linux-user: Fix structure target_ucontext for MIPS

qemu with hax to log dma reads & writes jcs.org/2018/11/12/vfio

Structure ucontext for MIPS is defined in the following way in
Linux kernel:

(arch/mips/include/uapi/asm/ucontext.h, lines 54-64)

struct ucontext {
/* Historic fields matching asm-generic */
unsigned long uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
struct sigcontext uc_mcontext;
sigset_t uc_sigmask;

/* Extended context structures may follow ucontext */
unsigned long long uc_extcontext[0];
};

Fix the structure target_ucontext for MIPS to reflect the definition
above, except the correction for field uc_extcontext, which will
follow at some later time.

Fixes: 94c5495d

Reported-by: Dragan Mladjenovic <dmladjenovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1562931470-3700-2-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

authored by

Aleksandar Markovic and committed by

Laurent Vivier 6 years ago 4ced996f a1a4d49f

+2 -3

1 changed file

expand all

linux-user

mips

signal.c

+2 -3

linux-user/mips/signal.c

··· 71 71 }; 72 72 73 73 struct target_ucontext { 74 - target_ulong tuc_flags; 75 - target_ulong tuc_link; 74 + abi_ulong tuc_flags; 75 + abi_ulong tuc_link; 76 76 target_stack_t tuc_stack; 77 - target_ulong pad0; 78 77 struct target_sigcontext tuc_mcontext; 79 78 target_sigset_t tuc_sigmask; 80 79 };