#include <assert.h>
#include <stdint.h>
-#include "vm/types.h"
-
#include "vm/jit/mips/codegen.h"
#include "vm/jit/mips/md.h"
#include "vm/jit/patcher-common.h"
-#define PATCH_BACK_ORIGINAL_MCODE \
- *((u4 *) pr->mpc) = (u4) pr->mcode; \
- md_icacheflush((u1 *) pr->mpc, PATCHER_CALL_SIZE);
-
-
/* patcher_patch_code **********************************************************
Just patches back the original machine code.
void patcher_patch_code(patchref_t *pr)
{
- PATCH_BACK_ORIGINAL_MCODE;
+ *((uint32_t*) pr->mpc) = (uint32_t) pr->mcode;
+ md_icacheflush((void*) pr->mpc, PATCHER_CALL_SIZE);
}
bool patcher_get_putstatic(patchref_t *pr)
{
- unresolved_field *uf;
- u1 *datap;
- fieldinfo *fi;
-
- /* get stuff from the stack */
+ unresolved_field* uf = (unresolved_field *) pr->ref;
+ uintptr_t* datap = (uintptr_t*) pr->datap;
- uf = (unresolved_field *) pr->ref;
- datap = (u1 *) pr->datap;
+ // Resolve the field.
+ fieldinfo* fi = resolve_field_eager(uf);
- /* get the fieldinfo */
-
- if (!(fi = resolve_field_eager(uf)))
+ if (fi == NULL)
return false;
- /* check if the field's class is initialized */
-
+ // Check if the field's class is initialized.
if (!(fi->clazz->state & CLASS_INITIALIZED))
if (!initialize_class(fi->clazz))
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
- /* patch the field value's address */
-
- *((intptr_t *) datap) = (intptr_t) fi->value;
-
- /* synchronize data cache */
+ // Patch the field value's address.
+ *datap = (uintptr_t) fi->value;
+ // Synchronize data cache.
md_dcacheflush(datap, SIZEOF_VOID_P);
+ // Patch back the original code.
+ patcher_patch_code(pr);
+
return true;
}
bool patcher_get_putfield(patchref_t *pr)
{
- u1 *ra;
- unresolved_field *uf;
- fieldinfo *fi;
-
- /* get stuff from the stack */
+ uint32_t* pc = (uint32_t*) pr->mpc;
+ unresolved_field* uf = (unresolved_field*) pr->ref;
- ra = (u1 *) pr->mpc;
- uf = (unresolved_field *) pr->ref;
+ // Resolve the field.
+ fieldinfo* fi = resolve_field_eager(uf);
- /* get the fieldinfo */
-
- if (!(fi = resolve_field_eager(uf)))
+ if (fi == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
#if SIZEOF_VOID_P == 4
if (IS_LNG_TYPE(fi->type)) {
# if WORDS_BIGENDIAN == 1
- /* ATTENTION: order of these instructions depend on M_LLD_INTERN */
- *((u4 *) (ra + 0 * 4)) |= (s2) ((fi->offset + 0) & 0x0000ffff);
- *((u4 *) (ra + 1 * 4)) |= (s2) ((fi->offset + 4) & 0x0000ffff);
+ // ATTENTION: order of these instructions depend on M_LLD_INTERN.
+ // The first instruction is patched back later.
+ pr->mcode |= (int16_t) ((fi->offset + 0) & 0x0000ffff);
+ pc[1] |= (int16_t) ((fi->offset + 4) & 0x0000ffff);
# else
- /* ATTENTION: order of these instructions depend on M_LLD_INTERN */
- *((u4 *) (ra + 0 * 4)) |= (s2) ((fi->offset + 4) & 0x0000ffff);
- *((u4 *) (ra + 1 * 4)) |= (s2) ((fi->offset + 0) & 0x0000ffff);
+ // ATTENTION: order of these instructions depend on M_LLD_INTERN.
+ // The first instruction is patched back later.
+ pr->mcode |= (int16_t) ((fi->offset + 4) & 0x0000ffff);
+ pc[1] |= (int16_t) ((fi->offset + 0) & 0x0000ffff);
# endif
}
else
#endif
- *((u4 *) (ra + 0 * 4)) |= (s2) (fi->offset & 0x0000ffff);
+ {
+ // The instruction is patched back later.
+ pr->mcode |= (int16_t) (fi->offset & 0x0000ffff);
+ }
- /* synchronize instruction cache */
+ // Synchronize instruction cache.
+ md_icacheflush(pc, 2 * 4);
- md_icacheflush(ra, 2 * 4);
+ // Patch back the original code.
+ patcher_patch_code(pr);
return true;
}
bool patcher_resolve_classref_to_classinfo(patchref_t *pr)
{
- constant_classref *cr;
- u1 *datap;
- classinfo *c;
+ constant_classref* cr = (constant_classref*) pr->ref;
+ uintptr_t* datap = (uintptr_t*) pr->datap;
- /* get stuff from the stack */
+ // Resolve the class.
+ classinfo* c = resolve_classref_eager(cr);
- cr = (constant_classref *) pr->ref;
- datap = (u1 *) pr->datap;
-
- /* get the classinfo */
-
- if (!(c = resolve_classref_eager(cr)))
+ if (c == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
- /* patch the classinfo pointer */
-
- *((intptr_t *) datap) = (intptr_t) c;
-
- /* synchronize data cache */
+ // Patch the class.
+ *datap = (uintptr_t) c;
+ // Synchronize data cache.
md_dcacheflush(datap, SIZEOF_VOID_P);
+ // Patch back the original code.
+ patcher_patch_code(pr);
+
return true;
}
bool patcher_resolve_classref_to_vftbl(patchref_t *pr)
{
- constant_classref *cr;
- u1 *datap;
- classinfo *c;
-
- /* get stuff from the stack */
+ constant_classref* cr = (constant_classref *) pr->ref;
+ uintptr_t* datap = (uintptr_t*) pr->datap;
- cr = (constant_classref *) pr->ref;
- datap = (u1 *) pr->datap;
+ // Resolve the field.
+ classinfo* c = resolve_classref_eager(cr);
- /* get the fieldinfo */
-
- if (!(c = resolve_classref_eager(cr)))
+ if (c == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
- /* patch super class' vftbl */
-
- *((intptr_t *) datap) = (intptr_t) c->vftbl;
-
- /* synchronize data cache */
+ // Patch super class' vftbl.
+ *datap = (uintptr_t) c->vftbl;
+ // Synchronize data cache.
md_dcacheflush(datap, SIZEOF_VOID_P);
+ // Patch back the original code.
+ patcher_patch_code(pr);
+
return true;
}
bool patcher_resolve_classref_to_flags(patchref_t *pr)
{
- constant_classref *cr;
- u1 *datap;
- classinfo *c;
-
- /* get stuff from the stack */
-
- cr = (constant_classref *) pr->ref;
- datap = (u1 *) pr->datap;
+ constant_classref* cr = (constant_classref*) pr->ref;
+ int32_t* datap = (int32_t*) pr->datap;
- /* get the fieldinfo */
+ // Resolve the class.
+ classinfo* c = resolve_classref_eager(cr);
- if (!(c = resolve_classref_eager(cr)))
+ if (c == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
- /* patch class flags */
-
- *((int32_t *) datap) = (int32_t) c->flags;
-
- /* synchronize data cache */
+ // Patch class flags.
+ *datap = (int32_t) c->flags;
+ // Synchronize data cache.
md_dcacheflush(datap, sizeof(int32_t));
+ // Patch back the original code.
+ patcher_patch_code(pr);
+
return true;
}
bool patcher_invokestatic_special(patchref_t *pr)
{
- unresolved_method *um;
- u1 *datap;
- methodinfo *m;
+ unresolved_method* um = (unresolved_method*) pr->ref;
+ void** datap = (void*) pr->datap;
- /* get stuff from the stack */
+ // Resolve the method.
+ methodinfo* m = resolve_method_eager(um);
- um = (unresolved_method *) pr->ref;
- datap = (u1 *) pr->datap;
-
- /* get the fieldinfo */
-
- if (!(m = resolve_method_eager(um)))
+ if (m == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
- /* patch stubroutine */
-
- *((ptrint *) datap) = (ptrint) m->stubroutine;
-
- /* synchronize data cache */
+ // Patch stubroutine.
+ *datap = (void*) m->stubroutine;
+ // Synchronize data cache.
md_dcacheflush(datap, SIZEOF_VOID_P);
+ // Patch back the original code.
+ patcher_patch_code(pr);
+
return true;
}
bool patcher_invokevirtual(patchref_t *pr)
{
- u1 *ra;
- unresolved_method *um;
- methodinfo *m;
-
- /* get stuff from the stack */
+ uint32_t* pc = (uint32_t*) pr->mpc;
+ unresolved_method* um = (unresolved_method*) pr->ref;
- ra = (u1 *) pr->mpc;
- um = (unresolved_method *) pr->ref;
+ // Resolve the method.
+ methodinfo* m = resolve_method_eager(um);
- /* get the fieldinfo */
-
- if (!(m = resolve_method_eager(um)))
+ if (m == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
- /* patch vftbl index */
-
- *((s4 *) (ra + 1 * 4)) |=
- (s4) ((OFFSET(vftbl_t, table[0]) +
- sizeof(methodptr) * m->vftblindex) & 0x0000ffff);
+ // Patch vftbl index.
+ pc[1] |= (int32_t) ((OFFSET(vftbl_t, table[0]) + sizeof(methodptr) * m->vftblindex) & 0x0000ffff);
- /* synchronize instruction cache */
+ // Synchronize instruction cache.
+ md_icacheflush(pc + 1, 1 * 4);
- md_icacheflush(ra + 1 * 4, 1 * 4);
+ // Patch back the original code.
+ patcher_patch_code(pr);
return true;
}
bool patcher_invokeinterface(patchref_t *pr)
{
- u1 *ra;
- unresolved_method *um;
- methodinfo *m;
+ uint32_t* pc = (uint32_t*) pr->mpc;
+ unresolved_method* um = (unresolved_method*) pr->ref;
- /* get stuff from the stack */
+ // Resovlve the method.
+ methodinfo* m = resolve_method_eager(um);
- ra = (u1 *) pr->mpc;
- um = (unresolved_method *) pr->ref;
-
- /* get the fieldinfo */
-
- if (!(m = resolve_method_eager(um)))
+ if (m == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
- /* patch interfacetable index */
-
- *((s4 *) (ra + 1 * 4)) |=
- (s4) ((OFFSET(vftbl_t, interfacetable[0]) -
- sizeof(methodptr*) * m->clazz->index) & 0x0000ffff);
+ // Patch interfacetable index.
+ pc[1] |= (int32_t) ((OFFSET(vftbl_t, interfacetable[0]) - sizeof(methodptr*) * m->clazz->index) & 0x0000ffff);
- /* patch method offset */
+ // Patch method offset.
+ pc[2] |= (int32_t) ((sizeof(methodptr) * (m - m->clazz->methods)) & 0x0000ffff);
- *((s4 *) (ra + 2 * 4)) |=
- (s4) ((sizeof(methodptr) * (m - m->clazz->methods)) & 0x0000ffff);
+ // Synchronize instruction cache.
+ md_icacheflush(pc + 1, 2 * 4);
- /* synchronize instruction cache */
-
- md_icacheflush(ra + 1 * 4, 2 * 4);
+ // Patch back the original code.
+ patcher_patch_code(pr);
return true;
}
bool patcher_checkcast_interface(patchref_t *pr)
{
- u1 *ra;
- constant_classref *cr;
- classinfo *c;
-
- /* get stuff from the stack */
-
- ra = (u1 *) pr->mpc;
- cr = (constant_classref *) pr->ref;
+ uint32_t* pc = (uint32_t*) pr->mpc;
+ constant_classref* cr = (constant_classref*) pr->ref;
- /* get the fieldinfo */
+ // Resolve the class.
+ classinfo* c = resolve_classref_eager(cr);
- if (!(c = resolve_classref_eager(cr)))
+ if (c == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
+ // Patch super class index.
+ pc[2] |= (int32_t) (-(c->index) & 0x0000ffff);
+ pc[6] |= (int32_t) ((OFFSET(vftbl_t, interfacetable[0]) - c->index * sizeof(methodptr*)) & 0x0000ffff);
- /* patch super class index */
+ // Synchronize instruction cache.
+ md_icacheflush(pc + 2, 5 * 4);
- *((s4 *) (ra + 2 * 4)) |= (s4) (-(c->index) & 0x0000ffff);
- /* *((s4 *) (ra + 5 * 4)) |= (s4) ((OFFSET(vftbl_t, interfacetable[0]) - */
- /* c->index * sizeof(methodptr*)) & 0x0000ffff); */
- *((s4 *) (ra + 6 * 4)) |=
- (s4) ((OFFSET(vftbl_t, interfacetable[0]) -
- c->index * sizeof(methodptr*)) & 0x0000ffff);
-
- /* synchronize instruction cache */
-
- md_icacheflush(ra + 2 * 4, 5 * 4);
+ // Patch back the original code.
+ patcher_patch_code(pr);
return true;
}
bool patcher_instanceof_interface(patchref_t *pr)
{
- u1 *ra;
- constant_classref *cr;
- classinfo *c;
-
- /* get stuff from the stack */
+ uint32_t* pc = (uint32_t*) pr->mpc;
+ constant_classref* cr = (constant_classref*) pr->ref;
- ra = (u1 *) pr->mpc;
- cr = (constant_classref *) pr->ref;
+ // Resolve the method.
+ classinfo* c = resolve_classref_eager(cr);
- /* get the fieldinfo */
-
- if (!(c = resolve_classref_eager(cr)))
+ if (c == NULL)
return false;
- PATCH_BACK_ORIGINAL_MCODE;
-
- /* patch super class index */
-
- *((s4 *) (ra + 2 * 4)) |= (s4) (-(c->index) & 0x0000ffff);
- *((s4 *) (ra + 5 * 4)) |=
- (s4) ((OFFSET(vftbl_t, interfacetable[0]) -
- c->index * sizeof(methodptr*)) & 0x0000ffff);
+ // Patch super class index.
+ pc[2] |= (int32_t) (-(c->index) & 0x0000ffff);
+ pc[5] |= (int32_t) ((OFFSET(vftbl_t, interfacetable[0]) - c->index * sizeof(methodptr*)) & 0x0000ffff);
- /* synchronize instruction cache */
+ // Synchronize instruction cache.
+ md_icacheflush(pc + 2, 4 * 4);
- md_icacheflush(ra + 2 * 4, 4 * 4);
+ // Patch back the original code.
+ patcher_patch_code(pr);
return true;
}
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