mirror of
https://github.com/ksherlock/mpw.git
synced 2024-10-03 01:58:35 +00:00
209 lines
3.9 KiB
Plaintext
209 lines
3.9 KiB
Plaintext
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%extra_argument { struct Command *command }
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%token_prefix tk
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%token_type {uint32_t}
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%include {
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#include <stdbool.h>
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#include <stdint.h>
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#include <string.h>
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#include "commands.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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uint32_t cpuGetSR();
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uint32_t cpuGetPC();
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uint32_t cpuGetAReg(unsigned);
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uint32_t cpuGetDReg(unsigned);
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uint32_t debuggerReadLong(uint32_t);
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#ifdef __cplusplus
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}
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#endif
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#undef NDEBUG
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}
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%parse_failure {
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fprintf(stderr,"I don't understand.\n");
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command->valid = false;
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}
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%parse_accept {
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command->valid = true;
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}
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%left PIPEPIPE.
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%left AMPAMP.
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%left PIPE.
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%left CARET.
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%left AMP.
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%left EQEQ BANGEQ.
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%left LT LTEQ GT GTEQ.
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%left LTLT GTGT.
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%left PLUS MINUS.
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%left STAR SLASH PERCENT.
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%right BANG TILDE.
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stmt ::= expr(a) EOL.
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{
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command->action = Print;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= PRINT expr(a) EOL.
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{
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command->action = Print;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= BREAK expr(a) EOL.
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{
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command->action = Break;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= CONTINUE EOL.
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{
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command->action = Continue;
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command->argc = 0;
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}
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stmt ::= TBREAK expr(a) EOL.
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{
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// negative number = remove it.
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command->action = TBreak;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= NEXT EOL.
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{
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command->action = Step;
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command->argc = 0;
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}
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stmt ::= NEXT expr(a) EOL.
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{
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command->action = Step;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= DUMP expr(a) EOL.
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{
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command->action = Dump;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= LIST expr(a) EOL.
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{
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command->action = List;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= expr(a) SEMIL EOL.
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{
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command->action = List;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= expr(a) SEMIH EOL.
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{
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command->action = Dump;
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command->argc = 1;
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command->argv[0] = a;
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}
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stmt ::= DREGISTER(a) EQ expr(b) EOL.
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{
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command->action = SetDRegister;
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command->argc = 2;
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command->argv[0] = a;
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command->argv[1] = b;
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}
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stmt ::= AREGISTER(a) EQ expr(b) EOL.
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{
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command->action = SetARegister;
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command->argc = 2;
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command->argv[0] = a;
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command->argv[1] = b;
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}
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stmt ::= XREGISTER(a) EQ expr(b) EOL.
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{
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command->action = SetXRegister;
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command->argc = 2;
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command->argv[0] = a;
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command->argv[1] = b;
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}
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stmt ::= HELP EOL.
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{
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command->action = Help;
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command->argc = 0;
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}
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expr(rhs) ::= unary(a). { rhs = a; }
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expr(rhs) ::= expr(a) PLUS expr(b). { rhs = a + b; }
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expr(rhs) ::= expr(a) MINUS expr(b). { rhs = a - b; }
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expr(rhs) ::= expr(a) STAR expr(b). { rhs = a * b; }
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expr(rhs) ::= expr(a) SLASH expr(b). { rhs = a / b; }
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expr(rhs) ::= expr(a) PERCENT expr(b). { rhs = a % b; }
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expr(rhs) ::= expr(a) LTLT expr(b). { rhs = a << b; }
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expr(rhs) ::= expr(a) GTGT expr(b). { rhs = a >> b; }
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expr(rhs) ::= expr(a) LT expr(b). { rhs = a < b; }
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expr(rhs) ::= expr(a) LTEQ expr(b). { rhs = a <= b; }
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expr(rhs) ::= expr(a) GT expr(b). { rhs = a > b; }
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expr(rhs) ::= expr(a) GTEQ expr(b). { rhs = a >= b; }
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expr(rhs) ::= expr(a) EQEQ expr(b). { rhs = a == b; }
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expr(rhs) ::= expr(a) BANGEQ expr(b). { rhs = a != b; }
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expr(rhs) ::= expr(a) AMP expr(b). { rhs = a & b; }
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expr(rhs) ::= expr(a) CARET expr(b). { rhs = a ^ b; }
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expr(rhs) ::= expr(a) PIPE expr(b). { rhs = a | b; }
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expr(rhs) ::= expr(a) AMPAMP expr(b). { rhs = a && b; }
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expr(rhs) ::= expr(a) PIPEPIPE expr(b). { rhs = a || b; }
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unary(rhs) ::= term(a). { rhs = a; }
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unary(rhs) ::= PLUS unary(a). [BANG] { rhs = a; }
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unary(rhs) ::= MINUS unary(a). [BANG] { rhs = -a; }
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unary(rhs) ::= TILDE unary(a). { rhs = ~a; }
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unary(rhs) ::= BANG unary(a). { rhs = !a; }
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unary(rhs) ::= STAR unary(a). [BANG] { rhs = debuggerReadLong(a); }
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term(rhs) ::= LPAREN expr(a) RPAREN. { rhs = a; }
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term(rhs) ::= INTEGER(a). { rhs = a; }
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term(rhs) ::= DREGISTER(a). { rhs = cpuGetDReg(a); }
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term(rhs) ::= AREGISTER(a). { rhs = cpuGetAReg(a); }
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term(rhs) ::= XREGISTER(a).
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{
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switch(a)
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{
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case 0:
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rhs = cpuGetPC();
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break;
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case 1:
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rhs = cpuGetSR();
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break;
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default:
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rhs = 0;
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}
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}
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