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2002-08-18 Andrew Cagney <ac131313@redhat.com>

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* regcache.c (regcache_xfer_part): New function.
(regcache_raw_read_part): New function.
(regcache_raw_write_part): New function.
(regcache_cooked_read_part): New function.
(regcache_cooked_write_part): New function.
* regcache.h (regcache_raw_read_part): Declare.
(regcache_raw_write_part): Declare.
(regcache_cooked_read_part): Declare.
(regcache_cooked_write_part): Declare.
This commit is contained in:
Andrew Cagney 2002-08-19 00:43:41 +00:00
parent 0c528862c5
commit 06c0b04e1c
3 changed files with 109 additions and 0 deletions
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12
gdb/ChangeLog
View file

@ -1,3 +1,15 @@
2002-08-18 Andrew Cagney <ac131313@redhat.com>
* regcache.c (regcache_xfer_part): New function.
(regcache_raw_read_part): New function.
(regcache_raw_write_part): New function.
(regcache_cooked_read_part): New function.
(regcache_cooked_write_part): New function.
* regcache.h (regcache_raw_read_part): Declare.
(regcache_raw_write_part): Declare.
(regcache_cooked_read_part): Declare.
(regcache_cooked_write_part): Declare.
2002-08-18 Daniel Jacobowitz <drow@mvista.com>
* remote.c (remote_open_1): Add async_p.

80
gdb/regcache.c
View file

@ -916,6 +916,86 @@ write_register_bytes (int myregstart, char *myaddr, int inlen)
}
}
/* Perform a partial register transfer using a read, modify, write
operation. */
typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum,
void *buf);
typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum,
const void *buf);
void
regcache_xfer_part (struct regcache *regcache, int regnum,
int offset, int len, void *in, const void *out,
regcache_read_ftype *read, regcache_write_ftype *write)
{
struct regcache_descr *descr = regcache->descr;
bfd_byte *reg = alloca (descr->max_register_size);
gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]);
gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]);
/* Something to do? */
if (offset + len == 0)
return;
/* Read (when needed) ... */
if (in != NULL
|| offset > 0
|| offset + len < descr->sizeof_register[regnum])
{
gdb_assert (read != NULL);
read (regcache, regnum, reg);
}
/* ... modify ... */
if (in != NULL)
memcpy (in, reg + offset, len);
if (out != NULL)
memcpy (reg + offset, out, len);
/* ... write (when needed). */
if (out != NULL)
{
gdb_assert (write != NULL);
write (regcache, regnum, reg);
}
}
void
regcache_raw_read_part (struct regcache *regcache, int regnum,
int offset, int len, void *buf)
{
struct regcache_descr *descr = regcache->descr;
gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers);
regcache_xfer_part (regcache, regnum, offset, len, buf, NULL,
regcache_raw_read, regcache_raw_write);
}
void
regcache_raw_write_part (struct regcache *regcache, int regnum,
int offset, int len, const void *buf)
{
struct regcache_descr *descr = regcache->descr;
gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers);
regcache_xfer_part (regcache, regnum, offset, len, NULL, buf,
regcache_raw_read, regcache_raw_write);
}
void
regcache_cooked_read_part (struct regcache *regcache, int regnum,
int offset, int len, void *buf)
{
struct regcache_descr *descr = regcache->descr;
gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
regcache_xfer_part (regcache, regnum, offset, len, buf, NULL,
regcache_cooked_read, regcache_cooked_write);
}
void
regcache_cooked_write_part (struct regcache *regcache, int regnum,
int offset, int len, const void *buf)
{
struct regcache_descr *descr = regcache->descr;
gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
regcache_xfer_part (regcache, regnum, offset, len, NULL, buf,
regcache_cooked_read, regcache_cooked_write);
}
/* Return the contents of register REGNUM as an unsigned integer. */

17
gdb/regcache.h
View file

@ -42,6 +42,15 @@ extern void regcache_raw_read_signed (struct regcache *regcache,
int regnum, LONGEST *val);
extern void regcache_raw_read_unsigned (struct regcache *regcache,
int regnum, ULONGEST *val);
/* Partial transfer of a raw registers. These perform read, modify,
write style operations. */
void regcache_raw_read_part (struct regcache *regcache, int regnum,
int offset, int len, void *buf);
void regcache_raw_write_part (struct regcache *regcache, int regnum,
int offset, int len, const void *buf);
int regcache_valid_p (struct regcache *regcache, int regnum);
/* Transfer a cooked register [0..NUM_REGS+NUM_PSEUDO_REGS). */
@ -63,6 +72,14 @@ extern void regcache_cooked_read_signed (struct regcache *regcache,
extern void regcache_cooked_read_unsigned (struct regcache *regcache,
int regnum, ULONGEST *val);
/* Partial transfer of a cooked register. These perform read, modify,
write style operations. */
void regcache_cooked_read_part (struct regcache *regcache, int regnum,
int offset, int len, void *buf);
void regcache_cooked_write_part (struct regcache *regcache, int regnum,
int offset, int len, const void *buf);
/* Transfer a raw register [0..NUM_REGS) between the regcache and the
target. These functions are called by the target in response to a
target_fetch_registers() or target_store_registers(). */