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-rw-r--r--libc/sysdeps/linux/nios2/bits/fcntl.h6
-rw-r--r--libc/sysdeps/linux/nios2/bits/syscalls.h359
-rw-r--r--libc/sysdeps/linux/nios2/sys/user.h93
3 files changed, 182 insertions, 276 deletions
diff --git a/libc/sysdeps/linux/nios2/bits/fcntl.h b/libc/sysdeps/linux/nios2/bits/fcntl.h
index 7d0bcf946..e564b4217 100644
--- a/libc/sysdeps/linux/nios2/bits/fcntl.h
+++ b/libc/sysdeps/linux/nios2/bits/fcntl.h
@@ -1,5 +1,5 @@
/* O_*, F_*, FD_* bit values for Linux.
- Copyright (C) 2000 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -48,6 +48,8 @@
# define O_DIRECTORY 040000 /* Must be a directory. */
# define O_NOFOLLOW 0100000 /* Do not follow links. */
# define O_DIRECT 0200000 /* Direct disk access. */
+# define O_NOATIME 01000000 /* Do not set atime. */
+# define O_CLOEXEC 02000000 /* set close_on_exec */
#endif
/* For now Linux has synchronisity options for data and read operations.
@@ -81,7 +83,7 @@
#define F_SETLK64 13 /* Set record locking info (non-blocking). */
#define F_SETLKW64 14 /* Set record locking info (blocking). */
-#if defined __USE_BSD || defined __USE_XOPEN2K
+#if defined __USE_BSD || defined __USE_UNIX98
# define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */
# define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */
#endif
diff --git a/libc/sysdeps/linux/nios2/bits/syscalls.h b/libc/sysdeps/linux/nios2/bits/syscalls.h
index ec5370712..f80bea206 100644
--- a/libc/sysdeps/linux/nios2/bits/syscalls.h
+++ b/libc/sysdeps/linux/nios2/bits/syscalls.h
@@ -9,287 +9,98 @@
#include <errno.h>
#include <asm/traps.h>
-#define __syscall_return(type, res) \
-do { \
- if ((unsigned long)(res) >= (unsigned long)(-125)) { \
- \
- /* avoid using res which is declared to be in \
- register r2; errno might expand to a function \
- call and clobber it. */ \
- \
- int __err = -(res); \
- errno = __err; \
- res = -1; \
- } \
- return (type) (res); \
-} while (0)
+#define __syscall_return(type, res) \
+ do { \
+ if (unlikely(INTERNAL_SYSCALL_ERROR_P(res, ))) { \
+ __set_errno(INTERNAL_SYSCALL_ERRNO(res, )); \
+ res = (unsigned long) -1; \
+ } \
+ return (type) (res); \
+ } while (0)
-#define _syscall0(type,name) \
-type name(void) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+ ({ \
+ long __res; \
+ __asm__ __volatile__ ( \
+ "movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
+ "movi r3, %1\n\t" /* __NR_##name */ \
+ ASM_ARGS_##nr \
+ "trap\n\t" \
+ "mov %0, r2\n\t" /* syscall return */ \
+ : "=r" (__res) /* %0 */ \
+ : "i" (name) /* %1 */ \
+ , "i" (TRAP_ID_SYSCALL) /* %2 */ \
+ MAP_ARGS_##nr (args) /* %3-%8 */ \
+ : "r2" \
+ , "r3" \
+ CLOB_ARGS_##nr /* Clobbered */ \
+ ); \
+ __res; \
+ })
-#define _syscall1(type,name,atype,a) \
-type name(atype a) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned long)(val) >= (unsigned long)(-125))
-#define _syscall2(type,name,atype,a,btype,b) \
-type name(atype a,btype b) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_0
+#define MAP_ARGS_0()
+#define CLOB_ARGS_0
-#define _syscall3(type,name,atype,a,btype,b,ctype,c) \
-type name(atype a,btype b,ctype c) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- " mov r6, %5\n\t" /* (long) c */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- , "r" ((long) c) /* %5 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- , "r6" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_1 \
+ "mov r4, %3\n\t"
+#define MAP_ARGS_1(a) \
+ , "r" ((long) a)
+#define CLOB_ARGS_1 \
+ , "r4"
-#define _syscall4(type,name,atype,a,btype,b,ctype,c,dtype,d) \
-type name (atype a, btype b, ctype c, dtype d) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- " mov r6, %5\n\t" /* (long) c */ \
- " mov r7, %6\n\t" /* (long) d */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- , "r" ((long) c) /* %5 */ \
- , "r" ((long) d) /* %6 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- , "r6" /* Clobbered */ \
- , "r7" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_2 \
+ ASM_ARGS_1 \
+ "mov r5, %4\n\t"
+#define MAP_ARGS_2(a, b) \
+ MAP_ARGS_1(a) \
+ , "r" ((long) b)
+#define CLOB_ARGS_2 \
+ CLOB_ARGS_1 \
+ , "r5"
-#define _syscall5(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e) \
-type name (atype a,btype b,ctype c,dtype d,etype e) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- " mov r6, %5\n\t" /* (long) c */ \
- " mov r7, %6\n\t" /* (long) c */ \
- " mov r8, %7\n\t" /* (long) e */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- , "r" ((long) c) /* %5 */ \
- , "r" ((long) d) /* %6 */ \
- , "r" ((long) e) /* %7 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- , "r6" /* Clobbered */ \
- , "r7" /* Clobbered */ \
- , "r8" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_3 \
+ ASM_ARGS_2 \
+ "mov r6, %5\n\t"
+#define MAP_ARGS_3(a, b, c) \
+ MAP_ARGS_2(a, b) \
+ , "r" ((long) c)
+#define CLOB_ARGS_3 \
+ CLOB_ARGS_2 \
+ , "r6"
-#define _syscall6(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e,ftype,f) \
-type name (atype a,btype b,ctype c,dtype d,etype e,ftype f) \
-{ \
- long __res; \
- \
- __asm__ __volatile__ ( \
- \
- " \n\t" \
- \
- " movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
- " movi r3, %1\n\t" /* __NR_##name */ \
- " mov r4, %3\n\t" /* (long) a */ \
- " mov r5, %4\n\t" /* (long) b */ \
- " mov r6, %5\n\t" /* (long) c */ \
- " mov r7, %6\n\t" /* (long) c */ \
- " mov r8, %7\n\t" /* (long) e */ \
- " mov r9, %8\n\t" /* (long) f */ \
- \
- " trap\n\t" \
- " mov %0, r2\n\t" /* syscall rtn */ \
- \
- " \n\t" \
- \
- : "=r" (__res) /* %0 */ \
- \
- : "i" (__NR_##name) /* %1 */ \
- , "i" (TRAP_ID_SYSCALL) /* %2 */ \
- , "r" ((long) a) /* %3 */ \
- , "r" ((long) b) /* %4 */ \
- , "r" ((long) c) /* %5 */ \
- , "r" ((long) d) /* %6 */ \
- , "r" ((long) e) /* %7 */ \
- , "r" ((long) f) /* %8 */ \
- \
- : "r2" /* Clobbered */ \
- , "r3" /* Clobbered */ \
- , "r4" /* Clobbered */ \
- , "r5" /* Clobbered */ \
- , "r6" /* Clobbered */ \
- , "r7" /* Clobbered */ \
- , "r8" /* Clobbered */ \
- , "r9" /* Clobbered */ \
- ); \
- \
-__syscall_return(type,__res); \
-}
+#define ASM_ARGS_4 \
+ ASM_ARGS_3 \
+ "mov r7, %6\n\t"
+#define MAP_ARGS_4(a, b, c, d) \
+ MAP_ARGS_3(a, b, c) \
+ , "r" ((long) d)
+#define CLOB_ARGS_4 \
+ CLOB_ARGS_3 \
+ , "r7"
+
+#define ASM_ARGS_5 \
+ ASM_ARGS_4 \
+ "mov r8, %7\n\t"
+#define MAP_ARGS_5(a, b, c, d, e) \
+ MAP_ARGS_4(a, b, c, d) \
+ , "r" ((long) e)
+#define CLOB_ARGS_5 \
+ CLOB_ARGS_4 \
+ , "r8"
+
+#define ASM_ARGS_6 \
+ ASM_ARGS_5 \
+ "mov r9, %8\n\t"
+#define MAP_ARGS_6(a, b, c, d, e, f) \
+ MAP_ARGS_5(a, b, c, d, e) \
+ , "r" ((long) f)
+#define CLOB_ARGS_6 \
+ CLOB_ARGS_5 \
+ , "r9"
#endif /* __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */
-
diff --git a/libc/sysdeps/linux/nios2/sys/user.h b/libc/sysdeps/linux/nios2/sys/user.h
new file mode 100644
index 000000000..b34e93e97
--- /dev/null
+++ b/libc/sysdeps/linux/nios2/sys/user.h
@@ -0,0 +1,93 @@
+#ifndef _SYS_USER_H
+#define _SYS_USER_H 1
+
+/*
+ This file was taken from the nios2 port of the Linux Kernel.
+
+ Copyright (c) 2008 Atle Nissestad <atle@nissestad.no>
+ Copyright (c) 2010 Tobias Klauser <tklauser@distanz.ch>
+
+ This file is licensed under the terms of the GNU General Public License,
+ Version 2.
+ */
+
+#include <bits/uClibc_page.h>
+
+/* Core file format: The core file is written in such a way that gdb
+ can understand it and provide useful information to the user (under
+ linux we use the 'trad-core' bfd). There are quite a number of
+ obstacles to being able to view the contents of the floating point
+ registers, and until these are solved you will not be able to view the
+ contents of them. Actually, you can read in the core file and look at
+ the contents of the user struct to find out what the floating point
+ registers contain.
+ The actual file contents are as follows:
+ UPAGE: 1 page consisting of a user struct that tells gdb what is present
+ in the file. Directly after this is a copy of the task_struct, which
+ is currently not used by gdb, but it may come in useful at some point.
+ All of the registers are stored as part of the upage. The upage should
+ always be only one page.
+ DATA: The data area is stored. We use current->end_text to
+ current->brk to pick up all of the user variables, plus any memory
+ that may have been malloced. No attempt is made to determine if a page
+ is demand-zero or if a page is totally unused, we just cover the entire
+ range. All of the addresses are rounded in such a way that an integral
+ number of pages is written.
+ STACK: We need the stack information in order to get a meaningful
+ backtrace. We need to write the data from (esp) to
+ current->start_stack, so we round each of these off in order to be able
+ to write an integer number of pages.
+ The minimum core file size is 3 pages, or 12288 bytes.
+*/
+
+struct user_nios2fp_struct {
+};
+
+/* This is the old layout of "struct pt_regs" as of Linux 1.x, and
+ is still the layout used by user (the new pt_regs doesn't have
+ all registers). */
+struct user_regs_struct {
+ long r1,r2,r3,r4,r5,r6,r7,r8;
+ long r9,r10,r11,r12,r13,r14,r15;
+ long r16,r17,r18,r19,r20,r21,r22,r23;
+ long gp;
+ long sp;
+ long ra;
+ long fp;
+ long orig_r2;
+ long estatus;
+ long status_extension;
+ long ea;
+};
+
+/* When the kernel dumps core, it starts by dumping the user struct -
+ this will be used by gdb to figure out where the data and stack segments
+ are within the file, and what virtual addresses to use. */
+struct user {
+/* We start with the registers, to mimic the way that "memory" is returned
+ from the ptrace(3,...) function. */
+ struct user_regs_struct regs; /* Where the registers are actually stored */
+
+/* The rest of this junk is to help gdb figure out what goes where */
+ unsigned long int u_tsize; /* Text segment size (pages). */
+ unsigned long int u_dsize; /* Data segment size (pages). */
+ unsigned long int u_ssize; /* Stack segment size (pages). */
+ unsigned long start_code; /* Starting virtual address of text. */
+ unsigned long start_stack; /* Starting virtual address of stack area.
+ This is actually the bottom of the stack,
+ the top of the stack is always found in the
+ esp register. */
+ long int signal; /* Signal that caused the core dump. */
+ int reserved; /* No longer used */
+ unsigned long u_ar0; /* Used by gdb to help find the values for */
+ /* the registers. */
+ unsigned long magic; /* To uniquely identify a core file */
+ char u_comm[32]; /* User command that was responsible */
+};
+
+#define NBPG PAGE_SIZE
+#define UPAGES 1
+#define HOST_TEXT_START_ADDR (u.start_code)
+#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
+
+#endif
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