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2009-12-28 Stan Shebs <stan@codesourcery.com>

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Add trace state variables.
	* ax.h (enum agent_op): Add getv, setv, and tracev.
	(ax_tsv): Declare.
	* ax-gdb.c: Include tracepoint.h.
	(gen_expr): Handle BINOP_ASSIGN, BINOP_ASSIGN_MODIFY, and
	OP_INTERNALVAR.
	(gen_expr_binop_rest): New function, split from gen_expr.
	* ax-general.c (ax_tsv): New function.
	(aop_map): Add new bytecodes.
	* tracepoint.h (struct trace_state_variable): New struct.
	(tsv_s): New typedef.
	(find_trace_state_variable): Declare.
	* tracepoint.c (tvariables): New global.
	(next_tsv_number): New global.
	(create_trace_state_variable): New function.
	(find_trace_state_variable): New function.
	(delete_trace_state_variable): New function.
	(trace_variable_command): New function.
	(delete_trace_variable_command): New function.
	(tvariables_info): New function.
	(trace_start_command): Download tsvs with initial values.
	(_initialize_tracepoint): Add new commands.
	* NEWS: Mention the addition of trace state variables.

==> doc/ChangeLog <==
2009-12-28  Stan Shebs  <stan@codesourcery.com>

	* gdb.texinfo (Trace State Variables): New section.
	(Tracepoint Packets): Describe trace state variable packets.
	* agentexpr.texi (Bytecode Descriptions): Describe trace state
	variable bytecodes.

==> testsuite/ChangeLog <==
2009-12-28  Stan Shebs  <stan@codesourcery.com>

	* gdb.trace/tsv.exp: New file.
	* gdb.base/completion.exp: Update ambiguous info output.
This commit is contained in:
Stan Shebs
2009-12-28 23:39:10 +00:00
parent ae77ee9a7f
commit f61e138d9a
13 changed files with 792 additions and 120 deletions
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22
gdb/ax-general.c
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@ -272,6 +272,22 @@ ax_reg (struct agent_expr *x, int reg)
x->buf[x->len + 2] = (reg) & 0xff;
x->len += 3;
}
/* Assemble code to operate on a trace state variable. */
void
ax_tsv (struct agent_expr *x, enum agent_op op, int num)
{
/* Make sure the tsv number is in range. */
if (num < 0 || num > 0xffff)
internal_error (__FILE__, __LINE__, _("ax-general.c (ax_tsv): variable number is %d, out of range"), num);
grow_expr (x, 3);
x->buf[x->len] = op;
x->buf[x->len + 1] = (num >> 8) & 0xff;
x->buf[x->len + 2] = (num) & 0xff;
x->len += 3;
}
@ -324,9 +340,9 @@ struct aop_map aop_map[] =
{"pop", 0, 0, 1, 0}, /* 0x29 */
{"zero_ext", 1, 0, 1, 1}, /* 0x2a */
{"swap", 0, 0, 2, 2}, /* 0x2b */
{0, 0, 0, 0, 0}, /* 0x2c */
{0, 0, 0, 0, 0}, /* 0x2d */
{0, 0, 0, 0, 0}, /* 0x2e */
{"getv", 2, 0, 0, 1}, /* 0x2c */
{"setv", 2, 0, 0, 1}, /* 0x2d */
{"tracev", 2, 0, 0, 1}, /* 0x2e */
{0, 0, 0, 0, 0}, /* 0x2f */
{"trace16", 2, 0, 1, 1}, /* 0x30 */
};