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Add hw_{malloc,zalloc,free} functions to hw_device. Any memory

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allocated using these functions is reclaimed when the corresponding
device is deleted.
This commit is contained in:
Andrew Cagney
1998-03-22 05:06:27 +00:00
parent b1e9223cee
commit e5f0d498af
7 changed files with 1335 additions and 8 deletions
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68
sim/common/hw-base.c
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@@ -24,10 +24,6 @@
/* LATER: #include "hwconfig.h" */
struct hw_base_data {
int finished_p;
const struct hw_device_descriptor *descriptor;
};
extern const struct hw_device_descriptor dv_core_descriptor[];
extern const struct hw_device_descriptor dv_pal_descriptor[];
const struct hw_device_descriptor *hw_descriptors[] = {
@@ -50,6 +46,11 @@ const struct hw_device_descriptor *hw_descriptors[] = {
#include <ctype.h>
struct hw_base_data {
int finished_p;
const struct hw_device_descriptor *descriptor;
hw_delete_callback *to_delete;
};
static int
generic_hw_unit_decode (struct hw *bus,
@@ -287,6 +288,14 @@ panic_hw_port_event (struct hw *me,
hw_abort (me, "no port method");
}
static void
ignore_hw_delete (struct hw *me)
{
/* NOP */
}
static const char *
full_name_of_hw (struct hw *leaf,
@@ -345,6 +354,7 @@ hw_create (SIM_DESC sd,
const char *unit,
const char *args)
{
/* NOTE: HW must be allocated using ZALLOC, others use HW_ZALLOC */
struct hw *hw = ZALLOC (struct hw);
/* our identity */
@@ -391,6 +401,10 @@ hw_create (SIM_DESC sd,
else
hw->path_of_hw = "/";
/* create our base type */
hw->base_of_hw = HW_ZALLOC (hw, struct hw_base_data);
hw->base_of_hw->finished_p = 0;
/* our callbacks */
set_hw_io_read_buffer (hw, panic_hw_io_read_buffer);
set_hw_io_write_buffer (hw, panic_hw_io_write_buffer);
@@ -402,6 +416,7 @@ hw_create (SIM_DESC sd,
set_hw_unit_size_to_attach_size (hw, generic_hw_unit_size_to_attach_size);
set_hw_attach_address (hw, passthrough_hw_attach_address);
set_hw_detach_address (hw, passthrough_hw_detach_address);
set_hw_delete (hw, ignore_hw_delete);
/* locate a descriptor */
{
@@ -417,13 +432,11 @@ hw_create (SIM_DESC sd,
{
if (strcmp (family, entry->family) == 0)
{
hw->base_of_hw = ZALLOC (struct hw_base_data);
hw->base_of_hw->descriptor = entry;
hw->base_of_hw->finished_p = 0;
}
}
}
if (hw->base_of_hw == NULL)
if (hw->base_of_hw->descriptor == NULL)
{
hw_abort (parent, "Unknown device `%s'", family);
}
@@ -465,3 +478,44 @@ hw_finish (struct hw *me)
me->base_of_hw->descriptor->to_finish (me);
me->base_of_hw->finished_p = 1;
}
void
hw_delete (struct hw *me)
{
/* give the object a chance to tidy up */
me->base_of_hw->to_delete (me);
/* now unlink us from the tree */
if (hw_parent (me))
{
struct hw **sibling = &hw_parent (me)->child_of_hw;
while (*sibling != NULL)
{
if (*sibling == me)
{
*sibling = me->sibling_of_hw;
me->sibling_of_hw = NULL;
me->parent_of_hw = NULL;
break;
}
}
}
/* some sanity checks */
if (hw_child (me) != NULL)
{
hw_abort (me, "attempt to delete device with children");
}
if (hw_sibling (me) != NULL)
{
hw_abort (me, "attempt to delete device with siblings");
}
/* blow away all memory belonging to the device */
hw_free_all (me);
/* finally */
zfree (me->base_of_hw);
zfree (me);
}