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target-xtensa: convert host errno values to guest

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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>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Max Filippov 2012-08-29 23:54:25 +04:00 committed by Blue Swirl
parent dfe7053a34
commit d6ce52c1f1
1 changed files with 98 additions and 8 deletions
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106
target-xtensa/xtensa-semi.c
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@ -54,6 +54,96 @@ enum {
SELECT_ONE_EXCEPT = 3, 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) void HELPER(simcall)(CPUXtensaState *env)
{ {
uint32_t *regs = env->regs; uint32_t *regs = env->regs;
@ -87,14 +177,14 @@ void HELPER(simcall)(CPUXtensaState *env)
regs[2] = is_write ? regs[2] = is_write ?
write(fd, buf, io_sz) : write(fd, buf, io_sz) :
read(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); cpu_physical_memory_unmap(buf, sz, is_write, sz);
if (regs[2] == -1) { if (regs[2] == -1) {
break; break;
} }
} else { } else {
regs[2] = -1; regs[2] = -1;
regs[3] = EINVAL; regs[3] = TARGET_EINVAL;
break; break;
} }
} }
@ -117,10 +207,10 @@ void HELPER(simcall)(CPUXtensaState *env)
if (rc == 0 && i < ARRAY_SIZE(name)) { if (rc == 0 && i < ARRAY_SIZE(name)) {
regs[2] = open(name, regs[4], regs[5]); regs[2] = open(name, regs[4], regs[5]);
regs[3] = errno; regs[3] = errno_h2g(errno);
} else { } else {
regs[2] = -1; regs[2] = -1;
regs[3] = EINVAL; regs[3] = TARGET_EINVAL;
} }
} }
break; break;
@ -130,13 +220,13 @@ void HELPER(simcall)(CPUXtensaState *env)
regs[2] = regs[3] = 0; regs[2] = regs[3] = 0;
} else { } else {
regs[2] = close(regs[3]); regs[2] = close(regs[3]);
regs[3] = errno; regs[3] = errno_h2g(errno);
} }
break; break;
case TARGET_SYS_lseek: case TARGET_SYS_lseek:
regs[2] = lseek(regs[3], (off_t)(int32_t)regs[4], regs[5]); regs[2] = lseek(regs[3], (off_t)(int32_t)regs[4], regs[5]);
regs[3] = errno; regs[3] = errno_h2g(errno);
break; break;
case TARGET_SYS_select_one: case TARGET_SYS_select_one:
@ -163,7 +253,7 @@ void HELPER(simcall)(CPUXtensaState *env)
rq == SELECT_ONE_WRITE ? &fdset : NULL, rq == SELECT_ONE_WRITE ? &fdset : NULL,
rq == SELECT_ONE_EXCEPT ? &fdset : NULL, rq == SELECT_ONE_EXCEPT ? &fdset : NULL,
target_tv ? &tv : NULL); target_tv ? &tv : NULL);
regs[3] = errno; regs[3] = errno_h2g(errno);
} }
break; break;
@ -219,7 +309,7 @@ void HELPER(simcall)(CPUXtensaState *env)
default: default:
qemu_log("%s(%d): not implemented\n", __func__, regs[2]); qemu_log("%s(%d): not implemented\n", __func__, regs[2]);
regs[2] = -1; regs[2] = -1;
regs[3] = ENOSYS; regs[3] = TARGET_ENOSYS;
break; break;
} }
} }