diff options
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 746967a1f4..1a5e38184b 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -995,7 +995,8 @@ static abi_long do_pipe2(int host_pipe[], int flags) #endif } -static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, int flags) +static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, + int flags, int is_pipe2) { int host_pipe[2]; abi_long ret; @@ -1003,20 +1004,25 @@ static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, int flags) if (is_error(ret)) return get_errno(ret); -#if defined(TARGET_MIPS) - ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1]; - ret = host_pipe[0]; -#else -#if defined(TARGET_SH4) - if (!flags) { + + /* Several targets have special calling conventions for the original + pipe syscall, but didn't replicate this into the pipe2 syscall. */ + if (!is_pipe2) { +#if defined(TARGET_ALPHA) + ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1]; + return host_pipe[0]; +#elif defined(TARGET_MIPS) + ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1]; + return host_pipe[0]; +#elif defined(TARGET_SH4) ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1]; - ret = host_pipe[0]; - } else + return host_pipe[0]; #endif + } + if (put_user_s32(host_pipe[0], pipedes) || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0]))) return -TARGET_EFAULT; -#endif return get_errno(ret); } @@ -4706,11 +4712,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = get_errno(dup(arg1)); break; case TARGET_NR_pipe: - ret = do_pipe(cpu_env, arg1, 0); + ret = do_pipe(cpu_env, arg1, 0, 0); break; #ifdef TARGET_NR_pipe2 case TARGET_NR_pipe2: - ret = do_pipe(cpu_env, arg1, arg2); + ret = do_pipe(cpu_env, arg1, arg2, 1); break; #endif case TARGET_NR_times: |