60bf84cf4c
Register fp (frame pointer) is a bad choice for compilations without optimisation, because the compiler makes heavy use of this register (so the resulting code crashes). Register s0 had been used for TCG_AREG1 in earlier releases, but was no longer used and is now free for TCG_AREG0. The resulting code works for compilations without optimisation (tested with qemu mips in qemu mips on x86 host). Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/*
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* Tiny Code Generator for QEMU
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*
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* Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org>
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* Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net>
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* Based on i386/tcg-target.c - Copyright (c) 2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#define TCG_TARGET_MIPS 1
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#define TCG_TARGET_REG_BITS 32
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#ifdef __MIPSEB__
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# define TCG_TARGET_WORDS_BIGENDIAN
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#endif
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#define TCG_TARGET_NB_REGS 32
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enum {
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TCG_REG_ZERO = 0,
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TCG_REG_AT,
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TCG_REG_V0,
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TCG_REG_V1,
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TCG_REG_A0,
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TCG_REG_A1,
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TCG_REG_A2,
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TCG_REG_A3,
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TCG_REG_T0,
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TCG_REG_T1,
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TCG_REG_T2,
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TCG_REG_T3,
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TCG_REG_T4,
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TCG_REG_T5,
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TCG_REG_T6,
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TCG_REG_T7,
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TCG_REG_S0,
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TCG_REG_S1,
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TCG_REG_S2,
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TCG_REG_S3,
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TCG_REG_S4,
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TCG_REG_S5,
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TCG_REG_S6,
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TCG_REG_S7,
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TCG_REG_T8,
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TCG_REG_T9,
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TCG_REG_K0,
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TCG_REG_K1,
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TCG_REG_GP,
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TCG_REG_SP,
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TCG_REG_FP,
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TCG_REG_RA,
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};
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#define TCG_CT_CONST_ZERO 0x100
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#define TCG_CT_CONST_U16 0x200
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#define TCG_CT_CONST_S16 0x400
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/* used for function call generation */
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#define TCG_REG_CALL_STACK TCG_REG_SP
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#define TCG_TARGET_STACK_ALIGN 8
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#define TCG_TARGET_CALL_STACK_OFFSET 16
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#define TCG_TARGET_CALL_ALIGN_ARGS 1
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/* optional instructions */
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#define TCG_TARGET_HAS_div_i32
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#define TCG_TARGET_HAS_not_i32
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#define TCG_TARGET_HAS_nor_i32
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#undef TCG_TARGET_HAS_rot_i32
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#define TCG_TARGET_HAS_ext8s_i32
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#define TCG_TARGET_HAS_ext16s_i32
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#undef TCG_TARGET_HAS_bswap32_i32
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#undef TCG_TARGET_HAS_bswap16_i32
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#undef TCG_TARGET_HAS_andc_i32
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#undef TCG_TARGET_HAS_orc_i32
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#undef TCG_TARGET_HAS_eqv_i32
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#undef TCG_TARGET_HAS_nand_i32
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/* optional instructions automatically implemented */
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#undef TCG_TARGET_HAS_neg_i32 /* sub rd, zero, rt */
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#undef TCG_TARGET_HAS_ext8u_i32 /* andi rt, rs, 0xff */
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#undef TCG_TARGET_HAS_ext16u_i32 /* andi rt, rs, 0xffff */
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/* Note: must be synced with dyngen-exec.h */
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#define TCG_AREG0 TCG_REG_S0
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/* guest base is supported */
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#define TCG_TARGET_HAS_GUEST_BASE
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#include <sys/cachectl.h>
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static inline void flush_icache_range(unsigned long start, unsigned long stop)
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{
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cacheflush ((void *)start, stop-start, ICACHE);
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}
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