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Diffstat (limited to 'gdb/config/sparc/tm-sparclet.h')
| -rw-r--r-- | gdb/config/sparc/tm-sparclet.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/gdb/config/sparc/tm-sparclet.h b/gdb/config/sparc/tm-sparclet.h new file mode 100644 index 00000000000..bc430830b8b --- /dev/null +++ b/gdb/config/sparc/tm-sparclet.h @@ -0,0 +1,132 @@ +/* Target machine definitions for GDB for an embedded SPARC. + Copyright 1996 Free Software Foundation, Inc. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "sparc/tm-sparc.h" + +#define TARGET_SPARCLET 1 + +/* Select the sparclet disassembler. Slightly different instruction set from + the V8 sparc. */ + +#undef TM_PRINT_INSN_MACH +#define TM_PRINT_INSN_MACH bfd_mach_sparc_sparclet + +/* overrides of tm-sparc.h */ + +#undef TARGET_BYTE_ORDER +#define TARGET_BYTE_ORDER_SELECTABLE + +/* Sequence of bytes for breakpoint instruction (ta 1). */ +#undef BREAKPOINT +#define BIG_BREAKPOINT {0x91, 0xd0, 0x20, 0x01} +#define LITTLE_BREAKPOINT {0x01, 0x20, 0xd0, 0x91} + +#undef NUM_REGS /* formerly "72" */ +/* WIN FP CPU CCP ASR AWR APSR */ +#define NUM_REGS (32 + 32 + 8 + 8 + 8/*+ 32 + 1*/) + +#undef REGISTER_BYTES /* formerly "(32*4 + 32*4 + 8*4)" */ +#define REGISTER_BYTES (32*4 + 32*4 + 8*4 + 8*4 + 8*4/* + 32*4 + 1*4*/) + +/* Initializer for an array of names of registers. + There should be NUM_REGS strings in this initializer. */ +/* Sparclet has no fp! */ +/* Compiler maps types for floats by number, so can't + change the numbers here. */ + +#undef REGISTER_NAMES +#define REGISTER_NAMES \ +{ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \ + "o0", "o1", "o2", "o3", "o4", "o5", "o6", "o7", \ + "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \ + "i0", "i1", "i2", "i3", "i4", "i5", "i6", "i7", \ + \ + "", "", "", "", "", "", "", "", /* no FPU regs */ \ + "", "", "", "", "", "", "", "", \ + "", "", "", "", "", "", "", "", \ + "", "", "", "", "", "", "", "", \ + /* no CPSR, FPSR */ \ + "y", "psr", "wim", "tbr", "pc", "npc", "", "", \ + \ + "ccsr", "ccpr", "cccrcr", "ccor", "ccobr", "ccibr", "ccir", "", \ + \ + /* ASR15 ASR19 (don't display them) */ \ + "asr1", "", "asr17", "asr18", "", "asr20", "asr21", "asr22", \ +/* \ + "awr0", "awr1", "awr2", "awr3", "awr4", "awr5", "awr6", "awr7", \ + "awr8", "awr9", "awr10", "awr11", "awr12", "awr13", "awr14", "awr15", \ + "awr16", "awr17", "awr18", "awr19", "awr20", "awr21", "awr22", "awr23", \ + "awr24", "awr25", "awr26", "awr27", "awr28", "awr29", "awr30", "awr31", \ + "apsr", \ + */ \ +} + +/* Remove FP dependant code which was defined in tm-sparc.h */ +#undef FP0_REGNUM /* Floating point register 0 */ +#undef FPS_REGNUM /* Floating point status register */ +#undef CPS_REGNUM /* Coprocessor status register */ + +/* sparclet register numbers */ +#define CCSR_REGNUM 72 + +#undef EXTRACT_RETURN_VALUE +#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ + { \ + memcpy ((VALBUF), \ + (char *)(REGBUF) + REGISTER_RAW_SIZE (O0_REGNUM) * 8 + \ + (TYPE_LENGTH(TYPE) >= REGISTER_RAW_SIZE (O0_REGNUM) \ + ? 0 : REGISTER_RAW_SIZE (O0_REGNUM) - TYPE_LENGTH(TYPE)), \ + TYPE_LENGTH(TYPE)); \ + } +#undef STORE_RETURN_VALUE +#define STORE_RETURN_VALUE(TYPE,VALBUF) \ + { \ + /* Other values are returned in register %o0. */ \ + write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF), \ + TYPE_LENGTH (TYPE)); \ + } + +#undef PRINT_REGISTER_HOOK +#define PRINT_REGISTER_HOOK(regno) + +/* Offsets into jmp_buf. Not defined by Sun, but at least documented in a + comment in <machine/setjmp.h>! */ + +#define JB_ELEMENT_SIZE 4 /* Size of each element in jmp_buf */ + +#define JB_ONSSTACK 0 +#define JB_SIGMASK 1 +#define JB_SP 2 +#define JB_PC 3 +#define JB_NPC 4 +#define JB_PSR 5 +#define JB_G1 6 +#define JB_O0 7 +#define JB_WBCNT 8 + +/* Figure out where the longjmp will land. We expect that we have just entered + longjmp and haven't yet setup the stack frame, so the args are still in the + output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we + extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. + This routine returns true on success */ + +extern int +get_longjmp_target PARAMS ((CORE_ADDR *)); + +#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR) |