2 **************************************************
4 * Automatically generated file, do not edit! *
6 **************************************************
8 .. _amdgpu_synid_gfx8_hwreg:
13 Bits of a hardware register being accessed.
15 The bits of this operand have the following meaning:
17 ======= ===================== ============
18 Bits Description Value Range
19 ======= ===================== ============
20 5:0 Register *id*. 0..63
21 10:6 First bit *offset*. 0..31
22 15:11 *Size* in bits. 1..32
23 ======= ===================== ============
25 This operand may be specified as one of the following:
27 * An :ref:`integer_number<amdgpu_synid_integer_number>` or an :ref:`absolute_expression<amdgpu_synid_absolute_expression>`. The value must be in the range from 0 to 0xFFFF.
28 * An *hwreg* value which is described below.
30 ==================================== ===============================================================================
31 Hwreg Value Syntax Description
32 ==================================== ===============================================================================
33 hwreg({0..63}) All bits of a register indicated by the register *id*.
34 hwreg(<*name*>) All bits of a register indicated by the register *name*.
35 hwreg({0..63}, {0..31}, {1..32}) Register bits indicated by the register *id*, first bit *offset* and *size*.
36 hwreg(<*name*>, {0..31}, {1..32}) Register bits indicated by the register *name*, first bit *offset* and *size*.
37 ==================================== ===============================================================================
39 Numeric values may be specified as positive :ref:`integer numbers<amdgpu_synid_integer_number>`
40 or :ref:`absolute expressions<amdgpu_synid_absolute_expression>`.
42 Predefined register *names* include:
44 ============================== ==========================================
46 ============================== ==========================================
47 HW_REG_MODE Shader writable mode bits.
48 HW_REG_STATUS Shader read-only status.
49 HW_REG_TRAPSTS Trap status.
50 HW_REG_HW_ID Id of wave, simd, compute unit, etc.
51 HW_REG_GPR_ALLOC Per-wave SGPR and VGPR allocation.
52 HW_REG_LDS_ALLOC Per-wave LDS allocation.
53 HW_REG_IB_STS Counters of outstanding instructions.
54 ============================== ==========================================
63 hwreg_enc = reg | (offset << 6) | ((size - 1) << 11)
65 s_getreg_b32 s2, 0x1881
66 s_getreg_b32 s2, hwreg_enc // the same as above
67 s_getreg_b32 s2, hwreg(1, 2, 4) // the same as above
68 s_getreg_b32 s2, hwreg(reg, offset, size) // the same as above
70 s_getreg_b32 s2, hwreg(15)
71 s_getreg_b32 s2, hwreg(51, 1, 31)
72 s_getreg_b32 s2, hwreg(HW_REG_LDS_ALLOC, 0, 1)