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Add break, cont, and halt instructions.

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Eric Anholt 2006-09-01 13:37:51 -07:00 committed by Damien Lespiau
parent 9201e4e2a0
commit 4ee9c3d869
2 changed files with 41 additions and 5 deletions
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1
assembler/TODO
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@ -8,3 +8,4 @@
- boolean types
- replace GL* with non-GL?
- labels for branch/jump instruction destinations
- break/cont syntax should be better.

45
assembler/src/gram.y
View File

@ -116,12 +116,12 @@ void set_direct_src_operand(struct src_operand *src, struct direct_reg *reg,
%type <instruction> instruction unaryinstruction binaryinstruction
%type <instruction> binaryaccinstruction triinstruction sendinstruction
%type <instruction> jumpinstruction branchloopinstruction elseinstruction
%type <instruction> syncinstruction specialinstruction
%type <instruction> breakinstruction syncinstruction specialinstruction
%type <instruction> msgtarget
%type <instruction> instoptions instoption_list predicate
%type <program> instrseq
%type <integer> instoption
%type <integer> unaryop binaryop binaryaccop branchloopop
%type <integer> unaryop binaryop binaryaccop branchloopop breakop
%type <integer> conditionalmodifier saturate negate abs chansel
%type <integer> writemask_x writemask_y writemask_z writemask_w
%type <integer> regtype srcimmtype execsize dstregion immaddroffset
@ -141,7 +141,7 @@ void set_direct_src_operand(struct src_operand *src, struct direct_reg *reg,
%type <src_operand> directsrcoperand srcarchoperandex directsrcaccoperand
%type <src_operand> indirectsrcoperand
%type <src_operand> src srcimm imm32reg payload srcacc srcaccimm swizzle
%type <src_operand> relativelocation relativelocation2
%type <src_operand> relativelocation relativelocation2 locationstackcontrol
%%
ROOT: instrseq
@ -185,6 +185,7 @@ instruction: unaryinstruction
| jumpinstruction
| branchloopinstruction
| elseinstruction
| breakinstruction
| syncinstruction
| specialinstruction
;
@ -376,7 +377,32 @@ elseinstruction: ELSE relativelocation
}
;
breakop: BREAK | CONT | WAIT
breakinstruction: breakop locationstackcontrol
{
struct direct_reg dst;
struct dst_operand ip_dst;
struct src_operand ip_src;
/* The jump instruction requires that the IP register
* be the destination and first source operand, while the
* offset is the second source operand. The offset is added
* to the IP pre-increment.
*/
dst.reg_file = BRW_ARCHITECTURE_REGISTER_FILE;
dst.reg_nr = BRW_ARF_IP;
dst.subreg_nr = 0;
bzero(&$$, sizeof($$));
$$.header.opcode = $1;
set_direct_dst_operand(&ip_dst, &dst, BRW_REGISTER_TYPE_UD);
set_instruction_dest(&$$, &ip_dst);
set_direct_src_operand(&ip_src, &dst, BRW_REGISTER_TYPE_UD);
set_instruction_src0(&$$, &ip_src);
set_instruction_src1(&$$, &$2);
}
;
breakop: BREAK | CONT | HALT
;
maskpushop: MSAVE | PUSH
@ -1031,7 +1057,7 @@ relativelocation: imm32
{
if ($1 > 32767 || $1 < -32768) {
fprintf(stderr,
"error: relative offset %d out of range\n");
"error: relative offset %d out of range\n", $1);
YYERROR;
}
@ -1057,6 +1083,15 @@ relativelocation2:
}
;
locationstackcontrol:
imm32
{
$$.reg_file = BRW_IMMEDIATE_VALUE;
$$.reg_type = BRW_REGISTER_TYPE_D;
$$.imm32 = $1;
}
;
/* 1.4.7: Regions */
dstregion: LANGLE INTEGER RANGLE
{