diff options
| author | Luis Machado <luis.machado@linaro.org> | 2020-03-18 13:06:05 -0300 |
|---|---|---|
| committer | Luis Machado <luis.machado@linaro.org> | 2020-12-10 11:45:08 -0300 |
| commit | 6afcd2d4161165fd976c55a9792dbcccd2d5d106 (patch) | |
| tree | fb937c4e5014dfc25d5b05162d78f5e13af25f4c /gdb/aarch64-tdep.h | |
| parent | 15cc148fb817bc1eb91aa16e5d94e39ebafc11ee (diff) | |
| download | gdb-6afcd2d4161165fd976c55a9792dbcccd2d5d106.zip gdb-6afcd2d4161165fd976c55a9792dbcccd2d5d106.tar.gz gdb-6afcd2d4161165fd976c55a9792dbcccd2d5d106.tar.bz2 | |
[AArch64] SVE/FPSIMD fixup for big endian
The FPSIMD dump in signal frames and ptrace FPSIMD dump in the SVE context
structure follows the target endianness, whereas the SVE dumps are
endianness-independent (LE).
Therefore, when the system is in BE mode, we need to reverse the bytes
for the FPSIMD data.
Given the V registers are larger than 64-bit, I've added a way for value
bytes to be set, as opposed to passing a 64-bit fixed quantity. This fits
nicely with the unwinding *_got_bytes function and makes the trad-frame
more flexible and capable of saving larger registers.
The memory for the bytes is allocated via the frame obstack, so it gets freed
after we're done inspecting the frame.
gdb/ChangeLog:
2020-12-10 Luis Machado <luis.machado@linaro.org>
* aarch64-linux-tdep.c (aarch64_linux_restore_vreg) New function.
(aarch64_linux_sigframe_init): Call aarch64_linux_restore_vreg.
* aarch64-tdep.h (V_REGISTER_SIZE): Move to ...
* arch/aarch64.h: ... here.
* nat/aarch64-sve-linux-ptrace.c: Include endian.h.
(aarch64_maybe_swab128): New function.
(aarch64_sve_regs_copy_to_reg_buf)
(aarch64_sve_regs_copy_from_reg_buf): Adjust FPSIMD entries.
* trad-frame.c (trad_frame_reset_saved_regs): Initialize
the data field.
(TF_REG_VALUE_BYTES): New enum value.
(trad_frame_value_bytes_p): New function.
(trad_frame_set_value_bytes): New function.
(trad_frame_set_reg_value_bytes): New function.
(trad_frame_get_prev_register): Handle register values saved as bytes.
* trad-frame.h (trad_frame_set_reg_value_bytes): New prototype.
(struct trad_frame_saved_reg) <data>: New field.
(trad_frame_set_value_bytes): New prototype.
(trad_frame_value_bytes_p): New prototype.
Diffstat (limited to 'gdb/aarch64-tdep.h')
| -rw-r--r-- | gdb/aarch64-tdep.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/gdb/aarch64-tdep.h b/gdb/aarch64-tdep.h index 76ff812..7d035c1 100644 --- a/gdb/aarch64-tdep.h +++ b/gdb/aarch64-tdep.h @@ -48,7 +48,6 @@ struct regset; #define H_REGISTER_SIZE 2 #define S_REGISTER_SIZE 4 #define D_REGISTER_SIZE 8 -#define V_REGISTER_SIZE 16 #define Q_REGISTER_SIZE 16 /* Total number of general (X) registers. */ |