executes assembler fragments of the target machine. More...

Data Structures
struct	ir_asm_constraint
	A input/output constraint attribute. More...

Enumerations
enum	n_ASM { n_ASM_mem, n_ASM_max = n_ASM_mem }
	Input numbers for ASM node. More...

Functions
ir_node *	new_rd_ASM (dbg_info db, ir_node block, ir_node mem, int arity, ir_node in[], ir_asm_constraint inputs, size_t n_outs, ir_asm_constraint outputs, size_t n_clobber, ident clobber[], ident asm_text)
	Constructor for an ASM pseudo node.
ir_node *	new_r_ASM (ir_node block, ir_node mem, int arity, ir_node in[], ir_asm_constraint inputs, size_t n_outs, ir_asm_constraint outputs, size_t n_clobber, ident clobber[], ident *asm_text)
	Constructor for an ASM pseudo node.
ir_node *	new_d_ASM (dbg_info db, ir_node mem, int arity, ir_node in[], ir_asm_constraint inputs, size_t n_outs, ir_asm_constraint outputs, size_t n_clobber, ident clobber[], ident *asm_text)
	Constructor for an ASM pseudo node.
ir_node *	new_ASM (ir_node mem, int arity, ir_node in[], ir_asm_constraint inputs, size_t n_outs, ir_asm_constraint outputs, size_t n_clobber, ident clobber[], ident asm_text)
	Constructor for an ASM pseudo node.
int	get_ASM_n_inputs (const ir_node *node)
	Returns the number of input constraints for an ASM node.
ir_node *	get_ASM_input (const ir_node *node, int pos)
	Returns input number `pos` of an ASM node.
size_t	get_ASM_n_output_constraints (const ir_node *node)
	Returns the number of output constraints for an ASM node.
size_t	get_ASM_n_clobbers (const ir_node *node)
	Returns the number of clobbered registers for an ASM node.
int	is_ASM (const ir_node *node)
	Test if node is a ASM.
ir_node *	get_ASM_mem (const ir_node *node)
	Returns mem input of an ASM node.
void	set_ASM_mem (ir_node node, ir_node mem)
	Sets mem input of an ASM node.
ir_asm_constraint *	get_ASM_input_constraints (const ir_node *node)
	Returns input_constraints attribute of an ASM node.
void	set_ASM_input_constraints (ir_node node, ir_asm_constraint input_constraints)
	Sets input_constraints attribute of an ASM node.
ir_asm_constraint *	get_ASM_output_constraints (const ir_node *node)
	Returns output_constraints attribute of an ASM node.
void	set_ASM_output_constraints (ir_node node, ir_asm_constraint output_constraints)
	Sets output_constraints attribute of an ASM node.
ident **	get_ASM_clobbers (const ir_node *node)
	Returns clobbers attribute of an ASM node.
void	set_ASM_clobbers (ir_node node, ident *clobbers)
	Sets clobbers attribute of an ASM node.
ident *	get_ASM_text (const ir_node *node)
	Returns text attribute of an ASM node.
void	set_ASM_text (ir_node node, ident text)
	Sets text attribute of an ASM node.
ir_op *	get_op_ASM (void)
	Returns opcode for ASM nodes.

Variables
ir_op *	op_ASM
	ASM opcode.

Detailed Description

executes assembler fragments of the target machine.

The node contains a template for an assembler snippet. The compiler will replace occurences of %0 to %9 with input/output registers, %% with a single % char. Some backends allow additional specifiers (for example w3, l3, h3 on x86 to get a 16bit, 8hit low, 8bit high part of a register). After the replacements the text is emitted into the final assembly.

The clobber list contains names of registers which have an undefined value after the assembler instruction is executed; it may also contain 'memory' or 'cc' if global state/memory changes or the condition code registers (some backends implicitely set cc, memory clobbers on all ASM statements).

Example (an i386 instruction)::

    ASM(text="btsl %1, %0",
            input_constraints = ["=m", "r"],
            clobbers = ["cc"])

As there are no output, the %0 references the first input which is just an address which the asm operation writes to. %1 references to an input which is passed as a register. The condition code register has an unknown value after the instruction.

(This format is inspired by the gcc extended asm syntax)

Enumeration Type Documentation

enum n_ASM

Input numbers for ASM node.

Definition at line 49 of file nodeops.h.

Function Documentation

ident** get_ASM_clobbers ( const ir_node * node )

Returns clobbers attribute of an ASM node.

ir_node* get_ASM_input	(	const ir_node *	node,
		int	pos
	)

Returns input number pos of an ASM node.

ir_asm_constraint* get_ASM_input_constraints ( const ir_node * node )

Returns input_constraints attribute of an ASM node.

ir_node* get_ASM_mem ( const ir_node * node )

Returns mem input of an ASM node.

size_t get_ASM_n_clobbers ( const ir_node * node )

Returns the number of clobbered registers for an ASM node.

int get_ASM_n_inputs ( const ir_node * node )

Returns the number of input constraints for an ASM node.

size_t get_ASM_n_output_constraints ( const ir_node * node )

Returns the number of output constraints for an ASM node.

ir_asm_constraint* get_ASM_output_constraints ( const ir_node * node )

Returns output_constraints attribute of an ASM node.

ident* get_ASM_text ( const ir_node * node )

Returns text attribute of an ASM node.

ir_op* get_op_ASM ( void )

Returns opcode for ASM nodes.

int is_ASM ( const ir_node * node )

Test if node is a ASM.

Returns: 1 if the node is a ASM node, 0 otherwise

ir_node* new_ASM	(	ir_node *	mem,
		int	arity,
		ir_node *	in[],
		ir_asm_constraint *	inputs,
		size_t	n_outs,
		ir_asm_constraint *	outputs,
		size_t	n_clobber,
		ident *	clobber[],
		ident *	asm_text
	)

Constructor for an ASM pseudo node.

Parameters

*mem	memory dependency
arity	The number of data inputs to the node.
*in	The array of length arity of data inputs.
*inputs	The array of length arity of input constraints.
n_outs	The number of data outputs to the node.
*outputs	The array of length n_outs of output constraints.
n_clobber	The number of clobbered registers.
*clobber	The array of length n_clobber of clobbered registers.
*asm_text	The assembler text.

ir_node* new_d_ASM	(	dbg_info *	db,
		ir_node *	mem,
		int	arity,
		ir_node *	in[],
		ir_asm_constraint *	inputs,
		size_t	n_outs,
		ir_asm_constraint *	outputs,
		size_t	n_clobber,
		ident *	clobber[],
		ident *	asm_text
	)

Constructor for an ASM pseudo node.

Parameters

*db	A pointer for debug information.
*mem	memory dependency
arity	The number of data inputs to the node.
*in	The array of length arity of data inputs.
*inputs	The array of length arity of input constraints.
n_outs	The number of data outputs to the node.
*outputs	The array of length n_outs of output constraints.
n_clobber	The number of clobbered registers.
*clobber	The array of length n_clobber of clobbered registers.
*asm_text	The assembler text.

ir_node* new_r_ASM	(	ir_node *	block,
		ir_node *	mem,
		int	arity,
		ir_node *	in[],
		ir_asm_constraint *	inputs,
		size_t	n_outs,
		ir_asm_constraint *	outputs,
		size_t	n_clobber,
		ident *	clobber[],
		ident *	asm_text
	)

Constructor for an ASM pseudo node.

Parameters

*block	The block the node belong to.
*mem	memory dependency
arity	The number of data inputs to the node.
*in	The array of length arity of data inputs.
*inputs	The array of length arity of input constraints.
n_outs	The number of data outputs to the node.
*outputs	The array of length n_outs of output constraints.
n_clobber	The number of clobbered registers.
*clobber	The array of length n_clobber of clobbered registers.
*asm_text	The assembler text.

ir_node* new_rd_ASM	(	dbg_info *	db,
		ir_node *	block,
		ir_node *	mem,
		int	arity,
		ir_node *	in[],
		ir_asm_constraint *	inputs,
		size_t	n_outs,
		ir_asm_constraint *	outputs,
		size_t	n_clobber,
		ident *	clobber[],
		ident *	asm_text
	)

Constructor for an ASM pseudo node.

Parameters

*db	A pointer for debug information.
*block	The block the node belong to.
*mem	memory dependency
arity	The number of data inputs to the node.
*in	The array of length arity of data inputs.
*inputs	The array of length arity of input constraints.
n_outs	The number of data outputs to the node.
*outputs	The array of length n_outs of output constraints.
n_clobber	The number of clobbered registers.
*clobber	The array of length n_clobber of clobbered registers.
*asm_text	The assembler text.

void set_ASM_clobbers	(	ir_node *	node,
		ident **	clobbers
	)

Sets clobbers attribute of an ASM node.

void set_ASM_input_constraints	(	ir_node *	node,
		ir_asm_constraint *	input_constraints
	)

Sets input_constraints attribute of an ASM node.

void set_ASM_mem	(	ir_node *	node,
		ir_node *	mem
	)

Sets mem input of an ASM node.

void set_ASM_output_constraints	(	ir_node *	node,
		ir_asm_constraint *	output_constraints
	)

Sets output_constraints attribute of an ASM node.

void set_ASM_text	(	ir_node *	node,
		ident *	text
	)

Sets text attribute of an ASM node.

Variable Documentation

ir_op* op_ASM

ASM opcode.

Definition at line 93 of file opcodes.h.

Data Structures

Enumerations

Functions

Variables

Detailed Description

Enumeration Type Documentation

Function Documentation

Variable Documentation