forked from Imagelibrary/binutils-gdb
Print compare bits in human readible form
This commit is contained in:
Michael Meissner
117
sim/tic80/misc.c
117
sim/tic80/misc.c
@@ -1,5 +1,5 @@
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/* TIc80 Simulator.
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Copyright (C) 1997 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of GDB, the GNU debugger.
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@@ -137,6 +137,70 @@ tic80_init_trace (void)
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tic80_size_name = max_len + sizeof(":m") - 1 + sizeof (":s") - 1;
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}
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/* Given an integer which is the result of a comparison, return a string
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giving which bits are set. */
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static char *
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tic80_trace_cmp_internal (unsigned32 flag)
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{
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struct cmp_bits { unsigned32 bit; char *string; };
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static char buffer[32*8];
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static struct cmp_bits bits[] =
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{
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{ BIT32(29), "hs" },
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{ BIT32(28), "lo" },
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{ BIT32(27), "ls" },
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{ BIT32(26), "hi" },
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{ BIT32(25), "ge" },
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{ BIT32(24), "lt" },
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{ BIT32(23), "le" },
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{ BIT32(22), "gt" },
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{ BIT32(21), "ne" },
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{ BIT32(20), "eq" },
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{ BIT32(19), "hs.h" },
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{ BIT32(18), "lo.h" },
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{ BIT32(17), "ls.h" },
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{ BIT32(16), "hi.h" },
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{ BIT32(15), "ge.h" },
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{ BIT32(14), "lt.h" },
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{ BIT32(13), "le.h" },
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{ BIT32(12), "gt.h" },
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{ BIT32(11), "ne.h" },
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{ BIT32(10), "eq.h" },
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{ BIT32( 9), "hs.b" },
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{ BIT32( 8), "lo.b" },
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{ BIT32( 7), "ls.b" },
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{ BIT32( 6), "hi.b" },
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{ BIT32( 5), "ge.b" },
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{ BIT32( 4), "lt.b" },
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{ BIT32( 3), "le.b" },
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{ BIT32( 2), "gt.b" },
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{ BIT32( 1), "ne.b" },
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{ BIT32( 0), "eq.b" },
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{ 0, (char *)0 },
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};
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int i;
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char *p = buffer;
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for (i = 0; bits[i].bit != 0; i++)
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{
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if ((flag & bits[i].bit) != 0)
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{
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if (p != buffer)
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*p++ = ' ';
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strcpy (p, bits[i].string);
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p += strlen (p);
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}
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}
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*p = '\0';
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return buffer;
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}
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/* Trace the result of an ALU operation with 2 integer inputs and an integer output */
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char *
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tic80_trace_alu3 (int indx,
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@@ -156,6 +220,26 @@ tic80_trace_alu3 (int indx,
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return tic80_trace_buffer;
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}
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/* Trace the result of an ALU operation with 2 integer inputs and an integer output
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that sets the bits from a compare instruction. */
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char *
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tic80_trace_cmp (int indx,
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unsigned32 result,
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unsigned32 input1,
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unsigned32 input2)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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sprintf (tic80_trace_buffer, "%-*s 0x%.*lx/%*ld 0x%.*lx/%*ld => 0x%.*lx %s",
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tic80_size_name, itable[indx].name,
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SIZE_HEX, input1, SIZE_DECIMAL, (long)(signed32)input1,
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SIZE_HEX, input2, SIZE_DECIMAL, (long)(signed32)input2,
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SIZE_HEX, result, tic80_trace_cmp_internal (result));
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return tic80_trace_buffer;
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}
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/* Trace the result of an ALU operation with 1 integer input and an integer output */
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char *
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tic80_trace_alu2 (int indx,
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@@ -222,7 +306,7 @@ tic80_trace_shift (int indx,
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SIZE_HEX, result, SIZE_DECIMAL, (long)(signed32)result);
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return tic80_trace_buffer;
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}
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}
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/* Trace the result of an FPU operation with 2 floating point inputs and a floating point output */
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void
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@@ -287,7 +371,7 @@ tic80_trace_fpu1 (SIM_DESC sd,
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SIZE_HEX + SIZE_DECIMAL, sim_fpu_2d (&result));
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}
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/* Trace the result of an FPU operation with 1 integer input and an integer output */
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/* Trace the result of an FPU operation with 2 floating point inputs and an integer output */
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void
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tic80_trace_fpu2i (SIM_DESC sd,
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sim_cpu *cpu,
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@@ -309,6 +393,29 @@ tic80_trace_fpu2i (SIM_DESC sd,
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SIZE_HEX, result, SIZE_DECIMAL, (long)(signed32)result);
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}
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/* Trace the result of an FPU operation with 2 floating point inputs and an integer output
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that is the result of a comparison. */
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void
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tic80_trace_fpu2cmp (SIM_DESC sd,
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sim_cpu *cpu,
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sim_cia cia,
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int indx,
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unsigned32 result,
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sim_fpu input1,
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sim_fpu input2)
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{
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if (!tic80_size_name)
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tic80_init_trace ();
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trace_one_insn (sd, cpu, cia.ip, 1,
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itable[indx].file, itable[indx].line_nr, "fpu",
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"%-*s %*f %*f => 0x%.*lx %s",
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tic80_size_name, itable[indx].name,
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SIZE_HEX + SIZE_DECIMAL + 3, sim_fpu_2d (&input1),
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SIZE_HEX + SIZE_DECIMAL + 3, sim_fpu_2d (&input2),
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SIZE_HEX, result, tic80_trace_cmp_internal (result));
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}
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/* Trace the result of a NOP operation */
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char *
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tic80_trace_nop (int indx)
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@@ -389,7 +496,7 @@ tic80_trace_cond_br (int indx,
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SIZE_HEX, target, SIZE_DECIMAL, "",
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SIZE_HEX, cond, SIZE_DECIMAL, (long)(signed32)cond);
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return tic80_trace_buffer;
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return tic80_trace_buffer;
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}
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/* Trace the result of a unconditional branch operation */
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@@ -406,7 +513,7 @@ tic80_trace_ucond_br (int indx,
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SIZE_HEX, target, (SIZE_DECIMAL*2) + SIZE_HEX + 4, "",
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SIZE_HEX, target);
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return tic80_trace_buffer;
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return tic80_trace_buffer;
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}
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/* Trace the result of a load or store operation with 2 integer addresses
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