From 413f05aaf54fa08c0ae7e997327a4f4a473c0a8d Mon Sep 17 00:00:00 2001 From: Upstream Date: Mon, 12 Jan 1970 13:46:40 +0000 Subject: external/qemu 0.8.2 --- softmmu_template.h | 313 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 313 insertions(+) create mode 100644 softmmu_template.h (limited to 'softmmu_template.h') diff --git a/softmmu_template.h b/softmmu_template.h new file mode 100644 index 0000000..1c12c42 --- /dev/null +++ b/softmmu_template.h @@ -0,0 +1,313 @@ +/* + * Software MMU support + * + * Copyright (c) 2003 Fabrice Bellard + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#define DATA_SIZE (1 << SHIFT) + +#if DATA_SIZE == 8 +#define SUFFIX q +#define USUFFIX q +#define DATA_TYPE uint64_t +#elif DATA_SIZE == 4 +#define SUFFIX l +#define USUFFIX l +#define DATA_TYPE uint32_t +#elif DATA_SIZE == 2 +#define SUFFIX w +#define USUFFIX uw +#define DATA_TYPE uint16_t +#elif DATA_SIZE == 1 +#define SUFFIX b +#define USUFFIX ub +#define DATA_TYPE uint8_t +#else +#error unsupported data size +#endif + +#ifdef SOFTMMU_CODE_ACCESS +#define READ_ACCESS_TYPE 2 +#define ADDR_READ addr_code +#else +#define READ_ACCESS_TYPE 0 +#define ADDR_READ addr_read +#endif + +static DATA_TYPE glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(target_ulong addr, + int is_user, + void *retaddr); +static inline DATA_TYPE glue(io_read, SUFFIX)(target_phys_addr_t physaddr, + target_ulong tlb_addr) +{ + DATA_TYPE res; + int index; + + index = (tlb_addr >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); +#if SHIFT <= 2 + res = io_mem_read[index][SHIFT](io_mem_opaque[index], physaddr); +#else +#ifdef TARGET_WORDS_BIGENDIAN + res = (uint64_t)io_mem_read[index][2](io_mem_opaque[index], physaddr) << 32; + res |= io_mem_read[index][2](io_mem_opaque[index], physaddr + 4); +#else + res = io_mem_read[index][2](io_mem_opaque[index], physaddr); + res |= (uint64_t)io_mem_read[index][2](io_mem_opaque[index], physaddr + 4) << 32; +#endif +#endif /* SHIFT > 2 */ +#ifdef USE_KQEMU + env->last_io_time = cpu_get_time_fast(); +#endif + return res; +} + +/* handle all cases except unaligned access which span two pages */ +DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr, + int is_user) +{ + DATA_TYPE res; + int index; + target_ulong tlb_addr; + target_phys_addr_t physaddr; + void *retaddr; + + /* test if there is match for unaligned or IO access */ + /* XXX: could done more in memory macro in a non portable way */ + index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); + redo: + tlb_addr = env->tlb_table[is_user][index].ADDR_READ; + if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { + physaddr = addr + env->tlb_table[is_user][index].addend; + if (tlb_addr & ~TARGET_PAGE_MASK) { + /* IO access */ + if ((addr & (DATA_SIZE - 1)) != 0) + goto do_unaligned_access; + res = glue(io_read, SUFFIX)(physaddr, tlb_addr); + } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) { + /* slow unaligned access (it spans two pages or IO) */ + do_unaligned_access: + retaddr = GETPC(); +#ifdef ALIGNED_ONLY + do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr); +#endif + res = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr, + is_user, retaddr); + } else { + /* unaligned/aligned access in the same page */ +#ifdef ALIGNED_ONLY + if ((addr & (DATA_SIZE - 1)) != 0) { + retaddr = GETPC(); + do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr); + } +#endif + res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)physaddr); + } + } else { + /* the page is not in the TLB : fill it */ + retaddr = GETPC(); +#ifdef ALIGNED_ONLY + if ((addr & (DATA_SIZE - 1)) != 0) + do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr); +#endif + tlb_fill(addr, READ_ACCESS_TYPE, is_user, retaddr); + goto redo; + } + return res; +} + +/* handle all unaligned cases */ +static DATA_TYPE glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(target_ulong addr, + int is_user, + void *retaddr) +{ + DATA_TYPE res, res1, res2; + int index, shift; + target_phys_addr_t physaddr; + target_ulong tlb_addr, addr1, addr2; + + index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); + redo: + tlb_addr = env->tlb_table[is_user][index].ADDR_READ; + if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { + physaddr = addr + env->tlb_table[is_user][index].addend; + if (tlb_addr & ~TARGET_PAGE_MASK) { + /* IO access */ + if ((addr & (DATA_SIZE - 1)) != 0) + goto do_unaligned_access; + res = glue(io_read, SUFFIX)(physaddr, tlb_addr); + } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) { + do_unaligned_access: + /* slow unaligned access (it spans two pages) */ + addr1 = addr & ~(DATA_SIZE - 1); + addr2 = addr1 + DATA_SIZE; + res1 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr1, + is_user, retaddr); + res2 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr2, + is_user, retaddr); + shift = (addr & (DATA_SIZE - 1)) * 8; +#ifdef TARGET_WORDS_BIGENDIAN + res = (res1 << shift) | (res2 >> ((DATA_SIZE * 8) - shift)); +#else + res = (res1 >> shift) | (res2 << ((DATA_SIZE * 8) - shift)); +#endif + res = (DATA_TYPE)res; + } else { + /* unaligned/aligned access in the same page */ + res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)physaddr); + } + } else { + /* the page is not in the TLB : fill it */ + tlb_fill(addr, READ_ACCESS_TYPE, is_user, retaddr); + goto redo; + } + return res; +} + +#ifndef SOFTMMU_CODE_ACCESS + +static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(target_ulong addr, + DATA_TYPE val, + int is_user, + void *retaddr); + +static inline void glue(io_write, SUFFIX)(target_phys_addr_t physaddr, + DATA_TYPE val, + target_ulong tlb_addr, + void *retaddr) +{ + int index; + + index = (tlb_addr >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); + env->mem_write_vaddr = tlb_addr; + env->mem_write_pc = (unsigned long)retaddr; +#if SHIFT <= 2 + io_mem_write[index][SHIFT](io_mem_opaque[index], physaddr, val); +#else +#ifdef TARGET_WORDS_BIGENDIAN + io_mem_write[index][2](io_mem_opaque[index], physaddr, val >> 32); + io_mem_write[index][2](io_mem_opaque[index], physaddr + 4, val); +#else + io_mem_write[index][2](io_mem_opaque[index], physaddr, val); + io_mem_write[index][2](io_mem_opaque[index], physaddr + 4, val >> 32); +#endif +#endif /* SHIFT > 2 */ +#ifdef USE_KQEMU + env->last_io_time = cpu_get_time_fast(); +#endif +} + +void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr, + DATA_TYPE val, + int is_user) +{ + target_phys_addr_t physaddr; + target_ulong tlb_addr; + void *retaddr; + int index; + + index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); + redo: + tlb_addr = env->tlb_table[is_user][index].addr_write; + if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { + physaddr = addr + env->tlb_table[is_user][index].addend; + if (tlb_addr & ~TARGET_PAGE_MASK) { + /* IO access */ + if ((addr & (DATA_SIZE - 1)) != 0) + goto do_unaligned_access; + retaddr = GETPC(); + glue(io_write, SUFFIX)(physaddr, val, tlb_addr, retaddr); + } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) { + do_unaligned_access: + retaddr = GETPC(); +#ifdef ALIGNED_ONLY + do_unaligned_access(addr, 1, is_user, retaddr); +#endif + glue(glue(slow_st, SUFFIX), MMUSUFFIX)(addr, val, + is_user, retaddr); + } else { + /* aligned/unaligned access in the same page */ +#ifdef ALIGNED_ONLY + if ((addr & (DATA_SIZE - 1)) != 0) { + retaddr = GETPC(); + do_unaligned_access(addr, 1, is_user, retaddr); + } +#endif + glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)physaddr, val); + } + } else { + /* the page is not in the TLB : fill it */ + retaddr = GETPC(); +#ifdef ALIGNED_ONLY + if ((addr & (DATA_SIZE - 1)) != 0) + do_unaligned_access(addr, 1, is_user, retaddr); +#endif + tlb_fill(addr, 1, is_user, retaddr); + goto redo; + } +} + +/* handles all unaligned cases */ +static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(target_ulong addr, + DATA_TYPE val, + int is_user, + void *retaddr) +{ + target_phys_addr_t physaddr; + target_ulong tlb_addr; + int index, i; + + index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); + redo: + tlb_addr = env->tlb_table[is_user][index].addr_write; + if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { + physaddr = addr + env->tlb_table[is_user][index].addend; + if (tlb_addr & ~TARGET_PAGE_MASK) { + /* IO access */ + if ((addr & (DATA_SIZE - 1)) != 0) + goto do_unaligned_access; + glue(io_write, SUFFIX)(physaddr, val, tlb_addr, retaddr); + } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) { + do_unaligned_access: + /* XXX: not efficient, but simple */ + for(i = 0;i < DATA_SIZE; i++) { +#ifdef TARGET_WORDS_BIGENDIAN + glue(slow_stb, MMUSUFFIX)(addr + i, val >> (((DATA_SIZE - 1) * 8) - (i * 8)), + is_user, retaddr); +#else + glue(slow_stb, MMUSUFFIX)(addr + i, val >> (i * 8), + is_user, retaddr); +#endif + } + } else { + /* aligned/unaligned access in the same page */ + glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)physaddr, val); + } + } else { + /* the page is not in the TLB : fill it */ + tlb_fill(addr, 1, is_user, retaddr); + goto redo; + } +} + +#endif /* !defined(SOFTMMU_CODE_ACCESS) */ + +#undef READ_ACCESS_TYPE +#undef SHIFT +#undef DATA_TYPE +#undef SUFFIX +#undef USUFFIX +#undef DATA_SIZE +#undef ADDR_READ -- cgit v1.1