/* * BPF asm code lexer * * This program is free software; you can distribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2 of the License, * or (at your option) any later version. * * Syntax kept close to: * * Steven McCanne and Van Jacobson. 1993. The BSD packet filter: a new * architecture for user-level packet capture. In Proceedings of the * USENIX Winter 1993 Conference Proceedings on USENIX Winter 1993 * Conference Proceedings (USENIX'93). USENIX Association, Berkeley, * CA, USA, 2-2. * * Copyright 2013 Daniel Borkmann * Licensed under the GNU General Public License, version 2.0 (GPLv2) */ %{ #include #include #include #include #include #include "bpf_exp.yacc.h" extern void yyerror(const char *str); %} %option align %option ecs %option nounput %option noreject %option noinput %option noyywrap %option 8bit %option caseless %option yylineno %% "ldb" { return OP_LDB; } "ldh" { return OP_LDH; } "ld" { return OP_LD; } "ldi" { return OP_LDI; } "ldx" { return OP_LDX; } "ldxi" { return OP_LDXI; } "ldxb" { return OP_LDXB; } "st" { return OP_ST; } "stx" { return OP_STX; } "jmp" { return OP_JMP; } "ja" { return OP_JMP; } "jeq" { return OP_JEQ; } "jneq" { return OP_JNEQ; } "jne" { return OP_JNEQ; } "jlt" { return OP_JLT; } "jle" { return OP_JLE; } "jgt" { return OP_JGT; } "jge" { return OP_JGE; } "jset" { return OP_JSET; } "add" { return OP_ADD; } "sub" { return OP_SUB; } "mul" { return OP_MUL; } "div" { return OP_DIV; } "mod" { return OP_MOD; } "neg" { return OP_NEG; } "and" { return OP_AND; } "xor" { return OP_XOR; } "or" { return OP_OR; } "lsh" { return OP_LSH; } "rsh" { return OP_RSH; } "ret" { return OP_RET; } "tax" { return OP_TAX; } "txa" { return OP_TXA; } "#"?("len") { return K_PKT_LEN; } "#"?("proto") { yylval.number = SKF_AD_PROTOCOL; return extension; } "#"?("type") { yylval.number = SKF_AD_PKTTYPE; return extension; } "#"?("poff") { yylval.number = SKF_AD_PAY_OFFSET; return extension; } "#"?("ifidx") { yylval.number = SKF_AD_IFINDEX; return extension; } "#"?("nla") { yylval.number = SKF_AD_NLATTR; return extension; } "#"?("nlan") { yylval.number = SKF_AD_NLATTR_NEST; return extension; } "#"?("mark") { yylval.number = SKF_AD_MARK; return extension; } "#"?("queue") { yylval.number = SKF_AD_QUEUE; return extension; } "#"?("hatype") { yylval.number = SKF_AD_HATYPE; return extension; } "#"?("rxhash") { yylval.number = SKF_AD_RXHASH; return extension; } "#"?("cpu") { yylval.number = SKF_AD_CPU; return extension; } "#"?("vlan_tci") { yylval.number = SKF_AD_VLAN_TAG; return extension; } "#"?("vlan_pr") { yylval.number = SKF_AD_VLAN_TAG_PRESENT; return extension; } "#"?("vlan_avail") { yylval.number = SKF_AD_VLAN_TAG_PRESENT; return extension; } "#"?("vlan_tpid") { yylval.number = SKF_AD_VLAN_TPID; return extension; } "#"?("rand") { yylval.number = SKF_AD_RANDOM; return extension; } ":" { return ':'; } "," { return ','; } "#" { return '#'; } "%" { return '%'; } "[" { return '['; } "]" { return ']'; } "(" { return '('; } ")" { return ')'; } "x" { return 'x'; } "a" { return 'a'; } "+" { return '+'; } "M" { return 'M'; } "*" { return '*'; } "&" { return '&'; } ([0][x][a-fA-F0-9]+) { yylval.number = strtoul(yytext, NULL, 16); return number; } ([0][b][0-1]+) { yylval.number = strtol(yytext + 2, NULL, 2); return number; } (([0])|([-+]?[1-9][0-9]*)) { yylval.number = strtol(yytext, NULL, 10); return number; } ([0][0-9]+) { yylval.number = strtol(yytext + 1, NULL, 8); return number; } [a-zA-Z_][a-zA-Z0-9_]+ { yylval.label = strdup(yytext); return label; } "/*"([^\*]|\*[^/])*"*/" { /* NOP */ } ";"[^\n]* { /* NOP */ } ^#.* { /* NOP */ } [ \t]+ { /* NOP */ } [ \n]+ { /* NOP */ } . { printf("unknown character \'%s\'", yytext); yyerror("lex unknown character"); } %% space:mode:
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /sound/soc/codecs/tpa6130a2.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'sound/soc/codecs/tpa6130a2.h')