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https://github.com/darlinghq/darling-gdb.git
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84 lines
3.1 KiB
C
84 lines
3.1 KiB
C
/* I860 -specific breakpoint stuff.
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Copyright (C) 1986, 1987 Free Software Foundation, Inc.
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GDB is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY. No author or distributor accepts responsibility to anyone
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for the consequences of using it or for whether it serves any
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particular purpose or works at all, unless he says so in writing.
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Refer to the GDB General Public License for full details.
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Everyone is granted permission to copy, modify and redistribute GDB,
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but only under the conditions described in the GDB General Public
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License. A copy of this license is supposed to have been given to you
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along with GDB so you can know your rights and responsibilities. It
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should be in a file named COPYING. Among other things, the copyright
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notice and this notice must be preserved on all copies.
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In other words, go ahead and share GDB, but don't try to stop
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anyone else from sharing it farther. Help stamp out software hoarding!
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*/
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/* #define BREAKPOINT_DEBUG 1 */
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#include "tm.h"
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#ifdef i860
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void i860_insert_breakpoints();
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void i860_dbrk_breakpoints();
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#define BREAKPOINT_HERE(b,pc) ((b->act_addr[0] == pc) || (b->act_addr[1] == pc) ||(b->act_addr[2] == pc) || (b->act_addr[2] == pc))
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/* This is the sequence of bytes we insert for a breakpoint. */
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static char break_insn[] = BREAKPOINT;
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static char float_insn[] = BREAKFLOAT;
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#endif
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#define FOPMSK 0x4C000000
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#define DOPMSK 0x4C000200
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#define FOP860 0x48000000
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#define DOP860 0x48000200
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#define ALN32(a) ((( (int)(a) & 0x0007) == 0x04) )
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#define ALN64(a) ((( (int)(a) & 0x0007) == 0x00) )
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/*
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#define ISFOP(a) ((((adj_read_memory_integer(a)) & FOPMSK)==FOP860 ))
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#define ISCOR(a) ((!(((adj_read_memory_integer(a)) & FOPMSK)==FOP860 )))
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#define ISDOP(a) ((((adj_read_memory_integer(a)) & DOPMSK)==DOP860 ))
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*/
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#define ISFOP(a) ((((adj_read_memory_integer(a)) & FOPMSK)==FOP860 ))
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#define ISCOR(a) ((!(((adj_read_memory_integer(a)) & FOPMSK)==FOP860 )))
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#define ISDOP(a) ((((adj_read_memory_integer(a)) & DOPMSK)==DOP860 ))
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#define ISDIM(a) (\
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( ISDOP(a) && ALN64(a) && ISCOR(a+4)) || \
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((ISFOP(a) && ALN64(a) && ISCOR(a+4)) && (ISDOP(a-8) || ISDOP(a-0x10))) || \
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( ISCOR(a) && ALN32(a) && ISDOP(a-4)) || \
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((ISCOR(a) && ALN32(a) && ISFOP(a+4)) && (ISDOP(a-4) || ISDOP(a-0x0C))) \
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)
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/*
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#define ISDIM(a) (\
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( ISDOP(a) && ALN64(a) && ISCOR(a+4)) || \
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((ISFOP(a) && ALN64(a) && ISCOR(a+4)) && (ISDOP(a-8) || ISDOP(a-16))) || \
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( ISCOR(a) && ALN32(a) && ISDOP(a-4)) || \
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((ISCOR(a) && ALN32(a) && ISFOP(a+4)) && (ISDOP(a-4) || ISDOP(a-12))) \
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)
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*/
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#define FOPADR(a) ( ((int)(a) & 0xFFFFFFF8) )
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#define CORADR(a) ((((int)(a) & 0xFFFFFFFC ) | 0x04) )
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#define DMNEXT(a) ( ISDIM(a)?(ISDIM(a+1)?(a+2):(a+1)):(a+1) )
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#define STDIM (((*(int *)&(registers[REGISTER_BYTE(PS_REGNUM)])) & 0x6000) == 0x2000 )
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#define INDIM (((*(int *)&(registers[REGISTER_BYTE(PS_REGNUM)])) & 0x6000) == 0x4000 )
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#define ENDIM (((*(int *)&(registers[REGISTER_BYTE(PS_REGNUM)])) & 0x6000) == 0x6000 )
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#define DIM 8
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#define RIM 0x8004
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#define SIM 4
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#define ADDR_INC(a) (((int)(a) & 0x0FFF))
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#define SINGLE_STEP_MODE 1
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#define BREAK_MODE 0
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