diff options
Diffstat (limited to 'src/cmd/6a/a.y')
| -rw-r--r-- | src/cmd/6a/a.y | 383 |
1 files changed, 192 insertions, 191 deletions
diff --git a/src/cmd/6a/a.y b/src/cmd/6a/a.y index df3ca40b2c..bd59a1faba 100644 --- a/src/cmd/6a/a.y +++ b/src/cmd/6a/a.y @@ -29,20 +29,24 @@ // THE SOFTWARE. %{ -#include <u.h> -#include <stdio.h> /* if we don't, bison will, and a.h re-#defines getc */ -#include <libc.h> -#include "a.h" -#include "../../runtime/funcdata.h" +package main + +import ( + "cmd/internal/asm" + "cmd/internal/obj" + "cmd/internal/obj/x86" +) %} -%union { - Sym *sym; - vlong lval; - double dval; - char sval[8]; - Addr addr; - Addr2 addr2; + +%union { + sym *asm.Sym + lval int64 + dval float64 + sval string + addr obj.Addr + addr2 Addr2 } + %left '|' %left '^' %left '&' @@ -58,7 +62,7 @@ %token <sval> LSCONST LSP %token <sym> LNAME LLAB LVAR %type <lval> con expr pointer offset -%type <addr> mem imm reg nam rel rem rim rom omem nmem textsize +%type <addr> mem imm textsize reg nam rel rem rim rom omem nmem %type <addr2> nonnon nonrel nonrem rimnon rimrem remrim %type <addr2> spec3 spec4 spec5 spec6 spec7 spec8 spec9 %type <addr2> spec10 spec12 spec13 @@ -66,18 +70,19 @@ prog: | prog { - stmtline = lineno; + stmtline = asm.Lineno; } line line: LNAME ':' { - $1 = labellookup($1); - if($1->type == LLAB && $1->value != pc) - yyerror("redeclaration of %s (%s)", $1->labelname, $1->name); - $1->type = LLAB; - $1->value = pc; + $1 = asm.LabelLookup($1); + if $1.Type == LLAB && $1.Value != int64(asm.PC) { + yyerror("redeclaration of %s (%s)", $1.Labelname, $1.Name); + } + $1.Type = LLAB; + $1.Value = int64(asm.PC) } line | ';' @@ -87,34 +92,35 @@ line: inst: LNAME '=' expr { - $1->type = LVAR; - $1->value = $3; + $1.Type = LVAR; + $1.Value = $3; } | LVAR '=' expr { - if($1->value != $3) - yyerror("redeclaration of %s", $1->name); - $1->value = $3; - } -| LTYPE0 nonnon { outcode($1, &$2); } -| LTYPE1 nonrem { outcode($1, &$2); } -| LTYPE2 rimnon { outcode($1, &$2); } -| LTYPE3 rimrem { outcode($1, &$2); } -| LTYPE4 remrim { outcode($1, &$2); } -| LTYPER nonrel { outcode($1, &$2); } + if $1.Value != $3 { + yyerror("redeclaration of %s", $1.Name); + } + $1.Value = $3; + } +| LTYPE0 nonnon { outcode(int($1), &$2); } +| LTYPE1 nonrem { outcode(int($1), &$2); } +| LTYPE2 rimnon { outcode(int($1), &$2); } +| LTYPE3 rimrem { outcode(int($1), &$2); } +| LTYPE4 remrim { outcode(int($1), &$2); } +| LTYPER nonrel { outcode(int($1), &$2); } | spec1 | spec2 -| LTYPEC spec3 { outcode($1, &$2); } -| LTYPEN spec4 { outcode($1, &$2); } -| LTYPES spec5 { outcode($1, &$2); } -| LTYPEM spec6 { outcode($1, &$2); } -| LTYPEI spec7 { outcode($1, &$2); } -| LTYPEXC spec8 { outcode($1, &$2); } -| LTYPEX spec9 { outcode($1, &$2); } -| LTYPERT spec10 { outcode($1, &$2); } +| LTYPEC spec3 { outcode(int($1), &$2); } +| LTYPEN spec4 { outcode(int($1), &$2); } +| LTYPES spec5 { outcode(int($1), &$2); } +| LTYPEM spec6 { outcode(int($1), &$2); } +| LTYPEI spec7 { outcode(int($1), &$2); } +| LTYPEXC spec8 { outcode(int($1), &$2); } +| LTYPEX spec9 { outcode(int($1), &$2); } +| LTYPERT spec10 { outcode(int($1), &$2); } | spec11 -| LTYPEPC spec12 { outcode($1, &$2); } -| LTYPEF spec13 { outcode($1, &$2); } +| LTYPEPC spec12 { outcode(int($1), &$2); } +| LTYPEF spec13 { outcode(int($1), &$2); } nonnon: { @@ -185,57 +191,45 @@ nonrel: spec1: /* DATA */ LTYPED nam '/' con ',' imm { - Addr2 a; - a.from = $2; - a.to = $6; - outcode(ADATA, &a); - if(pass > 1) { - lastpc->from3.type = TYPE_CONST; - lastpc->from3.offset = $4; + var a Addr2 + a.from = $2 + a.to = $6 + outcode(obj.ADATA, &a) + if asm.Pass > 1 { + lastpc.From3.Type = obj.TYPE_CONST + lastpc.From3.Offset = $4 } } spec2: /* TEXT */ LTYPET mem ',' '$' textsize { - Addr2 a; - settext($2.sym); - a.from = $2; - a.to = $5; - outcode(ATEXT, &a); + asm.Settext($2.Sym); + outcode(obj.ATEXT, &Addr2{$2, $5}) } | LTYPET mem ',' con ',' '$' textsize { - Addr2 a; - settext($2.sym); - a.from = $2; - a.to = $7; - outcode(ATEXT, &a); - if(pass > 1) { - lastpc->from3.type = TYPE_CONST; - lastpc->from3.offset = $4; + asm.Settext($2.Sym); + outcode(obj.ATEXT, &Addr2{$2, $7}) + if asm.Pass > 1 { + lastpc.From3.Type = obj.TYPE_CONST + lastpc.From3.Offset = $4 } } spec11: /* GLOBL */ LTYPEG mem ',' imm { - Addr2 a; - settext($2.sym); - a.from = $2; - a.to = $4; - outcode(AGLOBL, &a); + asm.Settext($2.Sym) + outcode(obj.AGLOBL, &Addr2{$2, $4}) } | LTYPEG mem ',' con ',' imm { - Addr2 a; - settext($2.sym); - a.from = $2; - a.to = $6; - outcode(AGLOBL, &a); - if(pass > 1) { - lastpc->from3.type = TYPE_CONST; - lastpc->from3.offset = $4; + asm.Settext($2.Sym) + outcode(obj.AGLOBL, &Addr2{$2, $6}) + if asm.Pass > 1 { + lastpc.From3.Type = obj.TYPE_CONST + lastpc.From3.Offset = $4 } } @@ -265,9 +259,10 @@ spec5: /* SHL/SHR */ { $$.from = $1; $$.to = $3; - if($$.from.index != TYPE_NONE) + if $$.from.Index != obj.TYPE_NONE { yyerror("dp shift with lhs index"); - $$.from.index = $5; + } + $$.from.Index = int16($5); } spec6: /* MOVW/MOVL */ @@ -280,9 +275,10 @@ spec6: /* MOVW/MOVL */ { $$.from = $1; $$.to = $3; - if($$.to.index != TYPE_NONE) + if $$.to.Index != obj.TYPE_NONE { yyerror("dp move with lhs index"); - $$.to.index = $5; + } + $$.to.Index = int16($5); } spec7: @@ -307,7 +303,7 @@ spec8: /* CMPPS/CMPPD */ { $$.from = $1; $$.to = $3; - $$.to.offset = $5; + $$.to.Offset = $5; } spec9: /* shufl */ @@ -315,9 +311,10 @@ spec9: /* shufl */ { $$.from = $3; $$.to = $5; - if($1.type != TYPE_CONST) + if $1.Type != obj.TYPE_CONST { yyerror("illegal constant"); - $$.to.offset = $1.offset; + } + $$.to.Offset = $1.Offset; } spec10: /* RET/RETF */ @@ -331,11 +328,12 @@ spec10: /* RET/RETF */ $$.to = nullgen; } -spec12: /* PCDATA */ +spec12: /* asm.PCDATA */ rim ',' rim { - if($1.type != TYPE_CONST || $3.type != TYPE_CONST) - yyerror("arguments to PCDATA must be integer constants"); + if $1.Type != obj.TYPE_CONST || $3.Type != obj.TYPE_CONST { + yyerror("arguments to asm.PCDATA must be integer constants"); + } $$.from = $1; $$.to = $3; } @@ -343,10 +341,12 @@ spec12: /* PCDATA */ spec13: /* FUNCDATA */ rim ',' rim { - if($1.type != TYPE_CONST) + if $1.Type != obj.TYPE_CONST { yyerror("index for FUNCDATA must be integer constant"); - if($3.type != TYPE_MEM || ($3.name != NAME_EXTERN && $3.name != NAME_STATIC)) + } + if $3.Type != obj.TYPE_MEM || ($3.Name != obj.NAME_EXTERN && $3.Name != obj.NAME_STATIC) { yyerror("value for FUNCDATA must be symbol reference"); + } $$.from = $1; $$.to = $3; } @@ -377,109 +377,110 @@ rel: con '(' LPC ')' { $$ = nullgen; - $$.type = TYPE_BRANCH; - $$.offset = $1 + pc; + $$.Type = obj.TYPE_BRANCH; + $$.Offset = $1 + int64(asm.PC); } | LNAME offset { - $1 = labellookup($1); + $1 = asm.LabelLookup($1); $$ = nullgen; - if(pass == 2 && $1->type != LLAB) - yyerror("undefined label: %s", $1->labelname); - $$.type = TYPE_BRANCH; - $$.offset = $1->value + $2; + if asm.Pass == 2 && $1.Type != LLAB { + yyerror("undefined label: %s", $1.Labelname); + } + $$.Type = obj.TYPE_BRANCH; + $$.Offset = $1.Value + $2; } reg: LBREG { $$ = nullgen; - $$.type = TYPE_REG; - $$.reg = $1; + $$.Type = obj.TYPE_REG + $$.Reg = int16($1); } | LFREG { $$ = nullgen; - $$.type = TYPE_REG; - $$.reg = $1; + $$.Type = obj.TYPE_REG + $$.Reg = int16($1); } | LLREG { $$ = nullgen; - $$.type = TYPE_REG; - $$.reg = $1; + $$.Type = obj.TYPE_REG + $$.Reg = int16($1); } | LMREG { $$ = nullgen; - $$.type = TYPE_REG; - $$.reg = $1; + $$.Type = obj.TYPE_REG + $$.Reg = int16($1); } | LSP { $$ = nullgen; - $$.type = TYPE_REG; - $$.reg = REG_SP; + $$.Type = obj.TYPE_REG + $$.Reg = x86.REG_SP; } | LSREG { $$ = nullgen; - $$.type = TYPE_REG; - $$.reg = $1; + $$.Type = obj.TYPE_REG + $$.Reg = int16($1); } | LXREG { $$ = nullgen; - $$.type = TYPE_REG; - $$.reg = $1; + $$.Type = obj.TYPE_REG + $$.Reg = int16($1); } imm: '$' con { $$ = nullgen; - $$.type = TYPE_CONST; - $$.offset = $2; + $$.Type = obj.TYPE_CONST; + $$.Offset = $2; } | '$' nam { $$ = $2; - $$.type = TYPE_ADDR; + $$.Type = obj.TYPE_ADDR; /* - if($2.type == D_AUTO || $2.type == D_PARAM) + if($2.Type == x86.D_AUTO || $2.Type == x86.D_PARAM) yyerror("constant cannot be automatic: %s", - $2.sym->name); + $2.sym.Name); */ } | '$' LSCONST { $$ = nullgen; - $$.type = TYPE_SCONST; - memcpy($$.u.sval, $2, sizeof($$.u.sval)); + $$.Type = obj.TYPE_SCONST; + $$.U.Sval = ($2+"\x00\x00\x00\x00\x00\x00\x00\x00")[:8] } | '$' LFCONST { $$ = nullgen; - $$.type = TYPE_FCONST; - $$.u.dval = $2; + $$.Type = obj.TYPE_FCONST; + $$.U.Dval = $2; } | '$' '(' LFCONST ')' { $$ = nullgen; - $$.type = TYPE_FCONST; - $$.u.dval = $3; + $$.Type = obj.TYPE_FCONST; + $$.U.Dval = $3; } | '$' '(' '-' LFCONST ')' { $$ = nullgen; - $$.type = TYPE_FCONST; - $$.u.dval = -$4; + $$.Type = obj.TYPE_FCONST; + $$.U.Dval = -$4; } | '$' '-' LFCONST { $$ = nullgen; - $$.type = TYPE_FCONST; - $$.u.dval = -$3; + $$.Type = obj.TYPE_FCONST; + $$.U.Dval = -$3; } mem: @@ -490,87 +491,87 @@ omem: con { $$ = nullgen; - $$.type = TYPE_MEM; - $$.offset = $1; + $$.Type = obj.TYPE_MEM + $$.Offset = $1; } | con '(' LLREG ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.reg = $3; - $$.offset = $1; + $$.Type = obj.TYPE_MEM + $$.Reg = int16($3) + $$.Offset = $1; } | con '(' LSP ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.reg = REG_SP; - $$.offset = $1; + $$.Type = obj.TYPE_MEM + $$.Reg = x86.REG_SP + $$.Offset = $1; } | con '(' LSREG ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.reg = $3; - $$.offset = $1; + $$.Type = obj.TYPE_MEM + $$.Reg = int16($3) + $$.Offset = $1; } | con '(' LLREG '*' con ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.offset = $1; - $$.index = $3; - $$.scale = $5; - checkscale($$.scale); + $$.Type = obj.TYPE_MEM + $$.Offset = $1; + $$.Index = int16($3); + $$.Scale = int8($5); + checkscale($$.Scale); } | con '(' LLREG ')' '(' LLREG '*' con ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.reg = $3; - $$.offset = $1; - $$.index = $6; - $$.scale = $8; - checkscale($$.scale); + $$.Type = obj.TYPE_MEM + $$.Reg = int16($3) + $$.Offset = $1; + $$.Index = int16($6); + $$.Scale = int8($8); + checkscale($$.Scale); } | con '(' LLREG ')' '(' LSREG '*' con ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.reg = $3; - $$.offset = $1; - $$.index = $6; - $$.scale = $8; - checkscale($$.scale); + $$.Type = obj.TYPE_MEM + $$.Reg = int16($3) + $$.Offset = $1; + $$.Index = int16($6); + $$.Scale = int8($8); + checkscale($$.Scale); } | '(' LLREG ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.reg = $2; + $$.Type = obj.TYPE_MEM + $$.Reg = int16($2) } | '(' LSP ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.reg = REG_SP; + $$.Type = obj.TYPE_MEM + $$.Reg = x86.REG_SP } | '(' LLREG '*' con ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.index = $2; - $$.scale = $4; - checkscale($$.scale); + $$.Type = obj.TYPE_MEM + $$.Index = int16($2); + $$.Scale = int8($4); + checkscale($$.Scale); } | '(' LLREG ')' '(' LLREG '*' con ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.reg = $2; - $$.index = $5; - $$.scale = $7; - checkscale($$.scale); + $$.Type = obj.TYPE_MEM + $$.Reg = int16($2) + $$.Index = int16($5); + $$.Scale = int8($7); + checkscale($$.Scale); } nmem: @@ -581,27 +582,27 @@ nmem: | nam '(' LLREG '*' con ')' { $$ = $1; - $$.index = $3; - $$.scale = $5; - checkscale($$.scale); + $$.Index = int16($3); + $$.Scale = int8($5); + checkscale($$.Scale); } nam: LNAME offset '(' pointer ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.name = $4; - $$.sym = linklookup(ctxt, $1->name, 0); - $$.offset = $2; + $$.Type = obj.TYPE_MEM + $$.Name = int8($4) + $$.Sym = obj.Linklookup(asm.Ctxt, $1.Name, 0); + $$.Offset = $2; } | LNAME '<' '>' offset '(' LSB ')' { $$ = nullgen; - $$.type = TYPE_MEM; - $$.name = NAME_STATIC; - $$.sym = linklookup(ctxt, $1->name, 1); - $$.offset = $4; + $$.Type = obj.TYPE_MEM + $$.Name = obj.NAME_STATIC + $$.Sym = obj.Linklookup(asm.Ctxt, $1.Name, 1); + $$.Offset = $4; } offset: @@ -621,7 +622,7 @@ pointer: LSB | LSP { - $$ = NAME_AUTO; + $$ = obj.NAME_AUTO; } | LFP @@ -629,7 +630,7 @@ con: LCONST | LVAR { - $$ = $1->value; + $$ = $1.Value; } | '-' con { @@ -641,7 +642,7 @@ con: } | '~' con { - $$ = ~$2; + $$ = ^$2; } | '(' expr ')' { @@ -652,30 +653,30 @@ textsize: LCONST { $$ = nullgen; - $$.type = TYPE_TEXTSIZE; - $$.offset = $1; - $$.u.argsize = ArgsSizeUnknown; + $$.Type = obj.TYPE_TEXTSIZE; + $$.Offset = $1; + $$.U.Argsize = obj.ArgsSizeUnknown; } | '-' LCONST { $$ = nullgen; - $$.type = TYPE_TEXTSIZE; - $$.offset = -$2; - $$.u.argsize = ArgsSizeUnknown; + $$.Type = obj.TYPE_TEXTSIZE; + $$.Offset = -$2; + $$.U.Argsize = obj.ArgsSizeUnknown; } | LCONST '-' LCONST { $$ = nullgen; - $$.type = TYPE_TEXTSIZE; - $$.offset = $1; - $$.u.argsize = $3; + $$.Type = obj.TYPE_TEXTSIZE; + $$.Offset = $1; + $$.U.Argsize = int32($3); } | '-' LCONST '-' LCONST { $$ = nullgen; - $$.type = TYPE_TEXTSIZE; - $$.offset = -$2; - $$.u.argsize = $4; + $$.Type = obj.TYPE_TEXTSIZE; + $$.Offset = -$2; + $$.U.Argsize = int32($4); } expr: @@ -702,11 +703,11 @@ expr: } | expr '<' '<' expr { - $$ = $1 << $4; + $$ = $1 << uint($4); } | expr '>' '>' expr { - $$ = $1 >> $4; + $$ = $1 >> uint($4); } | expr '&' expr { |