| /* |
| * ===================================================================== |
| * Copyright (c) 2012, PLUMgrid, http://plumgrid.com |
| * |
| * This source is subject to the PLUMgrid License. |
| * All rights reserved. |
| * |
| * THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF |
| * ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * PLUMgrid confidential information, delete if you are not the |
| * intended recipient. |
| * |
| * ===================================================================== |
| */ |
| |
| #pragma once |
| |
| #include <stdio.h> |
| #include <vector> |
| #include <string> |
| #include <set> |
| |
| #include "cc/node.h" |
| #include "cc/scope.h" |
| |
| namespace ebpf { |
| namespace cc { |
| |
| using std::vector; |
| using std::string; |
| using std::set; |
| |
| class CodegenC : public Visitor { |
| public: |
| CodegenC(FILE* out, Scopes::Ptr scopes, Scopes::Ptr proto_scopes, bool use_pre_header) |
| : out_(out), indent_(0), tmp_reg_index_(0), scopes_(scopes), |
| proto_scopes_(proto_scopes), use_pre_header_(use_pre_header) {} |
| |
| #define VISIT(type, func) virtual void visit_##func(type* n); |
| EXPAND_NODES(VISIT) |
| #undef VISIT |
| |
| virtual int visit(Node* n); |
| |
| void emit_table_lookup(MethodCallExprNode* n); |
| void emit_table_update(MethodCallExprNode* n); |
| void emit_table_delete(MethodCallExprNode* n); |
| void emit_channel_push(MethodCallExprNode* n); |
| void emit_channel_push_generic(MethodCallExprNode* n); |
| void emit_log(MethodCallExprNode* n); |
| void emit_packet_forward(MethodCallExprNode* n); |
| void emit_packet_replicate(MethodCallExprNode* n); |
| void emit_packet_clone_forward(MethodCallExprNode* n); |
| void emit_packet_forward_self(MethodCallExprNode* n); |
| void emit_packet_drop(MethodCallExprNode* n); |
| void emit_packet_broadcast(MethodCallExprNode* n); |
| void emit_packet_multicast(MethodCallExprNode* n); |
| void emit_packet_push_header(MethodCallExprNode* n); |
| void emit_packet_pop_header(MethodCallExprNode* n); |
| void emit_packet_push_vlan(MethodCallExprNode* n); |
| void emit_packet_pop_vlan(MethodCallExprNode* n); |
| void emit_packet_rewrite_field(MethodCallExprNode* n); |
| void emit_atomic_add(MethodCallExprNode* n); |
| void emit_cksum(MethodCallExprNode* n); |
| void emit_incr_cksum_u16(MethodCallExprNode* n); |
| void emit_incr_cksum_u32(MethodCallExprNode* n); |
| void emit_lb_hash(MethodCallExprNode* n); |
| void emit_sizeof(MethodCallExprNode* n); |
| void emit_get_usec_time(MethodCallExprNode* n); |
| void emit_forward_to_vnf(MethodCallExprNode* n); |
| void emit_forward_to_group(MethodCallExprNode* n); |
| void print_parser(); |
| void print_timer(); |
| void print_header(); |
| void print_footer(); |
| |
| private: |
| void indent(); |
| |
| template <typename... Args> void emitln(const char *fmt, Args&&... params); |
| template <typename... Args> void lnemit(const char *fmt, Args&&... params); |
| template <typename... Args> void emit(const char *fmt, Args&&... params); |
| void emitln(const char *s); |
| void lnemit(const char *s); |
| void emit(const char *s); |
| void emit_comment(Node* n); |
| |
| FILE* out_; |
| int indent_; |
| int tmp_reg_index_; |
| Scopes::Ptr scopes_; |
| Scopes::Ptr proto_scopes_; |
| bool use_pre_header_; |
| vector<vector<string> > free_instructions_; |
| vector<string> table_inits_; |
| map<string, string> proto_rewrites_; |
| }; |
| |
| } // namespace cc |
| } // namespace ebpf |