asan_redzone_buffer Class Reference

Collaboration diagram for asan_redzone_buffer:

Public Member Functions
	asan_redzone_buffer (rtx shadow_mem, HOST_WIDE_INT prev_offset)
void	emit_redzone_byte (HOST_WIDE_INT offset, unsigned char value)
void	flush_redzone_payload (void)

Data Fields
auto_vec< unsigned char >	m_shadow_bytes

Private Member Functions
void	flush_if_full (void)

Private Attributes
rtx	m_shadow_mem
HOST_WIDE_INT	m_prev_offset
HOST_WIDE_INT	m_original_offset

Detailed Description

ASAN redzone buffer container that handles emission of shadow bytes.   

Constructor & Destructor Documentation

asan_redzone_buffer()

asan_redzone_buffer::asan_redzone_buffer ( rtx shadow_mem, HOST_WIDE_INT prev_offset )

inline

Member Function Documentation

emit_redzone_byte()

void asan_redzone_buffer::emit_redzone_byte	(	HOST_WIDE_INT	offset,
		unsigned char	value )

Emit VALUE shadow byte at a given OFFSET.   

References adjust_address, ASAN_RED_ZONE_SIZE, ASAN_SHADOW_GRANULARITY, ASAN_SHADOW_SHIFT, flush_if_full(), flush_redzone_payload(), gcc_assert, i, m_prev_offset, m_shadow_bytes, m_shadow_mem, offset, and RZ_BUFFER_SIZE.

Referenced by asan_emit_stack_protection().

flush_if_full()

void asan_redzone_buffer::flush_if_full ( void )

private

Flush if the content of the buffer is full
(equal to RZ_BUFFER_SIZE).   

References flush_redzone_payload(), m_shadow_bytes, and RZ_BUFFER_SIZE.

Referenced by emit_redzone_byte().

flush_redzone_payload()

void asan_redzone_buffer::flush_redzone_payload

(

void

)

Emit RTX emission of the content of the buffer.   

References adjust_address, ASAN_RED_ZONE_SIZE, dump_file, dump_flags, emit_move_insn(), gcc_assert, gen_int_mode(), i, m_original_offset, m_prev_offset, m_shadow_bytes, m_shadow_mem, PRId64, RZ_BUFFER_SIZE, and TDF_DETAILS.

Referenced by emit_redzone_byte(), and flush_if_full().

Field Documentation

m_original_offset

HOST_WIDE_INT asan_redzone_buffer::m_original_offset

private

Referenced by flush_redzone_payload().

m_prev_offset

HOST_WIDE_INT asan_redzone_buffer::m_prev_offset

private

Referenced by emit_redzone_byte(), and flush_redzone_payload().

m_shadow_bytes

auto_vec<unsigned char> asan_redzone_buffer::m_shadow_bytes

Referenced by asan_emit_stack_protection(), emit_redzone_byte(), flush_if_full(), and flush_redzone_payload().

m_shadow_mem

rtx asan_redzone_buffer::m_shadow_mem

private

Referenced by emit_redzone_byte(), and flush_redzone_payload().

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The documentation for this class was generated from the following file:

• asan.cc