sysio::vm::bitcode_writer::br_table_parser Struct Reference

#include <bitcode_writer.hpp>

Collaboration diagram for sysio::vm::bitcode_writer::br_table_parser:

Public Member Functions
	br_table_parser (bitcode_writer &base, uint32_t table_size)
uint32_t *	emit_case (uint32_t depth_change)
uint32_t *	emit_default (uint32_t depth_change)
	br_table_parser (const br_table_parser &)=delete
br_table_parser &	operator= (const br_table_parser &)=delete
	br_table_parser (bitcode_writer &base, uint32_t table_size)
uint32_t *	emit_case (uint32_t depth_change)
uint32_t *	emit_default (uint32_t depth_change)
	br_table_parser (const br_table_parser &)=delete
br_table_parser &	operator= (const br_table_parser &)=delete

Public Attributes
br_table_t::elem_t *	_br_tab
bitcode_writer *	_this
std::size_t	_i

Detailed Description

Definition at line 58 of file bitcode_writer.hpp.

Constructor & Destructor Documentation

br_table_parser() [1/4]

sysio::vm::bitcode_writer::br_table_parser::br_table_parser ( bitcode_writer & base, uint32_t table_size )

inline

Definition at line 59 of file bitcode_writer.hpp.

                                                                    :
            _this{ &base },
            _i{ 0 } {
            br_table_t& bt = _this->append_instr(br_table_t{});
            bt.offset = static_cast<uint32_t>(((table_size * sizeof(br_table_t::elem_t))/sizeof(opcode))+2);
 
            // point the branch table data to after the br_table instruction
            _br_tab = bt.table = reinterpret_cast<br_table_t::elem_t*>(&_this->fb[_this->op_index]);
 
            _this->op_index += bt.offset;
 
            // canary to throw if we have overbounded our allocated memory
            _this->fb[_this->op_index] = error_t{};
            bt.size           = table_size;
         }

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br_table_parser() [2/4]

sysio::vm::bitcode_writer::br_table_parser::br_table_parser ( const br_table_parser & )

delete

br_table_parser() [3/4]

sysio::vm::bitcode_writer::br_table_parser::br_table_parser ( bitcode_writer & base, uint32_t table_size )

inline

Definition at line 59 of file bitcode_writer.hpp.

                                                                    :
            _this{ &base },
            _i{ 0 } {
            br_table_t& bt = _this->append_instr(br_table_t{});
            bt.offset = static_cast<uint32_t>(((table_size * sizeof(br_table_t::elem_t))/sizeof(opcode))+2);
 
            // point the branch table data to after the br_table instruction
            _br_tab = bt.table = reinterpret_cast<br_table_t::elem_t*>(&_this->fb[_this->op_index]);
 
            _this->op_index += bt.offset;
 
            // canary to throw if we have overbounded our allocated memory
            _this->fb[_this->op_index] = error_t{};
            bt.size           = table_size;
         }

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br_table_parser() [4/4]

sysio::vm::bitcode_writer::br_table_parser::br_table_parser ( const br_table_parser & )

delete

Member Function Documentation

emit_case() [1/2]

uint32_t * sysio::vm::bitcode_writer::br_table_parser::emit_case ( uint32_t depth_change )

inline

Definition at line 74 of file bitcode_writer.hpp.

                                                     {
            auto& elem = _br_tab[_i++];
            elem.stack_pop = depth_change;
            return &elem.pc;
         }

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emit_case() [2/2]

uint32_t * sysio::vm::bitcode_writer::br_table_parser::emit_case ( uint32_t depth_change )

inline

Definition at line 74 of file bitcode_writer.hpp.

                                                     {
            auto& elem = _br_tab[_i++];
            elem.stack_pop = depth_change;
            return &elem.pc;
         }

emit_default() [1/2]

uint32_t * sysio::vm::bitcode_writer::br_table_parser::emit_default ( uint32_t depth_change )

inline

Definition at line 80 of file bitcode_writer.hpp.

                                                       {
            auto result = emit_case(depth_change);
            SYS_VM_ASSERT(_this->fb[_this->op_index].is_a<error_t>(), wasm_parse_exception, "overwrote br_table data");
            return result;
         }

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emit_default() [2/2]

uint32_t * sysio::vm::bitcode_writer::br_table_parser::emit_default ( uint32_t depth_change )

inline

Definition at line 80 of file bitcode_writer.hpp.

                                                       {
            auto result = emit_case(depth_change);
            SYS_VM_ASSERT(_this->fb[_this->op_index].is_a<error_t>(), wasm_parse_exception, "overwrote br_table data");
            return result;
         }

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operator=() [1/2]

br_table_parser & sysio::vm::bitcode_writer::br_table_parser::operator= ( const br_table_parser & )

delete

operator=() [2/2]

br_table_parser & sysio::vm::bitcode_writer::br_table_parser::operator= ( const br_table_parser & )

delete

Member Data Documentation

_br_tab

br_table_t::elem_t * sysio::vm::bitcode_writer::br_table_parser::_br_tab

Definition at line 85 of file bitcode_writer.hpp.

_i

std::size_t sysio::vm::bitcode_writer::br_table_parser::_i

Definition at line 87 of file bitcode_writer.hpp.

_this

bitcode_writer * sysio::vm::bitcode_writer::br_table_parser::_this

Definition at line 86 of file bitcode_writer.hpp.

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The documentation for this struct was generated from the following files:

• libraries/sys-vm/include/sysio/sysio/vm/bitcode_writer.hpp
• libraries/sys-vm/include/sysio/vm/bitcode_writer.hpp