1 int sh2_drc_init(SH2 *sh2);
2 void sh2_drc_finish(SH2 *sh2);
3 void sh2_drc_wcheck_ram(u32 a, unsigned len, SH2 *sh2);
4 void sh2_drc_wcheck_da(u32 a, unsigned len, SH2 *sh2);
7 void sh2_drc_mem_setup(SH2 *sh2);
8 void sh2_drc_flush_all(void);
10 #define sh2_drc_mem_setup(x)
11 #define sh2_drc_flush_all()
12 #define sh2_drc_frame()
15 #define BLOCK_INSN_LIMIT 1024
18 #define OF_DELAY_OP (1 << 0)
19 #define OF_BTARGET (1 << 1)
20 #define OF_LOOP (3 << 2) // NONE, IDLE, DELAY, POLL loop
21 #define OF_B_IN_DS (1 << 4)
22 #define OF_DELAY_INSN (1 << 5) // DT, (TODO ADD+CMP?)
23 #define OF_POLL_INSN (1 << 6) // MOV @(...),Rn (no post increment), TST @(...)
24 #define OF_BASIC_LOOP (1 << 7) // pinnable loop without any branches in it
26 #define OF_IDLE_LOOP (1 << 2)
27 #define OF_DELAY_LOOP (2 << 2)
28 #define OF_POLL_LOOP (3 << 2)
30 u16 scan_block(u32 base_pc, int is_slave, u8 *op_flags, u32 *end_pc,
31 u32 *base_literals, u32 *end_literals);
33 #if defined(DRC_SH2) && defined(__GNUC__) && !defined(__clang__)
34 // direct access to some host CPU registers used by the DRC if gcc is used.
35 // XXX MUST match SHR_SR definitions in cpu/drc/emit_*.c; should be moved there
36 // XXX yuck, there's no portable way to determine register size. Use long long
37 // if target is 64 bit and data model is ILP32 or LLP64(windows), else long
39 #define DRC_SR_REG "r10"
40 #define DRC_REG_LL 0 // 32 bit
41 #elif defined(__aarch64__)
42 #define DRC_SR_REG "r28"
43 #define DRC_REG_LL (__ILP32__ || _WIN32)
44 #elif defined(__mips__)
45 #define DRC_SR_REG "s6"
46 #define DRC_REG_LL (_MIPS_SZPTR > _MIPS_SZLONG) // (_MIPS_SIM == _ABIN32)
47 #elif defined(__riscv__) || defined(__riscv)
48 #define DRC_SR_REG "s11"
49 #define DRC_REG_LL 0 // no ABI for (__ILP32__ && __riscv_xlen != 32)
50 #elif defined(__powerpc__) || defined(__ppc__) || defined(__PPC__)
51 #define DRC_SR_REG "r28"
52 #define DRC_REG_LL 0 // no ABI for __ILP32__
53 //i386 only has 8 registers and reserving one of them causes too much spilling
54 //#elif defined(__i386__)
55 //#define DRC_SR_REG "edi"
56 //#define DRC_REG_LL 0 // 32 bit
57 #elif defined(__x86_64__)
58 #define DRC_SR_REG "rbx"
59 #define DRC_REG_LL (__ILP32__ || _WIN32)
64 // XXX this is more clear but produces too much overhead for slow platforms
65 extern void REGPARM(1) (*sh2_drc_save_sr)(SH2 *sh2);
66 extern void REGPARM(1) (*sh2_drc_restore_sr)(SH2 *sh2);
68 // NB: sh2_sr MUST have register size if optimizing with -O3 (-fif-conversion)
70 #define DRC_DECLARE_SR register long long _sh2_sr asm(DRC_SR_REG)
72 #define DRC_DECLARE_SR register long _sh2_sr asm(DRC_SR_REG)
74 // NB: save/load SR register only when DRC is executing and not in DMA access
75 #define DRC_SAVE_SR(sh2) \
76 if (likely((sh2->state & (SH2_IN_DRC|SH2_STATE_SLEEP)) == SH2_IN_DRC)) \
77 sh2->sr = (s32)_sh2_sr
78 // host_call(sh2_drc_save_sr, (SH2 *))(sh2)
79 #define DRC_RESTORE_SR(sh2) \
80 if (likely((sh2->state & (SH2_IN_DRC|SH2_STATE_SLEEP)) == SH2_IN_DRC)) \
81 _sh2_sr = (s32)sh2->sr
82 // host_call(sh2_drc_restore_sr, (SH2 *))(sh2)
84 #define DRC_DECLARE_SR
85 #define DRC_SAVE_SR(sh2)
86 #define DRC_RESTORE_SR(sh2)