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[/] [or1k/] [tags/] [stable_0_2_0_rc1/] [or1ksim/] [cpu/] [or32/] [op_i386.h] - Rev 1572
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/* op_i386.h -- i386 specific support routines for micro operations Copyright (C) 2005 György `nog' Jeney, nog@sdf.lonestar.org This file is part of OpenRISC 1000 Architectural Simulator. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "common_i386.h" #define OP_JUMP(x) asm("jmp *%0" : : "rm" (x)) #define FORCE_RET asm volatile ("") /* Handles the scheduler and PC updateing. Yes, useing MMX is a requirement. It * just won't change. This must be as compact as possible */ #define HANDLE_SCHED(func, jmp) asm("paddd %%mm1, %%mm0\n" \ "\tmovd %%mm0, %%eax\n" \ "\ttestl %%eax, %%eax\n" \ "\tjg ." jmp "\n" \ "\tcall "#func"\n" \ "\t." jmp ":" : : ) static inline int32_t do_cycles(void) { register uint32_t cycles; asm("paddd %%mm1, %%mm0\n" "\tmovd %%mm0, %0\n" : "=r" (cycles)); return cycles; } /* Joins runtime.sim.mem_cycles with the cycle counter */ static inline void join_mem_cycles(void) { runtime.sim.mem_cycles = -runtime.sim.mem_cycles; asm volatile ("movd %0, %%mm2\n" "\tpaddd %%mm2, %%mm0" : : "m" (runtime.sim.mem_cycles)); runtime.sim.mem_cycles = 0; } static inline void or_longjmp(void *loc) __attribute__((noreturn)); static inline void or_longjmp(void *loc) { /* We push a trampoline address (dyn_ret_stack_prot) onto the stack to be able * to detect if any ret instructions found their way into an operation. */ asm("\tmovl %0, %%eax\n" "\tmovl %1, %%esp\n" "\tmovl $%2, %%ebp\n" "\tpush $dyn_ret_stack_prot\n" "\tpush $dyn_ret_stack_prot\n" "\tpush $dyn_ret_stack_prot\n" "\tjmp *%%eax\n" : : "m" (loc), "m" (rec_stack_base), "m" (cpu_state)); }
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