diff options
Diffstat (limited to 'linux-user/arm/semihost.c')
| -rw-r--r-- | linux-user/arm/semihost.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/linux-user/arm/semihost.c b/linux-user/arm/semihost.c index 9554102a85..a16b525eec 100644 --- a/linux-user/arm/semihost.c +++ b/linux-user/arm/semihost.c @@ -15,10 +15,35 @@ #include "hw/semihosting/console.h" #include "qemu.h" -int qemu_semihosting_console_out(CPUArchState *env, target_ulong addr, int len) +int qemu_semihosting_console_outs(CPUArchState *env, target_ulong addr) { - void *s = lock_user_string(addr); - len = write(STDERR_FILENO, s, len ? len : strlen(s)); + int len = target_strlen(addr); + void *s; + if (len < 0){ + qemu_log_mask(LOG_GUEST_ERROR, + "%s: passed inaccessible address " TARGET_FMT_lx, + __func__, addr); + return 0; + } + s = lock_user(VERIFY_READ, addr, (long)(len + 1), 1); + g_assert(s); /* target_strlen has already verified this will work */ + len = write(STDERR_FILENO, s, len); unlock_user(s, addr, 0); return len; } + +void qemu_semihosting_console_outc(CPUArchState *env, target_ulong addr) +{ + char c; + + if (get_user_u8(c, addr)) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: passed inaccessible address " TARGET_FMT_lx, + __func__, addr); + } else { + if (write(STDERR_FILENO, &c, 1) != 1) { + qemu_log_mask(LOG_UNIMP, "%s: unexpected write to stdout failure", + __func__); + } + } +} |