| %{ |
| /* |
| * Copyright(c) 2019-2022 rev.ng Labs Srl. All Rights Reserved. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "idef-parser.h" |
| #include "parser-helpers.h" |
| #include "idef-parser.tab.h" |
| #include "idef-parser.yy.h" |
| |
| /* Uncomment this to disable yyasserts */ |
| /* #define NDEBUG */ |
| |
| #define ERR_LINE_CONTEXT 40 |
| |
| %} |
| |
| %lex-param {void *scanner} |
| %parse-param {void *scanner} |
| %parse-param {Context *c} |
| |
| %define parse.error verbose |
| %define parse.lac full |
| %define api.pure full |
| |
| %locations |
| |
| %union { |
| GString *string; |
| HexValue rvalue; |
| HexSat sat; |
| HexCast cast; |
| HexExtract extract; |
| HexMpy mpy; |
| HexSignedness signedness; |
| int index; |
| } |
| |
| /* Tokens */ |
| %start input |
| |
| %expect 1 |
| |
| %token IN INAME VAR |
| %token ABS CROUND ROUND CIRCADD COUNTONES INC DEC ANDA ORA XORA PLUSPLUS ASL |
| %token ASR LSR EQ NEQ LTE GTE MIN MAX ANDL FOR ICIRC IF MUN FSCR FCHK SXT |
| %token ZXT CONSTEXT LOCNT BREV SIGN LOAD STORE PC NPC LPCFG |
| %token LOAD_CANCEL CANCEL IDENTITY PART1 ROTL INSBITS SETBITS EXTRANGE |
| %token CAST4_8U FAIL CARRY_FROM_ADD ADDSAT64 LSBNEW |
| %token TYPE_SIZE_T TYPE_INT TYPE_SIGNED TYPE_UNSIGNED TYPE_LONG |
| |
| %token <rvalue> REG IMM PRED |
| %token <index> ELSE |
| %token <mpy> MPY |
| %token <sat> SAT |
| %token <cast> CAST DEPOSIT SETHALF |
| %token <extract> EXTRACT |
| %type <string> INAME |
| %type <rvalue> rvalue lvalue VAR assign_statement var var_decl var_type |
| %type <rvalue> FAIL |
| %type <rvalue> TYPE_SIGNED TYPE_UNSIGNED TYPE_INT TYPE_LONG TYPE_SIZE_T |
| %type <index> if_stmt IF |
| %type <signedness> SIGN |
| |
| /* Operator Precedences */ |
| %left MIN MAX |
| %left '(' |
| %left ',' |
| %left '=' |
| %right CIRCADD |
| %right INC DEC ANDA ORA XORA |
| %left '?' ':' |
| %left ANDL |
| %left '|' |
| %left '^' ANDOR |
| %left '&' |
| %left EQ NEQ |
| %left '<' '>' LTE GTE |
| %left ASL ASR LSR |
| %right ABS |
| %left '-' '+' |
| %left '*' '/' '%' MPY |
| %right '~' '!' |
| %left '[' |
| %right CAST |
| %right LOCNT BREV |
| |
| /* Bison Grammar */ |
| %% |
| |
| /* Input file containing the description of each hexagon instruction */ |
| input : instructions |
| { |
| /* Suppress warning about unused yynerrs */ |
| (void) yynerrs; |
| YYACCEPT; |
| } |
| ; |
| |
| instructions : instruction instructions |
| | %empty |
| ; |
| |
| instruction : INAME |
| { |
| gen_inst(c, $1); |
| } |
| arguments |
| { |
| EMIT_SIG(c, ")"); |
| EMIT_HEAD(c, "{\n"); |
| } |
| code |
| { |
| gen_inst_code(c, &@1); |
| } |
| | error /* Recover gracefully after instruction compilation error */ |
| { |
| free_instruction(c); |
| } |
| ; |
| |
| arguments : '(' ')' |
| | '(' argument_list ')'; |
| |
| argument_list : argument_decl ',' argument_list |
| | argument_decl |
| ; |
| |
| var : VAR |
| { |
| track_string(c, $1.var.name); |
| $$ = $1; |
| } |
| ; |
| |
| /* |
| * Here the integer types are defined from valid combinations of |
| * `signed`, `unsigned`, `int`, and `long` tokens. The `signed` |
| * and `unsigned` tokens are here assumed to always be placed |
| * first in the type declaration, which is not the case in |
| * normal C. Similarly, `int` is assumed to always be placed |
| * last in the type. |
| */ |
| type_int : TYPE_INT |
| | TYPE_SIGNED |
| | TYPE_SIGNED TYPE_INT; |
| type_uint : TYPE_UNSIGNED |
| | TYPE_UNSIGNED TYPE_INT; |
| type_ulonglong : TYPE_UNSIGNED TYPE_LONG TYPE_LONG |
| | TYPE_UNSIGNED TYPE_LONG TYPE_LONG TYPE_INT; |
| |
| /* |
| * Here the various valid int types defined above specify |
| * their `signedness` and `bit_width`. The LP64 convention |
| * is assumed where longs are 64-bit, long longs are then |
| * assumed to also be 64-bit. |
| */ |
| var_type : TYPE_SIZE_T |
| { |
| yyassert(c, &@1, $1.bit_width <= 64, |
| "Variables with size > 64-bit are not supported!"); |
| $$ = $1; |
| } |
| | type_int |
| { |
| $$.signedness = SIGNED; |
| $$.bit_width = 32; |
| } |
| | type_uint |
| { |
| $$.signedness = UNSIGNED; |
| $$.bit_width = 32; |
| } |
| | type_ulonglong |
| { |
| $$.signedness = UNSIGNED; |
| $$.bit_width = 64; |
| } |
| ; |
| |
| /* Rule to capture declarations of VARs */ |
| var_decl : var_type IMM |
| { |
| /* |
| * Rule to capture "int i;" declarations since "i" is special |
| * and assumed to be always be IMM. Moreover, "i" is only |
| * assumed to be used in for-loops. |
| * |
| * Therefore we want to NOP these declarations. |
| */ |
| yyassert(c, &@2, $2.imm.type == I, |
| "Variable declaration with immedaties only allowed" |
| " for the loop induction variable \"i\""); |
| $$ = $2; |
| } |
| | var_type var |
| { |
| /* |
| * Allocate new variable, this checks that it hasn't already |
| * been declared. |
| */ |
| gen_varid_allocate(c, &@1, &$2, $1.bit_width, $1.signedness); |
| /* Copy var for variable name */ |
| $$ = $2; |
| /* Copy type info from var_type */ |
| $$.signedness = $1.signedness; |
| $$.bit_width = $1.bit_width; |
| } |
| ; |
| |
| /* Return the modified registers list */ |
| code : '{' statements '}' |
| { |
| c->inst.code_begin = c->input_buffer + @2.first_column - 1; |
| c->inst.code_end = c->input_buffer + @2.last_column - 1; |
| } |
| | '{' |
| { |
| /* Nop */ |
| } |
| '}' |
| ; |
| |
| argument_decl : REG |
| { |
| emit_arg(c, &@1, &$1); |
| /* Enqueue register into initialization list */ |
| g_array_append_val(c->inst.init_list, $1); |
| } |
| | PRED |
| { |
| emit_arg(c, &@1, &$1); |
| /* Enqueue predicate into initialization list */ |
| g_array_append_val(c->inst.init_list, $1); |
| } |
| | IN REG |
| { |
| emit_arg(c, &@2, &$2); |
| } |
| | IN PRED |
| { |
| emit_arg(c, &@2, &$2); |
| } |
| | IMM |
| { |
| EMIT_SIG(c, ", int %ciV", $1.imm.id); |
| } |
| ; |
| |
| code_block : '{' statements '}' |
| | '{' '}' |
| ; |
| |
| /* A list of one or more statements */ |
| statements : statements statement |
| | statement |
| ; |
| |
| /* Statements can be assignment (rvalue ';'), control or memory statements */ |
| statement : control_statement |
| | var_decl ';' |
| | rvalue ';' |
| { |
| gen_rvalue_free(c, &@1, &$1); |
| } |
| | code_block |
| | ';' |
| ; |
| |
| assign_statement : lvalue '=' rvalue |
| { |
| @1.last_column = @3.last_column; |
| gen_assign(c, &@1, &$1, &$3); |
| $$ = $1; |
| } |
| | var_decl '=' rvalue |
| { |
| @1.last_column = @3.last_column; |
| gen_assign(c, &@1, &$1, &$3); |
| $$ = $1; |
| } |
| | lvalue INC rvalue |
| { |
| @1.last_column = @3.last_column; |
| HexValue tmp = gen_bin_op(c, &@1, ADD_OP, &$1, &$3); |
| gen_assign(c, &@1, &$1, &tmp); |
| $$ = $1; |
| } |
| | lvalue DEC rvalue |
| { |
| @1.last_column = @3.last_column; |
| HexValue tmp = gen_bin_op(c, &@1, SUB_OP, &$1, &$3); |
| gen_assign(c, &@1, &$1, &tmp); |
| $$ = $1; |
| } |
| | lvalue ANDA rvalue |
| { |
| @1.last_column = @3.last_column; |
| HexValue tmp = gen_bin_op(c, &@1, ANDB_OP, &$1, &$3); |
| gen_assign(c, &@1, &$1, &tmp); |
| $$ = $1; |
| } |
| | lvalue ORA rvalue |
| { |
| @1.last_column = @3.last_column; |
| HexValue tmp = gen_bin_op(c, &@1, ORB_OP, &$1, &$3); |
| gen_assign(c, &@1, &$1, &tmp); |
| $$ = $1; |
| } |
| | lvalue XORA rvalue |
| { |
| @1.last_column = @3.last_column; |
| HexValue tmp = gen_bin_op(c, &@1, XORB_OP, &$1, &$3); |
| gen_assign(c, &@1, &$1, &tmp); |
| $$ = $1; |
| } |
| | PRED '=' rvalue |
| { |
| @1.last_column = @3.last_column; |
| gen_pred_assign(c, &@1, &$1, &$3); |
| } |
| | IMM '=' rvalue |
| { |
| @1.last_column = @3.last_column; |
| yyassert(c, &@1, $3.type == IMMEDIATE, |
| "Cannot assign non-immediate to immediate!"); |
| yyassert(c, &@1, $1.imm.type == VARIABLE, |
| "Cannot assign to non-variable!"); |
| /* Assign to the function argument */ |
| OUT(c, &@1, &$1, " = ", &$3, ";\n"); |
| $$ = $1; |
| } |
| | PC '=' rvalue |
| { |
| @1.last_column = @3.last_column; |
| yyassert(c, &@1, !is_inside_ternary(c), |
| "Assignment side-effect not modeled!"); |
| $3 = gen_rvalue_truncate(c, &@1, &$3); |
| $3 = rvalue_materialize(c, &@1, &$3); |
| OUT(c, &@1, "gen_write_new_pc(", &$3, ");\n"); |
| gen_rvalue_free(c, &@1, &$3); /* Free temporary value */ |
| } |
| | LOAD '(' IMM ',' IMM ',' SIGN ',' var ',' lvalue ')' |
| { |
| @1.last_column = @12.last_column; |
| yyassert(c, &@1, !is_inside_ternary(c), |
| "Assignment side-effect not modeled!"); |
| yyassert(c, &@1, $3.imm.value == 1, |
| "LOAD of arrays not supported!"); |
| gen_load(c, &@1, &$5, $7, &$9, &$11); |
| } |
| | STORE '(' IMM ',' IMM ',' var ',' rvalue ')' |
| /* Store primitive */ |
| { |
| @1.last_column = @10.last_column; |
| yyassert(c, &@1, !is_inside_ternary(c), |
| "Assignment side-effect not modeled!"); |
| yyassert(c, &@1, $3.imm.value == 1, |
| "STORE of arrays not supported!"); |
| gen_store(c, &@1, &$5, &$7, &$9); |
| } |
| | LPCFG '=' rvalue |
| { |
| @1.last_column = @3.last_column; |
| yyassert(c, &@1, !is_inside_ternary(c), |
| "Assignment side-effect not modeled!"); |
| $3 = gen_rvalue_truncate(c, &@1, &$3); |
| $3 = rvalue_materialize(c, &@1, &$3); |
| OUT(c, &@1, "SET_USR_FIELD(USR_LPCFG, ", &$3, ");\n"); |
| gen_rvalue_free(c, &@1, &$3); |
| } |
| | DEPOSIT '(' rvalue ',' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @8.last_column; |
| yyassert(c, &@1, !is_inside_ternary(c), |
| "Assignment side-effect not modeled!"); |
| gen_deposit_op(c, &@1, &$5, &$7, &$3, &$1); |
| } |
| | SETHALF '(' rvalue ',' lvalue ',' rvalue ')' |
| { |
| @1.last_column = @8.last_column; |
| yyassert(c, &@1, !is_inside_ternary(c), |
| "Assignment side-effect not modeled!"); |
| gen_sethalf(c, &@1, &$1, &$3, &$5, &$7); |
| } |
| | SETBITS '(' rvalue ',' rvalue ',' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @10.last_column; |
| yyassert(c, &@1, !is_inside_ternary(c), |
| "Assignment side-effect not modeled!"); |
| gen_setbits(c, &@1, &$3, &$5, &$7, &$9); |
| } |
| | INSBITS '(' lvalue ',' rvalue ',' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @10.last_column; |
| yyassert(c, &@1, !is_inside_ternary(c), |
| "Assignment side-effect not modeled!"); |
| gen_rdeposit_op(c, &@1, &$3, &$9, &$7, &$5); |
| } |
| | IDENTITY '(' rvalue ')' |
| { |
| @1.last_column = @4.last_column; |
| $$ = $3; |
| } |
| ; |
| |
| control_statement : frame_check |
| | cancel_statement |
| | if_statement |
| | for_statement |
| | fpart1_statement |
| ; |
| |
| frame_check : FCHK '(' rvalue ',' rvalue ')' ';' |
| { |
| gen_rvalue_free(c, &@1, &$3); |
| gen_rvalue_free(c, &@1, &$5); |
| } |
| ; |
| |
| cancel_statement : LOAD_CANCEL |
| { |
| gen_load_cancel(c, &@1); |
| } |
| | CANCEL |
| { |
| gen_cancel(c, &@1); |
| } |
| ; |
| |
| if_statement : if_stmt |
| { |
| /* Fix else label */ |
| OUT(c, &@1, "gen_set_label(if_label_", &$1, ");\n"); |
| } |
| | if_stmt ELSE |
| { |
| @1.last_column = @2.last_column; |
| $2 = gen_if_else(c, &@1, $1); |
| } |
| statement |
| { |
| OUT(c, &@1, "gen_set_label(if_label_", &$2, ");\n"); |
| } |
| ; |
| |
| for_statement : FOR '(' IMM '=' IMM ';' IMM '<' IMM ';' IMM PLUSPLUS ')' |
| { |
| yyassert(c, &@3, |
| $3.imm.type == I && |
| $7.imm.type == I && |
| $11.imm.type == I, |
| "Loop induction variable must be \"i\""); |
| @1.last_column = @13.last_column; |
| OUT(c, &@1, "for (int ", &$3, " = ", &$5, "; ", |
| &$7, " < ", &$9); |
| OUT(c, &@1, "; ", &$11, "++) {\n"); |
| } |
| code_block |
| { |
| OUT(c, &@1, "}\n"); |
| } |
| ; |
| |
| fpart1_statement : PART1 |
| { |
| OUT(c, &@1, "if (insn->part1) {\n"); |
| } |
| '(' statements ')' |
| { |
| @1.last_column = @3.last_column; |
| OUT(c, &@1, "return; }\n"); |
| } |
| ; |
| |
| if_stmt : IF '(' rvalue ')' |
| { |
| @1.last_column = @3.last_column; |
| $1 = gen_if_cond(c, &@1, &$3); |
| } |
| statement |
| { |
| $$ = $1; |
| } |
| ; |
| |
| rvalue : FAIL |
| { |
| yyassert(c, &@1, false, "Encountered a FAIL token as rvalue.\n"); |
| } |
| | assign_statement |
| | REG |
| { |
| $$ = $1; |
| } |
| | IMM |
| { |
| $$ = $1; |
| } |
| | PRED |
| { |
| $$ = gen_rvalue_pred(c, &@1, &$1); |
| } |
| | PC |
| { |
| /* Read PC from the CR */ |
| HexValue rvalue; |
| memset(&rvalue, 0, sizeof(HexValue)); |
| rvalue.type = IMMEDIATE; |
| rvalue.imm.type = IMM_PC; |
| rvalue.bit_width = 32; |
| rvalue.signedness = UNSIGNED; |
| $$ = rvalue; |
| } |
| | NPC |
| { |
| /* |
| * NPC is only read from CALLs, so we can hardcode it |
| * at translation time |
| */ |
| HexValue rvalue; |
| memset(&rvalue, 0, sizeof(HexValue)); |
| rvalue.type = IMMEDIATE; |
| rvalue.imm.type = IMM_NPC; |
| rvalue.bit_width = 32; |
| rvalue.signedness = UNSIGNED; |
| $$ = rvalue; |
| } |
| | CONSTEXT |
| { |
| HexValue rvalue; |
| memset(&rvalue, 0, sizeof(HexValue)); |
| rvalue.type = IMMEDIATE; |
| rvalue.imm.type = IMM_CONSTEXT; |
| rvalue.signedness = UNSIGNED; |
| rvalue.is_dotnew = false; |
| rvalue.is_manual = false; |
| $$ = rvalue; |
| } |
| | var |
| { |
| $$ = gen_rvalue_var(c, &@1, &$1); |
| } |
| | MPY '(' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @6.last_column; |
| $$ = gen_rvalue_mpy(c, &@1, &$1, &$3, &$5); |
| } |
| | rvalue '+' rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, ADD_OP, &$1, &$3); |
| } |
| | rvalue '-' rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, SUB_OP, &$1, &$3); |
| } |
| | rvalue '*' rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, MUL_OP, &$1, &$3); |
| } |
| | rvalue ASL rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, ASL_OP, &$1, &$3); |
| } |
| | rvalue ASR rvalue |
| { |
| @1.last_column = @3.last_column; |
| assert_signedness(c, &@1, $1.signedness); |
| if ($1.signedness == UNSIGNED) { |
| $$ = gen_bin_op(c, &@1, LSR_OP, &$1, &$3); |
| } else if ($1.signedness == SIGNED) { |
| $$ = gen_bin_op(c, &@1, ASR_OP, &$1, &$3); |
| } |
| } |
| | rvalue LSR rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, LSR_OP, &$1, &$3); |
| } |
| | rvalue '&' rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, ANDB_OP, &$1, &$3); |
| } |
| | rvalue '|' rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, ORB_OP, &$1, &$3); |
| } |
| | rvalue '^' rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, XORB_OP, &$1, &$3); |
| } |
| | rvalue ANDL rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, ANDL_OP, &$1, &$3); |
| } |
| | MIN '(' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, MINI_OP, &$3, &$5); |
| } |
| | MAX '(' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_op(c, &@1, MAXI_OP, &$3, &$5); |
| } |
| | '~' rvalue |
| { |
| @1.last_column = @2.last_column; |
| $$ = gen_rvalue_not(c, &@1, &$2); |
| } |
| | '!' rvalue |
| { |
| @1.last_column = @2.last_column; |
| $$ = gen_rvalue_notl(c, &@1, &$2); |
| } |
| | SAT '(' IMM ',' rvalue ')' |
| { |
| @1.last_column = @6.last_column; |
| $$ = gen_rvalue_sat(c, &@1, &$1, &$3, &$5); |
| } |
| | CAST rvalue |
| { |
| @1.last_column = @2.last_column; |
| /* Assign target signedness */ |
| $2.signedness = $1.signedness; |
| $$ = gen_cast_op(c, &@1, &$2, $1.bit_width, $1.signedness); |
| } |
| | rvalue EQ rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_EQ, &$1, &$3); |
| } |
| | rvalue NEQ rvalue |
| { |
| @1.last_column = @3.last_column; |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_NE, &$1, &$3); |
| } |
| | rvalue '<' rvalue |
| { |
| @1.last_column = @3.last_column; |
| |
| assert_signedness(c, &@1, $1.signedness); |
| assert_signedness(c, &@1, $3.signedness); |
| if ($1.signedness == UNSIGNED || $3.signedness == UNSIGNED) { |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_LTU, &$1, &$3); |
| } else { |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_LT, &$1, &$3); |
| } |
| } |
| | rvalue '>' rvalue |
| { |
| @1.last_column = @3.last_column; |
| |
| assert_signedness(c, &@1, $1.signedness); |
| assert_signedness(c, &@1, $3.signedness); |
| if ($1.signedness == UNSIGNED || $3.signedness == UNSIGNED) { |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_GTU, &$1, &$3); |
| } else { |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_GT, &$1, &$3); |
| } |
| } |
| | rvalue LTE rvalue |
| { |
| @1.last_column = @3.last_column; |
| |
| assert_signedness(c, &@1, $1.signedness); |
| assert_signedness(c, &@1, $3.signedness); |
| if ($1.signedness == UNSIGNED || $3.signedness == UNSIGNED) { |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_LEU, &$1, &$3); |
| } else { |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_LE, &$1, &$3); |
| } |
| } |
| | rvalue GTE rvalue |
| { |
| @1.last_column = @3.last_column; |
| |
| assert_signedness(c, &@1, $1.signedness); |
| assert_signedness(c, &@1, $3.signedness); |
| if ($1.signedness == UNSIGNED || $3.signedness == UNSIGNED) { |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_GEU, &$1, &$3); |
| } else { |
| $$ = gen_bin_cmp(c, &@1, TCG_COND_GE, &$1, &$3); |
| } |
| } |
| | rvalue '?' |
| { |
| $1.is_manual = true; |
| Ternary t = { 0 }; |
| t.state = IN_LEFT; |
| t.cond = $1; |
| g_array_append_val(c->ternary, t); |
| } |
| rvalue ':' |
| { |
| Ternary *t = &g_array_index(c->ternary, Ternary, |
| c->ternary->len - 1); |
| t->state = IN_RIGHT; |
| } |
| rvalue |
| { |
| @1.last_column = @5.last_column; |
| $$ = gen_rvalue_ternary(c, &@1, &$1, &$4, &$7); |
| } |
| | FSCR '(' rvalue ')' |
| { |
| @1.last_column = @4.last_column; |
| $$ = gen_rvalue_fscr(c, &@1, &$3); |
| } |
| | SXT '(' rvalue ',' IMM ',' rvalue ')' |
| { |
| @1.last_column = @8.last_column; |
| yyassert(c, &@1, $5.type == IMMEDIATE && |
| $5.imm.type == VALUE, |
| "SXT expects immediate values\n"); |
| $$ = gen_extend_op(c, &@1, &$3, $5.imm.value, &$7, SIGNED); |
| } |
| | ZXT '(' rvalue ',' IMM ',' rvalue ')' |
| { |
| @1.last_column = @8.last_column; |
| yyassert(c, &@1, $5.type == IMMEDIATE && |
| $5.imm.type == VALUE, |
| "ZXT expects immediate values\n"); |
| $$ = gen_extend_op(c, &@1, &$3, $5.imm.value, &$7, UNSIGNED); |
| } |
| | '(' rvalue ')' |
| { |
| $$ = $2; |
| } |
| | ABS rvalue |
| { |
| @1.last_column = @2.last_column; |
| $$ = gen_rvalue_abs(c, &@1, &$2); |
| } |
| | CROUND '(' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @6.last_column; |
| $$ = gen_convround_n(c, &@1, &$3, &$5); |
| } |
| | CROUND '(' rvalue ')' |
| { |
| @1.last_column = @4.last_column; |
| $$ = gen_convround(c, &@1, &$3); |
| } |
| | ROUND '(' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @6.last_column; |
| $$ = gen_round(c, &@1, &$3, &$5); |
| } |
| | '-' rvalue |
| { |
| @1.last_column = @2.last_column; |
| $$ = gen_rvalue_neg(c, &@1, &$2); |
| } |
| | ICIRC '(' rvalue ')' ASL IMM |
| { |
| @1.last_column = @6.last_column; |
| $$ = gen_tmp(c, &@1, 32, UNSIGNED); |
| OUT(c, &@1, "gen_read_ireg(", &$$, ", ", &$3, ", ", &$6, ");\n"); |
| gen_rvalue_free(c, &@1, &$3); |
| } |
| | CIRCADD '(' rvalue ',' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @8.last_column; |
| gen_circ_op(c, &@1, &$3, &$5, &$7); |
| } |
| | LOCNT '(' rvalue ')' |
| { |
| @1.last_column = @4.last_column; |
| /* Leading ones count */ |
| $$ = gen_locnt_op(c, &@1, &$3); |
| } |
| | COUNTONES '(' rvalue ')' |
| { |
| @1.last_column = @4.last_column; |
| /* Ones count */ |
| $$ = gen_ctpop_op(c, &@1, &$3); |
| } |
| | LPCFG |
| { |
| $$ = gen_tmp_value(c, &@1, "0", 32, UNSIGNED); |
| OUT(c, &@1, "GET_USR_FIELD(USR_LPCFG, ", &$$, ");\n"); |
| } |
| | EXTRACT '(' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @6.last_column; |
| $$ = gen_extract_op(c, &@1, &$5, &$3, &$1); |
| } |
| | EXTRANGE '(' rvalue ',' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @8.last_column; |
| yyassert(c, &@1, $5.type == IMMEDIATE && |
| $5.imm.type == VALUE && |
| $7.type == IMMEDIATE && |
| $7.imm.type == VALUE, |
| "Range extract needs immediate values!\n"); |
| $$ = gen_rextract_op(c, |
| &@1, |
| &$3, |
| $7.imm.value, |
| $5.imm.value - $7.imm.value + 1); |
| } |
| | CAST4_8U '(' rvalue ')' |
| { |
| @1.last_column = @4.last_column; |
| $$ = gen_rvalue_truncate(c, &@1, &$3); |
| $$.signedness = UNSIGNED; |
| $$ = rvalue_materialize(c, &@1, &$$); |
| $$ = gen_rvalue_extend(c, &@1, &$$); |
| } |
| | BREV '(' rvalue ')' |
| { |
| @1.last_column = @4.last_column; |
| $$ = gen_rvalue_brev(c, &@1, &$3); |
| } |
| | ROTL '(' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @6.last_column; |
| $$ = gen_rotl(c, &@1, &$3, &$5); |
| } |
| | ADDSAT64 '(' rvalue ',' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @8.last_column; |
| gen_addsat64(c, &@1, &$3, &$5, &$7); |
| } |
| | CARRY_FROM_ADD '(' rvalue ',' rvalue ',' rvalue ')' |
| { |
| @1.last_column = @8.last_column; |
| $$ = gen_carry_from_add(c, &@1, &$3, &$5, &$7); |
| } |
| | LSBNEW '(' rvalue ')' |
| { |
| @1.last_column = @4.last_column; |
| HexValue one = gen_imm_value(c, &@1, 1, 32, UNSIGNED); |
| $$ = gen_bin_op(c, &@1, ANDB_OP, &$3, &one); |
| } |
| ; |
| |
| lvalue : FAIL |
| { |
| @1.last_column = @1.last_column; |
| yyassert(c, &@1, false, "Encountered a FAIL token as lvalue.\n"); |
| } |
| | REG |
| { |
| $$ = $1; |
| } |
| | var |
| { |
| $$ = $1; |
| } |
| ; |
| |
| %% |
| |
| int main(int argc, char **argv) |
| { |
| if (argc != 5) { |
| fprintf(stderr, |
| "Semantics: Hexagon ISA to tinycode generator compiler\n\n"); |
| fprintf(stderr, |
| "Usage: ./semantics IDEFS EMITTER_C EMITTER_H " |
| "ENABLED_INSTRUCTIONS_LIST\n"); |
| return 1; |
| } |
| |
| enum { |
| ARG_INDEX_ARGV0 = 0, |
| ARG_INDEX_IDEFS, |
| ARG_INDEX_EMITTER_C, |
| ARG_INDEX_EMITTER_H, |
| ARG_INDEX_ENABLED_INSTRUCTIONS_LIST |
| }; |
| |
| FILE *enabled_file = fopen(argv[ARG_INDEX_ENABLED_INSTRUCTIONS_LIST], "w"); |
| |
| FILE *output_file = fopen(argv[ARG_INDEX_EMITTER_C], "w"); |
| fputs("#include \"qemu/osdep.h\"\n", output_file); |
| fputs("#include \"qemu/log.h\"\n", output_file); |
| fputs("#include \"cpu.h\"\n", output_file); |
| fputs("#include \"internal.h\"\n", output_file); |
| fputs("#include \"tcg/tcg-op.h\"\n", output_file); |
| fputs("#include \"insn.h\"\n", output_file); |
| fputs("#include \"opcodes.h\"\n", output_file); |
| fputs("#include \"translate.h\"\n", output_file); |
| fputs("#define QEMU_GENERATE\n", output_file); |
| fputs("#include \"genptr.h\"\n", output_file); |
| fputs("#include \"tcg/tcg.h\"\n", output_file); |
| fputs("#include \"macros.h\"\n", output_file); |
| fprintf(output_file, "#include \"%s\"\n", argv[ARG_INDEX_EMITTER_H]); |
| |
| FILE *defines_file = fopen(argv[ARG_INDEX_EMITTER_H], "w"); |
| assert(defines_file != NULL); |
| fputs("#ifndef HEX_EMITTER_H\n", defines_file); |
| fputs("#define HEX_EMITTER_H\n", defines_file); |
| fputs("\n", defines_file); |
| fputs("#include \"insn.h\"\n\n", defines_file); |
| |
| /* Parser input file */ |
| Context context = { 0 }; |
| context.defines_file = defines_file; |
| context.output_file = output_file; |
| context.enabled_file = enabled_file; |
| /* Initialize buffers */ |
| context.out_str = g_string_new(NULL); |
| context.signature_str = g_string_new(NULL); |
| context.header_str = g_string_new(NULL); |
| context.ternary = g_array_new(FALSE, TRUE, sizeof(Ternary)); |
| /* Read input file */ |
| FILE *input_file = fopen(argv[ARG_INDEX_IDEFS], "r"); |
| fseek(input_file, 0L, SEEK_END); |
| long input_size = ftell(input_file); |
| context.input_buffer = (char *) calloc(input_size + 1, sizeof(char)); |
| fseek(input_file, 0L, SEEK_SET); |
| size_t read_chars = fread(context.input_buffer, |
| sizeof(char), |
| input_size, |
| input_file); |
| if (read_chars != (size_t) input_size) { |
| fprintf(stderr, "Error: an error occurred while reading input file!\n"); |
| return -1; |
| } |
| yylex_init(&context.scanner); |
| YY_BUFFER_STATE buffer; |
| buffer = yy_scan_string(context.input_buffer, context.scanner); |
| /* Start the parsing procedure */ |
| yyparse(context.scanner, &context); |
| if (context.implemented_insn != context.total_insn) { |
| fprintf(stderr, |
| "Warning: %d/%d meta instructions have been implemented!\n", |
| context.implemented_insn, |
| context.total_insn); |
| } |
| fputs("#endif " START_COMMENT " HEX_EMITTER_h " END_COMMENT "\n", |
| defines_file); |
| /* Cleanup */ |
| yy_delete_buffer(buffer, context.scanner); |
| yylex_destroy(context.scanner); |
| free(context.input_buffer); |
| g_string_free(context.out_str, TRUE); |
| g_string_free(context.signature_str, TRUE); |
| g_string_free(context.header_str, TRUE); |
| g_array_free(context.ternary, TRUE); |
| fclose(output_file); |
| fclose(input_file); |
| fclose(defines_file); |
| fclose(enabled_file); |
| |
| return 0; |
| } |
