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| From: | Richard Henderson |
| Subject: | Re: [Qemu-devel] [PATCH v2] linux-user: provide frame information in x86-64 safe_syscall |
| Date: | Mon, 6 Jun 2016 14:03:25 -0700 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 |
On 06/06/2016 11:56 AM, Peter Maydell wrote:
Use cfi directives in the x86-64 safe_syscall to allow gdb to get backtraces right from within it. (In particular this will be quite a common situation if the user interrupts QEMU while it's in a blocked safe-syscall: at the point of the syscall insn RBP is in use for something else, and so gdb can't find the frame then without assistance.) Signed-off-by: Peter Maydell <address@hidden> Reviewed-by: Richard Henderson <address@hidden> --- v1->v2 changes: minor tweaks as requested by rth
Reviewed-by: Richard Henderson <address@hidden> r~
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