From: Max Filippov <jcmvbkbc@gmail.com>
To: qemu-devel@nongnu.org
Cc: Blue Swirl <blauwirbel@gmail.com>,
Peter Maydell <peter.maydell@linaro.org>,
Max Filippov <jcmvbkbc@gmail.com>
Subject: [Qemu-devel] [PATCH] target-xtensa: convert host errno values to guest
Date: Wed, 29 Aug 2012 23:54:25 +0400 [thread overview]
Message-ID: <1346270065-21898-1-git-send-email-jcmvbkbc@gmail.com> (raw)
Guest errno values are taken from the newlib. Convert only those errno
values that can be returned from used system calls.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
target-xtensa/xtensa-semi.c | 106 +++++++++++++++++++++++++++++++++++++++---
1 files changed, 98 insertions(+), 8 deletions(-)
diff --git a/target-xtensa/xtensa-semi.c b/target-xtensa/xtensa-semi.c
index 6d001c2..e745bef 100644
--- a/target-xtensa/xtensa-semi.c
+++ b/target-xtensa/xtensa-semi.c
@@ -54,6 +54,96 @@ enum {
SELECT_ONE_EXCEPT = 3,
};
+enum {
+ TARGET_EPERM = 1,
+ TARGET_ENOENT = 2,
+ TARGET_ESRCH = 3,
+ TARGET_EINTR = 4,
+ TARGET_EIO = 5,
+ TARGET_ENXIO = 6,
+ TARGET_E2BIG = 7,
+ TARGET_ENOEXEC = 8,
+ TARGET_EBADF = 9,
+ TARGET_ECHILD = 10,
+ TARGET_EAGAIN = 11,
+ TARGET_ENOMEM = 12,
+ TARGET_EACCES = 13,
+ TARGET_EFAULT = 14,
+ TARGET_ENOTBLK = 15,
+ TARGET_EBUSY = 16,
+ TARGET_EEXIST = 17,
+ TARGET_EXDEV = 18,
+ TARGET_ENODEV = 19,
+ TARGET_ENOTDIR = 20,
+ TARGET_EISDIR = 21,
+ TARGET_EINVAL = 22,
+ TARGET_ENFILE = 23,
+ TARGET_EMFILE = 24,
+ TARGET_ENOTTY = 25,
+ TARGET_ETXTBSY = 26,
+ TARGET_EFBIG = 27,
+ TARGET_ENOSPC = 28,
+ TARGET_ESPIPE = 29,
+ TARGET_EROFS = 30,
+ TARGET_EMLINK = 31,
+ TARGET_EPIPE = 32,
+ TARGET_EDOM = 33,
+ TARGET_ERANGE = 34,
+ TARGET_ENOSYS = 88,
+ TARGET_ELOOP = 92,
+};
+
+static uint32_t errno_h2g(int host_errno)
+{
+ static const uint32_t guest_errno[] = {
+ [EPERM] = TARGET_EPERM,
+ [ENOENT] = TARGET_ENOENT,
+ [ESRCH] = TARGET_ESRCH,
+ [EINTR] = TARGET_EINTR,
+ [EIO] = TARGET_EIO,
+ [ENXIO] = TARGET_ENXIO,
+ [E2BIG] = TARGET_E2BIG,
+ [ENOEXEC] = TARGET_ENOEXEC,
+ [EBADF] = TARGET_EBADF,
+ [ECHILD] = TARGET_ECHILD,
+ [EAGAIN] = TARGET_EAGAIN,
+ [ENOMEM] = TARGET_ENOMEM,
+ [EACCES] = TARGET_EACCES,
+ [EFAULT] = TARGET_EFAULT,
+ [ENOTBLK] = TARGET_ENOTBLK,
+ [EBUSY] = TARGET_EBUSY,
+ [EEXIST] = TARGET_EEXIST,
+ [EXDEV] = TARGET_EXDEV,
+ [ENODEV] = TARGET_ENODEV,
+ [ENOTDIR] = TARGET_ENOTDIR,
+ [EISDIR] = TARGET_EISDIR,
+ [EINVAL] = TARGET_EINVAL,
+ [ENFILE] = TARGET_ENFILE,
+ [EMFILE] = TARGET_EMFILE,
+ [ENOTTY] = TARGET_ENOTTY,
+ [ETXTBSY] = TARGET_ETXTBSY,
+ [EFBIG] = TARGET_EFBIG,
+ [ENOSPC] = TARGET_ENOSPC,
+ [ESPIPE] = TARGET_ESPIPE,
+ [EROFS] = TARGET_EROFS,
+ [EMLINK] = TARGET_EMLINK,
+ [EPIPE] = TARGET_EPIPE,
+ [EDOM] = TARGET_EDOM,
+ [ERANGE] = TARGET_ERANGE,
+ [ENOSYS] = TARGET_ENOSYS,
+ [ELOOP] = TARGET_ELOOP,
+ };
+
+ if (host_errno == 0) {
+ return 0;
+ } else if (host_errno > 0 && host_errno < ARRAY_SIZE(guest_errno) &&
+ guest_errno[host_errno]) {
+ return guest_errno[host_errno];
+ } else {
+ return TARGET_EINVAL;
+ }
+}
+
void HELPER(simcall)(CPUXtensaState *env)
{
uint32_t *regs = env->regs;
@@ -87,14 +177,14 @@ void HELPER(simcall)(CPUXtensaState *env)
regs[2] = is_write ?
write(fd, buf, io_sz) :
read(fd, buf, io_sz);
- regs[3] = errno;
+ regs[3] = errno_h2g(errno);
cpu_physical_memory_unmap(buf, sz, is_write, sz);
if (regs[2] == -1) {
break;
}
} else {
regs[2] = -1;
- regs[3] = EINVAL;
+ regs[3] = TARGET_EINVAL;
break;
}
}
@@ -117,10 +207,10 @@ void HELPER(simcall)(CPUXtensaState *env)
if (rc == 0 && i < ARRAY_SIZE(name)) {
regs[2] = open(name, regs[4], regs[5]);
- regs[3] = errno;
+ regs[3] = errno_h2g(errno);
} else {
regs[2] = -1;
- regs[3] = EINVAL;
+ regs[3] = TARGET_EINVAL;
}
}
break;
@@ -130,13 +220,13 @@ void HELPER(simcall)(CPUXtensaState *env)
regs[2] = regs[3] = 0;
} else {
regs[2] = close(regs[3]);
- regs[3] = errno;
+ regs[3] = errno_h2g(errno);
}
break;
case TARGET_SYS_lseek:
regs[2] = lseek(regs[3], (off_t)(int32_t)regs[4], regs[5]);
- regs[3] = errno;
+ regs[3] = errno_h2g(errno);
break;
case TARGET_SYS_select_one:
@@ -163,7 +253,7 @@ void HELPER(simcall)(CPUXtensaState *env)
rq == SELECT_ONE_WRITE ? &fdset : NULL,
rq == SELECT_ONE_EXCEPT ? &fdset : NULL,
target_tv ? &tv : NULL);
- regs[3] = errno;
+ regs[3] = errno_h2g(errno);
}
break;
@@ -219,7 +309,7 @@ void HELPER(simcall)(CPUXtensaState *env)
default:
qemu_log("%s(%d): not implemented\n", __func__, regs[2]);
regs[2] = -1;
- regs[3] = ENOSYS;
+ regs[3] = TARGET_ENOSYS;
break;
}
}
--
1.7.7.6
next reply other threads:[~2012-08-29 19:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-29 19:54 Max Filippov [this message]
2012-09-05 19:47 ` [Qemu-devel] [PATCH] target-xtensa: convert host errno values to guest Blue Swirl
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