/* Functions for manipulating expressions designed to be executed on the agent
- Copyright (C) 1998, 1999, 2000, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1998, 1999, 2000, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GDB.
/* Allocate a new, empty agent expression. */
struct agent_expr *
-new_agent_expr (CORE_ADDR scope)
+new_agent_expr (struct gdbarch *gdbarch, CORE_ADDR scope)
{
struct agent_expr *x = xmalloc (sizeof (*x));
+
x->len = 0;
x->size = 1; /* Change this to a larger value once
reallocation code is tested. */
x->buf = xmalloc (x->size);
+
+ x->gdbarch = gdbarch;
x->scope = scope;
+ /* Bit vector for registers used. */
+ x->reg_mask_len = 1;
+ x->reg_mask = xmalloc (x->reg_mask_len * sizeof (x->reg_mask[0]));
+ memset (x->reg_mask, 0, x->reg_mask_len * sizeof (x->reg_mask[0]));
+
return x;
}
free_agent_expr (struct agent_expr *x)
{
xfree (x->buf);
+ xfree (x->reg_mask);
xfree (x);
}
use the shortest representation. */
for (op = 0, size = 8; size < 64; size *= 2, op++)
{
- LONGEST lim = 1 << (size - 1);
+ LONGEST lim = ((LONGEST) 1) << (size - 1);
if (-lim <= l && l <= lim - 1)
break;
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;
+}
\f
{"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 */
};
int i;
int is_float = 0;
+ fprintf_filtered (f, _("Scope: %s\n"), paddress (x->gdbarch, x->scope));
+ fprintf_filtered (f, _("Reg mask:"));
+ for (i = 0; i < x->reg_mask_len; ++i)
+ fprintf_filtered (f, _(" %02x"), x->reg_mask[i]);
+ fprintf_filtered (f, _("\n"));
+
/* Check the size of the name array against the number of entries in
the enum, to catch additions that people didn't sync. */
if ((sizeof (aop_map) / sizeof (aop_map[0]))
}
}
+/* Add register REG to the register mask for expression AX. */
+void
+ax_reg_mask (struct agent_expr *ax, int reg)
+{
+ int byte = reg / 8;
+
+ /* Grow the bit mask if necessary. */
+ if (byte >= ax->reg_mask_len)
+ {
+ /* It's not appropriate to double here. This isn't a
+ string buffer. */
+ int new_len = byte + 1;
+ unsigned char *new_reg_mask = xrealloc (ax->reg_mask,
+ new_len * sizeof (ax->reg_mask[0]));
+ memset (new_reg_mask + ax->reg_mask_len, 0,
+ (new_len - ax->reg_mask_len) * sizeof (ax->reg_mask[0]));
+ ax->reg_mask_len = new_len;
+ ax->reg_mask = new_reg_mask;
+ }
+
+ ax->reg_mask[byte] |= 1 << (reg % 8);
+}
-/* Given an agent expression AX, fill in an agent_reqs structure REQS
- describing it. */
+/* Given an agent expression AX, fill in requirements and other descriptive
+ bits. */
void
-ax_reqs (struct agent_expr *ax, struct agent_reqs *reqs)
+ax_reqs (struct agent_expr *ax)
{
int i;
int height;
- /* Bit vector for registers used. */
- int reg_mask_len = 1;
- unsigned char *reg_mask = xmalloc (reg_mask_len * sizeof (reg_mask[0]));
-
/* Jump target table. targets[i] is non-zero iff we have found a
jump to offset i. */
char *targets = (char *) alloca (ax->len * sizeof (targets[0]));
/* Pointer to a description of the present op. */
struct aop_map *op;
- memset (reg_mask, 0, reg_mask_len * sizeof (reg_mask[0]));
memset (targets, 0, ax->len * sizeof (targets[0]));
memset (boundary, 0, ax->len * sizeof (boundary[0]));
- reqs->max_height = reqs->min_height = height = 0;
- reqs->flaw = agent_flaw_none;
- reqs->max_data_size = 0;
+ ax->max_height = ax->min_height = height = 0;
+ ax->flaw = agent_flaw_none;
+ ax->max_data_size = 0;
for (i = 0; i < ax->len; i += 1 + op->op_size)
{
if (ax->buf[i] > (sizeof (aop_map) / sizeof (aop_map[0])))
{
- reqs->flaw = agent_flaw_bad_instruction;
- xfree (reg_mask);
+ ax->flaw = agent_flaw_bad_instruction;
return;
}
if (!op->name)
{
- reqs->flaw = agent_flaw_bad_instruction;
- xfree (reg_mask);
+ ax->flaw = agent_flaw_bad_instruction;
return;
}
if (i + 1 + op->op_size > ax->len)
{
- reqs->flaw = agent_flaw_incomplete_instruction;
- xfree (reg_mask);
+ ax->flaw = agent_flaw_incomplete_instruction;
return;
}
source? */
if (targets[i] && (heights[i] != height))
{
- reqs->flaw = agent_flaw_height_mismatch;
- xfree (reg_mask);
+ ax->flaw = agent_flaw_height_mismatch;
return;
}
heights[i] = height;
height -= op->consumed;
- if (height < reqs->min_height)
- reqs->min_height = height;
+ if (height < ax->min_height)
+ ax->min_height = height;
height += op->produced;
- if (height > reqs->max_height)
- reqs->max_height = height;
+ if (height > ax->max_height)
+ ax->max_height = height;
- if (op->data_size > reqs->max_data_size)
- reqs->max_data_size = op->data_size;
+ if (op->data_size > ax->max_data_size)
+ ax->max_data_size = op->data_size;
/* For jump instructions, check that the target is a valid
offset. If it is, record the fact that that location is a
int target = read_const (ax, i + 1, 2);
if (target < 0 || target >= ax->len)
{
- reqs->flaw = agent_flaw_bad_jump;
- xfree (reg_mask);
+ ax->flaw = agent_flaw_bad_jump;
return;
}
{
if (heights[target] != height)
{
- reqs->flaw = agent_flaw_height_mismatch;
- xfree (reg_mask);
+ ax->flaw = agent_flaw_height_mismatch;
return;
}
}
{
if (!targets[i + 3])
{
- reqs->flaw = agent_flaw_hole;
- xfree (reg_mask);
+ ax->flaw = agent_flaw_hole;
return;
}
if (aop_reg == op - aop_map)
{
int reg = read_const (ax, i + 1, 2);
- int byte = reg / 8;
-
- /* Grow the bit mask if necessary. */
- if (byte >= reg_mask_len)
- {
- /* It's not appropriate to double here. This isn't a
- string buffer. */
- int new_len = byte + 1;
- reg_mask = xrealloc (reg_mask,
- new_len * sizeof (reg_mask[0]));
- memset (reg_mask + reg_mask_len, 0,
- (new_len - reg_mask_len) * sizeof (reg_mask[0]));
- reg_mask_len = new_len;
- }
- reg_mask[byte] |= 1 << (reg % 8);
+ ax_reg_mask (ax, reg);
}
}
for (i = 0; i < ax->len; i++)
if (targets[i] && !boundary[i])
{
- reqs->flaw = agent_flaw_bad_jump;
- xfree (reg_mask);
+ ax->flaw = agent_flaw_bad_jump;
return;
}
- reqs->final_height = height;
- reqs->reg_mask_len = reg_mask_len;
- reqs->reg_mask = reg_mask;
+ ax->final_height = height;
}
projects / deliverable / binutils-gdb.git / blobdiff