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custom_ops.S
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custom_ops.S
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// This is free and unencumbered software released into the public domain.
//
// Anyone is free to copy, modify, publish, use, compile, sell, or
// distribute this software, either in source code form or as a compiled
// binary, for any purpose, commercial or non-commercial, and by any
// means.
#define regnum_q0 0
#define regnum_q1 1
#define regnum_q2 2
#define regnum_q3 3
#define regnum_x0 0
#define regnum_x1 1
#define regnum_x2 2
#define regnum_x3 3
#define regnum_x4 4
#define regnum_x5 5
#define regnum_x6 6
#define regnum_x7 7
#define regnum_x8 8
#define regnum_x9 9
#define regnum_x10 10
#define regnum_x11 11
#define regnum_x12 12
#define regnum_x13 13
#define regnum_x14 14
#define regnum_x15 15
#define regnum_x16 16
#define regnum_x17 17
#define regnum_x18 18
#define regnum_x19 19
#define regnum_x20 20
#define regnum_x21 21
#define regnum_x22 22
#define regnum_x23 23
#define regnum_x24 24
#define regnum_x25 25
#define regnum_x26 26
#define regnum_x27 27
#define regnum_x28 28
#define regnum_x29 29
#define regnum_x30 30
#define regnum_x31 31
#define regnum_zero 0
#define regnum_ra 1
#define regnum_sp 2
#define regnum_gp 3
#define regnum_tp 4
#define regnum_t0 5
#define regnum_t1 6
#define regnum_t2 7
#define regnum_s0 8
#define regnum_s1 9
#define regnum_a0 10
#define regnum_a1 11
#define regnum_a2 12
#define regnum_a3 13
#define regnum_a4 14
#define regnum_a5 15
#define regnum_a6 16
#define regnum_a7 17
#define regnum_s2 18
#define regnum_s3 19
#define regnum_s4 20
#define regnum_s5 21
#define regnum_s6 22
#define regnum_s7 23
#define regnum_s8 24
#define regnum_s9 25
#define regnum_s10 26
#define regnum_s11 27
#define regnum_t3 28
#define regnum_t4 29
#define regnum_t5 30
#define regnum_t6 31
// x8 is s0 and also fp
#define regnum_fp 8
#define r_type_insn(_f7, _rs2, _rs1, _f3, _rd, _opc) \
.word (((_f7) << 25) | ((_rs2) << 20) | ((_rs1) << 15) | ((_f3) << 12) | ((_rd) << 7) | ((_opc) << 0))
#define picorv32_getq_insn(_rd, _qs) \
r_type_insn(0b0000000, 0, regnum_ ## _qs, 0b100, regnum_ ## _rd, 0b0001011)
#define picorv32_setq_insn(_qd, _rs) \
r_type_insn(0b0000001, 0, regnum_ ## _rs, 0b010, regnum_ ## _qd, 0b0001011)
#define picorv32_retirq_insn() \
r_type_insn(0b0000010, 0, 0, 0b000, 0, 0b0001011)
#define picorv32_maskirq_insn(_rd, _rs) \
r_type_insn(0b0000011, 0, regnum_ ## _rs, 0b110, regnum_ ## _rd, 0b0001011)
#define picorv32_waitirq_insn(_rd) \
r_type_insn(0b0000100, 0, 0, 0b100, regnum_ ## _rd, 0b0001011)
#define picorv32_timer_insn(_rd, _rs) \
r_type_insn(0b0000101, 0, regnum_ ## _rs, 0b110, regnum_ ## _rd, 0b0001011)