sparc.rar_The Fields_sparc

/* @(#)sparc.h 1.1 92/07/30 SMI */ /* * opcodes of the call instructions */ /* * offset (in bytes) of the code from the entry address of a routine. * (see asgnsamples for use and explanation.) */ #define OFFSET_OF_CODE 0 /* there is no mask on a SPARC */ #define UNITS_TO_CODE (OFFSET_OF_CODE / sizeof(UNIT)) /* * address at which text begins N_TXTADDR is defined in a.out.h */ #define TORIGIN ((unsigned long) N_TXTADDR(xbuf)) /* * Macros for manipulating instruction fields. These use the * structures defined below */ #define OP(x) (((union instruct *) (x))->f_1.op) #define DISP30(x) (((union instruct *) (x))->f_1.disp30) #define OP3(x) (((union instruct *) (x))->f_3c.op3) #define RD(x) (((union instruct *) (x))->f_3c.rd) #define IMMED(x) (((union instruct *) (x))->f_3c.i) #define SIMM13(x) (((((union instruct *) (x))->f_3d.simm13) << 19) >> 19) #define RS1(x) (((union instruct *) (x))->f_3c.rs1) #define RS2(x) (((union instruct *) (x))->f_3c.rs2) /* * a few values for operand and register fields */ #define CALL 0x1 #define FMT3_0x10 0x2 #define JMPL 0x38 #define R_G0 0x0 #define R_O7 0xF #define R_I7 0x1F /* * A macro for converting from instructp to the appropriate address in * the program */ #define PC_VAL(x) ((x) - (unsigned long) textspace + TORIGIN) /* * structures for decoding instructions */ struct f_1 { unsigned long op:2, disp30:30 }; struct f_2a { unsigned long op:2, rd:5, op2:3, imm22:22 }; struct f_2b { unsigned long op:2, a:1, cond:4, op2:3, disp22:22 }; struct f_3a { unsigned long op:2, ign1:1, cond:4, op3:6, rs1:5, i:1, ign2:8, rs2:5 }; struct f_3b { unsigned long op:2, ign1:1, cond:4, op3:6, rs1:5, i:1, simm13:13 }; struct f_3c { unsigned long op:2, rd:5, op3:6, rs1:5, i:1, asi:8, rs2:5 }; struct f_3d { unsigned long op:2, rd:5, op3:6, rs1:5, i:1, simm13:13 }; struct f_3e { unsigned long op:2, rd:5, op3:6, rs1:5, opf:9, rs2:5 }; union instruct { struct f_1 f_1; struct f_2a f_2a; struct f_2b f_2b; struct f_3a f_3a; struct f_3b f_3b; struct f_3c f_3c; struct f_3d f_3d; struct f_3e f_3e; };