42aeb20e68
Update to v5.0.0 OBS-URL: https://build.opensuse.org/request/show/798748 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=547
80 lines
3.6 KiB
Diff
80 lines
3.6 KiB
Diff
From: Alexander Graf <agraf@suse.de>
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Date: Tue, 9 Oct 2012 09:06:49 +0200
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Subject: linux-user: use target_ulong
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Linux syscalls pass pointers or data length or other information of that sort
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to the kernel. This is all stuff you don't want to have sign extended.
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Otherwise a host 64bit variable parameter with a size parameter will extend
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it to a negative number, breaking lseek for example.
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Pass syscall arguments as ulong always.
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Signed-off-by: Alexander Graf <agraf@suse.de>
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---
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linux-user/qemu.h | 8 ++++----
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linux-user/syscall.c | 18 +++++++++---------
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2 files changed, 13 insertions(+), 13 deletions(-)
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diff --git a/linux-user/qemu.h b/linux-user/qemu.h
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index 792c74290f8d376235b07f3f8ef0..956ad6db3df11684132402dd877b 100644
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--- a/linux-user/qemu.h
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+++ b/linux-user/qemu.h
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@@ -207,10 +207,10 @@ abi_long memcpy_to_target(abi_ulong dest, const void *src,
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void target_set_brk(abi_ulong new_brk);
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abi_long do_brk(abi_ulong new_brk);
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void syscall_init(void);
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-abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
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- abi_long arg2, abi_long arg3, abi_long arg4,
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- abi_long arg5, abi_long arg6, abi_long arg7,
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- abi_long arg8);
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+abi_long do_syscall(void *cpu_env, int num, abi_ulong arg1,
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+ abi_ulong arg2, abi_ulong arg3, abi_ulong arg4,
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+ abi_ulong arg5, abi_ulong arg6, abi_ulong arg7,
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+ abi_ulong arg8);
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extern __thread CPUState *thread_cpu;
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void cpu_loop(CPUArchState *env);
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const char *target_strerror(int err);
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diff --git a/linux-user/syscall.c b/linux-user/syscall.c
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index 39b824760a29765dc9538d8574e5..0317c64f4ae460c972fe4fe67ef8 100644
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--- a/linux-user/syscall.c
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+++ b/linux-user/syscall.c
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@@ -7650,10 +7650,10 @@ static int host_to_target_cpu_mask(const unsigned long *host_mask,
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* of syscall results, can be performed.
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* All errnos that do_syscall() returns must be -TARGET_<errcode>.
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*/
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-static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
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- abi_long arg2, abi_long arg3, abi_long arg4,
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- abi_long arg5, abi_long arg6, abi_long arg7,
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- abi_long arg8)
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+static abi_long do_syscall1(void *cpu_env, int num, abi_ulong arg1,
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+ abi_ulong arg2, abi_ulong arg3, abi_ulong arg4,
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+ abi_ulong arg5, abi_ulong arg6, abi_ulong arg7,
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+ abi_ulong arg8)
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{
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CPUState *cpu = env_cpu(cpu_env);
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abi_long ret;
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@@ -10423,7 +10423,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
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*/
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ret = -TARGET_EINVAL;
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if (cpu_isar_feature(aa64_sve, env_archcpu(cpu_env))
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- && arg2 >= 0 && arg2 <= 512 * 16 && !(arg2 & 15)) {
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+ && arg2 <= 512 * 16 && !(arg2 & 15)) {
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CPUARMState *env = cpu_env;
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ARMCPU *cpu = env_archcpu(env);
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uint32_t vq, old_vq;
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@@ -12456,10 +12456,10 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
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return ret;
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}
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-abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
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- abi_long arg2, abi_long arg3, abi_long arg4,
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- abi_long arg5, abi_long arg6, abi_long arg7,
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- abi_long arg8)
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+abi_long do_syscall(void *cpu_env, int num, abi_ulong arg1,
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+ abi_ulong arg2, abi_ulong arg3, abi_ulong arg4,
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+ abi_ulong arg5, abi_ulong arg6, abi_ulong arg7,
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+ abi_ulong arg8)
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{
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CPUState *cpu = env_cpu(cpu_env);
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abi_long ret;
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