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...

enum	pn_ASM { pn_ASM_M, pn_ASM_first_out, pn_ASM_max = pn_ASM_first_out }
	Projection numbers for result of ASM node (use for Proj nodes) More...

Functions
ir_node *	new_rd_ASM (dbg_info db, ir_node block, ir_node mem, int arity, ir_node in[], size_t n_constraints, ir_asm_constraint constraints, size_t n_clobber, ident clobber[], ident *asm_text)
	Constructor for an ASM pseudo node. More...

ir_node *	new_r_ASM (ir_node block, ir_node mem, int arity, ir_node in[], size_t n_constraints, ir_asm_constraint constraints, size_t n_clobber, ident clobber[], ident asm_text)
	Constructor for an ASM pseudo node. More...

ir_node *	new_d_ASM (dbg_info db, ir_node mem, int arity, ir_node in[], size_t n_constraints, ir_asm_constraint constraints, size_t n_clobber, ident clobber[], ident asm_text)
	Constructor for an ASM pseudo node. More...

ir_node *	new_ASM (ir_node mem, int arity, ir_node in[], size_t n_constraints, ir_asm_constraint constraints, size_t n_clobber, ident clobber[], ident *asm_text)
	Constructor for an ASM pseudo node. More...

size_t	get_ASM_n_constraints (const ir_node *node)
	Returns the number of output constraints for an ASM node. More...

size_t	get_ASM_n_clobbers (const ir_node *node)
	Returns the number of clobbered registers for an ASM node. More...

int	is_ASM (const ir_node *node)
	Test if node is a ASM. More...

ir_node *	get_ASM_mem (const ir_node *node)
	Returns mem input of an ASM node. More...

void	set_ASM_mem (ir_node node, ir_node mem)
	Sets mem input of an ASM node. More...

int	get_ASM_n_inputs (ir_node const *node)
	Get the number of ASM inputs. More...

ir_node *	get_ASM_input (ir_node const *node, int pos)
	Get the ASM input with index `pos`. More...

void	set_ASM_input (ir_node node, int pos, ir_node input)
	Set the ASM input with index `pos`. More...

ir_node **	get_ASM_input_arr (ir_node *node)
	Get an array of all ASM inputs. More...

ir_asm_constraint *	get_ASM_constraints (const ir_node *node)
	Returns constraints attribute of an ASM node. More...

void	set_ASM_constraints (ir_node node, ir_asm_constraint constraints)
	Sets constraints attribute of an ASM node. More...

ident **	get_ASM_clobbers (const ir_node *node)
	Returns clobbers attribute of an ASM node. More...

void	set_ASM_clobbers (ir_node node, ident *clobbers)
	Sets clobbers attribute of an ASM node. More...

ident *	get_ASM_text (const ir_node *node)
	Returns text attribute of an ASM node. More...

void	set_ASM_text (ir_node node, ident text)
	Sets text attribute of an ASM node. More...

ir_op *	get_op_ASM (void)
	Returns opcode for ASM nodes. More...

Variables
ir_op *	op_ASM
	ASM opcode. More...

Detailed Description

executes assembler fragments of the target machine.

The node contains a template for an assembler snippet. The compiler will replace occurrences 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 implicitly set cc, memory clobbers on all ASM statements).

Example (an i386 instruction)::

ASM(text="btsl %1, %0",
    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)

Data Structure Documentation

struct ir_asm_constraint

A input/output constraint attribute.

Definition at line 270 of file firm_types.h.

Data Fields
ident *	constraint	The constraint for this input/output.
int	in_pos	The input position for this constraint.
ir_mode *	mode	The mode of the constraint.
int	out_pos	The output position for this constraint.

Enumeration Type Documentation

enum n_ASM

Input numbers for ASM node.

Enumerator
n_ASM_mem	memory dependency
n_ASM_max

Definition at line 113 of file nodes.h.

enum pn_ASM

Projection numbers for result of ASM node (use for Proj nodes)

Enumerator
pn_ASM_M	memory result
pn_ASM_first_out	first output
pn_ASM_max

Definition at line 121 of file nodes.h.

Function Documentation

ident** get_ASM_clobbers ( const ir_node * node )

Returns clobbers attribute of an ASM node.

ir_asm_constraint* get_ASM_constraints ( const ir_node * node )

Returns constraints attribute of an ASM node.

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

Get the ASM input with index pos.

ir_node** get_ASM_input_arr ( ir_node * node )

Get an array of all ASM inputs.

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.

size_t get_ASM_n_constraints ( const ir_node * node )

Returns the number of output constraints for an ASM node.

int get_ASM_n_inputs ( ir_node const * node )

Get the number of ASM inputs.

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[],
		size_t	n_constraints,
		ir_asm_constraint *	constraints,
		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.
n_constraints	The number of constraints to the node.
constraints	The array of length n_constraints of 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[],
		size_t	n_constraints,
		ir_asm_constraint *	constraints,
		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.
n_constraints	The number of constraints to the node.
constraints	The array of length n_constraints of 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[],
		size_t	n_constraints,
		ir_asm_constraint *	constraints,
		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.
n_constraints	The number of constraints to the node.
constraints	The array of length n_constraints of 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[],
		size_t	n_constraints,
		ir_asm_constraint *	constraints,
		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.
n_constraints	The number of constraints to the node.
constraints	The array of length n_constraints of 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_constraints	(	ir_node *	node,
		ir_asm_constraint *	constraints
	)

Sets constraints attribute of an ASM node.

void set_ASM_input	(	ir_node *	node,
		int	pos,
		ir_node *	input
	)

Set the ASM input with index pos.

void set_ASM_mem	(	ir_node *	node,
		ir_node *	mem
	)

Sets mem input 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 162 of file nodes.h.

Data Structures

Enumerations

Functions

Variables

Detailed Description

Data Structure Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation