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author | Taylor Simpson <tsimpson@quicinc.com> | 2023-04-26 10:32:32 -0700 |
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committer | Taylor Simpson <tsimpson@quicinc.com> | 2023-05-18 12:40:52 -0700 |
commit | 163e5fa38e47281f8e83946794f6c202749bff32 (patch) | |
tree | e20f354a90bb550325c608867085cc7fc1bd197d | |
parent | 0fc56c437566f15e3fe54b568951eecb3cd68bf3 (diff) | |
download | qemu-163e5fa38e47281f8e83946794f6c202749bff32.zip qemu-163e5fa38e47281f8e83946794f6c202749bff32.tar.gz qemu-163e5fa38e47281f8e83946794f6c202749bff32.tar.bz2 |
Hexagon (target/hexagon) Additional instructions handled by idef-parser
**** Changes in v3 ****
Fix bugs exposed by dpmpyss_rnd_s0 instruction
Set correct size/signedness for constants
Test cases added to tests/tcg/hexagon/misc.c
**** Changes in v2 ****
Fix bug in imm_print identified in clang build
Currently, idef-parser skips all floating point instructions. However,
there are some floating point instructions that can be handled.
The following instructions are now parsed
F2_sfimm_p
F2_sfimm_n
F2_dfimm_p
F2_dfimm_n
F2_dfmpyll
F2_dfmpylh
To make these instructions work, we fix some bugs in parser-helpers.c
gen_rvalue_extend
gen_cast_op
imm_print
lexer properly sets size/signedness of constants
Test cases added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Tested-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230501203125.4025991-1-tsimpson@quicinc.com>
-rw-r--r-- | target/hexagon/gen_idef_parser_funcs.py | 10 | ||||
-rw-r--r-- | target/hexagon/idef-parser/idef-parser.lex | 37 | ||||
-rw-r--r-- | target/hexagon/idef-parser/idef-parser.y | 2 | ||||
-rw-r--r-- | target/hexagon/idef-parser/parser-helpers.c | 61 | ||||
-rw-r--r-- | target/hexagon/idef-parser/parser-helpers.h | 2 | ||||
-rw-r--r-- | tests/tcg/hexagon/fpstuff.c | 54 | ||||
-rw-r--r-- | tests/tcg/hexagon/misc.c | 35 |
7 files changed, 160 insertions, 41 deletions
diff --git a/target/hexagon/gen_idef_parser_funcs.py b/target/hexagon/gen_idef_parser_funcs.py index ad2e5c0..639458b 100644 --- a/target/hexagon/gen_idef_parser_funcs.py +++ b/target/hexagon/gen_idef_parser_funcs.py @@ -103,7 +103,15 @@ def main(): continue if tag.startswith("V6_"): continue - if tag.startswith("F"): + if ( tag.startswith("F") and + tag not in { + "F2_sfimm_p", + "F2_sfimm_n", + "F2_dfimm_p", + "F2_dfimm_n", + "F2_dfmpyll", + "F2_dfmpylh" + }): continue if tag.endswith("_locked"): continue diff --git a/target/hexagon/idef-parser/idef-parser.lex b/target/hexagon/idef-parser/idef-parser.lex index 5eb8ac5..cd5958e 100644 --- a/target/hexagon/idef-parser/idef-parser.lex +++ b/target/hexagon/idef-parser/idef-parser.lex @@ -401,12 +401,39 @@ STRING_LIT \"(\\.|[^"\\])*\" } return SIGN; } -"0x"{HEX_DIGIT}+ | -{DIGIT}+ { yylval->rvalue.type = IMMEDIATE; - yylval->rvalue.bit_width = 32; - yylval->rvalue.signedness = SIGNED; +"0x"{HEX_DIGIT}+ { uint64_t value = strtoull(yytext, NULL, 0); + yylval->rvalue.type = IMMEDIATE; yylval->rvalue.imm.type = VALUE; - yylval->rvalue.imm.value = strtoull(yytext, NULL, 0); + yylval->rvalue.imm.value = value; + if (value <= INT_MAX) { + yylval->rvalue.bit_width = sizeof(int) * 8; + yylval->rvalue.signedness = SIGNED; + } else if (value <= UINT_MAX) { + yylval->rvalue.bit_width = sizeof(unsigned int) * 8; + yylval->rvalue.signedness = UNSIGNED; + } else if (value <= LONG_MAX) { + yylval->rvalue.bit_width = sizeof(long) * 8; + yylval->rvalue.signedness = SIGNED; + } else if (value <= ULONG_MAX) { + yylval->rvalue.bit_width = sizeof(unsigned long) * 8; + yylval->rvalue.signedness = UNSIGNED; + } else { + g_assert_not_reached(); + } + return IMM; } +{DIGIT}+ { int64_t value = strtoll(yytext, NULL, 0); + yylval->rvalue.type = IMMEDIATE; + yylval->rvalue.imm.type = VALUE; + yylval->rvalue.imm.value = value; + if (value >= INT_MIN && value <= INT_MAX) { + yylval->rvalue.bit_width = sizeof(int) * 8; + yylval->rvalue.signedness = SIGNED; + } else if (value >= LONG_MIN && value <= LONG_MAX) { + yylval->rvalue.bit_width = sizeof(long) * 8; + yylval->rvalue.signedness = SIGNED; + } else { + g_assert_not_reached(); + } return IMM; } "0x"{HEX_DIGIT}+"ULL" | {DIGIT}+"ULL" { yylval->rvalue.type = IMMEDIATE; diff --git a/target/hexagon/idef-parser/idef-parser.y b/target/hexagon/idef-parser/idef-parser.y index 5444fd4..5f3907e 100644 --- a/target/hexagon/idef-parser/idef-parser.y +++ b/target/hexagon/idef-parser/idef-parser.y @@ -594,8 +594,6 @@ rvalue : FAIL | CAST rvalue { @1.last_column = @2.last_column; - /* Assign target signedness */ - $2.signedness = $1.signedness; $$ = gen_cast_op(c, &@1, &$2, $1.bit_width, $1.signedness); } | rvalue EQ rvalue diff --git a/target/hexagon/idef-parser/parser-helpers.c b/target/hexagon/idef-parser/parser-helpers.c index 6626e00..9550097 100644 --- a/target/hexagon/idef-parser/parser-helpers.c +++ b/target/hexagon/idef-parser/parser-helpers.c @@ -167,8 +167,9 @@ void reg_print(Context *c, YYLTYPE *locp, HexReg *reg) EMIT(c, "hex_gpr[%u]", reg->id); } -void imm_print(Context *c, YYLTYPE *locp, HexImm *imm) +void imm_print(Context *c, YYLTYPE *locp, HexValue *rvalue) { + HexImm *imm = &rvalue->imm; switch (imm->type) { case I: EMIT(c, "i"); @@ -177,7 +178,21 @@ void imm_print(Context *c, YYLTYPE *locp, HexImm *imm) EMIT(c, "%ciV", imm->id); break; case VALUE: - EMIT(c, "((int64_t) %" PRIu64 "ULL)", (int64_t) imm->value); + if (rvalue->bit_width == 32) { + if (rvalue->signedness == UNSIGNED) { + EMIT(c, "((uint32_t) 0x%" PRIx32 ")", (uint32_t) imm->value); + } else { + EMIT(c, "((int32_t) 0x%" PRIx32 ")", (int32_t) imm->value); + } + } else if (rvalue->bit_width == 64) { + if (rvalue->signedness == UNSIGNED) { + EMIT(c, "((uint64_t) 0x%" PRIx64 "ULL)", (uint64_t) imm->value); + } else { + EMIT(c, "((int64_t) 0x%" PRIx64 "LL)", (int64_t) imm->value); + } + } else { + g_assert_not_reached(); + } break; case QEMU_TMP: EMIT(c, "qemu_tmp_%" PRIu64, imm->index); @@ -213,7 +228,7 @@ void rvalue_print(Context *c, YYLTYPE *locp, void *pointer) tmp_print(c, locp, &rvalue->tmp); break; case IMMEDIATE: - imm_print(c, locp, &rvalue->imm); + imm_print(c, locp, rvalue); break; case VARID: var_print(c, locp, &rvalue->var); @@ -386,13 +401,10 @@ HexValue gen_rvalue_extend(Context *c, YYLTYPE *locp, HexValue *rvalue) if (rvalue->type == IMMEDIATE) { HexValue res = gen_imm_qemu_tmp(c, locp, 64, rvalue->signedness); - bool is_unsigned = (rvalue->signedness == UNSIGNED); - const char *sign_suffix = is_unsigned ? "u" : ""; gen_c_int_type(c, locp, 64, rvalue->signedness); - OUT(c, locp, " ", &res, " = "); - OUT(c, locp, "(", sign_suffix, "int64_t) "); - OUT(c, locp, "(", sign_suffix, "int32_t) "); - OUT(c, locp, rvalue, ";\n"); + OUT(c, locp, " ", &res, " = ("); + gen_c_int_type(c, locp, 64, rvalue->signedness); + OUT(c, locp, ")", rvalue, ";\n"); return res; } else { HexValue res = gen_tmp(c, locp, 64, rvalue->signedness); @@ -959,33 +971,18 @@ HexValue gen_cast_op(Context *c, unsigned target_width, HexSignedness signedness) { + HexValue res; assert_signedness(c, locp, src->signedness); if (src->bit_width == target_width) { - return *src; - } else if (src->type == IMMEDIATE) { - HexValue res = *src; - res.bit_width = target_width; - res.signedness = signedness; - return res; + res = *src; + } else if (src->bit_width < target_width) { + res = gen_rvalue_extend(c, locp, src); } else { - HexValue res = gen_tmp(c, locp, target_width, signedness); - /* Truncate */ - if (src->bit_width > target_width) { - OUT(c, locp, "tcg_gen_trunc_i64_tl(", &res, ", ", src, ");\n"); - } else { - assert_signedness(c, locp, src->signedness); - if (src->signedness == UNSIGNED) { - /* Extend unsigned */ - OUT(c, locp, "tcg_gen_extu_i32_i64(", - &res, ", ", src, ");\n"); - } else { - /* Extend signed */ - OUT(c, locp, "tcg_gen_ext_i32_i64(", - &res, ", ", src, ");\n"); - } - } - return res; + /* src->bit_width > target_width */ + res = gen_rvalue_truncate(c, locp, src); } + res.signedness = signedness; + return res; } diff --git a/target/hexagon/idef-parser/parser-helpers.h b/target/hexagon/idef-parser/parser-helpers.h index 1239d23..7c58087 100644 --- a/target/hexagon/idef-parser/parser-helpers.h +++ b/target/hexagon/idef-parser/parser-helpers.h @@ -80,7 +80,7 @@ void reg_compose(Context *c, YYLTYPE *locp, HexReg *reg, char reg_id[5]); void reg_print(Context *c, YYLTYPE *locp, HexReg *reg); -void imm_print(Context *c, YYLTYPE *locp, HexImm *imm); +void imm_print(Context *c, YYLTYPE *locp, HexValue *rvalue); void var_print(Context *c, YYLTYPE *locp, HexVar *var); diff --git a/tests/tcg/hexagon/fpstuff.c b/tests/tcg/hexagon/fpstuff.c index 90ce9a6..28f9397 100644 --- a/tests/tcg/hexagon/fpstuff.c +++ b/tests/tcg/hexagon/fpstuff.c @@ -20,6 +20,7 @@ */ #include <stdio.h> +#include <float.h> const int FPINVF_BIT = 1; /* Invalid */ const int FPINVF = 1 << FPINVF_BIT; @@ -706,6 +707,57 @@ static void check_float2int_convs() check_fpstatus(usr, FPINVF); } +static void check_float_consts(void) +{ + int res32; + unsigned long long res64; + + asm("%0 = sfmake(#%1):neg\n\t" : "=r"(res32) : "i"(0xf)); + check32(res32, 0xbc9e0000); + + asm("%0 = sfmake(#%1):pos\n\t" : "=r"(res32) : "i"(0xf)); + check32(res32, 0x3c9e0000); + + asm("%0 = dfmake(#%1):neg\n\t" : "=r"(res64) : "i"(0xf)); + check64(res64, 0xbf93c00000000000ULL); + + asm("%0 = dfmake(#%1):pos\n\t" : "=r"(res64) : "i"(0xf)); + check64(res64, 0x3f93c00000000000ULL); +} + +static inline unsigned long long dfmpyll(double x, double y) +{ + unsigned long long res64; + asm("%0 = dfmpyll(%1, %2)" : "=r"(res64) : "r"(x), "r"(y)); + return res64; +} + +static inline unsigned long long dfmpylh(double acc, double x, double y) +{ + unsigned long long res64 = *(unsigned long long *)&acc; + asm("%0 += dfmpylh(%1, %2)" : "+r"(res64) : "r"(x), "r"(y)); + return res64; +} + +static void check_dfmpyxx(void) +{ + unsigned long long res64; + + res64 = dfmpyll(DBL_MIN, DBL_MIN); + check64(res64, 0ULL); + res64 = dfmpyll(-1.0, DBL_MIN); + check64(res64, 0ULL); + res64 = dfmpyll(DBL_MAX, DBL_MAX); + check64(res64, 0x1fffffffdULL); + + res64 = dfmpylh(DBL_MIN, DBL_MIN, DBL_MIN); + check64(res64, 0x10000000000000ULL); + res64 = dfmpylh(-1.0, DBL_MAX, DBL_MIN); + check64(res64, 0xc00fffffffe00000ULL); + res64 = dfmpylh(DBL_MAX, 0.0, -1.0); + check64(res64, 0x7fefffffffffffffULL); +} + int main() { check_compare_exception(); @@ -718,6 +770,8 @@ int main() check_sffixupd(); check_sffms(); check_float2int_convs(); + check_float_consts(); + check_dfmpyxx(); puts(err ? "FAIL" : "PASS"); return err ? 1 : 0; diff --git a/tests/tcg/hexagon/misc.c b/tests/tcg/hexagon/misc.c index 4fcbb22..cfdda3f 100644 --- a/tests/tcg/hexagon/misc.c +++ b/tests/tcg/hexagon/misc.c @@ -391,6 +391,39 @@ void test_count_trailing_zeros_ones(void) check(ct1p(0xffffff0fffffffffULL), 36); } +static inline int dpmpyss_rnd_s0(int x, int y) +{ + int res; + asm("%0 = mpy(%1, %2):rnd\n\t" : "=r"(res) : "r"(x), "r"(y)); + return res; +} + +void test_dpmpyss_rnd_s0(void) +{ + check(dpmpyss_rnd_s0(-1, 0x80000000), 1); + check(dpmpyss_rnd_s0(0, 0x80000000), 0); + check(dpmpyss_rnd_s0(1, 0x80000000), 0); + check(dpmpyss_rnd_s0(0x7fffffff, 0x80000000), 0xc0000001); + check(dpmpyss_rnd_s0(0x80000000, -1), 1); + check(dpmpyss_rnd_s0(-1, -1), 0); + check(dpmpyss_rnd_s0(0, -1), 0); + check(dpmpyss_rnd_s0(1, -1), 0); + check(dpmpyss_rnd_s0(0x7fffffff, -1), 0); + check(dpmpyss_rnd_s0(0x80000000, 0), 0); + check(dpmpyss_rnd_s0(-1, 0), 0); + check(dpmpyss_rnd_s0(0, 0), 0); + check(dpmpyss_rnd_s0(1, 0), 0); + check(dpmpyss_rnd_s0(-1, -1), 0); + check(dpmpyss_rnd_s0(0, -1), 0); + check(dpmpyss_rnd_s0(1, -1), 0); + check(dpmpyss_rnd_s0(0x7fffffff, 1), 0); + check(dpmpyss_rnd_s0(0x80000000, 0x7fffffff), 0xc0000001); + check(dpmpyss_rnd_s0(-1, 0x7fffffff), 0); + check(dpmpyss_rnd_s0(0, 0x7fffffff), 0); + check(dpmpyss_rnd_s0(1, 0x7fffffff), 0); + check(dpmpyss_rnd_s0(0x7fffffff, 0x7fffffff), 0x3fffffff); +} + int main() { int res; @@ -534,6 +567,8 @@ int main() test_count_trailing_zeros_ones(); + test_dpmpyss_rnd_s0(); + puts(err ? "FAIL" : "PASS"); return err; } |