stack_alloc.h File Reference

Temporary memory allocation on stack. More...

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Macros
#define	ALIGN(stack, size)   ((stack) += ((size) - (long)(stack)) & ((size) - 1))
#define	ALLOC(var, size, type)   var = PUSH(stack, size, type)
#define	PUSH(stack, size, type)   (ALIGN((stack),sizeof(type)),(stack)+=((size)*sizeof(type)),(type*)((stack)-((size)*sizeof(type))))
#define	VARDECL(var)   var

Detailed Description

Temporary memory allocation on stack.

Definition in file stack_alloc.h.

Macro Definition Documentation

ALIGN

#define ALIGN	(		stack,
			size
	)		((stack) += ((size) - (long)(stack)) & ((size) - 1))

Aligns the stack to a 'size' boundary

Parameters

stack	Stack
size	New size boundary

Definition at line 97 of file stack_alloc.h.

ALLOC

#define ALLOC	(		var,
			size,
			type
	)		var = PUSH(stack, size, type)

Allocate 'size' elements of 'type' on stack

Parameters

var	Name of variable to allocate
size	Number of elements
type	Type of element

Definition at line 111 of file stack_alloc.h.

PUSH

#define PUSH	(		stack,
			size,
			type
	)		(ALIGN((stack),sizeof(type)),(stack)+=((size)*sizeof(type)),(type*)((stack)-((size)*sizeof(type))))

Allocates 'size' elements of type 'type' on the stack

Parameters

stack	Stack
size	Number of elements
type	Type of element

Definition at line 99 of file stack_alloc.h.

VARDECL

#define VARDECL

(

var

)

var

Declare variable on stack

Parameters

var	Variable to declare

Definition at line 110 of file stack_alloc.h.