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- #ifndef __SH2_H__
- #define __SH2_H__
- #if !defined(REGPARM) && defined(__i386__)
- #define REGPARM(x) __attribute__((regparm(x)))
- #else
- #define REGPARM(x)
- #endif
- // registers - matches structure order
- typedef enum {
- SHR_R0 = 0, SHR_SP = 15,
- SHR_PC, SHR_PPC, SHR_PR, SHR_SR,
- SHR_GBR, SHR_VBR, SHR_MACH, SHR_MACL,
- } sh2_reg_e;
- typedef struct SH2_
- {
- unsigned int r[16]; // 00
- unsigned int pc; // 40
- unsigned int ppc;
- unsigned int pr;
- unsigned int sr;
- unsigned int gbr, vbr; // 50
- unsigned int mach, macl; // 58
- // common
- const void *read8_map; // 60
- const void *read16_map;
- const void **write8_tab;
- const void **write16_tab;
- // drc stuff
- int drc_tmp; // 70
- int irq_cycles;
- void *p_bios; // convenience pointers
- void *p_da;
- void *p_sdram;
- void *p_rom;
- unsigned int pdb_io_csum[2];
- // interpreter stuff
- int icount; // cycles left in current timeslice
- unsigned int ea;
- unsigned int delay;
- unsigned int test_irq;
- int pending_level; // MAX(pending_irl, pending_int_irq)
- int pending_irl;
- int pending_int_irq; // internal irq
- int pending_int_vector;
- int REGPARM(2) (*irq_callback)(struct SH2_ *sh2, int level);
- int is_slave;
- unsigned int cycles_aim; // subtract sh2_icount to get global counter
- unsigned int cycles_done;
- } SH2;
- extern SH2 *sh2; // active sh2. XXX: consider removing
- int sh2_init(SH2 *sh2, int is_slave);
- void sh2_finish(SH2 *sh2);
- void sh2_reset(SH2 *sh2);
- void sh2_irl_irq(SH2 *sh2, int level);
- void sh2_internal_irq(SH2 *sh2, int level, int vector);
- void sh2_do_irq(SH2 *sh2, int level, int vector);
- void sh2_execute(SH2 *sh2, int cycles);
- // pico memhandlers
- // XXX: move somewhere else
- unsigned int REGPARM(2) p32x_sh2_read8(unsigned int a, SH2 *sh2);
- unsigned int REGPARM(2) p32x_sh2_read16(unsigned int a, SH2 *sh2);
- unsigned int REGPARM(2) p32x_sh2_read32(unsigned int a, SH2 *sh2);
- int REGPARM(3) p32x_sh2_write8 (unsigned int a, unsigned int d, SH2 *sh2);
- int REGPARM(3) p32x_sh2_write16(unsigned int a, unsigned int d, SH2 *sh2);
- int REGPARM(3) p32x_sh2_write32(unsigned int a, unsigned int d, SH2 *sh2);
- #endif /* __SH2_H__ */
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