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ARM emulation support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@244 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-06-15 20:05:50 +00:00
parent 5a9fdfec7e
commit b346ff468e
6 changed files with 231 additions and 30 deletions
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71
exec.h
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@ -18,6 +18,31 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* allow to see translation results - the slowdown should be negligible, so we leave it */
#define DEBUG_DISAS
/* is_jmp field values */
#define DISAS_NEXT 0 /* next instruction can be analyzed */
#define DISAS_JUMP 1 /* only pc was modified dynamically */
#define DISAS_UPDATE 2 /* cpu state was modified dynamically */
#define DISAS_TB_JUMP 3 /* only pc was modified statically */
struct TranslationBlock;
/* XXX: make safe guess about sizes */
#define MAX_OP_PER_INSTR 32
#define OPC_BUF_SIZE 512
#define OPC_MAX_SIZE (OPC_BUF_SIZE - MAX_OP_PER_INSTR)
#define OPPARAM_BUF_SIZE (OPC_BUF_SIZE * 3)
extern uint16_t gen_opc_buf[OPC_BUF_SIZE];
extern uint32_t gen_opparam_buf[OPPARAM_BUF_SIZE];
extern uint32_t gen_opc_pc[OPC_BUF_SIZE];
extern uint8_t gen_opc_instr_start[OPC_BUF_SIZE];
#if defined(TARGET_I386)
#define GEN_FLAG_CODE32_SHIFT 0
#define GEN_FLAG_ADDSEG_SHIFT 1
#define GEN_FLAG_SS32_SHIFT 2
@ -27,13 +52,18 @@
#define GEN_FLAG_CPL_SHIFT 9
#define GEN_FLAG_IOPL_SHIFT 12 /* same position as eflags */
struct TranslationBlock;
int cpu_x86_gen_code(struct TranslationBlock *tb,
int max_code_size, int *gen_code_size_ptr);
int cpu_x86_search_pc(struct TranslationBlock *tb,
uint32_t *found_pc, unsigned long searched_pc);
void cpu_x86_tblocks_init(void);
void page_init(void);
#endif
extern FILE *logfile;
extern int loglevel;
int gen_intermediate_code(struct TranslationBlock *tb, int search_pc);
void dump_ops(const uint16_t *opc_buf, const uint32_t *opparam_buf);
int cpu_gen_code(struct TranslationBlock *tb,
int max_code_size, int *gen_code_size_ptr);
int cpu_search_pc(struct TranslationBlock *tb,
uint32_t *found_pc, unsigned long searched_pc);
void cpu_exec_init(void);
int page_unprotect(unsigned long address);
#define CODE_GEN_MAX_SIZE 65536
@ -167,6 +197,33 @@ TranslationBlock *tb_find_pc(unsigned long pc_ptr);
#define offsetof(type, field) ((size_t) &((type *)0)->field)
#endif
#if defined(__powerpc__)
/* on PowerPC we patch the jump instruction directly */
#define JUMP_TB(tbparam, n, eip)\
do {\
static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
asm volatile ("b %0" : : "i" (&__op_jmp ## n));\
label ## n:\
T0 = (long)(tbparam) + (n);\
EIP = eip;\
} while (0)
#else
/* jump to next block operations (more portable code, does not need
cache flushing, but slower because of indirect jump) */
#define JUMP_TB(tbparam, n, eip)\
do {\
static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
goto *(void *)(((TranslationBlock *)tbparam)->tb_next[n]);\
label ## n:\
T0 = (long)(tbparam) + (n);\
EIP = eip;\
} while (0)
#endif
#ifdef __powerpc__
static inline int testandset (int *p)
{