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i965: Add disassembler support for remaining opcodes.

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For opcodes that changed meaning on different generations, we store a
pointer to a secondary table and the table's size in a tagged union in
place of the mnemonic and number of sources.

Acked-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Matt Turner 2016-04-29 17:03:43 -07:00
parent b89b0a03f2
commit affaae197f
2 changed files with 92 additions and 18 deletions
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89
src/mesa/drivers/dri/i965/brw_eu.c
View file

@ -355,6 +355,37 @@ enum gen {
#define GEN_GE(gen) (~((gen) - 1) | gen)
#define GEN_LE(gen) (((gen) - 1) | gen)
static const struct opcode_desc opcode_10_descs[] = {
{ .name = "dim", .nsrc = 0, .ndst = 0, .gens = GEN75 },
{ .name = "smov", .nsrc = 0, .ndst = 0, .gens = GEN_GE(GEN8) },
};
static const struct opcode_desc opcode_35_descs[] = {
{ .name = "iff", .nsrc = 0, .ndst = 0, .gens = GEN_LE(GEN5) },
{ .name = "brc", .nsrc = 0, .ndst = 0, .gens = GEN_GE(GEN7) },
};
static const struct opcode_desc opcode_38_descs[] = {
{ .name = "do", .nsrc = 0, .ndst = 0, .gens = GEN_LE(GEN5) },
{ .name = "case", .nsrc = 0, .ndst = 0, .gens = GEN6 },
};
static const struct opcode_desc opcode_44_descs[] = {
{ .name = "msave", .nsrc = 0, .ndst = 0, .gens = GEN_LE(GEN5) },
{ .name = "call", .nsrc = 0, .ndst = 0, .gens = GEN_GE(GEN6) },
};
static const struct opcode_desc opcode_45_descs[] = {
{ .name = "mrest", .nsrc = 0, .ndst = 0, .gens = GEN_LE(GEN5) },
{ .name = "ret", .nsrc = 0, .ndst = 0, .gens = GEN_GE(GEN6) },
};
static const struct opcode_desc opcode_46_descs[] = {
{ .name = "push", .nsrc = 0, .ndst = 0, .gens = GEN_LE(GEN5) },
{ .name = "fork", .nsrc = 0, .ndst = 0, .gens = GEN6 },
{ .name = "goto", .nsrc = 0, .ndst = 0, .gens = GEN_GE(GEN8) },
};
static const struct opcode_desc opcode_descs[128] = {
[BRW_OPCODE_ILLEGAL] = {
.name = "illegal", .nsrc = 0, .ndst = 0, .gens = GEN_ALL,
@ -386,7 +417,9 @@ static const struct opcode_desc opcode_descs[128] = {
[BRW_OPCODE_SHL] = {
.name = "shl", .nsrc = 2, .ndst = 1, .gens = GEN_ALL,
},
/* BRW_OPCODE_DIM / BRW_OPCODE_SMOV */
[10] = {
.table = opcode_10_descs, .size = ARRAY_SIZE(opcode_10_descs),
},
/* Reserved - 11 */
[BRW_OPCODE_ASR] = {
.name = "asr", .nsrc = 2, .ndst = 1, .gens = GEN_ALL,
@ -424,12 +457,14 @@ static const struct opcode_desc opcode_descs[128] = {
[BRW_OPCODE_JMPI] = {
.name = "jmpi", .nsrc = 0, .ndst = 0, .gens = GEN_ALL,
},
/* BRW_OPCODE_BRD */
[33] = {
.name = "brd", .nsrc = 0, .ndst = 0, .gens = GEN_GE(GEN7),
},
[BRW_OPCODE_IF] = {
.name = "if", .nsrc = 0, .ndst = 0, .gens = GEN_ALL,
},
[BRW_OPCODE_IFF] = { /* also BRW_OPCODE_BRC */
.name = "iff", .nsrc = 0, .ndst = 0, .gens = GEN_LE(GEN5),
[35] = {
.table = opcode_35_descs, .size = ARRAY_SIZE(opcode_35_descs),
},
[BRW_OPCODE_ELSE] = {
.name = "else", .nsrc = 0, .ndst = 0, .gens = GEN_ALL,
@ -437,8 +472,8 @@ static const struct opcode_desc opcode_descs[128] = {
[BRW_OPCODE_ENDIF] = {
.name = "endif", .nsrc = 0, .ndst = 0, .gens = GEN_ALL,
},
[BRW_OPCODE_DO] = { /* also BRW_OPCODE_CASE */
.name = "do", .nsrc = 0, .ndst = 0, .gens = GEN_LE(GEN5),
[38] = {
.table = opcode_38_descs, .size = ARRAY_SIZE(opcode_38_descs),
},
[BRW_OPCODE_WHILE] = {
.name = "while", .nsrc = 0, .ndst = 0, .gens = GEN_ALL,
@ -452,11 +487,21 @@ static const struct opcode_desc opcode_descs[128] = {
[BRW_OPCODE_HALT] = {
.name = "halt", .nsrc = 0, .ndst = 0, .gens = GEN_ALL,
},
/* BRW_OPCODE_CALLA */
/* BRW_OPCODE_MSAVE / BRW_OPCODE_CALL */
/* BRW_OPCODE_MREST / BRW_OPCODE_RET */
/* BRW_OPCODE_PUSH / BRW_OPCODE_FORK / BRW_OPCODE_GOTO */
/* BRW_OPCODE_POP */
[43] = {
.name = "calla", .nsrc = 0, .ndst = 0, .gens = GEN_GE(GEN75),
},
[44] = {
.table = opcode_44_descs, .size = ARRAY_SIZE(opcode_44_descs),
},
[45] = {
.table = opcode_45_descs, .size = ARRAY_SIZE(opcode_45_descs),
},
[46] = {
.table = opcode_46_descs, .size = ARRAY_SIZE(opcode_46_descs),
},
[47] = {
.name = "pop", .nsrc = 2, .ndst = 0, .gens = GEN_LE(GEN5),
},
[BRW_OPCODE_WAIT] = {
.name = "wait", .nsrc = 1, .ndst = 0, .gens = GEN_ALL,
},
@ -557,7 +602,10 @@ static const struct opcode_desc opcode_descs[128] = {
[BRW_OPCODE_LRP] = {
.name = "lrp", .nsrc = 3, .ndst = 1, .gens = GEN_GE(GEN6),
},
/* Reserved 93-124 */
[93] = {
.name = "madm", .nsrc = 3, .ndst = 1, .gens = GEN_GE(GEN8),
},
/* Reserved 94-124 */
[BRW_OPCODE_NENOP] = {
.name = "nenop", .nsrc = 0, .ndst = 0, .gens = GEN45,
},
@ -591,8 +639,17 @@ brw_opcode_desc(const struct brw_device_info *devinfo, enum opcode opcode)
return NULL;
enum gen gen = gen_from_devinfo(devinfo);
if ((opcode_descs[opcode].gens & gen) != 0)
return &opcode_descs[opcode];
else
return NULL;
if (opcode_descs[opcode].gens != 0) {
if ((opcode_descs[opcode].gens & gen) != 0) {
return &opcode_descs[opcode];
}
} else if (opcode_descs[opcode].table != NULL) {
const struct opcode_desc *table = opcode_descs[opcode].table;
for (unsigned i = 0; i < opcode_descs[opcode].size; i++) {
if ((table[i].gens & gen) != 0) {
return &table[i];
}
}
}
return NULL;
}

21
src/mesa/drivers/dri/i965/brw_eu.h
View file

@ -546,8 +546,25 @@ next_offset(const struct brw_device_info *devinfo, void *store, int offset)
}
struct opcode_desc {
char *name;
int nsrc;
/* The union is an implementation detail used by brw_opcode_desc() to handle
* opcodes that have been reused for different instructions across hardware
* generations.
*
* The gens field acts as a tag. If it is non-zero, name points to a string
* containing the instruction mnemonic. If it is zero, the table field is
* valid and either points to a secondary opcode_desc table with 'size'
* elements or is NULL and no such instruction exists for the opcode.
*/
union {
struct {
char *name;
int nsrc;
};
struct {
const struct opcode_desc *table;
unsigned size;
};
};
int ndst;
int gens;
};