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-rw-r--r--utils/5a/a.y673
1 files changed, 673 insertions, 0 deletions
diff --git a/utils/5a/a.y b/utils/5a/a.y
new file mode 100644
index 00000000..7ef969ca
--- /dev/null
+++ b/utils/5a/a.y
@@ -0,0 +1,673 @@
+%{
+#include "a.h"
+%}
+%union
+{
+ Sym *sym;
+ long lval;
+ double dval;
+ char sval[8];
+ Gen gen;
+}
+%left '|'
+%left '^'
+%left '&'
+%left '<' '>'
+%left '+' '-'
+%left '*' '/' '%'
+%token <lval> LTYPE1 LTYPE2 LTYPE3 LTYPE4 LTYPE5
+%token <lval> LTYPE6 LTYPE7 LTYPE8 LTYPE9 LTYPEA
+%token <lval> LTYPEB LTYPEC LTYPED LTYPEE LTYPEF
+%token <lval> LTYPEG LTYPEH LTYPEI LTYPEJ LTYPEK
+%token <lval> LTYPEL LTYPEM LTYPEN LTYPEBX
+%token <lval> LCONST LSP LSB LFP LPC
+%token <lval> LTYPEX LR LREG LF LFREG LC LCREG LPSR LFCR
+%token <lval> LCOND LS LAT
+%token <dval> LFCONST
+%token <sval> LSCONST
+%token <sym> LNAME LLAB LVAR
+%type <lval> con expr oexpr pointer offset sreg spreg creg
+%type <lval> rcon cond reglist
+%type <gen> gen rel reg regreg freg shift fcon frcon
+%type <gen> imm ximm name oreg ireg nireg ioreg imsr
+%%
+prog:
+| prog line
+
+line:
+ LLAB ':'
+ {
+ if($1->value != pc)
+ yyerror("redeclaration of %s", $1->name);
+ $1->value = pc;
+ }
+ line
+| LNAME ':'
+ {
+ $1->type = LLAB;
+ $1->value = pc;
+ }
+ line
+| LNAME '=' expr ';'
+ {
+ $1->type = LVAR;
+ $1->value = $3;
+ }
+| LVAR '=' expr ';'
+ {
+ if($1->value != $3)
+ yyerror("redeclaration of %s", $1->name);
+ $1->value = $3;
+ }
+| ';'
+| inst ';'
+| error ';'
+
+inst:
+/*
+ * ADD
+ */
+ LTYPE1 cond imsr ',' spreg ',' reg
+ {
+ outcode($1, $2, &$3, $5, &$7);
+ }
+| LTYPE1 cond imsr ',' spreg ','
+ {
+ outcode($1, $2, &$3, $5, &nullgen);
+ }
+| LTYPE1 cond imsr ',' reg
+ {
+ outcode($1, $2, &$3, NREG, &$5);
+ }
+/*
+ * MVN
+ */
+| LTYPE2 cond imsr ',' reg
+ {
+ outcode($1, $2, &$3, NREG, &$5);
+ }
+/*
+ * MOVW
+ */
+| LTYPE3 cond gen ',' gen
+ {
+ outcode($1, $2, &$3, NREG, &$5);
+ }
+/*
+ * B/BL
+ */
+| LTYPE4 cond comma rel
+ {
+ outcode($1, $2, &nullgen, NREG, &$4);
+ }
+| LTYPE4 cond comma nireg
+ {
+ outcode($1, $2, &nullgen, NREG, &$4);
+ }
+/*
+ * BX
+ */
+| LTYPEBX comma ireg
+ {
+ outcode($1, Always, &nullgen, NREG, &$3);
+ }
+/*
+ * BEQ
+ */
+| LTYPE5 comma rel
+ {
+ outcode($1, Always, &nullgen, NREG, &$3);
+ }
+/*
+ * SWI
+ */
+| LTYPE6 cond comma gen
+ {
+ outcode($1, $2, &nullgen, NREG, &$4);
+ }
+/*
+ * CMP
+ */
+| LTYPE7 cond imsr ',' spreg comma
+ {
+ outcode($1, $2, &$3, $5, &nullgen);
+ }
+/*
+ * MOVM
+ */
+| LTYPE8 cond ioreg ',' '[' reglist ']'
+ {
+ Gen g;
+
+ g = nullgen;
+ g.type = D_CONST;
+ g.offset = $6;
+ outcode($1, $2, &$3, NREG, &g);
+ }
+| LTYPE8 cond '[' reglist ']' ',' ioreg
+ {
+ Gen g;
+
+ g = nullgen;
+ g.type = D_CONST;
+ g.offset = $4;
+ outcode($1, $2, &g, NREG, &$7);
+ }
+/*
+ * SWAP
+ */
+| LTYPE9 cond reg ',' ireg ',' reg
+ {
+ outcode($1, $2, &$5, $3.reg, &$7);
+ }
+| LTYPE9 cond reg ',' ireg comma
+ {
+ outcode($1, $2, &$5, $3.reg, &$3);
+ }
+| LTYPE9 cond comma ireg ',' reg
+ {
+ outcode($1, $2, &$4, $6.reg, &$6);
+ }
+/*
+ * RET
+ */
+| LTYPEA cond comma
+ {
+ outcode($1, $2, &nullgen, NREG, &nullgen);
+ }
+/*
+ * TEXT/GLOBL
+ */
+| LTYPEB name ',' imm
+ {
+ outcode($1, Always, &$2, NREG, &$4);
+ }
+| LTYPEB name ',' con ',' imm
+ {
+ outcode($1, Always, &$2, $4, &$6);
+ }
+/*
+ * DATA
+ */
+| LTYPEC name '/' con ',' ximm
+ {
+ outcode($1, Always, &$2, $4, &$6);
+ }
+/*
+ * CASE
+ */
+| LTYPED cond reg comma
+ {
+ outcode($1, $2, &$3, NREG, &nullgen);
+ }
+/*
+ * word
+ */
+| LTYPEH comma ximm
+ {
+ outcode($1, Always, &nullgen, NREG, &$3);
+ }
+/*
+ * floating-point coprocessor
+ */
+| LTYPEI cond freg ',' freg
+ {
+ outcode($1, $2, &$3, NREG, &$5);
+ }
+| LTYPEK cond frcon ',' freg
+ {
+ outcode($1, $2, &$3, NREG, &$5);
+ }
+| LTYPEK cond frcon ',' LFREG ',' freg
+ {
+ outcode($1, $2, &$3, $5, &$7);
+ }
+| LTYPEL cond freg ',' freg comma
+ {
+ outcode($1, $2, &$3, $5.reg, &nullgen);
+ }
+/*
+ * MCR MRC
+ */
+| LTYPEJ cond con ',' expr ',' spreg ',' creg ',' creg oexpr
+ {
+ Gen g;
+
+ g = nullgen;
+ g.type = D_CONST;
+ g.offset =
+ (0xe << 24) | /* opcode */
+ ($1 << 20) | /* MCR/MRC */
+ ($2 << 28) | /* scond */
+ (($3 & 15) << 8) | /* coprocessor number */
+ (($5 & 7) << 21) | /* coprocessor operation */
+ (($7 & 15) << 12) | /* arm register */
+ (($9 & 15) << 16) | /* Crn */
+ (($11 & 15) << 0) | /* Crm */
+ (($12 & 7) << 5) | /* coprocessor information */
+ (1<<4); /* must be set */
+ outcode(AWORD, Always, &nullgen, NREG, &g);
+ }
+/*
+ * MULL hi,lo,r1,r2
+ */
+| LTYPEM cond reg ',' reg ',' regreg
+ {
+ outcode($1, $2, &$3, $5.reg, &$7);
+ }
+/*
+ * MULA hi,lo,r1,r2
+ */
+| LTYPEN cond reg ',' reg ',' reg ',' spreg
+ {
+ $7.type = D_REGREG;
+ $7.offset = $9;
+ outcode($1, $2, &$3, $5.reg, &$7);
+ }
+/*
+ * END
+ */
+| LTYPEE comma
+ {
+ outcode($1, Always, &nullgen, NREG, &nullgen);
+ }
+
+cond:
+ {
+ $$ = Always;
+ }
+| cond LCOND
+ {
+ $$ = ($1 & ~C_SCOND) | $2;
+ }
+| cond LS
+ {
+ $$ = $1 | $2;
+ }
+
+comma:
+| ',' comma
+
+rel:
+ con '(' LPC ')'
+ {
+ $$ = nullgen;
+ $$.type = D_BRANCH;
+ $$.offset = $1 + pc;
+ }
+| LNAME offset
+ {
+ $$ = nullgen;
+ if(pass == 2)
+ yyerror("undefined label: %s", $1->name);
+ $$.type = D_BRANCH;
+ $$.sym = $1;
+ $$.offset = $2;
+ }
+| LLAB offset
+ {
+ $$ = nullgen;
+ $$.type = D_BRANCH;
+ $$.sym = $1;
+ $$.offset = $1->value + $2;
+ }
+
+ximm: '$' con
+ {
+ $$ = nullgen;
+ $$.type = D_CONST;
+ $$.offset = $2;
+ }
+| '$' oreg
+ {
+ $$ = $2;
+ $$.type = D_CONST;
+ }
+| '$' '*' '$' oreg
+ {
+ $$ = $4;
+ $$.type = D_OCONST;
+ }
+| '$' LSCONST
+ {
+ $$ = nullgen;
+ $$.type = D_SCONST;
+ memcpy($$.sval, $2, sizeof($$.sval));
+ }
+| fcon
+
+fcon:
+ '$' LFCONST
+ {
+ $$ = nullgen;
+ $$.type = D_FCONST;
+ $$.dval = $2;
+ }
+| '$' '-' LFCONST
+ {
+ $$ = nullgen;
+ $$.type = D_FCONST;
+ $$.dval = -$3;
+ }
+
+reglist:
+ spreg
+ {
+ $$ = 1 << $1;
+ }
+| spreg '-' spreg
+ {
+ int i;
+ $$=0;
+ for(i=$1; i<=$3; i++)
+ $$ |= 1<<i;
+ for(i=$3; i<=$1; i++)
+ $$ |= 1<<i;
+ }
+| spreg comma reglist
+ {
+ $$ = (1<<$1) | $3;
+ }
+
+gen:
+ reg
+| ximm
+| shift
+| shift '(' spreg ')'
+ {
+ $$ = $1;
+ $$.reg = $3;
+ }
+| LPSR
+ {
+ $$ = nullgen;
+ $$.type = D_PSR;
+ $$.reg = $1;
+ }
+| LFCR
+ {
+ $$ = nullgen;
+ $$.type = D_FPCR;
+ $$.reg = $1;
+ }
+| con
+ {
+ $$ = nullgen;
+ $$.type = D_OREG;
+ $$.offset = $1;
+ }
+| oreg
+| freg
+
+nireg:
+ ireg
+| name
+ {
+ $$ = $1;
+ if($1.name != D_EXTERN && $1.name != D_STATIC) {
+ }
+ }
+
+ireg:
+ '(' spreg ')'
+ {
+ $$ = nullgen;
+ $$.type = D_OREG;
+ $$.reg = $2;
+ $$.offset = 0;
+ }
+
+ioreg:
+ ireg
+| con '(' sreg ')'
+ {
+ $$ = nullgen;
+ $$.type = D_OREG;
+ $$.reg = $3;
+ $$.offset = $1;
+ }
+
+oreg:
+ name
+| name '(' sreg ')'
+ {
+ $$ = $1;
+ $$.type = D_OREG;
+ $$.reg = $3;
+ }
+| ioreg
+
+imsr:
+ reg
+| imm
+| shift
+
+imm: '$' con
+ {
+ $$ = nullgen;
+ $$.type = D_CONST;
+ $$.offset = $2;
+ }
+
+reg:
+ spreg
+ {
+ $$ = nullgen;
+ $$.type = D_REG;
+ $$.reg = $1;
+ }
+
+regreg:
+ '(' spreg ',' spreg ')'
+ {
+ $$ = nullgen;
+ $$.type = D_REGREG;
+ $$.reg = $2;
+ $$.offset = $4;
+ }
+
+shift:
+ spreg '<' '<' rcon
+ {
+ $$ = nullgen;
+ $$.type = D_SHIFT;
+ $$.offset = $1 | $4 | (0 << 5);
+ }
+| spreg '>' '>' rcon
+ {
+ $$ = nullgen;
+ $$.type = D_SHIFT;
+ $$.offset = $1 | $4 | (1 << 5);
+ }
+| spreg '-' '>' rcon
+ {
+ $$ = nullgen;
+ $$.type = D_SHIFT;
+ $$.offset = $1 | $4 | (2 << 5);
+ }
+| spreg LAT '>' rcon
+ {
+ $$ = nullgen;
+ $$.type = D_SHIFT;
+ $$.offset = $1 | $4 | (3 << 5);
+ }
+
+rcon:
+ spreg
+ {
+ if($$ < 0 || $$ >= 16)
+ print("register value out of range\n");
+ $$ = (($1&15) << 8) | (1 << 4);
+ }
+| con
+ {
+ if($$ < 0 || $$ >= 32)
+ print("shift value out of range\n");
+ $$ = ($1&31) << 7;
+ }
+
+sreg:
+ LREG
+| LPC
+ {
+ $$ = REGPC;
+ }
+| LR '(' expr ')'
+ {
+ if($3 < 0 || $3 >= NREG)
+ print("register value out of range\n");
+ $$ = $3;
+ }
+
+spreg:
+ sreg
+| LSP
+ {
+ $$ = REGSP;
+ }
+
+creg:
+ LCREG
+| LC '(' expr ')'
+ {
+ if($3 < 0 || $3 >= NREG)
+ print("register value out of range\n");
+ $$ = $3;
+ }
+
+frcon:
+ freg
+| fcon
+
+freg:
+ LFREG
+ {
+ $$ = nullgen;
+ $$.type = D_FREG;
+ $$.reg = $1;
+ }
+| LF '(' con ')'
+ {
+ $$ = nullgen;
+ $$.type = D_FREG;
+ $$.reg = $3;
+ }
+
+name:
+ con '(' pointer ')'
+ {
+ $$ = nullgen;
+ $$.type = D_OREG;
+ $$.name = $3;
+ $$.sym = S;
+ $$.offset = $1;
+ }
+| LNAME offset '(' pointer ')'
+ {
+ $$ = nullgen;
+ $$.type = D_OREG;
+ $$.name = $4;
+ $$.sym = $1;
+ $$.offset = $2;
+ }
+| LNAME '<' '>' offset '(' LSB ')'
+ {
+ $$ = nullgen;
+ $$.type = D_OREG;
+ $$.name = D_STATIC;
+ $$.sym = $1;
+ $$.offset = $4;
+ }
+
+offset:
+ {
+ $$ = 0;
+ }
+| '+' con
+ {
+ $$ = $2;
+ }
+| '-' con
+ {
+ $$ = -$2;
+ }
+
+pointer:
+ LSB
+| LSP
+| LFP
+
+con:
+ LCONST
+| LVAR
+ {
+ $$ = $1->value;
+ }
+| '-' con
+ {
+ $$ = -$2;
+ }
+| '+' con
+ {
+ $$ = $2;
+ }
+| '~' con
+ {
+ $$ = ~$2;
+ }
+| '(' expr ')'
+ {
+ $$ = $2;
+ }
+
+oexpr:
+ {
+ $$ = 0;
+ }
+| ',' expr
+ {
+ $$ = $2;
+ }
+
+expr:
+ con
+| expr '+' expr
+ {
+ $$ = $1 + $3;
+ }
+| expr '-' expr
+ {
+ $$ = $1 - $3;
+ }
+| expr '*' expr
+ {
+ $$ = $1 * $3;
+ }
+| expr '/' expr
+ {
+ $$ = $1 / $3;
+ }
+| expr '%' expr
+ {
+ $$ = $1 % $3;
+ }
+| expr '<' '<' expr
+ {
+ $$ = $1 << $4;
+ }
+| expr '>' '>' expr
+ {
+ $$ = $1 >> $4;
+ }
+| expr '&' expr
+ {
+ $$ = $1 & $3;
+ }
+| expr '^' expr
+ {
+ $$ = $1 ^ $3;
+ }
+| expr '|' expr
+ {
+ $$ = $1 | $3;
+ }
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-10 22:04:19 +0000