diff options
Diffstat (limited to 'sys/arch/alpha')
| -rw-r--r-- | sys/arch/alpha/alpha/db_disasm.c | 130 |
1 files changed, 122 insertions, 8 deletions
diff --git a/sys/arch/alpha/alpha/db_disasm.c b/sys/arch/alpha/alpha/db_disasm.c index 531ecb397db..509ecf7560a 100644 --- a/sys/arch/alpha/alpha/db_disasm.c +++ b/sys/arch/alpha/alpha/db_disasm.c @@ -1,4 +1,4 @@ -/* $OpenBSD: db_disasm.c,v 1.1 1997/07/06 16:31:13 niklas Exp $ */ +/* $OpenBSD: db_disasm.c,v 1.2 1997/07/08 10:56:30 niklas Exp $ */ /* * Copyright (c) 1997 Niklas Hallqvist. All rights reserverd. @@ -13,11 +13,9 @@ * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. + * This product includes software developed by Niklas Hallqvist. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE @@ -38,12 +36,128 @@ #include <machine/db_machdep.h> #include <ddb/db_interface.h> +#include <ddb/db_output.h> + +static struct opcode { + enum opc_fmt { OPC_PAL, OPC_RES, OPC_MEM, OPC_OP, OPC_BR } opc_fmt; + char *opc_name; +} opcode[] = { + { OPC_PAL, "call_pal" }, /* 00 */ + { OPC_RES, "opc01" }, /* 01 */ + { OPC_RES, "opc02" }, /* 02 */ + { OPC_RES, "opc03" }, /* 03 */ + { OPC_RES, "opc04" }, /* 04 */ + { OPC_RES, "opc05" }, /* 05 */ + { OPC_RES, "opc06" }, /* 06 */ + { OPC_RES, "opc07" }, /* 07 */ + { OPC_MEM, "lda" }, /* 08 */ + { OPC_MEM, "ldah" }, /* 09 */ + { OPC_RES, "opc0a" }, /* 0A */ + { OPC_MEM, "ldq_u" }, /* 0B */ + { OPC_RES, "opc0c" }, /* 0C */ + { OPC_RES, "opc0d" }, /* 0D */ + { OPC_RES, "opc0e" }, /* 0E */ + { OPC_MEM, "stq_u" }, /* 0F */ + { OPC_OP, "inta" }, /* 10 */ + { OPC_OP, "intl" }, /* 11 */ + { OPC_OP, "ints" }, /* 12 */ + { OPC_OP, "intm" }, /* 13 */ + { OPC_RES, "opc14" }, /* 14 */ + { OPC_OP, "fltv" }, /* 15 */ + { OPC_OP, "flti" }, /* 16 */ + { OPC_OP, "fltl" }, /* 17 */ + { OPC_MEM, "misc" }, /* 18 */ + { OPC_PAL, "pal19" }, /* 19 */ + { OPC_MEM, "jsr" }, /* 1A */ + { OPC_PAL, "pal1b" }, /* 1B */ + { OPC_RES, "opc1c" }, /* 1C */ + { OPC_PAL, "pal1d" }, /* 1D */ + { OPC_PAL, "pal1e" }, /* 1E */ + { OPC_PAL, "pal1f" }, /* 1F */ + { OPC_MEM, "ldf" }, /* 20 */ + { OPC_MEM, "ldg" }, /* 21 */ + { OPC_MEM, "lds" }, /* 22 */ + { OPC_MEM, "ldt" }, /* 23 */ + { OPC_MEM, "stf" }, /* 24 */ + { OPC_MEM, "stg" }, /* 25 */ + { OPC_MEM, "sts" }, /* 26 */ + { OPC_MEM, "stt" }, /* 27 */ + { OPC_MEM, "ldl" }, /* 28 */ + { OPC_MEM, "ldq" }, /* 29 */ + { OPC_MEM, "ldl_l" }, /* 2A */ + { OPC_MEM, "ldq_l" }, /* 2B */ + { OPC_MEM, "stl" }, /* 2C */ + { OPC_MEM, "stq" }, /* 2D */ + { OPC_MEM, "stl_c" }, /* 2E */ + { OPC_MEM, "stq_c" }, /* 2F */ + { OPC_BR, "br" }, /* 30 */ + { OPC_BR, "fbeq" }, /* 31 */ + { OPC_BR, "fblt" }, /* 32 */ + { OPC_BR, "fble" }, /* 33 */ + { OPC_BR, "bsr" }, /* 34 */ + { OPC_BR, "fbne" }, /* 35 */ + { OPC_BR, "fbge" }, /* 36 */ + { OPC_BR, "fbgt" }, /* 37 */ + { OPC_BR, "blbc" }, /* 38 */ + { OPC_BR, "beq" }, /* 39 */ + { OPC_BR, "blt" }, /* 3A */ + { OPC_BR, "ble" }, /* 3B */ + { OPC_BR, "blbs" }, /* 3C */ + { OPC_BR, "bne" }, /* 3D */ + { OPC_BR, "bge" }, /* 3E */ + { OPC_BR, "bgt" }, /* 3F */ +}; vm_offset_t db_disasm(loc, flag) vm_offset_t loc; boolean_t flag; { - printf("disassembler not implemented yet\n"); - return (0); + u_int32_t ins = *(u_int32_t *)loc; + int opc = ins >> 26; + int arg = ins & 0x3ffffff; + int ra, rb, rc, disp, func; + + db_printf("%s\t", opcode[opc].opc_name); + switch (opcode[opc].opc_fmt) { + case OPC_PAL: + switch (arg) { + case 0x0000000: + db_printf("halt"); + break; + case 0x0000080: + db_printf("bpt"); + break; + case 0x0000086: + db_printf("imb"); + break; + default: + db_printf("\t0x%7x", arg); + break; + } + break; + case OPC_RES: + db_printf("\t0x%8x", opc); + break; + case OPC_MEM: + ra = arg >> 21; + rb = (arg >> 16) & 0x1f; + disp = arg & 0xffff; + db_printf("\t$%d,$%d(%4x)", ra, rb, disp); + break; + case OPC_OP: + ra = arg >> 21; + rb = (arg >> 16) & 0x1f; + func = (arg >> 5) & 0x7ff; + rc = arg & 0x1f; + db_printf("\t%3x,$%d,$%d,$%d", func, ra, rb, rc); + break; + case OPC_BR: + ra = arg >> 21; + disp = arg & 0x1fffff; + db_printf("\t$%s,%6x", ra, disp); + break; + } + db_printf("\n"); + return (0); } |