On 10/19/21 9:44 AM, Warner Losh wrote:
Arm specific user context structures for signal handling and the closely
related trap frame.
Signed-off-by: Stacey Son <s...@freebsd.org>
Signed-off-by: Warner Losh <i...@bsdimp.com>
---
bsd-user/arm/target_arch_signal.h | 38 +++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/bsd-user/arm/target_arch_signal.h
b/bsd-user/arm/target_arch_signal.h
index 9fee58ca9c..67355ff28f 100644
--- a/bsd-user/arm/target_arch_signal.h
+++ b/bsd-user/arm/target_arch_signal.h
@@ -90,4 +90,42 @@ typedef struct target_mcontext {
} __fpu;
} target_mcontext_t;
+typedef struct target_ucontext {
+ target_sigset_t uc_sigmask;
+ target_mcontext_t uc_mcontext;
+ abi_ulong uc_link;
+ target_stack_t uc_stack;
+ int32_t uc_flags;
+ int32_t __spare__[4];
+} target_ucontext_t;
This is from the common <sys/_ucontext.h>. Is there any way we can share that here in
qemu as well?
+struct target_sigframe {
+ target_siginfo_t sf_si; /* saved siginfo */
+ target_ucontext_t sf_uc; /* saved ucontext */
+};
You're missing the storage for
mcontext_vfp_t sf_vfp
the address of which goes in mcontext_t.mc_vfp_ptr (which isn't in the version of
mcontext_t from patch 18).
+/* compare to sys/arm/include/frame.h */
+struct target_trapframe {
+ abi_ulong tf_spsr; /* Zero on arm26 */
+ abi_ulong tf_r0;
+ abi_ulong tf_r1;
+ abi_ulong tf_r2;
+ abi_ulong tf_r3;
+ abi_ulong tf_r4;
+ abi_ulong tf_r5;
+ abi_ulong tf_r6;
+ abi_ulong tf_r7;
+ abi_ulong tf_r8;
+ abi_ulong tf_r9;
+ abi_ulong tf_r10;
+ abi_ulong tf_r11;
+ abi_ulong tf_r12;
+ abi_ulong tf_usr_sp;
+ abi_ulong tf_usr_lr;
+ abi_ulong tf_svc_sp; /* Not used on arm26 */
+ abi_ulong tf_svc_lr; /* Not used on arm26 */
+ abi_ulong tf_pc;
+};
This is not used by the user abi for signals. It is a kernel structure for its own
internal trap handling. Why are you including it?
r~
