DISABLE Compiler Directive

Abbreviation	None.
Arguments	None.
Default	None.
µVision	This directive may not be specified on the command line.
Description	The DISABLE directive instructs the compiler to generate code that disables all interrupts for the duration of a function. This directive must be specified with #pragma immediately before the function declaration. The DISABLE directive applies to one function only and must be re-specified for each new function. Note The DISABLE directive must be specified using #pragma only and may not be specified on the command line. The DISABLE directive may be specified more than once in a source file but must be specified for each function that is to execute with interrupts disabled. A function with disabled interrupts may not have a return type of bit. The DISABLE directive has no impact on the main function, since typically all interrupts are disabled and no function return occurs.
Example	stmt level source 1 typedef unsigned char uchar; 2 3 *#pragma disable / Disable Interrupts /* 4 uchar dfunc (uchar p1, uchar p2) { 5 1 return (p1 * p2 + p2 * p1); 6 1 } ; FUNCTION _dfunc (BEGIN) 0000 D3 SETB C 0001 10AF01 JBC EA,?C0002 0004 C3 CLR C 0005 ?C0002: 0005 C0D0 PUSH PSW ;---- Variable 'p1' assigned to register 'R7' ---- ;---- Variable 'p2' assigned to register 'R5' ---- ; SOURCE LINE # 4 ; SOURCE LINE # 5 0007 ED MOV A,R5 0008 8FF0 MOV B,R7 000A A4 MUL AB 000B 25E0 ADD A,ACC 000D FF MOV R7,A ; SOURCE LINE # 6 000E ?C0001: 000E D0D0 POP PSW 0010 92AF MOV EA,C 0012 22 RET ; FUNCTION _dfunc (END)