From d0a9bb5ecb85383198fb416bb8ecfd11127e6452 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 27 Mar 2023 16:07:15 -0700 Subject: tcg: Add tlb_fast_offset to TCGContext MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Disconnect the layout of ArchCPU from TCG compilation. Pass the relative offset of 'env' and 'neg.tlb.f' as a parameter. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- include/exec/cpu-defs.h | 39 +-------------------------------- include/exec/tlb-common.h | 56 +++++++++++++++++++++++++++++++++++++++++++++++ include/tcg/tcg.h | 1 + 3 files changed, 58 insertions(+), 38 deletions(-) create mode 100644 include/exec/tlb-common.h (limited to 'include') diff --git a/include/exec/cpu-defs.h b/include/exec/cpu-defs.h index b757d37966..0d418a0384 100644 --- a/include/exec/cpu-defs.h +++ b/include/exec/cpu-defs.h @@ -61,12 +61,11 @@ #define NB_MMU_MODES 16 #if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG) +#include "exec/tlb-common.h" /* use a fully associative victim tlb of 8 entries */ #define CPU_VTLB_SIZE 8 -#define CPU_TLB_ENTRY_BITS 5 - #define CPU_TLB_DYN_MIN_BITS 6 #define CPU_TLB_DYN_DEFAULT_BITS 8 @@ -90,27 +89,6 @@ # endif # endif -/* Minimalized TLB entry for use by TCG fast path. */ -typedef union CPUTLBEntry { - struct { - uint64_t addr_read; - uint64_t addr_write; - uint64_t addr_code; - /* - * Addend to virtual address to get host address. IO accesses - * use the corresponding iotlb value. - */ - uintptr_t addend; - }; - /* - * Padding to get a power of two size, as well as index - * access to addr_{read,write,code}. - */ - uint64_t addr_idx[(1 << CPU_TLB_ENTRY_BITS) / sizeof(uint64_t)]; -} CPUTLBEntry; - -QEMU_BUILD_BUG_ON(sizeof(CPUTLBEntry) != (1 << CPU_TLB_ENTRY_BITS)); - #endif /* !CONFIG_USER_ONLY && CONFIG_TCG */ #if !defined(CONFIG_USER_ONLY) @@ -184,17 +162,6 @@ typedef struct CPUTLBDesc { CPUTLBEntryFull *fulltlb; } CPUTLBDesc; -/* - * Data elements that are per MMU mode, accessed by the fast path. - * The structure is aligned to aid loading the pair with one insn. - */ -typedef struct CPUTLBDescFast { - /* Contains (n_entries - 1) << CPU_TLB_ENTRY_BITS */ - uintptr_t mask; - /* The array of tlb entries itself. */ - CPUTLBEntry *table; -} CPUTLBDescFast QEMU_ALIGNED(2 * sizeof(void *)); - /* * Data elements that are shared between all MMU modes. */ @@ -230,10 +197,6 @@ typedef struct CPUTLB { CPUTLBDescFast f[NB_MMU_MODES]; } CPUTLB; -/* This will be used by TCG backends to compute offsets. */ -#define TLB_MASK_TABLE_OFS(IDX) \ - ((int)offsetof(ArchCPU, neg.tlb.f[IDX]) - (int)offsetof(ArchCPU, env)) - #else typedef struct CPUTLB { } CPUTLB; diff --git a/include/exec/tlb-common.h b/include/exec/tlb-common.h new file mode 100644 index 0000000000..dc5a5faa0b --- /dev/null +++ b/include/exec/tlb-common.h @@ -0,0 +1,56 @@ +/* + * Common definitions for the softmmu tlb + * + * 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 2.1 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, see . + */ +#ifndef EXEC_TLB_COMMON_H +#define EXEC_TLB_COMMON_H 1 + +#define CPU_TLB_ENTRY_BITS 5 + +/* Minimalized TLB entry for use by TCG fast path. */ +typedef union CPUTLBEntry { + struct { + uint64_t addr_read; + uint64_t addr_write; + uint64_t addr_code; + /* + * Addend to virtual address to get host address. IO accesses + * use the corresponding iotlb value. + */ + uintptr_t addend; + }; + /* + * Padding to get a power of two size, as well as index + * access to addr_{read,write,code}. + */ + uint64_t addr_idx[(1 << CPU_TLB_ENTRY_BITS) / sizeof(uint64_t)]; +} CPUTLBEntry; + +QEMU_BUILD_BUG_ON(sizeof(CPUTLBEntry) != (1 << CPU_TLB_ENTRY_BITS)); + +/* + * Data elements that are per MMU mode, accessed by the fast path. + * The structure is aligned to aid loading the pair with one insn. + */ +typedef struct CPUTLBDescFast { + /* Contains (n_entries - 1) << CPU_TLB_ENTRY_BITS */ + uintptr_t mask; + /* The array of tlb entries itself. */ + CPUTLBEntry *table; +} CPUTLBDescFast QEMU_ALIGNED(2 * sizeof(void *)); + +#endif /* EXEC_TLB_COMMON_H */ diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h index 0da17f1b4f..54f260a66b 100644 --- a/include/tcg/tcg.h +++ b/include/tcg/tcg.h @@ -547,6 +547,7 @@ struct TCGContext { TCGType addr_type; /* TCG_TYPE_I32 or TCG_TYPE_I64 */ #ifdef CONFIG_SOFTMMU + int tlb_fast_offset; int page_mask; uint8_t page_bits; uint8_t tlb_dyn_max_bits; -- cgit v1.2.3