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64ccd054f2
2010-08-15 Paolo Bonzini <bonzini@gnu.org> * lightning/i386/core.h (jit_ldr_c, jit_ldxr_c, jit_ldr_s, jit_ldxr_s): Move... * lightning/i386/core-32.h: ... here. * lightning/i386/core-64.h (jit_ldr_c, jit_ldxr_c, jit_ldr_s, Use movsbq and movswq.
179 lines
7.4 KiB
C
179 lines
7.4 KiB
C
/******************************** -*- C -*- ****************************
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*
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* Platform-independent layer (i386 version)
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*
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***********************************************************************/
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/***********************************************************************
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*
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* Copyright 2000, 2001, 2002, 2003, 2006 Free Software Foundation, Inc.
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* Written by Paolo Bonzini and Matthew Flatt.
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*
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* This file is part of GNU lightning.
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*
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* GNU lightning is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU lightning is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with GNU lightning; see the file COPYING.LESSER; if not, write to the
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* Free Software Foundation, 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA.
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*
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***********************************************************************/
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#ifndef __lightning_core_h
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#define __lightning_core_h
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#define JIT_CAN_16 1
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#define JIT_AP _EBP
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#define JIT_R_NUM 3
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#define JIT_R(i) (_EAX + (i))
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#define JIT_V_NUM 3
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#define JIT_V(i) ((i) == 0 ? _EBX : _ESI + (i) - 1)
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struct jit_local_state {
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int framesize;
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int argssize;
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int alloca_offset;
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int alloca_slack;
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};
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/* Whether a register is used for the user-accessible registers. */
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#define jit_save(reg) 1
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#define jit_base_prolog() (_jitl.framesize = 20, _jitl.alloca_offset = 0, \
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PUSHLr(_EBX), PUSHLr(_ESI), PUSHLr(_EDI), PUSHLr(_EBP), MOVLrr(_ESP, _EBP))
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#define jit_base_ret(ofs) \
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(((ofs) < 0 ? LEAVE_() : POPLr(_EBP)), \
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POPLr(_EDI), POPLr(_ESI), POPLr(_EBX), RET_())
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/* Used internally. SLACK is used by the Darwin ABI which keeps the stack
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aligned to 16-bytes. */
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#define jit_allocai_internal(amount, slack) \
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(((amount) < _jitl.alloca_slack \
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? (void)0 \
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: (void)(_jitl.alloca_slack += (amount) + (slack), \
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((amount) + (slack) == sizeof (int) \
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? PUSHLr(_EAX) \
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: SUBLir((amount) + (slack), _ESP)))), \
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_jitl.alloca_slack -= (amount), \
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_jitl.alloca_offset -= (amount))
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/* Stack */
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#define jit_pushr_i(rs) PUSHLr(rs)
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#define jit_popr_i(rs) POPLr(rs)
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/* The += in argssize allows for stack pollution */
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#ifdef __APPLE__
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/* Stack must stay 16-byte aligned: */
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# define jit_prepare_i(ni) (((ni & 0x3) \
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? (void)SUBLir(4 * ((((ni) + 3) & ~(0x3)) - (ni)), JIT_SP) \
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: (void)0), \
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_jitl.argssize += (((ni) + 3) & ~(0x3)))
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#define jit_allocai(n) \
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jit_allocai_internal ((n), (_jitl.alloca_slack - (n)) & 15)
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#define jit_prolog(n) (jit_base_prolog(), jit_subi_i (JIT_SP, JIT_SP, 12))
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#define jit_ret() jit_base_ret (-12)
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#else
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# define jit_prepare_i(ni) (_jitl.argssize += (ni))
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#define jit_allocai(n) \
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jit_allocai_internal ((n), 0)
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#define jit_prolog(n) jit_base_prolog()
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#define jit_ret() jit_base_ret (_jitl.alloca_offset)
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#endif
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#define jit_calli(label) (CALLm( ((unsigned long) (label))), _jit.x.pc)
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#define jit_callr(reg) CALLsr(reg)
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#define jit_pusharg_i(rs) PUSHLr(rs)
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#define jit_finish(sub) ((void)jit_calli((sub)), ADDLir(sizeof(long) * _jitl.argssize, JIT_SP), _jitl.argssize = 0)
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#define jit_finishr(reg) (jit_callr((reg)), ADDLir(sizeof(long) * _jitl.argssize, JIT_SP), _jitl.argssize = 0)
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#define jit_arg_c() ((_jitl.framesize += sizeof(int)) - sizeof(int))
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#define jit_arg_uc() ((_jitl.framesize += sizeof(int)) - sizeof(int))
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#define jit_arg_s() ((_jitl.framesize += sizeof(int)) - sizeof(int))
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#define jit_arg_us() ((_jitl.framesize += sizeof(int)) - sizeof(int))
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#define jit_arg_i() ((_jitl.framesize += sizeof(int)) - sizeof(int))
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#define jit_arg_ui() ((_jitl.framesize += sizeof(int)) - sizeof(int))
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#define jit_arg_l() ((_jitl.framesize += sizeof(long)) - sizeof(long))
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#define jit_arg_ul() ((_jitl.framesize += sizeof(long)) - sizeof(long))
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#define jit_arg_p() ((_jitl.framesize += sizeof(long)) - sizeof(long))
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#define jit_movi_p(d, is) (MOVLir (((long)(is)), (d)), _jit.x.pc)
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#define jit_patch_long_at(jump_pc,v) (*_PSL((jump_pc) - sizeof(long)) = _jit_SL((jit_insn *)(v) - (jump_pc)))
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#define jit_patch_at(jump_pc,v) jit_patch_long_at(jump_pc, v)
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/* Memory */
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#define jit_check8(rs) ( (rs) <= _EBX )
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#define jit_reg8(rs) ( ((rs) == _SI || (rs) == _DI) ? _AL : (_rN(rs) | _AL ))
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#define jit_reg16(rs) ( _rN(rs) | _AX )
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#define jit_replace(s, rep, op) \
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(jit_pushr_i(rep), \
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MOVLrr((s), (rep)), \
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op, jit_popr_i(rep))
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#define jit_movbrm(rs, dd, db, di, ds) \
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(jit_check8(rs) \
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? MOVBrm(jit_reg8(rs), dd, db, di, ds) \
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: jit_replace(rs, \
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((dd != _EAX && db != _EAX && di != _EAX) ? _EAX : \
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((dd != _ECX && db != _ECX && di != _ECX) ? _ECX : _EDX)), \
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MOVBrm(((dd != _EAX && db != _EAX && di != _EAX) ? _AL : \
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((dd != _ECX && db != _ECX && di != _ECX) ? _CL : _DL)), \
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dd, db, di, ds)))
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#define jit_ldr_c(d, rs) MOVSBLmr(0, (rs), 0, 0, (d))
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#define jit_ldxr_c(d, s1, s2) MOVSBLmr(0, (s1), (s2), 1, (d))
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#define jit_ldr_s(d, rs) MOVSWLmr(0, (rs), 0, 0, (d))
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#define jit_ldxr_s(d, s1, s2) MOVSWLmr(0, (s1), (s2), 1, (d))
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#define jit_ldi_c(d, is) MOVSBLmr((is), 0, 0, 0, (d))
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#define jit_ldxi_c(d, rs, is) MOVSBLmr((is), (rs), 0, 0, (d))
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#define jit_ldi_uc(d, is) MOVZBLmr((is), 0, 0, 0, (d))
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#define jit_ldxi_uc(d, rs, is) MOVZBLmr((is), (rs), 0, 0, (d))
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#define jit_sti_c(id, rs) jit_movbrm((rs), (id), 0, 0, 0)
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#define jit_stxi_c(id, rd, rs) jit_movbrm((rs), (id), (rd), 0, 0)
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#define jit_ldi_s(d, is) MOVSWLmr((is), 0, 0, 0, (d))
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#define jit_ldxi_s(d, rs, is) MOVSWLmr((is), (rs), 0, 0, (d))
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#define jit_ldi_us(d, is) MOVZWLmr((is), 0, 0, 0, (d))
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#define jit_ldxi_us(d, rs, is) MOVZWLmr((is), (rs), 0, 0, (d))
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#define jit_sti_s(id, rs) MOVWrm(jit_reg16(rs), (id), 0, 0, 0)
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#define jit_stxi_s(id, rd, rs) MOVWrm(jit_reg16(rs), (id), (rd), 0, 0)
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#define jit_ldi_i(d, is) MOVLmr((is), 0, 0, 0, (d))
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#define jit_ldxi_i(d, rs, is) MOVLmr((is), (rs), 0, 0, (d))
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#define jit_ldr_i(d, rs) MOVLmr(0, (rs), 0, 0, (d))
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#define jit_ldxr_i(d, s1, s2) MOVLmr(0, (s1), (s2), 1, (d))
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#define jit_sti_i(id, rs) MOVLrm((rs), (id), 0, 0, 0)
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#define jit_stxi_i(id, rd, rs) MOVLrm((rs), (id), (rd), 0, 0)
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#endif /* __lightning_core_h */
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