filename | src/sh4/sh4trans.h |
changeset | 905:4c17ebd9ef5e |
prev | 835:2381ddfd3fdd |
next | 926:68f3e0fe02f1 |
author | nkeynes |
date | Thu Oct 30 00:06:49 2008 +0000 (15 years ago) |
permissions | -rw-r--r-- |
last change | Change xlat_get_native_pc to pass in the expected code region - this lets the Mac unwind implementation range test the IP address (which works) rather than EBP (which doesn't for some reason). Remove the test in configure that prevents fomit-frame-pointer being used in Mac builds. |
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nkeynes@359 | 1 | /** |
nkeynes@586 | 2 | * $Id$ |
nkeynes@359 | 3 | * |
nkeynes@359 | 4 | * SH4->x86 translation module |
nkeynes@359 | 5 | * |
nkeynes@359 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@359 | 7 | * |
nkeynes@359 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@359 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@359 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@359 | 11 | * (at your option) any later version. |
nkeynes@359 | 12 | * |
nkeynes@359 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@359 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@359 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@359 | 16 | * GNU General Public License for more details. |
nkeynes@359 | 17 | */ |
nkeynes@359 | 18 | |
nkeynes@736 | 19 | #ifndef lxdream_sh4trans_H |
nkeynes@736 | 20 | #define lxdream_sh4trans_H 1 |
nkeynes@736 | 21 | |
nkeynes@586 | 22 | #include "sh4/xltcache.h" |
nkeynes@359 | 23 | #include "dream.h" |
nkeynes@359 | 24 | #include "mem.h" |
nkeynes@359 | 25 | |
nkeynes@736 | 26 | #ifdef __cplusplus |
nkeynes@736 | 27 | extern "C" { |
nkeynes@736 | 28 | #endif |
nkeynes@736 | 29 | |
nkeynes@707 | 30 | /** Maximum size of a translated instruction, in bytes. Current worst case seems |
nkeynes@707 | 31 | * to be a BF/S followed by one of the long FMOVs. |
nkeynes@359 | 32 | */ |
nkeynes@835 | 33 | #define MAX_INSTRUCTION_SIZE 512 |
nkeynes@410 | 34 | /** Maximum size of the translation epilogue (current real size is 116 bytes, so |
nkeynes@410 | 35 | * allows a little room |
nkeynes@410 | 36 | */ |
nkeynes@410 | 37 | #define EPILOGUE_SIZE 128 |
nkeynes@586 | 38 | |
nkeynes@586 | 39 | /** Maximum number of recovery records for a translated block (2048 based on |
nkeynes@586 | 40 | * 1 record per SH4 instruction in a 4K page). |
nkeynes@586 | 41 | */ |
nkeynes@733 | 42 | #define MAX_RECOVERY_SIZE 2049 |
nkeynes@586 | 43 | |
nkeynes@359 | 44 | /** |
nkeynes@359 | 45 | */ |
nkeynes@359 | 46 | uint32_t sh4_xlat_run_slice( uint32_t nanosecs ); |
nkeynes@359 | 47 | |
nkeynes@359 | 48 | /** |
nkeynes@586 | 49 | * Return true if translated code is currently running |
nkeynes@586 | 50 | */ |
nkeynes@586 | 51 | gboolean sh4_xlat_is_running(); |
nkeynes@586 | 52 | |
nkeynes@586 | 53 | /** |
nkeynes@669 | 54 | * Initialize the translation engine (if required). Note xlat cache |
nkeynes@669 | 55 | * must already be initialized. |
nkeynes@669 | 56 | */ |
nkeynes@669 | 57 | void sh4_xlat_init(); |
nkeynes@669 | 58 | |
nkeynes@669 | 59 | /** |
nkeynes@359 | 60 | * Translate the specified block of code starting from the specified start |
nkeynes@359 | 61 | * address until the first branch/jump instruction. |
nkeynes@359 | 62 | */ |
nkeynes@359 | 63 | void *sh4_translate_basic_block( sh4addr_t start ); |
nkeynes@359 | 64 | |
nkeynes@669 | 65 | /** |
nkeynes@669 | 66 | * Add a recovery record for the current code generation position, with the |
nkeynes@669 | 67 | * specified instruction count |
nkeynes@669 | 68 | */ |
nkeynes@669 | 69 | void sh4_translate_add_recovery( uint32_t icount ); |
nkeynes@586 | 70 | |
nkeynes@359 | 71 | extern uint8_t *xlat_output; |
nkeynes@586 | 72 | extern struct xlat_recovery_record xlat_recovery[MAX_RECOVERY_SIZE]; |
nkeynes@604 | 73 | extern xlat_cache_block_t xlat_current_block; |
nkeynes@586 | 74 | extern uint32_t xlat_recovery_posn; |
nkeynes@359 | 75 | |
nkeynes@526 | 76 | /****************************************************************************** |
nkeynes@526 | 77 | * Code generation - these methods must be provided by the |
nkeynes@526 | 78 | * actual code gen (eg sh4x86.c) |
nkeynes@526 | 79 | ******************************************************************************/ |
nkeynes@359 | 80 | |
nkeynes@527 | 81 | #define TARGET_X86 1 |
nkeynes@527 | 82 | |
nkeynes@669 | 83 | void sh4_translate_init( void ); |
nkeynes@408 | 84 | void sh4_translate_begin_block( sh4addr_t pc ); |
nkeynes@526 | 85 | uint32_t sh4_translate_instruction( sh4addr_t pc ); |
nkeynes@359 | 86 | void sh4_translate_end_block( sh4addr_t pc ); |
nkeynes@593 | 87 | uint32_t sh4_translate_end_block_size(); |
nkeynes@669 | 88 | void sh4_translate_emit_breakpoint( sh4vma_t pc ); |
nkeynes@586 | 89 | |
nkeynes@586 | 90 | typedef void (*unwind_thunk_t)(void); |
nkeynes@586 | 91 | |
nkeynes@586 | 92 | /** |
nkeynes@586 | 93 | * From within the translator, (typically called from MMU exception handling routines) |
nkeynes@586 | 94 | * immediately exit the current translation block (performing cleanup as necessary) and |
nkeynes@586 | 95 | * return to sh4_xlat_run_slice(). Effectively a fast longjmp w/ xlat recovery. |
nkeynes@586 | 96 | * |
nkeynes@586 | 97 | * Note: The correct working of this method depends on the translator anticipating the |
nkeynes@586 | 98 | * exception and generating the appropriate recovery block(s) - currently this means |
nkeynes@586 | 99 | * that it should ONLY be called from within the context of a memory read or write. |
nkeynes@586 | 100 | * |
nkeynes@586 | 101 | * @param is_completion If TRUE, exit after completing the current instruction (effectively), |
nkeynes@586 | 102 | * otherwise abort the current instruction with no effect. |
nkeynes@586 | 103 | * @param thunk A function to execute after perform xlat recovery, but before returning |
nkeynes@586 | 104 | * to run_slice. If NULL, control returns directly. |
nkeynes@586 | 105 | * @return This method never returns. |
nkeynes@586 | 106 | */ |
nkeynes@586 | 107 | void sh4_translate_unwind_stack( gboolean is_completion, unwind_thunk_t thunk ); |
nkeynes@586 | 108 | |
nkeynes@586 | 109 | /** |
nkeynes@740 | 110 | * Called when doing a break out of the translator - finalizes the system state up to |
nkeynes@740 | 111 | * the end of the current instruction. |
nkeynes@586 | 112 | */ |
nkeynes@740 | 113 | void sh4_translate_exit_recover( ); |
nkeynes@591 | 114 | |
nkeynes@591 | 115 | /** |
nkeynes@669 | 116 | * From within the translator, exit the current block at the end of the |
nkeynes@740 | 117 | * current instruction, flush the translation cache (completely) |
nkeynes@740 | 118 | * @return TRUE to perform a vm-exit/continue after the flush |
nkeynes@669 | 119 | */ |
nkeynes@740 | 120 | gboolean sh4_translate_flush_cache( void ); |
nkeynes@669 | 121 | |
nkeynes@669 | 122 | /** |
nkeynes@591 | 123 | * Support function called from the translator when a breakpoint is hit. |
nkeynes@591 | 124 | * Either returns immediately (to skip the breakpoint), or aborts the current |
nkeynes@591 | 125 | * cycle and never returns. |
nkeynes@591 | 126 | */ |
nkeynes@905 | 127 | void FASTCALL sh4_translate_breakpoint_hit( sh4vma_t pc ); |
nkeynes@736 | 128 | |
nkeynes@736 | 129 | #ifdef __cplusplus |
nkeynes@736 | 130 | } |
nkeynes@736 | 131 | #endif |
nkeynes@736 | 132 | |
nkeynes@760 | 133 | #endif /* !lxdream_sh4trans_H */ |
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