jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, Handle method, TRAPS) {
if (inst->is_call() || inst->is_jump()) {
assert(NativeCall::instruction_size == (int)NativeJump::instruction_size, "unexpected size");
return (pc_offset + NativeCall::instruction_size);
} else if (inst->is_mov_literal64()) {
// mov+call instruction pair
jint offset = pc_offset + NativeMovConstReg::instruction_size;
u_char* call = (u_char*) (_instructions->start() + offset);
if (call[0] == Assembler::REX_B) {
offset += 1; /* prefix byte for extended register R8-R15 */
call++;
}
assert(call[0] == 0xFF, "expected call");
offset += 2; /* opcode byte + modrm byte */
return (offset);
} else if (inst->is_call_reg()) {
// the inlined vtable stub contains a "call register" instruction
assert(method.not_null(), "only valid for virtual calls");
return (pc_offset + ((NativeCallReg *) inst)->next_instruction_offset());
} else if (inst->is_cond_jump()) {
address pc = (address) (inst);
return pc_offset + (jint) (Assembler::locate_next_instruction(pc) - pc);
} else {
JVMCI_ERROR_0("unsupported type of instruction for call site");
}
}
jint CodeInstaller::pd_next_offset(NativeInstruction* inst, jint pc_offset, Handle method, TRAPS) {
if (inst->is_call() || inst->is_jump()) {
return pc_offset + NativeCall::instruction_size;
} else if (inst->is_call_reg()) {
return pc_offset + NativeCallReg::instruction_size;
} else if (inst->is_sethi()) {
return pc_offset + NativeFarCall::instruction_size;
} else {
JVMCI_ERROR_0("unsupported type of instruction for call site");
return 0;
}
}
