1*45699Sbostic /* align.c 1.2 90/12/04 */ 229646Ssam 3*45699Sbostic #include "align.h" 429646Ssam 529646Ssam /* 629646Ssam * Part of the parameter list is set up by locore.s. 729646Ssam * First 2 dummy variables MUST BE the first local 829646Ssam * variables; leaving place for registers 0 and 1 929646Ssam * which are not preserved by the current C compiler. 1029646Ssam * Then, the array of structures and the last_operand 1129646Ssam * HAVE to be in the given order, to correspond to the 1229646Ssam * description of process_info in 'alignment.h'. 1329646Ssam */ 1429646Ssam alignment() 1529646Ssam { 1629646Ssam long space_4_Register_1; /* register 1 */ 1729646Ssam long space_4_Register_0; /* register 0 */ 1829646Ssam struct oprnd space_4_decoded[4]; 1929646Ssam long space_4_opcode; 2029646Ssam long space_4_last_operand; /* Last operand # processed */ 2129646Ssam long space_4_saved_pc; 2229646Ssam long space_4_saved_sp; 2329646Ssam 2429646Ssam register process_info *infop; 2529646Ssam 2629646Ssam infop = (process_info *)&space_4_saved_sp; 2729646Ssam saved_pc = pc; 2829646Ssam saved_sp = sp; /* For possible exceptions */ 2929646Ssam 3029646Ssam last_operand = -1; /* To get the operand routine going correctly */ 3129646Ssam 3229646Ssam opCODE = 0xff & *(char *)pc; 3329646Ssam pc++; 3429646Ssam (*Table[opCODE].routine) (infop); /* Call relevant handler */ 3529646Ssam /* 3629646Ssam * NOTE: nothing should follow, except the return. 3729646Ssam * The register variables cannot be trusted anymore, 3829646Ssam * if an exception is signalled. See 'exception.c' 3929646Ssam * to understand why. 4029646Ssam */ 4129646Ssam } 42