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https://github.com/RaySollium99/picodrive.git
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f4bb5d6b2c
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@820 be3aeb3a-fb24-0410-a615-afba39da0efa
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
#ifndef __SH2_H__
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#define __SH2_H__
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typedef struct
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{
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unsigned int r[16]; // 00
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unsigned int pc; // 40
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unsigned int ppc;
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unsigned int pr;
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unsigned int sr;
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unsigned int gbr, vbr; // 50
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unsigned int mach, macl; // 58
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// interpreter stuff
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int icount; // 60 cycles left in current timeslice
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unsigned int ea;
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unsigned int delay;
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unsigned int test_irq;
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// common
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const void *read8_map; // 70
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const void *read16_map;
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const void **write8_tab;
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const void **write16_tab;
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// drc stuff
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//void **pc_hashtab; // 80
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int pending_level; // MAX(pending_irl, pending_int_irq)
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int pending_irl;
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int pending_int_irq; // internal irq
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int pending_int_vector;
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void (*irq_callback)(int id, int level);
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int is_slave;
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unsigned int cycles_aim; // subtract sh2_icount to get global counter
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unsigned int cycles_done;
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} SH2;
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extern SH2 *sh2; // active sh2
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int sh2_init(SH2 *sh2, int is_slave);
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void sh2_finish(SH2 *sh2);
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void sh2_reset(SH2 *sh2);
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void sh2_irl_irq(SH2 *sh2, int level);
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void sh2_internal_irq(SH2 *sh2, int level, int vector);
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void sh2_do_irq(SH2 *sh2, int level, int vector);
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void sh2_execute(SH2 *sh2, int cycles);
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// pico memhandlers
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// XXX: move somewhere else
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unsigned int p32x_sh2_read8(unsigned int a, SH2 *sh2);
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unsigned int p32x_sh2_read16(unsigned int a, SH2 *sh2);
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unsigned int p32x_sh2_read32(unsigned int a, SH2 *sh2);
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void p32x_sh2_write8(unsigned int a, unsigned int d, SH2 *sh2);
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void p32x_sh2_write16(unsigned int a, unsigned int d, SH2 *sh2);
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void p32x_sh2_write32(unsigned int a, unsigned int d, SH2 *sh2);
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#endif /* __SH2_H__ */
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