diff options
Diffstat (limited to 'semihosting')
| -rw-r--r-- | semihosting/arm-compat-semi.c | 40 | ||||
| -rw-r--r-- | semihosting/syscalls.c | 36 |
2 files changed, 50 insertions, 26 deletions
diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c index a117d180bc..3cdc2b6efc 100644 --- a/semihosting/arm-compat-semi.c +++ b/semihosting/arm-compat-semi.c @@ -248,6 +248,19 @@ static void common_semi_rw_cb(CPUState *cs, target_ulong ret, target_ulong err) } /* + * Convert from Posix ret+errno to Arm SYS_ISTTY return values. + * With gdbstub, err is only ever set for protocol errors to EIO. + */ +static void common_semi_istty_cb(CPUState *cs, target_ulong ret, + target_ulong err) +{ + if (err) { + ret = (err == ENOTTY ? 0 : -1); + } + common_semi_cb(cs, ret, err); +} + +/* * SYS_SEEK returns 0 on success, not the resulting offset. */ static void common_semi_seek_cb(CPUState *cs, target_ulong ret, @@ -291,14 +304,8 @@ common_semi_flen_cb(CPUState *cs, target_ulong ret, target_ulong err) * do the work and return the required return value to the guest * via common_semi_cb. */ -typedef void sys_isattyfn(CPUState *cs, GuestFD *gf); typedef void sys_flenfn(CPUState *cs, GuestFD *gf); -static void host_isattyfn(CPUState *cs, GuestFD *gf) -{ - common_semi_cb(cs, isatty(gf->hostfd), 0); -} - static void host_flenfn(CPUState *cs, GuestFD *gf) { struct stat buf; @@ -310,11 +317,6 @@ static void host_flenfn(CPUState *cs, GuestFD *gf) } } -static void gdb_isattyfn(CPUState *cs, GuestFD *gf) -{ - gdb_do_syscall(common_semi_cb, "isatty,%x", gf->hostfd); -} - static void gdb_flenfn(CPUState *cs, GuestFD *gf) { gdb_do_syscall(common_semi_flen_cb, "fstat,%x,%x", @@ -338,32 +340,23 @@ static const uint8_t featurefile_data[] = { SH_EXT_EXIT_EXTENDED | SH_EXT_STDOUT_STDERR, /* Feature byte 0 */ }; -static void staticfile_isattyfn(CPUState *cs, GuestFD *gf) -{ - common_semi_cb(cs, 0, 0); -} - static void staticfile_flenfn(CPUState *cs, GuestFD *gf) { common_semi_cb(cs, gf->staticfile.len, 0); } typedef struct GuestFDFunctions { - sys_isattyfn *isattyfn; sys_flenfn *flenfn; } GuestFDFunctions; static const GuestFDFunctions guestfd_fns[] = { [GuestFDHost] = { - .isattyfn = host_isattyfn, .flenfn = host_flenfn, }, [GuestFDGDB] = { - .isattyfn = gdb_isattyfn, .flenfn = gdb_flenfn, }, [GuestFDStatic] = { - .isattyfn = staticfile_isattyfn, .flenfn = staticfile_flenfn, }, }; @@ -489,12 +482,7 @@ void do_common_semihosting(CPUState *cs) case TARGET_SYS_ISTTY: GET_ARG(0); - - gf = get_guestfd(arg0); - if (!gf) { - goto do_badf; - } - guestfd_fns[gf->type].isattyfn(cs, gf); + semihost_sys_isatty(cs, common_semi_istty_cb, arg0); break; case TARGET_SYS_SEEK: diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c index 9e3eb464b5..1f1baf7e2d 100644 --- a/semihosting/syscalls.c +++ b/semihosting/syscalls.c @@ -121,6 +121,12 @@ static void gdb_lseek(CPUState *cs, gdb_syscall_complete_cb complete, (target_ulong)gf->hostfd, off, (target_ulong)gdb_whence); } +static void gdb_isatty(CPUState *cs, gdb_syscall_complete_cb complete, + GuestFD *gf) +{ + gdb_do_syscall(complete, "isatty,%x", (target_ulong)gf->hostfd); +} + /* * Host semihosting syscall implementations. */ @@ -246,6 +252,13 @@ static void host_lseek(CPUState *cs, gdb_syscall_complete_cb complete, complete(cs, ret, err); } +static void host_isatty(CPUState *cs, gdb_syscall_complete_cb complete, + GuestFD *gf) +{ + int ret = isatty(gf->hostfd); + complete(cs, ret, ret ? 0 : errno); +} + /* * Static file semihosting syscall implementations. */ @@ -437,3 +450,26 @@ void semihost_sys_lseek(CPUState *cs, gdb_syscall_complete_cb complete, g_assert_not_reached(); } } + +void semihost_sys_isatty(CPUState *cs, gdb_syscall_complete_cb complete, int fd) +{ + GuestFD *gf = get_guestfd(fd); + + if (!gf) { + complete(cs, 0, EBADF); + return; + } + switch (gf->type) { + case GuestFDGDB: + gdb_isatty(cs, complete, gf); + break; + case GuestFDHost: + host_isatty(cs, complete, gf); + break; + case GuestFDStatic: + complete(cs, 0, ENOTTY); + break; + default: + g_assert_not_reached(); + } +} |