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xtensa: ISS: add argc/argv simcall definitions 

There are three simcalls implemented by ISS and QEMU related to
argc/argv processing: SYS_iss_argc (get number of command line
arguments), SYS_iss_argv_size (get size of command line argument block)
and SYS_iss_set_argv (copy command line arguments to virtual guest
address).
Add definitions for these calls to iss/include/platform/simcall.h

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2017-03-13 10:23:02 -07:00
parent 3ced97305d
commit e8cd8da934
1 changed files with 20 additions and 0 deletions
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20
arch/xtensa/platforms/iss/include/platform/simcall.h
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@ -6,6 +6,7 @@
* for more details.
*
* Copyright (C) 2001 Tensilica Inc.
* Copyright (C) 2017 Cadence Design Systems Inc.
*/
#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_H
@ -49,6 +50,10 @@
#define SYS_bind 30
#define SYS_ioctl 31
#define SYS_iss_argc 1000 /* returns value of argc */
#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
/*
* SYS_select_one specifiers
*/
@ -118,5 +123,20 @@ static inline int simc_lseek(int fd, uint32_t off, int whence)
return __simc(SYS_lseek, fd, off, whence);
}
static inline int simc_argc(void)
{
return __simc(SYS_iss_argc, 0, 0, 0);
}
static inline int simc_argv_size(void)
{
return __simc(SYS_iss_argv_size, 0, 0, 0);
}
static inline void simc_argv(void *buf)
{
__simc(SYS_iss_set_argv, (int)buf, 0, 0);
}
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */