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cebix |
1.1 |
/* |
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* UAE - The Un*x Amiga Emulator |
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* |
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* m68k -> i386 compiler |
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* |
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* (c) 1995 Bernd Schmidt |
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*/ |
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typedef uaecptr (*code_execfunc)(void); |
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struct code_page { |
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struct code_page *next; |
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uae_u32 allocmask; |
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}; |
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struct hash_block { |
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struct hash_block *lru_next, *lru_prev; |
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struct hash_entry *he_first; |
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struct code_page *cpage; |
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int alloclen; |
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uae_u32 page_allocmask; |
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char *compile_start; |
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int nrefs; |
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int translated:1; |
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int untranslatable:1; |
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int allocfailed:1; |
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}; |
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struct hash_entry { |
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code_execfunc execute; /* For the sake of the stubs in X86.S */ |
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struct hash_entry *next,*prev; |
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struct hash_entry *next_same_block, *lru_next, *lru_prev; |
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struct hash_block *block; |
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uaecptr addr; |
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uae_u32 matchword; |
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int ncalls:8; |
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int locked:1; |
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int cacheflush:1; |
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}; |
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extern int nr_bbs_start; |
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extern uae_u8 nr_bbs_to_run; |
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extern code_execfunc exec_me; |
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#ifdef USE_COMPILER |
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static __inline__ void run_compiled_code(void) |
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{ |
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/*if (regs.spcflags == SPCFLAG_EXEC && may_run_compiled) {*/ |
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while (regs.spcflags == SPCFLAG_EXEC) { |
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uaecptr newpc; |
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regs.spcflags = 0; |
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/* newpc = (*exec_me)();*/ |
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__asm__ __volatile__ ("pushl %%ebp; call *%1; popl %%ebp" : "=a" (newpc) : "r" (exec_me) : |
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"%eax", "%edx", "%ecx", "%ebx", |
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"%edi", "%esi", "memory", "cc"); |
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if (nr_bbs_to_run == 0) { |
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struct hash_entry *h = (struct hash_entry *)newpc; |
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regs.spcflags = SPCFLAG_EXEC; |
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exec_me = h->execute; |
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regs.pc = h->addr; |
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regs.pc_p = regs.pc_oldp = get_real_address(h->addr); |
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nr_bbs_to_run = nr_bbs_start; |
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} else |
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m68k_setpc_fast(newpc); |
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} |
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/*} else */ |
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regs.spcflags &= ~SPCFLAG_EXEC; |
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} |
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extern void compiler_init(void); |
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extern void possible_loadseg(void); |
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extern void m68k_do_rts(void); |
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extern void m68k_do_bsr(uaecptr, uae_s32); |
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extern void m68k_do_jsr(uaecptr, uaecptr); |
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extern void compiler_flush_jsr_stack(void); |
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#else |
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#define run_compiled_code() do { ; } while (0) |
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#define compiler_init() do { ; } while (0) |
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#define possible_loadseg() do { ; } while (0) |
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#define compiler_flush_jsr_stack() do { ; } while (0) |
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static __inline__ void m68k_do_rts(void) |
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{ |
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m68k_setpc(get_long(m68k_areg(regs, 7))); |
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m68k_areg(regs, 7) += 4; |
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} |
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static __inline__ void m68k_do_bsr(uaecptr oldpc, uae_s32 offset) |
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{ |
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m68k_areg(regs, 7) -= 4; |
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put_long(m68k_areg(regs, 7), oldpc); |
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m68k_incpc(offset); |
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} |
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static __inline__ void m68k_do_jsr(uaecptr oldpc, uaecptr dest) |
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{ |
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m68k_areg(regs, 7) -= 4; |
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put_long(m68k_areg(regs, 7), oldpc); |
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m68k_setpc(dest); |
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} |
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#endif |
