/* op-i386.h -- i386 specific support routines for micro operations
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/* op-i386.h -- i386 specific support routines for micro operations
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Copyright (C) 2005 György `nog' Jeney, nog@sdf.lonestar.org
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Copyright (C) 2005 György `nog' Jeney, nog@sdf.lonestar.org
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Copyright (C) 2008 Embecosm Limited
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Copyright (C) 2008 Embecosm Limited
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
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This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify it
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your option)
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Software Foundation; either version 3 of the License, or (at your option)
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any later version.
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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more details.
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You should have received a copy of the GNU General Public License along
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This program is commented throughout in a fashion suitable for processing
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/* This program is commented throughout in a fashion suitable for processing
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with Doxygen. */
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with Doxygen. */
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#ifndef OP_I386__H
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#ifndef OP_I386__H
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#define OP_I386__H
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#define OP_I386__H
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#define OP_JUMP(x) asm("jmp *%0" : : "rm" (x))
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#define OP_JUMP(x) asm("jmp *%0" : : "rm" (x))
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#define FORCE_RET asm volatile ("")
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#define FORCE_RET asm volatile ("")
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/* Does a function call (with no arguments) makeing sure that gcc doesn't peddle
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/* Does a function call (with no arguments) makeing sure that gcc doesn't peddle
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* the stack. (FIXME: Is this safe??) */
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* the stack. (FIXME: Is this safe??) */
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#define SPEEDY_CALL(func) asm("call "#func"\n")
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#define SPEEDY_CALL(func) asm("call "#func"\n")
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/* Return out of the recompiled code */
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/* Return out of the recompiled code */
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asm (" .align 2\n"
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asm (" .align 2\n"
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" .p2align 4,,15\n"
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" .p2align 4,,15\n"
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".globl op_do_jump\n"
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".globl op_do_jump\n"
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" .type op_do_jump,@function\n"
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" .type op_do_jump,@function\n"
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"op_do_jump:\n"
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"op_do_jump:\n"
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" ret\n" " ret\n" "1:\n" " .size op_do_jump,1b-op_do_jump\n");
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" ret\n" " ret\n" "1:\n" " .size op_do_jump,1b-op_do_jump\n");
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#endif /* OP_I386__H */
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#endif /* OP_I386__H */
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