5173 2006-07-25 15:57:11Z twisti $
+ $Id: codegen.c 5291 2006-09-04 17:45:32Z twisti $
*/
registerdata *rd;
s4 len, s1, s2, s3, d, disp;
ptrint a;
- s4 parentargs_base;
stackptr src;
varinfo *var;
basicblock *bptr;
savedregs_num += (INT_SAV_CNT - rd->savintreguse);
savedregs_num += (FLT_SAV_CNT - rd->savfltreguse);
- parentargs_base = rd->memuse + savedregs_num;
+ cd->stackframesize = rd->memuse + savedregs_num;
#if defined(ENABLE_THREADS)
/* space to save argument of monitor_enter */
if (checksync && (m->flags & ACC_SYNCHRONIZED))
- parentargs_base++;
+ cd->stackframesize++;
#endif
- /* adjust frame size for 16 byte alignment */
+ /* keep stack 16-byte aligned */
- if (parentargs_base & 1)
- parentargs_base++;
+ if (cd->stackframesize & 1)
+ cd->stackframesize++;
/* create method header */
(void) dseg_addaddress(cd, code); /* Filler */
#endif
(void) dseg_addaddress(cd, code); /* CodeinfoPointer */
- (void) dseg_adds4(cd, parentargs_base * 8); /* FrameSize */
+ (void) dseg_adds4(cd, cd->stackframesize * 8); /* FrameSize */
#if defined(ENABLE_THREADS)
/* IsSync contains the offset relative to the stack pointer for the
/* create stack frame (if necessary) */
- if (parentargs_base)
- M_LDA(REG_SP, REG_SP, -parentargs_base * 8);
+ if (cd->stackframesize)
+ M_LDA(REG_SP, REG_SP, -cd->stackframesize * 8);
/* save return address and used callee saved registers */
- p = parentargs_base;
+ p = cd->stackframesize;
if (!jd->isleafmethod) {
p--; M_AST(REG_RA, REG_SP, p * 8);
}
} else { /* stack arguments */
if (!(var->flags & INMEMORY)) { /* stack arg -> register */
- M_LLD(var->regoff, REG_SP, (parentargs_base + s1) * 8);
+ M_LLD(var->regoff, REG_SP, (cd->stackframesize + s1) * 8);
} else { /* stack arg -> spilled */
- var->regoff = parentargs_base + s1;
+ var->regoff = cd->stackframesize + s1;
}
}
} else { /* stack arguments */
if (!(var->flags & INMEMORY)) { /* stack-arg -> register */
if (IS_2_WORD_TYPE(t))
- M_DLD(var->regoff, REG_SP, (parentargs_base + s1) * 8);
+ M_DLD(var->regoff, REG_SP, (cd->stackframesize + s1) * 8);
else
- M_FLD(var->regoff, REG_SP, (parentargs_base + s1) * 8);
+ M_FLD(var->regoff, REG_SP, (cd->stackframesize + s1) * 8);
} else /* stack-arg -> spilled */
- var->regoff = parentargs_base + s1;
+ var->regoff = cd->stackframesize + s1;
}
}
} /* end for */
{
s4 i, p;
- p = parentargs_base;
+ p = cd->stackframesize;
/* call trace function */
/* deallocate stack and return */
- if (parentargs_base) {
+ if (cd->stackframesize) {
s4 lo, hi;
- disp = parentargs_base * 8;
+ disp = cd->stackframesize * 8;
lo = (short) (disp);
hi = (short) (((disp) - lo) >> 16);
dseg_createlinenumbertable(cd);
-
/* generate exception and patcher stubs */
- {
- exceptionref *eref;
- patchref *pref;
- u8 mcode;
- u1 *savedmcodeptr;
- u1 *tmpmcodeptr;
-
- savedmcodeptr = NULL;
-
- /* generate exception stubs */
-
- for (eref = cd->exceptionrefs; eref != NULL; eref = eref->next) {
- gen_resolvebranch(cd->mcodebase + eref->branchpos,
- eref->branchpos, cd->mcodeptr - cd->mcodebase);
-
- MCODECHECK(100);
-
- /* Check if the exception is an
- ArrayIndexOutOfBoundsException. If so, move index register
- into REG_ITMP1. */
-
- if (eref->reg != -1)
- M_MOV(eref->reg, REG_ITMP1);
-
- /* calcuate exception address */
-
- M_LDA(REG_ITMP2_XPC, REG_PV, eref->branchpos - 4);
-
- /* move function to call into REG_ITMP3 */
-
- disp = dseg_addaddress(cd, eref->function);
- M_ALD(REG_ITMP3, REG_PV, disp);
-
- if (savedmcodeptr != NULL) {
- disp = ((u4 *) savedmcodeptr) - (((u4 *) cd->mcodeptr) + 1);
- M_BR(disp);
- M_NOP;
-
- } else {
- savedmcodeptr = cd->mcodeptr;
-
- 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, parentargs_base * 8 - SIZEOF_VOID_P);
-
- M_MOV(REG_ITMP2_XPC, rd->argintregs[3]);
- M_MOV(REG_ITMP1, rd->argintregs[4]);
-
- M_ASUB_IMM(REG_SP, 2 * 8, REG_SP);
- M_AST(REG_ITMP2_XPC, REG_SP, 0 * 8);
-
- if (jd->isleafmethod)
- M_AST(REG_RA, REG_SP, 1 * 8);
-
- M_JSR(REG_RA, REG_ITMP3);
- M_NOP;
- M_MOV(REG_RESULT, REG_ITMP1_XPTR);
-
- if (jd->isleafmethod)
- M_ALD(REG_RA, REG_SP, 1 * 8);
-
- M_ALD(REG_ITMP2_XPC, REG_SP, 0 * 8);
- M_AADD_IMM(REG_SP, 2 * 8, REG_SP);
-
- a = dseg_addaddress(cd, asm_handle_exception);
- M_ALD(REG_ITMP3, REG_PV, a);
- M_JMP(REG_ITMP3);
- M_NOP;
- }
- }
-
-
- /* generate code patching stub call code */
-
- 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 2 instruction words long. */
-
- tmpmcodeptr = (u1 *) (cd->mcodebase + pref->branchpos);
-
- /* We need to split this, because an unaligned 8 byte read
- causes a SIGSEGV. */
-
- mcode = ((u8) ((u4 *) tmpmcodeptr)[1] << 32) +
- ((u4 *) tmpmcodeptr)[0];
-
- /* 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);
-
- if ((disp < (s4) 0xffff8000) || (disp > (s4) 0x00007fff)) {
- *exceptionptr =
- new_internalerror("Jump offset is out of range: %d > +/-%d",
- disp, 0x00007fff);
- return false;
- }
-
- M_BR(disp);
- M_NOP;
-
- cd->mcodeptr = savedmcodeptr; /* restore the current mcodeptr */
-
- /* create stack frame */
-
- M_ASUB_IMM(REG_SP, 6 * 8, REG_SP);
-
- /* calculate return address and move it onto the stack */
-
- M_LDA(REG_ITMP3, REG_PV, pref->branchpos);
- M_AST(REG_ITMP3, REG_SP, 5 * 8);
-
- /* move pointer to java_objectheader onto stack */
-
-#if defined(ENABLE_THREADS)
- /* create a virtual java_objectheader */
-
- (void) dseg_addaddress(cd, NULL); /* flcword */
- (void) dseg_addaddress(cd, lock_get_initial_lock_word()); /* monitorPtr */
- disp = dseg_addaddress(cd, NULL); /* vftbl */
-
- M_LDA(REG_ITMP3, REG_PV, disp);
- M_AST(REG_ITMP3, REG_SP, 4 * 8);
-#else
- /* do nothing */
-#endif
-
- /* move machine code onto stack */
-
- disp = dseg_adds8(cd, mcode);
- M_LLD(REG_ITMP3, REG_PV, disp);
- M_LST(REG_ITMP3, REG_SP, 3 * 8);
-
- /* move class/method/field reference onto stack */
-
- disp = dseg_addaddress(cd, pref->ref);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST(REG_ITMP3, REG_SP, 2 * 8);
-
- /* move data segment displacement onto stack */
-
- disp = dseg_adds4(cd, pref->disp);
- M_ILD(REG_ITMP3, REG_PV, disp);
- M_IST(REG_ITMP3, REG_SP, 1 * 8);
-
- /* move patcher function pointer onto stack */
-
- disp = dseg_addaddress(cd, pref->patcher);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST(REG_ITMP3, REG_SP, 0 * 8);
-
- disp = dseg_addaddress(cd, asm_patcher_wrapper);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_JMP(REG_ITMP3);
- M_NOP;
- }
-
- /* generate replacement-out stubs */
-
- {
- int i;
-
- replacementpoint = jd->code->rplpoints;
-
- for (i = 0; i < jd->code->rplpointcount; ++i, ++replacementpoint) {
- /* check code segment size */
-
- MCODECHECK(100);
-
- /* note start of stub code */
-
- replacementpoint->outcode = (u1*) (ptrint) (cd->mcodeptr - cd->mcodebase);
-
- /* make machine code for patching */
-
- savedmcodeptr = cd->mcodeptr;
- cd->mcodeptr = (u1 *) &(replacementpoint->mcode);
-
- disp = (ptrint)((s4*)replacementpoint->outcode - (s4*)replacementpoint->pc) - 1;
- if ((disp < (s4) 0xffff8000) || (disp > (s4) 0x00007fff)) {
- *exceptionptr =
- new_internalerror("Jump offset is out of range: %d > +/-%d",
- disp, 0x00007fff);
- return false;
- }
- M_BR(disp);
- M_NOP; /* delay slot */
-
- cd->mcodeptr = savedmcodeptr;
-
- /* create stack frame - 16-byte aligned */
-
- M_ASUB_IMM(REG_SP, 2 * 8, REG_SP);
-
- /* push address of `rplpoint` struct */
-
- disp = dseg_addaddress(cd, replacementpoint);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_AST(REG_ITMP3, REG_SP, 0 * 8);
-
- /* jump to replacement function */
-
- disp = dseg_addaddress(cd, asm_replacement_out);
- M_ALD(REG_ITMP3, REG_PV, disp);
- M_JMP(REG_ITMP3);
- M_NOP; /* delay slot */
- }
- }
- }
+ emit_exception_stubs(jd);
+ emit_patcher_stubs(jd);
+ emit_replacement_stubs(jd);
codegen_finish(jd);
codeinfo *code;
codegendata *cd;
registerdata *rd;
- s4 stackframesize; /* size of stackframe if needed */
methoddesc *md;
s4 nativeparams;
s4 i, j; /* count variables */
/* calculate stack frame size */
- stackframesize =
+ cd->stackframesize =
1 + /* return address */
sizeof(stackframeinfo) / SIZEOF_VOID_P +
sizeof(localref_table) / SIZEOF_VOID_P +
(void) dseg_addaddress(cd, code); /* CodeinfoPointer */
#endif
(void) dseg_addaddress(cd, code); /* MethodPointer */
- (void) dseg_adds4(cd, stackframesize * 8); /* FrameSize */
+ (void) dseg_adds4(cd, cd->stackframesize * 8); /* FrameSize */
(void) dseg_adds4(cd, 0); /* IsSync */
(void) dseg_adds4(cd, 0); /* IsLeaf */
(void) dseg_adds4(cd, 0); /* IntSave */
/* generate stub code */
- M_LDA(REG_SP, REG_SP, -stackframesize * 8); /* build up stackframe */
- M_AST(REG_RA, REG_SP, stackframesize * 8 - SIZEOF_VOID_P); /* store ra */
+ M_LDA(REG_SP, REG_SP, -cd->stackframesize * 8); /* build up stackframe */
+ M_AST(REG_RA, REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P); /* store RA*/
#if !defined(NDEBUG)
/* call trace function */
/* prepare data structures for native function call */
- M_AADD_IMM(REG_SP, stackframesize * 8 - SIZEOF_VOID_P, rd->argintregs[0]);
+ M_AADD_IMM(REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P, rd->argintregs[0]);
M_MOV(REG_PV, rd->argintregs[1]);
- M_AADD_IMM(REG_SP, stackframesize * 8, rd->argintregs[2]);
- M_ALD(rd->argintregs[3], REG_SP, stackframesize * 8 - SIZEOF_VOID_P);
+ M_AADD_IMM(REG_SP, cd->stackframesize * 8, rd->argintregs[2]);
+ M_ALD(rd->argintregs[3], REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P);
disp = dseg_addaddress(cd, codegen_start_native_call);
M_ALD(REG_ITMP3, REG_PV, disp);
M_JSR(REG_RA, REG_ITMP3);
}
} else {
- s1 = md->params[i].regoff + stackframesize;
+ s1 = md->params[i].regoff + cd->stackframesize;
s2 = nmd->params[j].regoff;
M_ALD(REG_ITMP1, REG_SP, s1 * 8);
M_AST(REG_ITMP1, REG_SP, s2 * 8);
}
} else {
- s1 = md->params[i].regoff + stackframesize;
+ s1 = md->params[i].regoff + cd->stackframesize;
s2 = nmd->params[j].regoff;
if (IS_2_WORD_TYPE(t)) {
M_DLD(REG_FTMP1, REG_SP, s1 * 8);
/* remove native stackframe info */
- M_AADD_IMM(REG_SP, stackframesize * 8 - SIZEOF_VOID_P, rd->argintregs[0]);
+ M_AADD_IMM(REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P, rd->argintregs[0]);
disp = dseg_addaddress(cd, codegen_finish_native_call);
M_ALD(REG_ITMP3, REG_PV, disp);
M_JSR(REG_RA, REG_ITMP3);
M_DLD(REG_FRESULT, REG_SP, 0 * 8);
}
- M_ALD(REG_RA, REG_SP, stackframesize * 8 - SIZEOF_VOID_P); /* load ra */
+ M_ALD(REG_RA, REG_SP, cd->stackframesize * 8 - SIZEOF_VOID_P); /* load RA */
/* check for exception */
M_BNEZ(REG_ITMP1_XPTR, 2); /* if no exception then return */
- M_LDA(REG_SP, REG_SP, stackframesize * 8); /* remove stackframe (DELAY) */
+ M_LDA(REG_SP, REG_SP, cd->stackframesize * 8); /* DELAY SLOT */
M_RET(REG_RA); /* return to caller */
M_NOP; /* DELAY SLOT */
*/
+#include "config.h"
+
#include "vm/types.h"
#include "md-abi.h"
+#include "vm/jit/mips/codegen.h"
+
+#if defined(ENABLE_THREADS)
+# include "threads/native/lock.h"
+#endif
+
+#include "vm/exceptions.h"
+#include "vm/stringlocal.h" /* XXX for gen_resolvebranch */
+#include "vm/jit/asmpart.h"
+#include "vm/jit/dseg.h"
#include "vm/jit/emit.h"
#include "vm/jit/jit.h"
-#include "vm/jit/mips/codegen.h"
+#include "vm/jit/replace.h"
/* code generation functions **************************************************/
}
+/* emit_exception_stubs ********************************************************
+
+ Generates the code for the exception stubs.
+
+*******************************************************************************/
+
+void emit_exception_stubs(jitdata *jd)
+{
+ codegendata *cd;
+ registerdata *rd;
+ exceptionref *eref;
+ s4 targetdisp;
+ s4 disp;
+
+ /* get required compiler data */
+
+ cd = jd->cd;
+ rd = jd->rd;
+
+ /* generate exception stubs */
+
+ targetdisp = 0;
+
+ for (eref = cd->exceptionrefs; eref != NULL; eref = eref->next) {
+ gen_resolvebranch(cd->mcodebase + eref->branchpos,
+ eref->branchpos, cd->mcodeptr - cd->mcodebase);
+
+ MCODECHECK(100);
+
+ /* Check if the exception is an
+ ArrayIndexOutOfBoundsException. If so, move index register
+ into REG_ITMP1. */
+
+ if (eref->reg != -1)
+ M_MOV(eref->reg, REG_ITMP1);
+
+ /* calcuate exception address */
+
+ M_LDA(REG_ITMP2_XPC, REG_PV, eref->branchpos - 4);
+
+ /* move function to call into REG_ITMP3 */
+
+ disp = dseg_addaddress(cd, eref->function);
+ M_ALD(REG_ITMP3, REG_PV, disp);
+
+ if (targetdisp == 0) {
+ targetdisp = ((u4 *) cd->mcodeptr) - ((u4 *) cd->mcodebase);
+
+ 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);
+
+ M_MOV(REG_ITMP2_XPC, rd->argintregs[3]);
+ M_MOV(REG_ITMP1, rd->argintregs[4]);
+
+ M_ASUB_IMM(REG_SP, 2 * 8, REG_SP);
+ M_AST(REG_ITMP2_XPC, REG_SP, 0 * 8);
+
+ if (jd->isleafmethod)
+ M_AST(REG_RA, REG_SP, 1 * 8);
+
+ M_JSR(REG_RA, REG_ITMP3);
+ M_NOP;
+ M_MOV(REG_RESULT, REG_ITMP1_XPTR);
+
+ if (jd->isleafmethod)
+ M_ALD(REG_RA, REG_SP, 1 * 8);
+
+ M_ALD(REG_ITMP2_XPC, REG_SP, 0 * 8);
+ M_AADD_IMM(REG_SP, 2 * 8, REG_SP);
+
+ disp = dseg_addaddress(cd, asm_handle_exception);
+ M_ALD(REG_ITMP3, REG_PV, disp);
+ M_JMP(REG_ITMP3);
+ M_NOP;
+ }
+ else {
+ disp = (((u4 *) cd->mcodebase) + targetdisp) -
+ (((u4 *) cd->mcodeptr) + 1);
+ M_BR(disp);
+ M_NOP;
+ }
+ }
+}
+
+
+/* emit_patcher_stubs **********************************************************
+
+ Generates the code for the patcher stubs.
+
+*******************************************************************************/
+
+void emit_patcher_stubs(jitdata *jd)
+{
+ 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 2 instruction words long. */
+
+ tmpmcodeptr = (u1 *) (cd->mcodebase + pref->branchpos);
+
+ /* We need to split this, because an unaligned 8 byte read
+ causes a SIGSEGV. */
+
+ mcode = ((u8) ((u4 *) tmpmcodeptr)[1] << 32) +
+ ((u4 *) tmpmcodeptr)[0];
+
+ /* 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);
+
+ if ((disp < (s4) 0xffff8000) || (disp > (s4) 0x00007fff)) {
+ *exceptionptr =
+ new_internalerror("Jump offset is out of range: %d > +/-%d",
+ disp, 0x00007fff);
+ return;
+ }
+
+ M_BR(disp);
+ M_NOP;
+
+ cd->mcodeptr = savedmcodeptr; /* restore the current mcodeptr */
+
+ /* create stack frame */
+
+ M_ASUB_IMM(REG_SP, 6 * 8, REG_SP);
+
+ /* calculate return address and move it onto the stack */
+
+ M_LDA(REG_ITMP3, REG_PV, pref->branchpos);
+ M_AST(REG_ITMP3, REG_SP, 5 * 8);
+
+ /* move pointer to java_objectheader onto stack */
+
+#if defined(ENABLE_THREADS)
+ /* create a virtual java_objectheader */
+
+ (void) dseg_addaddress(cd, NULL); /* flcword */
+ (void) dseg_addaddress(cd, lock_get_initial_lock_word());
+ disp = dseg_addaddress(cd, NULL); /* vftbl */
+
+ M_LDA(REG_ITMP3, REG_PV, disp);
+ M_AST(REG_ITMP3, REG_SP, 4 * 8);
+#else
+ /* do nothing */
+#endif
+
+ /* move machine code onto stack */
+
+ disp = dseg_adds8(cd, mcode);
+ M_LLD(REG_ITMP3, REG_PV, disp);
+ M_LST(REG_ITMP3, REG_SP, 3 * 8);
+
+ /* move class/method/field reference onto stack */
+
+ disp = dseg_addaddress(cd, pref->ref);
+ M_ALD(REG_ITMP3, REG_PV, disp);
+ M_AST(REG_ITMP3, REG_SP, 2 * 8);
+
+ /* move data segment displacement onto stack */
+
+ disp = dseg_adds4(cd, pref->disp);
+ M_ILD(REG_ITMP3, REG_PV, disp);
+ M_IST(REG_ITMP3, REG_SP, 1 * 8);
+
+ /* move patcher function pointer onto stack */
+
+ disp = dseg_addaddress(cd, pref->patcher);
+ M_ALD(REG_ITMP3, REG_PV, disp);
+ M_AST(REG_ITMP3, REG_SP, 0 * 8);
+
+ if (targetdisp == 0) {
+ targetdisp = ((u4 *) cd->mcodeptr) - ((u4 *) cd->mcodebase);
+
+ disp = dseg_addaddress(cd, asm_patcher_wrapper);
+ M_ALD(REG_ITMP3, REG_PV, disp);
+ M_JMP(REG_ITMP3);
+ M_NOP;
+ }
+ else {
+ disp = (((u4 *) cd->mcodebase) + targetdisp) -
+ (((u4 *) cd->mcodeptr) + 1);
+ M_BR(disp);
+ M_NOP;
+ }
+ }
+}
+
+
+/* emit_replacement_stubs ******************************************************
+
+ Generates the code for the replacement stubs.
+
+*******************************************************************************/
+
+void emit_replacement_stubs(jitdata *jd)
+{
+ codegendata *cd;
+ codeinfo *code;
+ rplpoint *rplp;
+ u1 *savedmcodeptr;
+ s4 disp;
+ s4 i;
+
+ /* get required compiler data */
+
+ cd = jd->cd;
+ code = jd->code;
+
+ rplp = code->rplpoints;
+
+ for (i = 0; i < code->rplpointcount; ++i, ++rplp) {
+ /* check code segment size */
+
+ MCODECHECK(100);
+
+ /* note start of stub code */
+
+ rplp->outcode = (u1 *) (ptrint) (cd->mcodeptr - cd->mcodebase);
+
+ /* make machine code for patching */
+
+ savedmcodeptr = cd->mcodeptr;
+ cd->mcodeptr = (u1 *) &(rplp->mcode);
+
+ disp = (ptrint) ((s4 *) rplp->outcode - (s4 *) rplp->pc) - 1;
+
+ if ((disp < (s4) 0xffff8000) || (disp > (s4) 0x00007fff)) {
+ *exceptionptr =
+ new_internalerror("Jump offset is out of range: %d > +/-%d",
+ disp, 0x00007fff);
+ return;
+ }
+
+ M_BR(disp);
+ M_NOP; /* delay slot */
+
+ cd->mcodeptr = savedmcodeptr;
+
+ /* create stack frame - 16-byte aligned */
+
+ M_ASUB_IMM(REG_SP, 2 * 8, REG_SP);
+
+ /* push address of `rplpoint` struct */
+
+ disp = dseg_addaddress(cd, rplp);
+ M_ALD(REG_ITMP3, REG_PV, disp);
+ M_AST(REG_ITMP3, REG_SP, 0 * 8);
+
+ /* jump to replacement function */
+
+ disp = dseg_addaddress(cd, asm_replacement_out);
+ M_ALD(REG_ITMP3, REG_PV, disp);
+ M_JMP(REG_ITMP3);
+ M_NOP; /* delay slot */
+ }
+}
+
+
/*
* These are local overrides for various environment variables in Emacs.
* Please do not remove this and leave it at the end of the file, where
projects / cacao.git / commitdiff