target/xtensa: add linux-user support
Import list of syscalls from the kernel source. Conditionalize code/data
that is only used with softmmu. Implement exception handlers. Implement
signal hander (only the core registers for now, no coprocessors or TIE).
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index e00e1b3..b034fa8 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -71,7 +71,8 @@
|| defined(TARGET_M68K) || defined(TARGET_CRIS) \
|| defined(TARGET_UNICORE32) || defined(TARGET_S390X) \
|| defined(TARGET_OPENRISC) || defined(TARGET_TILEGX) \
- || defined(TARGET_NIOS2) || defined(TARGET_RISCV)
+ || defined(TARGET_NIOS2) || defined(TARGET_RISCV) \
+ || defined(TARGET_XTENSA)
#define TARGET_IOC_SIZEBITS 14
#define TARGET_IOC_DIRBITS 2
@@ -436,7 +437,7 @@
|| defined(TARGET_MICROBLAZE) || defined(TARGET_UNICORE32) \
|| defined(TARGET_S390X) || defined(TARGET_OPENRISC) \
|| defined(TARGET_TILEGX) || defined(TARGET_HPPA) || defined(TARGET_NIOS2) \
- || defined(TARGET_RISCV)
+ || defined(TARGET_RISCV) || defined(TARGET_XTENSA)
#if defined(TARGET_SPARC)
#define TARGET_SA_NOCLDSTOP 8u
@@ -1392,6 +1393,18 @@
#define TARGET_MAP_NONBLOCK 0x20000 /* do not block on IO */
#define TARGET_MAP_STACK 0x40000 /* ignored */
#define TARGET_MAP_HUGETLB 0x80000 /* create a huge page mapping */
+#elif defined(TARGET_XTENSA)
+#define TARGET_MAP_FIXED 0x10 /* Interpret addr exactly */
+#define TARGET_MAP_ANONYMOUS 0x0800 /* don't use a file */
+#define TARGET_MAP_GROWSDOWN 0x1000 /* stack-like segment */
+#define TARGET_MAP_DENYWRITE 0x2000 /* ETXTBSY */
+#define TARGET_MAP_EXECUTABLE 0x4000 /* mark it as an executable */
+#define TARGET_MAP_LOCKED 0x8000 /* pages are locked */
+#define TARGET_MAP_NORESERVE 0x0400 /* don't check for reservations */
+#define TARGET_MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
+#define TARGET_MAP_NONBLOCK 0x20000 /* do not block on IO */
+#define TARGET_MAP_STACK 0x40000
+#define TARGET_MAP_HUGETLB 0x80000 /* create a huge page mapping */
#else
#define TARGET_MAP_FIXED 0x10 /* Interpret addr exactly */
#define TARGET_MAP_ANONYMOUS 0x20 /* don't use a file */
@@ -2093,6 +2106,51 @@
abi_ulong target_st_ctime_nsec;
unsigned int __unused[2];
};
+#elif defined(TARGET_XTENSA)
+struct target_stat {
+ abi_ulong st_dev;
+ abi_ulong st_ino;
+ unsigned int st_mode;
+ unsigned int st_nlink;
+ unsigned int st_uid;
+ unsigned int st_gid;
+ abi_ulong st_rdev;
+ abi_long st_size;
+ abi_ulong st_blksize;
+ abi_ulong st_blocks;
+ abi_ulong target_st_atime;
+ abi_ulong target_st_atime_nsec;
+ abi_ulong target_st_mtime;
+ abi_ulong target_st_mtime_nsec;
+ abi_ulong target_st_ctime;
+ abi_ulong target_st_ctime_nsec;
+ abi_ulong __unused4;
+ abi_ulong __unused5;
+};
+
+#define TARGET_HAS_STRUCT_STAT64
+struct target_stat64 {
+ uint64_t st_dev; /* Device */
+ uint64_t st_ino; /* File serial number */
+ unsigned int st_mode; /* File mode. */
+ unsigned int st_nlink; /* Link count. */
+ unsigned int st_uid; /* User ID of the file's owner. */
+ unsigned int st_gid; /* Group ID of the file's group. */
+ uint64_t st_rdev; /* Device number, if device. */
+ int64_t st_size; /* Size of file, in bytes. */
+ abi_ulong st_blksize; /* Optimal block size for I/O. */
+ abi_ulong __unused2;
+ uint64_t st_blocks; /* Number 512-byte blocks allocated. */
+ abi_ulong target_st_atime; /* Time of last access. */
+ abi_ulong target_st_atime_nsec;
+ abi_ulong target_st_mtime; /* Time of last modification. */
+ abi_ulong target_st_mtime_nsec;
+ abi_ulong target_st_ctime; /* Time of last status change. */
+ abi_ulong target_st_ctime_nsec;
+ abi_ulong __unused4;
+ abi_ulong __unused5;
+};
+
#elif defined(TARGET_OPENRISC) || defined(TARGET_TILEGX) || \
defined(TARGET_NIOS2) || defined(TARGET_RISCV)
@@ -2593,7 +2651,8 @@
short l_whence;
#if defined(TARGET_PPC) || defined(TARGET_X86_64) || defined(TARGET_MIPS) \
|| defined(TARGET_SPARC) || defined(TARGET_HPPA) \
- || defined(TARGET_MICROBLAZE) || defined(TARGET_TILEGX)
+ || defined(TARGET_MICROBLAZE) || defined(TARGET_TILEGX) \
+ || defined(TARGET_XTENSA)
int __pad;
#endif
abi_llong l_start;
