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target/arm: use official org.gnu.gdb.aarch64.sve layout for registers

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While GDB can work with any XML description given to it there is
special handling for SVE registers on the GDB side which makes the
users life a little better. The changes aren't that major and all the
registers save the $vg reported the same. All that changes is:

  - report org.gnu.gdb.aarch64.sve
  - use gdb nomenclature for names and types
  - minor re-ordering of the types to match reference
  - re-enable ieee_half (as we know gdb supports it now)
  - $vg is now a 64 bit int
  - check $vN and $zN aliasing in test

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Machado <luis.machado@linaro.org>
Message-Id: <20210108224256.2321-11-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2021-01-08 22:42:46 +00:00
parent b9e10c6c75
commit 797920b952
3 changed files with 41 additions and 47 deletions
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2
target/arm/helper.c
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@ -276,7 +276,7 @@ static int arm_gdb_get_svereg(CPUARMState *env, GByteArray *buf, int reg)
* while the ZCR works in Vector Quads (VQ) which is 128bit chunks.
*/
int vq = sve_zcr_len_for_el(env, arm_current_el(env)) + 1;
return gdb_get_reg32(buf, vq * 2);
return gdb_get_reg64(buf, vq * 2);
}
default:
/* gdbstub asked for something out our range */