Hello All:
Please help check this patch when you have time.
After this patch, we can let gcc testsuite cleanup-10 run successfully.
Next, I shall continue to implement floating point instructions: remove
(u)int64_to_float64 from fdouble implementation.
Thanks.
On 3/15/16 05:51, cheng...@emindsoft.com.cn wrote:
> From: Chen Gang <cheng...@emindsoft.com.cn>
>
> Original implementation uses do_rt_sigreturn directly in host space,
> when a guest program is in unwind procedure in guest space, it will get
> an incorrect restore address, then causes unwind failure.
>
> Also cleanup the original incorrect indentation.
>
> Signed-off-by: Chen Gang <gang.chen.5...@gmail.com>
> ---
> linux-user/signal.c | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/linux-user/signal.c b/linux-user/signal.c
> index 919aa83..0e3b1c6 100644
> --- a/linux-user/signal.c
> +++ b/linux-user/signal.c
> @@ -5566,8 +5566,13 @@ struct target_rt_sigframe {
> unsigned char save_area[16]; /* caller save area */
> struct target_siginfo info;
> struct target_ucontext uc;
> + abi_ulong retcode[2];
> };
>
> +#define INSN_MOVELI_R10_139 0x00045fe551483000ULL /* { moveli r10, 139 } */
> +#define INSN_SWINT1 0x286b180051485000ULL /* { swint1 } */
> +
> +
> static void setup_sigcontext(struct target_sigcontext *sc,
> CPUArchState *env, int signo)
> {
> @@ -5643,9 +5648,12 @@ static void setup_rt_frame(int sig, struct
> target_sigaction *ka,
> __put_user(target_sigaltstack_used.ss_size,
> &frame->uc.tuc_stack.ss_size);
> setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo);
>
> - restorer = (unsigned long) do_rt_sigreturn;
> if (ka->sa_flags & TARGET_SA_RESTORER) {
> - restorer = (unsigned long) ka->sa_restorer;
> + restorer = (unsigned long) ka->sa_restorer;
> + } else {
> + __put_user(INSN_MOVELI_R10_139, &frame->retcode[0]);
> + __put_user(INSN_SWINT1, &frame->retcode[1]);
> + restorer = (unsigned long)frame->retcode;
> }
> env->pc = (unsigned long) ka->_sa_handler;
> env->regs[TILEGX_R_SP] = (unsigned long) frame;
>
--
Chen Gang (陈刚)
Managing Natural Environments is the Duty of Human Beings.
