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authorPedro Alves <palves@redhat.com>2011-03-18 18:38:44 +0000
committerPedro Alves <palves@redhat.com>2011-03-18 18:38:44 +0000
commit05d1431c1e0a4ecf30462109f5fb9876d78b7b4a (patch)
tree76012c85051dd07166944e314a83502d47b1ba1a /gdb/xtensa-tdep.c
parent5548b4ce8ccff9f4a198fdfbcc47a83baa9ed876 (diff)
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* regcache.h (regcache_raw_read, regcache_raw_read_signed) (regcache_raw_read_unsigned, regcache_raw_read_signed) (regcache_raw_read_unsigned, regcache_raw_read_part) (regcache_cooked_read, regcache_cooked_read_signed) (regcache_cooked_read_unsigned, regcache_cooked_read_part) (regcache_cooked_read_ftype): Change return to enum register_status. * regcache.c: Include exceptions.h (regcache_save): Adjust to handle REG_UNAVAILABLE registers. (do_cooked_read): Change return to enum register_status. Always forward to regcache_cooked_read. (regcache_raw_read): Change return to enum register_status. If the register is not REG_VALID, memset the buffer. Return the register's status. (regcache_raw_read_signed): Handle non-REG_VALID registers and return the register's status. (regcache_raw_read_unsigned): Ditto. (regcache_cooked_read): Change return to enum register_status. Assert that with read-only regcaches, the register's status must be known. If the regcache is read-only, and the register is not REG_VALID, memset the buffer. Return the register's status. (regcache_cooked_read_signed): Change return to enum register_status. Handle non-REG_VALID registers and return the register's status. (regcache_cooked_read_unsigned): Change return to enum register_status. Handle non-REG_VALID registers and return the register's status. (regcache_xfer_part, regcache_raw_read_part) (regcache_cooked_read_part): Change return to enum register_status. Return the register's status. (regcache_read_pc): Throw NOT_AVAILABLE_ERROR if the register is unavailable. (regcache_dump): Handle unavailable cooked registers. * frame.c (do_frame_register_read): Adjust interface to match regcache_cooked_read_ftype. * gdbarch.sh (pseudo_register_read): Change return to enum register_status. * gdbarch.h, gdbarch.c: Regenerate. * i386-tdep.h (i386_pseudo_register_read): Change return to enum register_status. * i386-tdep.c (i386_pseudo_register_read): Change return to enum register_status. If reading a raw register indicates the raw register is not valid, return the raw register's status, otherwise, return REG_VALID. * amd64-tdep.c (amd64_pseudo_register_read): Change return to enum register_status. Handle non-REG_VALID raw registers and return the register's status. * arm-tdep.c (arm_neon_quad_read) (arm_pseudo_read): Change return to enum register_status. Handle non-REG_VALID raw registers and return the register's status. * avr-tdep.c (avr_pseudo_register_read): Ditto. * frv-tdep.c (frv_pseudo_register_read): Ditto. * h8300-tdep.c (h8300_pseudo_register_read): Ditto. * hppa-tdep.c (hppa_pseudo_register_read): Ditto. * m32c-tdep.c (m32c_move_reg_t): Change return to enum register_status. (m32c_raw_read, m32c_raw_write, m32c_banked_read) (m32c_banked_write, m32c_sb_read, m32c_sb_write, m32c_part_read) (m32c_part_write, m32c_cat_read, m32c_cat_write) (m32c_r3r2r1r0_read, m32c_r3r2r1r0_write) (m32c_pseudo_register_read): Change return to enum register_status. Adjust. * m68hc11-tdep.c (m68hc11_pseudo_register_read): Change return to enum register_status. Return the register's status. * mep-tdep.c (mep_pseudo_cr32_read): Change return to enum register_status. Return the register's status. (mep_pseudo_cr64_read, mep_pseudo_register_read): Ditto. * mips-tdep.c (mips_pseudo_register_read): Ditto. * mt-tdep.c (mt_pseudo_register_read): Ditto. * rs6000-tdep.c (move_ev_register_func): New typedef. (e500_move_ev_register): Use it. Change return to enum register_status. Return the register's status. (do_regcache_raw_read): New function. (do_regcache_raw_write): New function. (e500_pseudo_register_read): Change return to enum register_status. Return the register's status. Use do_regcache_raw_read. (e500_pseudo_register_write): Adjust. Use do_regcache_raw_write. (dfp_pseudo_register_read): Change return to enum register_status. Return the register's status. (vsx_pseudo_register_read): Ditto. (efpr_pseudo_register_read): Ditto. (rs6000_pseudo_register_read): Ditto. * s390-tdep.c (s390_pseudo_register_read): Change return to enum register_status. Return the register's status. * sh64-tdep.c (pseudo_register_read_portions): New function. (sh64_pseudo_register_read): Change return to enum register_status. Use pseudo_register_read_portions. Return the register's status. * ia64-tdep.c (ia64_pseudo_register_read): Change return to enum register_status. Return the register's status. * sh-tdep.c (pseudo_register_read_portions): New function. (sh_pseudo_register_read): Change return to enum register_status. Use pseudo_register_read_portions. Return the register's status. * sparc-tdep.c (sparc32_pseudo_register_read): Change return to enum register_status. Return the register's status. * sparc64-tdep.c (sparc64_pseudo_register_read): Ditto. * spu-tdep.c (spu_pseudo_register_read_spu) (spu_pseudo_register_read): Ditto. * xtensa-tdep.c (xtensa_register_read_masked) (xtensa_pseudo_register_read): Ditto. * bfin-tdep.c (bfin_pseudo_register_read): Ditto.
Diffstat (limited to 'gdb/xtensa-tdep.c')
-rw-r--r--gdb/xtensa-tdep.c36
1 files changed, 22 insertions, 14 deletions
diff --git a/gdb/xtensa-tdep.c b/gdb/xtensa-tdep.c
index 1bb97ba..316a8cf 100644
--- a/gdb/xtensa-tdep.c
+++ b/gdb/xtensa-tdep.c
@@ -453,7 +453,7 @@ xtensa_register_write_masked (struct regcache *regcache,
/* Read a tie state or mapped registers. Read the masked areas
of the registers and assemble them into a single value. */
-static void
+static enum register_status
xtensa_register_read_masked (struct regcache *regcache,
xtensa_register_t *reg, gdb_byte *buffer)
{
@@ -479,8 +479,12 @@ xtensa_register_read_masked (struct regcache *regcache,
int r = mask->mask[i].reg_num;
if (r >= 0)
{
+ enum register_status status;
ULONGEST val;
- regcache_cooked_read_unsigned (regcache, r, &val);
+
+ status = regcache_cooked_read_unsigned (regcache, r, &val);
+ if (status != REG_VALID)
+ return status;
regval = (unsigned int) val;
}
else
@@ -535,12 +539,14 @@ xtensa_register_read_masked (struct regcache *regcache,
buffer[i] = mem & 0xff;
mem >>= 8;
}
+
+ return REG_VALID;
}
/* Read pseudo registers. */
-static void
+static enum register_status
xtensa_pseudo_register_read (struct gdbarch *gdbarch,
struct regcache *regcache,
int regnum,
@@ -561,16 +567,20 @@ xtensa_pseudo_register_read (struct gdbarch *gdbarch,
&& (regnum <= gdbarch_tdep (gdbarch)->a0_base + 15))
{
gdb_byte *buf = (gdb_byte *) alloca (MAX_REGISTER_SIZE);
+ enum register_status status;
- regcache_raw_read (regcache, gdbarch_tdep (gdbarch)->wb_regnum, buf);
+ status = regcache_raw_read (regcache,
+ gdbarch_tdep (gdbarch)->wb_regnum,
+ buf);
+ if (status != REG_VALID)
+ return status;
regnum = arreg_number (gdbarch, regnum,
extract_unsigned_integer (buf, 4, byte_order));
}
/* We can always read non-pseudo registers. */
if (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch))
- regcache_raw_read (regcache, regnum, buffer);
-
+ return regcache_raw_read (regcache, regnum, buffer);
/* We have to find out how to deal with priveleged registers.
Let's treat them as pseudo-registers, but we cannot read/write them. */
@@ -581,6 +591,7 @@ xtensa_pseudo_register_read (struct gdbarch *gdbarch,
buffer[1] = (gdb_byte)0;
buffer[2] = (gdb_byte)0;
buffer[3] = (gdb_byte)0;
+ return REG_VALID;
}
/* Pseudo registers. */
else if (regnum >= 0
@@ -598,7 +609,7 @@ xtensa_pseudo_register_read (struct gdbarch *gdbarch,
{
warning (_("cannot read register %s"),
xtensa_register_name (gdbarch, regnum));
- return;
+ return REG_VALID;
}
}
@@ -609,26 +620,23 @@ xtensa_pseudo_register_read (struct gdbarch *gdbarch,
if (flags & xtTargetFlagsUseFetchStore)
{
warning (_("cannot read register"));
- return;
+ return REG_VALID;
}
/* On some targets (esp. simulators), we can always read the reg. */
else if ((flags & xtTargetFlagsNonVisibleRegs) == 0)
{
warning (_("cannot read register"));
- return;
+ return REG_VALID;
}
}
/* We can always read mapped registers. */
else if (type == xtRegisterTypeMapped || type == xtRegisterTypeTieState)
- {
- xtensa_register_read_masked (regcache, reg, buffer);
- return;
- }
+ return xtensa_register_read_masked (regcache, reg, buffer);
/* Assume that we can read the register. */
- regcache_raw_read (regcache, regnum, buffer);
+ return regcache_raw_read (regcache, regnum, buffer);
}
else
internal_error (__FILE__, __LINE__,