typedef enum {
midgard_alu_op_fadd = 0x10,
midgard_alu_op_fmul = 0x14,
+
midgard_alu_op_fmin = 0x28,
midgard_alu_op_fmax = 0x2C,
+
midgard_alu_op_fmov = 0x30,
midgard_alu_op_froundeven = 0x34,
midgard_alu_op_ftrunc = 0x35,
midgard_alu_op_fdot3r = 0x3D,
midgard_alu_op_fdot4 = 0x3E,
midgard_alu_op_freduce = 0x3F,
+
midgard_alu_op_iadd = 0x40,
midgard_alu_op_ishladd = 0x41,
midgard_alu_op_isub = 0x46,
+ midgard_alu_op_iaddsat = 0x48,
+ midgard_alu_op_uaddsat = 0x49,
+ midgard_alu_op_isubsat = 0x4E,
+ midgard_alu_op_usubsat = 0x4F,
+
midgard_alu_op_imul = 0x58,
+
midgard_alu_op_imin = 0x60,
+ midgard_alu_op_umin = 0x61,
midgard_alu_op_imax = 0x62,
+ midgard_alu_op_umax = 0x63,
+ midgard_alu_op_ihadd = 0x64,
+ midgard_alu_op_uhadd = 0x65,
+ midgard_alu_op_irhadd = 0x66,
+ midgard_alu_op_urhadd = 0x67,
midgard_alu_op_iasr = 0x68,
midgard_alu_op_ilsr = 0x69,
midgard_alu_op_ishl = 0x6E,
+
midgard_alu_op_iand = 0x70,
midgard_alu_op_ior = 0x71,
- midgard_alu_op_inot = 0x72,
- midgard_alu_op_iandnot = 0x74, /* (a, b) -> a & ~b, used for not/b2f */
+ midgard_alu_op_inand = 0x72, /* ~(a & b), for inot let a = b */
+ midgard_alu_op_inor = 0x73, /* ~(a | b) */
+ midgard_alu_op_iandnot = 0x74, /* (a & ~b), used for not/b2f */
+ midgard_alu_op_iornot = 0x75, /* (a | ~b) */
midgard_alu_op_ixor = 0x76,
+ midgard_alu_op_inxor = 0x77, /* ~(a & b) */
+ midgard_alu_op_iclz = 0x78, /* Number of zeroes on left */
+ midgard_alu_op_ibitcount8 = 0x7A, /* Counts bits in 8-bit increments */
midgard_alu_op_imov = 0x7B,
- midgard_alu_op_iabs = 0x7C,
+ midgard_alu_op_iabsdiff = 0x7C,
+ midgard_alu_op_uabsdiff = 0x7D,
+ midgard_alu_op_ichoose = 0x7E, /* vector, component number - dupe for shuffle() */
+
midgard_alu_op_feq = 0x80,
midgard_alu_op_fne = 0x81,
midgard_alu_op_flt = 0x82,
midgard_alu_op_bball_eq = 0x89,
midgard_alu_op_fball_lt = 0x8A, /* all(lessThan(.., ..)) */
midgard_alu_op_fball_lte = 0x8B, /* all(lessThanEqual(.., ..)) */
+
midgard_alu_op_bbany_neq = 0x90, /* used for bvec4(1) */
midgard_alu_op_fbany_neq = 0x91, /* bvec4(0) also */
midgard_alu_op_fbany_lt = 0x92, /* any(lessThan(.., ..)) */
midgard_alu_op_ilt = 0xA4,
midgard_alu_op_ile = 0xA5,
midgard_alu_op_iball_eq = 0xA8,
- midgard_alu_op_ball = 0xA9,
+ midgard_alu_op_iball_neq = 0xA9,
midgard_alu_op_uball_lt = 0xAA,
midgard_alu_op_uball_lte = 0xAB,
midgard_alu_op_iball_lt = 0xAC,
midgard_alu_op_iball_lte = 0xAD,
+
midgard_alu_op_ibany_eq = 0xB0,
midgard_alu_op_ibany_neq = 0xB1,
midgard_alu_op_ubany_lt = 0xB2,
midgard_alu_op_ibany_lte = 0xB5, /* any(lessThanEqual(.., ..)) */
midgard_alu_op_i2f = 0xB8,
midgard_alu_op_u2f = 0xBC,
- midgard_alu_op_icsel = 0xC1,
- midgard_alu_op_fcsel_i = 0xC4,
+
+ midgard_alu_op_icsel_v = 0xC0, /* condition code r31 */
+ midgard_alu_op_icsel = 0xC1, /* condition code r31.w */
+ midgard_alu_op_fcsel_v = 0xC4,
midgard_alu_op_fcsel = 0xC5,
midgard_alu_op_fround = 0xC6,
+
midgard_alu_op_fatan_pt2 = 0xE8,
midgard_alu_op_fpow_pt1 = 0xEC,
+ midgard_alu_op_fpown_pt1 = 0xED,
+ midgard_alu_op_fpowr_pt1 = 0xEE,
+
midgard_alu_op_frcp = 0xF0,
midgard_alu_op_frsqrt = 0xF2,
midgard_alu_op_fsqrt = 0xF3,
typedef enum {
midgard_outmod_none = 0,
midgard_outmod_pos = 1,
- midgard_outmod_int = 2,
+ /* 0x2 unknown */
midgard_outmod_sat = 3
-} midgard_outmod;
+} midgard_outmod_float;
+
+typedef enum {
+ midgard_outmod_int_saturate = 0,
+ midgard_outmod_uint_saturate = 1,
+ midgard_outmod_int_wrap = 2,
+ midgard_outmod_int_high = 3, /* Overflowed portion */
+} midgard_outmod_int;
typedef enum {
- midgard_reg_mode_quarter = 0,
- midgard_reg_mode_half = 1,
- midgard_reg_mode_full = 2,
- midgard_reg_mode_double = 3 /* TODO: verify */
+ midgard_reg_mode_8 = 0,
+ midgard_reg_mode_16 = 1,
+ midgard_reg_mode_32 = 2,
+ midgard_reg_mode_64 = 3
} midgard_reg_mode;
typedef enum {
midgard_dest_override_none = 2
} midgard_dest_override;
+typedef enum {
+ midgard_int_sign_extend = 0,
+ midgard_int_zero_extend = 1,
+ midgard_int_normal = 2,
+ midgard_int_shift = 3
+} midgard_int_mod;
+
+#define MIDGARD_FLOAT_MOD_ABS (1 << 0)
+#define MIDGARD_FLOAT_MOD_NEG (1 << 1)
+
typedef struct
__attribute__((__packed__))
{
- bool abs : 1;
- bool negate : 1;
+ /* Either midgard_int_mod or from midgard_float_mod_*, depending on the
+ * type of op */
+ unsigned mod : 2;
/* replicate lower half if dest = half, or low/high half selection if
* dest = full
unsigned src1 : 13;
unsigned src2 : 13;
midgard_dest_override dest_override : 2;
- midgard_outmod outmod : 2;
+ midgard_outmod_float outmod : 2;
unsigned mask : 8;
}
midgard_vector_alu;
unsigned src1 : 6;
unsigned src2 : 11;
unsigned unknown : 1;
- midgard_outmod outmod : 2;
+ unsigned outmod : 2;
bool output_full : 1;
unsigned output_component : 3;
}
}
midgard_reg_info;
+/* In addition to conditional branches and jumps (unconditional branches),
+ * Midgard implements a bit of fixed function functionality used in fragment
+ * shaders via specially crafted branches. These have special branch opcodes,
+ * which perform a fixed-function operation and/or use the results of a
+ * fixed-function operation as the branch condition. */
+
typedef enum {
+ /* Regular branches */
midgard_jmp_writeout_op_branch_uncond = 1,
midgard_jmp_writeout_op_branch_cond = 2,
+
+ /* In a fragment shader, execute a discard_if instruction, with the
+ * corresponding condition code. Terminates the shader, so generally
+ * set the branch target to out of the shader */
midgard_jmp_writeout_op_discard = 4,
+
+ /* Branch if the tilebuffer is not yet ready. At the beginning of a
+ * fragment shader that reads from the tile buffer, for instance via
+ * ARM_shader_framebuffer_fetch or EXT_pixel_local_storage, this branch
+ * operation should be used as a loop. An instruction like
+ * "br.tilebuffer.always -1" does the trick, corresponding to
+ * "while(!is_tilebuffer_ready) */
+ midgard_jmp_writeout_op_tilebuffer_pending = 6,
+
+ /* In a fragment shader, try to write out the value pushed to r0 to the
+ * tilebuffer, subject to unknown state in r1.z and r1.w. If this
+ * succeeds, the shader terminates. If it fails, it branches to the
+ * specified branch target. Generally, this should be used in a loop to
+ * itself, acting as "do { write(r0); } while(!write_successful);" */
midgard_jmp_writeout_op_writeout = 7,
} midgard_jmp_writeout_op;
typedef enum {
midgard_condition_write0 = 0,
+
+ /* These condition codes denote a conditional branch on FALSE and on
+ * TRUE respectively */
midgard_condition_false = 1,
midgard_condition_true = 2,
- midgard_condition_always = 3, /* Special for writeout/uncond discard */
+
+ /* This condition code always branches. For a pure branch, the
+ * unconditional branch coding should be used instead, but for
+ * fixed-function branch opcodes, this is still useful */
+ midgard_condition_always = 3,
} midgard_condition;
typedef struct
typedef enum {
midgard_op_ld_st_noop = 0x03,
- midgard_op_load_attr_16 = 0x95,
- midgard_op_load_attr_32 = 0x94,
- midgard_op_load_vary_16 = 0x99,
- midgard_op_load_vary_32 = 0x98,
- midgard_op_load_color_buffer_16 = 0x9D,
- midgard_op_load_color_buffer_8 = 0xBA,
- midgard_op_load_uniform_16 = 0xAC,
- midgard_op_load_uniform_32 = 0xB0,
- midgard_op_store_vary_16 = 0xD5,
- midgard_op_store_vary_32 = 0xD4
+
+ /* Unclear why this is on the L/S unit, but (with an address of 0,
+ * appropriate swizzle, magic constant 0x24, and xy mask?) moves fp32 cube
+ * map coordinates in r27 to its cube map texture coordinate
+ * destination (e.g r29). 0x4 magic for lding from fp16 instead */
+
+ midgard_op_st_cubemap_coords = 0x0E,
+
+ /* Used in OpenCL. Probably can ld other things as well */
+ midgard_op_ld_global_id = 0x10,
+
+ /* val in r27.y, address embedded, outputs result to argument. Invert val for sub. Let val = +-1 for inc/dec. */
+ midgard_op_atomic_add = 0x40,
+ midgard_op_atomic_and = 0x44,
+ midgard_op_atomic_or = 0x48,
+ midgard_op_atomic_xor = 0x4C,
+
+ midgard_op_atomic_imin = 0x50,
+ midgard_op_atomic_umin = 0x54,
+ midgard_op_atomic_imax = 0x58,
+ midgard_op_atomic_umax = 0x5C,
+
+ midgard_op_atomic_xchg = 0x60,
+
+ /* Used for compute shader's __global arguments, __local variables (or
+ * for register spilling) */
+
+ midgard_op_ld_char = 0x81,
+ midgard_op_ld_char2 = 0x84,
+ midgard_op_ld_short = 0x85,
+ midgard_op_ld_char4 = 0x88, /* short2, int, float */
+ midgard_op_ld_short4 = 0x8C, /* int2, float2, long */
+ midgard_op_ld_int4 = 0x90, /* float4, long2 */
+
+ midgard_op_ld_attr_32 = 0x94,
+ midgard_op_ld_attr_16 = 0x95,
+ midgard_op_ld_attr_32i = 0x97,
+ midgard_op_ld_vary_32 = 0x98,
+ midgard_op_ld_vary_16 = 0x99,
+ midgard_op_ld_vary_32i = 0x9B,
+ midgard_op_ld_color_buffer_16 = 0x9D,
+
+ midgard_op_ld_uniform_16 = 0xAC,
+
+ midgard_op_ld_uniform_32 = 0xB0,
+ midgard_op_ld_color_buffer_8 = 0xBA,
+
+ midgard_op_st_char = 0xC0,
+ midgard_op_st_char2 = 0xC4, /* short */
+ midgard_op_st_char4 = 0xC8, /* short2, int, float */
+ midgard_op_st_short4 = 0xCC, /* int2, float2, long */
+ midgard_op_st_int4 = 0xD0, /* float4, long2 */
+
+ midgard_op_st_vary_32 = 0xD4,
+ midgard_op_st_vary_16 = 0xD5,
+ midgard_op_st_vary_32i = 0xD7,
+
+ /* Value to st in r27, location r26.w as short2 */
+ midgard_op_st_image_f = 0xD8,
+ midgard_op_st_image_ui = 0xDA,
+ midgard_op_st_image_i = 0xDB,
} midgard_load_store_op;
typedef enum {
unsigned in_reg_select : 1;
unsigned in_reg_upper : 1;
+ unsigned in_reg_swizzle : 8;
- unsigned in_reg_swizzle_left : 2;
- unsigned in_reg_swizzle_right : 2;
-
- unsigned unknown1 : 2;
-
- unsigned unknown8 : 4;
+ unsigned unknown8 : 2;
unsigned out_full : 1;
}
midgard_texture_word;
-/* Opcode name table */
-
-static char *alu_opcode_names[256] = {
- [midgard_alu_op_fadd] = "fadd",
- [midgard_alu_op_fmul] = "fmul",
- [midgard_alu_op_fmin] = "fmin",
- [midgard_alu_op_fmax] = "fmax",
- [midgard_alu_op_fmov] = "fmov",
- [midgard_alu_op_froundeven] = "froundeven",
- [midgard_alu_op_ftrunc] = "ftrunc",
- [midgard_alu_op_ffloor] = "ffloor",
- [midgard_alu_op_fceil] = "fceil",
- [midgard_alu_op_ffma] = "ffma",
- [midgard_alu_op_fdot3] = "fdot3",
- [midgard_alu_op_fdot3r] = "fdot3r",
- [midgard_alu_op_fdot4] = "fdot4",
- [midgard_alu_op_freduce] = "freduce",
- [midgard_alu_op_imin] = "imin",
- [midgard_alu_op_imax] = "imax",
- [midgard_alu_op_ishl] = "ishl",
- [midgard_alu_op_iasr] = "iasr",
- [midgard_alu_op_ilsr] = "ilsr",
- [midgard_alu_op_iadd] = "iadd",
- [midgard_alu_op_ishladd] = "ishladd",
- [midgard_alu_op_isub] = "isub",
- [midgard_alu_op_imul] = "imul",
- [midgard_alu_op_imov] = "imov",
- [midgard_alu_op_iabs] = "iabs",
- [midgard_alu_op_iand] = "iand",
- [midgard_alu_op_ior] = "ior",
- [midgard_alu_op_inot] = "inot",
- [midgard_alu_op_iandnot] = "iandnot",
- [midgard_alu_op_ixor] = "ixor",
- [midgard_alu_op_feq] = "feq",
- [midgard_alu_op_fne] = "fne",
- [midgard_alu_op_flt] = "flt",
- [midgard_alu_op_fle] = "fle",
- [midgard_alu_op_fball_eq] = "fball_eq",
- [midgard_alu_op_fbany_neq] = "fbany_neq",
- [midgard_alu_op_bball_eq] = "bball_eq",
- [midgard_alu_op_fball_lt] = "fball_lt",
- [midgard_alu_op_fball_lte] = "fball_lte",
- [midgard_alu_op_bbany_neq] = "bbany_neq",
- [midgard_alu_op_fbany_lt] = "fbany_lt",
- [midgard_alu_op_fbany_lte] = "fbany_lte",
- [midgard_alu_op_f2i] = "f2i",
- [midgard_alu_op_f2u] = "f2u",
- [midgard_alu_op_f2u8] = "f2u8",
- [midgard_alu_op_ieq] = "ieq",
- [midgard_alu_op_ine] = "ine",
- [midgard_alu_op_ult] = "ult",
- [midgard_alu_op_ule] = "ule",
- [midgard_alu_op_ilt] = "ilt",
- [midgard_alu_op_ile] = "ile",
- [midgard_alu_op_iball_eq] = "iball_eq",
- [midgard_alu_op_ball] = "ball",
- [midgard_alu_op_uball_lt] = "uball_lt",
- [midgard_alu_op_uball_lte] = "uball_lte",
- [midgard_alu_op_iball_lt] = "iball_lt",
- [midgard_alu_op_iball_lte] = "iball_lte",
- [midgard_alu_op_iball_eq] = "iball_eq",
- [midgard_alu_op_ibany_neq] = "ibany_neq",
- [midgard_alu_op_ubany_lt] = "ubany_lt",
- [midgard_alu_op_ubany_lte] = "ubany_lte",
- [midgard_alu_op_ibany_lt] = "ibany_lt",
- [midgard_alu_op_ibany_lte] = "ibany_lte",
- [midgard_alu_op_i2f] = "i2f",
- [midgard_alu_op_u2f] = "u2f",
- [midgard_alu_op_icsel] = "icsel",
- [midgard_alu_op_fcsel_i] = "fcsel_i",
- [midgard_alu_op_fcsel] = "fcsel",
- [midgard_alu_op_fround] = "fround",
- [midgard_alu_op_fatan_pt2] = "fatan_pt2",
- [midgard_alu_op_frcp] = "frcp",
- [midgard_alu_op_frsqrt] = "frsqrt",
- [midgard_alu_op_fsqrt] = "fsqrt",
- [midgard_alu_op_fpow_pt1] = "fpow_pt1",
- [midgard_alu_op_fexp2] = "fexp2",
- [midgard_alu_op_flog2] = "flog2",
- [midgard_alu_op_fsin] = "fsin",
- [midgard_alu_op_fcos] = "fcos",
- [midgard_alu_op_fatan2_pt1] = "fatan2_pt1"
-};
-
-static char *load_store_opcode_names[256] = {
- [midgard_op_load_attr_16] = "ld_attr_16",
- [midgard_op_load_attr_32] = "ld_attr_32",
- [midgard_op_load_vary_16] = "ld_vary_16",
- [midgard_op_load_vary_32] = "ld_vary_32",
- [midgard_op_load_uniform_16] = "ld_uniform_16",
- [midgard_op_load_uniform_32] = "ld_uniform_32",
- [midgard_op_load_color_buffer_8] = "ld_color_buffer_8",
- [midgard_op_load_color_buffer_16] = "ld_color_buffer_16",
- [midgard_op_store_vary_16] = "st_vary_16",
- [midgard_op_store_vary_32] = "st_vary_32"
-};
-
#endif
projects / mesa.git / blobdiff