/********************************************************************* syscalls.h This include file is used by only the OS502. Revision History: 1.0 August 1990: Initial release 1.1 Jan 1991: Make system calls portable by using union of pointer and long. Add incls for scheduler_printer. 1.2 Dec 1991; Allow interrupts to occur in user code and in CALL statements. 1.5 Aug 1993; Add READ_MODIFY & DEFINE_SHARED_AREA support. *********************************************************************/ #include "stdio.h" /* Definition of System Call numbers */ #define SYSNUM_MEM_READ 0 #define SYSNUM_MEM_WRITE 1 #define SYSNUM_READ_MODIFY 2 #define SYSNUM_GET_TIME_OF_DAY 3 #define SYSNUM_SLEEP 4 #define SYSNUM_CREATE_PROCESS 5 #define SYSNUM_GET_PROCESS_ID 6 #define SYSNUM_TERMINATE_PROCESS 7 #define SYSNUM_SUSPEND_PROCESS 8 #define SYSNUM_RESUME_PROCESS 9 #define SYSNUM_CHANGE_PRIORITY 10 #define SYSNUM_SEND_MESSAGE 11 #define SYSNUM_RECEIVE_MESSAGE 12 #define SYSNUM_DISK_READ 13 #define SYSNUM_DISK_WRITE 14 #define SYSNUM_DEFINE_SHARED_AREA 15 extern void charge_time_and_check_events( INT32 ); #ifndef COST_OF_CALL #define COST_OF_CALL 2L #endif #define CALL( fff ) \ { \ charge_time_and_check_events( COST_OF_CALL ); \ fff; \ if( POP_THE_STACK == TRUE ) \ return; \ } \ /* ZCALL is used only within the hardware - NOT for OS usage. */ #define ZCALL( fff ) \ { \ fff; \ if( POP_THE_STACK == TRUE ) \ return; \ } \ /* Macros used to make the test programs more readable */ #ifndef COST_OF_CPU_INSTRUCTION #define COST_OF_CPU_INSTRUCTION 1L #endif /* Some compilers require a short in a switch statement! */ #define SELECT_STEP switch( (INT16)Z502_REG_PROGRAM_COUNTER ) #define STEP( sss ) \ \ case sss: \ Z502_REG_PROGRAM_COUNTER++; \ charge_time_and_check_events( COST_OF_CPU_INSTRUCTION ); #define GO_NEXT_TO( ggg ) Z502_REG_PROGRAM_COUNTER = ggg; /* Macro expansions for each of the system calls */ #define MEM_READ( arg1, arg2 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_MEM_READ; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ return; \ } \ #define MEM_WRITE( arg1, arg2 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_MEM_WRITE; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ return; \ } \ #define READ_MODIFY( arg1, arg2 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_READ_MODIFY; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ return; \ } \ #define GET_TIME_OF_DAY( arg1 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_GET_TIME_OF_DAY; \ Z502_REG_ARG1.PTR = (void *)arg1; \ return; \ } \ #define SLEEP( arg1 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_SLEEP; \ Z502_REG_ARG1.VAL = arg1; \ return; \ } \ #define CREATE_PROCESS( arg1, arg2, arg3, arg4, arg5 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_CREATE_PROCESS; \ Z502_REG_ARG1.PTR = (void *)arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ Z502_REG_ARG3.VAL = arg3; \ Z502_REG_ARG4.PTR = (void *)arg4; \ Z502_REG_ARG5.PTR = (void *)arg5; \ return; \ } \ #define GET_PROCESS_ID( arg1, arg2, arg3 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_GET_PROCESS_ID; \ Z502_REG_ARG1.PTR = (void *)arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ Z502_REG_ARG3.PTR = (void *)arg3; \ return; \ } \ #define TERMINATE_PROCESS( arg1, arg2 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_TERMINATE_PROCESS; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ return; \ } \ #define SUSPEND_PROCESS( arg1, arg2 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_SUSPEND_PROCESS; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ return; \ } \ #define RESUME_PROCESS( arg1, arg2 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_RESUME_PROCESS; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ return; \ } \ #define CHANGE_PRIORITY( arg1, arg2, arg3 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_CHANGE_PRIORITY; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.VAL = arg2; \ Z502_REG_ARG3.PTR = (void *)arg3; \ return; \ } \ #define SEND_MESSAGE( arg1, arg2, arg3, arg4 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_SEND_MESSAGE; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ Z502_REG_ARG3.VAL = arg3; \ Z502_REG_ARG4.PTR = (void *)arg4; \ return; \ } \ #define RECEIVE_MESSAGE( arg1, arg2, arg3, arg4, arg5, arg6 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_RECEIVE_MESSAGE; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.PTR = (void *)arg2; \ Z502_REG_ARG3.VAL = arg3; \ Z502_REG_ARG4.PTR = (void *)arg4; \ Z502_REG_ARG5.PTR = (void *)arg5; \ Z502_REG_ARG6.PTR = (void *)arg6; \ return; \ } \ #define DISK_READ( arg1, arg2, arg3, arg4 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_DISK_READ; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.VAL = arg2; \ Z502_REG_ARG3.VAL = arg3; \ Z502_REG_ARG4.PTR = (void *)arg4; \ return; \ } \ #define DISK_WRITE( arg1, arg2, arg3, arg4 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_DISK_WRITE; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.VAL = arg2; \ Z502_REG_ARG3.VAL = arg3; \ Z502_REG_ARG4.PTR = (void *)arg4; \ return; \ } \ #define DEFINE_SHARED_AREA( arg1, arg2, arg3, arg4, arg5 ) \ { \ SYS_CALL_CALL_TYPE = SYSNUM_DEFINE_SHARED_AREA; \ Z502_REG_ARG1.VAL = arg1; \ Z502_REG_ARG2.VAL = arg2; \ Z502_REG_ARG3.PTR = (void *)arg3; \ Z502_REG_ARG4.PTR = (void *)arg4; \ Z502_REG_ARG5.PTR = (void *)arg5; \ return; \ } \ /* This section includes items needed in the scheduler printer. It's also useful for those routines that want to communicate with the scheduler printer. */ #define SP_FILE_MODE (INT16)0 #define SP_TIME_MODE (INT16)1 #define SP_ACTION_MODE (INT16)2 #define SP_TARGET_MODE (INT16)3 #define SP_STATE_MODE_START (INT16)4 #define SP_NEW_MODE (INT16)4 #define SP_RUNNING_MODE (INT16)5 #define SP_READY_MODE (INT16)6 #define SP_WAITING_MODE (INT16)7 #define SP_SUSPENDED_MODE (INT16)8 #define SP_SWAPPED_MODE (INT16)9 #define SP_TERMINATED_MODE (INT16)10 #define SP_NUMBER_OF_STATES SP_TERMINATED_MODE-SP_NEW_MODE+1 #define SP_MAX_NUMBER_OF_PIDS (INT16)10 #define SP_LENGTH_OF_ACTION (INT16)8 /* This string is printed out when requested as the header */ #define SP_HEADER_STRING \ " Time Target Action Run New Done State Populations \n"