SAVESYS Compiler Directive

Abbreviation		None.
Arguments		None.
Default		SAVESYS
µVision		Options — C166 — Save Temporary Variables on User Stack.
Description		The SAVESYS directive instructs the C166 Compiler to save temporary results on the system stack. This is the default operation of the C166 Compiler.
See Also		SAVEUSR
Example		1 extern void func (void); 2 3 #pragma SAVESYS // Save to SYS STACK (default) 4 int func1 (int i1, int i2) { 5 1 func (); 6 1 return (i1 + i2); 7 1 } 8 9 10 #pragma SAVEUSR // Save to USER STACK 11 int func2 (int i1, int i2) { 12 1 func (); 13 1 return (i1 + i2); 14 1 } ASSEMBLY LISTING OF GENERATED OBJECT CODE ; FUNCTION func1 (BEGIN RMASK = @0x7FFF) ; SOURCE LINE # 4 0000 ECFD PUSH R13 0002 ECFE PUSH R14 0004 F0D9 MOV R13,R9 ;---- Variable 'i2' assigned to Register 'R13' ---- 0006 F0E8 MOV R14,R8 ;---- Variable 'i1' assigned to Register 'R14' ---- ; SOURCE LINE # 5 0008 CA000000 E CALLA cc_UC,func ; SOURCE LINE # 6 000C F04E MOV R4,R14 000E 004D ADD R4,R13 ; SOURCE LINE # 7 0010 FCFE POP R14 0012 FCFD POP R13 0014 CB00 RET ; FUNCTION func1 (END RMASK = @0x7FFF) ; FUNCTION func2 (BEGIN RMASK = @0x7FFF) ; SOURCE LINE # 11 0016 88D0 MOV [-R0],R13 0018 88E0 MOV [-R0],R14 001A F0D9 MOV R13,R9 ;---- Variable 'i2' assigned to Register 'R13' ---- 001C F0E8 MOV R14,R8 ;---- Variable 'i1' assigned to Register 'R14' ---- ; SOURCE LINE # 12 001E CA000000 E CALLA cc_UC,func ; SOURCE LINE # 13 0022 F04E MOV R4,R14 0024 004D ADD R4,R13 ; SOURCE LINE # 14 0026 98E0 MOV R14,[R0+] 0028 98D0 MOV R13,[R0+] 002A CB00 RET ; FUNCTION func2 (END RMASK = @0x7FFF)