On 6/12/26 07:14, Matt Turner wrote:
Add support for saving and restoring f0-f15 across signal delivery.
The target_xtensa_xtregs_fp struct carries 32-bit f-regs for cores
with XTENSA_OPTION_FP_COPROCESSOR; target_xtensa_xtregs_dfp carries
64-bit f-regs for cores with XTENSA_OPTION_DFP_COPROCESSOR.
Lock the xtregs region via lock_user before reading on sigreturn,
since sc_xtregs is a user-space pointer that may lie outside the
locked sigframe.
Signed-off-by: Matt Turner<[email protected]>
---
linux-user/xtensa/signal.c | 96 ++++++++++++++++++++++++++++++++++----
1 file changed, 88 insertions(+), 8 deletions(-)
Reviewed-by: Richard Henderson <[email protected]>
r~
