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7 Commits
Author SHA1 Message Date
Richard Henderson ffe98631b3 common-user/host/ppc: Implement safe-syscall.inc.S 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220729172141.1789105-2-richard.henderson@linaro.org>
 2023-01-23 14:39:48 -10:00
Richard Henderson 620d0b49a4 common-user/host/sparc64: Fix safe_syscall_base 
Use the "retl" instead of "ret" instruction alias, since we
do not allocate a register window in this function.

Fix the offset to the first stacked parameter, which lies
beyond the register window save area.

Fixes: 95c021dac8 ("linux-user/host/sparc64: Add safe-syscall.inc.S")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2022-02-09 08:46:23 +11:00
Richard Henderson fb084237a3 common-user: Really fix i386 calls to safe_syscall_set_errno_tail 
Brown bag time: offset 0 from esp is the return address,
offset 4 is the first argument.

Fixes: d7478d4229 ("common-user: Fix tail calls to safe_syscall_set_errno_tail")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2022-01-04 21:14:23 -08:00
Richard Henderson d7478d4229 common-user: Fix tail calls to safe_syscall_set_errno_tail 
For the ABIs in which the syscall return register is not
also the first function argument register, move the errno
value into the correct place.

Fixes: a3310c0397 ("linux-user: Move syscall error detection into safe_syscall_base")
Reported-by: Laurent Vivier <laurent@vivier.eu>
Tested-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220104190454.542225-1-richard.henderson@linaro.org>
 2022-01-04 15:41:03 -08:00
WANG XueruiandRichard Henderson 6016b7b46e common-user: Add safe syscall handling for loongarch64 hosts 
Signed-off-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211221054105.178795-29-git@xen0n.name>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2021-12-21 13:17:06 -08:00
Richard Henderson 5bfd125ec8 common-user: Adjust system call return on FreeBSD 
FreeBSD system calls return positive errno.  On the 4 hosts for
which we have support, error is indicated by the C bit set or clear.

Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2021-12-20 10:12:29 -08:00
Richard Henderson bbf15aaf7c common-user: Move safe-syscall.* from linux-user 
Move linux-user safe-syscall.S and safe-syscall-error.c to common-user
so that bsd-user can also use it.  Also move safe-syscall.h to
include/user/.  Since there is nothing here that is related to the guest,
as opposed to the host, build it once.

Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2021-12-20 10:12:24 -08:00