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-rw-r--r--libc/sysdeps/linux/m68k/bits/fenv.h98
-rw-r--r--libc/sysdeps/linux/m68k/bits/shm.h108
-rw-r--r--libc/sysdeps/linux/m68k/bsd-_setjmp.S4
-rw-r--r--libc/sysdeps/linux/m68k/bsd-setjmp.S4
-rw-r--r--libc/sysdeps/linux/m68k/fpu_control.h77
-rw-r--r--libc/sysdeps/linux/m68k/setjmp.S4
6 files changed, 237 insertions, 58 deletions
diff --git a/libc/sysdeps/linux/m68k/bits/fenv.h b/libc/sysdeps/linux/m68k/bits/fenv.h
index b07f0ab51..37c5fe829 100644
--- a/libc/sysdeps/linux/m68k/bits/fenv.h
+++ b/libc/sysdeps/linux/m68k/bits/fenv.h
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
+/* Copyright (C) 1997-2025 Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -12,31 +11,38 @@
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
#ifndef _FENV_H
# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
#endif
+#if defined __HAVE_68881__ || defined __HAVE_FPU__ || defined __mcffpu__
+
/* Define bits representing the exception. We use the bit positions of
the appropriate bits in the FPSR Accrued Exception Byte. */
enum
{
- FE_INEXACT = 1 << 3,
-#define FE_INEXACT FE_INEXACT
- FE_DIVBYZERO = 1 << 4,
-#define FE_DIVBYZERO FE_DIVBYZERO
- FE_UNDERFLOW = 1 << 5,
-#define FE_UNDERFLOW FE_UNDERFLOW
- FE_OVERFLOW = 1 << 6,
-#define FE_OVERFLOW FE_OVERFLOW
- FE_INVALID = 1 << 7
-#define FE_INVALID FE_INVALID
+ FE_INEXACT =
+# define FE_INEXACT (1 << 3)
+ FE_INEXACT,
+ FE_DIVBYZERO =
+# define FE_DIVBYZERO (1 << 4)
+ FE_DIVBYZERO,
+ FE_UNDERFLOW =
+# define FE_UNDERFLOW (1 << 5)
+ FE_UNDERFLOW,
+ FE_OVERFLOW =
+# define FE_OVERFLOW (1 << 6)
+ FE_OVERFLOW,
+ FE_INVALID =
+# define FE_INVALID (1 << 7)
+ FE_INVALID
};
-#define FE_ALL_EXCEPT \
+# define FE_ALL_EXCEPT \
(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
/* The m68k FPU supports all of the four defined rounding modes. We use
@@ -44,21 +50,45 @@ enum
appropriate macros. */
enum
{
- FE_TONEAREST = 0,
-#define FE_TONEAREST FE_TONEAREST
- FE_TOWARDZERO = 1 << 4,
-#define FE_TOWARDZERO FE_TOWARDZERO
- FE_DOWNWARD = 2 << 4,
-#define FE_DOWNWARD FE_DOWNWARD
- FE_UPWARD = 3 << 4
-#define FE_UPWARD FE_UPWARD
+ FE_TONEAREST =
+# define FE_TONEAREST 0
+ FE_TONEAREST,
+ FE_TOWARDZERO =
+# define FE_TOWARDZERO (1 << 4)
+ FE_TOWARDZERO,
+ FE_DOWNWARD =
+# define FE_DOWNWARD (2 << 4)
+ FE_DOWNWARD,
+ FE_UPWARD =
+# define FE_UPWARD (3 << 4)
+ FE_UPWARD
};
+#else
+
+/* In the soft-float case, only rounding to nearest is supported, with
+ no exceptions. */
+
+# define FE_ALL_EXCEPT 0
+
+enum
+ {
+ __FE_UNDEFINED = -1,
+
+ FE_TONEAREST =
+# define FE_TONEAREST 0
+ FE_TONEAREST
+ };
+
+#endif
+
/* Type representing exception flags. */
typedef unsigned int fexcept_t;
+#if defined __HAVE_68881__ || defined __HAVE_FPU__ || defined __mcffpu__
+
/* Type representing floating-point environment. This structure
corresponds to the layout of the block written by `fmovem'. */
typedef struct
@@ -69,10 +99,30 @@ typedef struct
}
fenv_t;
+#else
+
+/* Keep ABI compatibility with the type used in the generic
+ bits/fenv.h, formerly used for no-FPU ColdFire. */
+typedef struct
+ {
+ fexcept_t __excepts;
+ }
+fenv_t;
+
+#endif
+
/* If the default argument is used we use this value. */
#define FE_DFL_ENV ((const fenv_t *) -1)
-#ifdef __USE_GNU
+#if defined __USE_GNU && (defined __HAVE_68881__ \
+ || defined __HAVE_FPU__ \
+ || defined __mcffpu__)
/* Floating-point environment where none of the exceptions are masked. */
# define FE_NOMASK_ENV ((const fenv_t *) -2)
#endif
+
+/* Type representing floating-point control modes. */
+typedef unsigned int femode_t;
+
+/* Default floating-point control modes. */
+# define FE_DFL_MODE ((const femode_t *) -1L)
diff --git a/libc/sysdeps/linux/m68k/bits/shm.h b/libc/sysdeps/linux/m68k/bits/shm.h
new file mode 100644
index 000000000..aa1a72e54
--- /dev/null
+++ b/libc/sysdeps/linux/m68k/bits/shm.h
@@ -0,0 +1,108 @@
+/* Copyright (C) 1995,1996,1997,2000,2002,2004 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _SYS_SHM_H
+# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
+#endif
+
+#include <bits/types.h>
+
+/* Permission flag for shmget. */
+#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
+#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
+
+/* Flags for `shmat'. */
+#define SHM_RDONLY 010000 /* attach read-only else read-write */
+#define SHM_RND 020000 /* round attach address to SHMLBA */
+#define SHM_REMAP 040000 /* take-over region on attach */
+
+/* Commands for `shmctl'. */
+#define SHM_LOCK 11 /* lock segment (root only) */
+#define SHM_UNLOCK 12 /* unlock segment (root only) */
+
+__BEGIN_DECLS
+
+/* Segment low boundary address multiple. */
+#define SHMLBA (__getpagesize () << 2)
+extern int __getpagesize (void) __THROW __attribute__ ((__const__));
+
+
+/* Type to count number of attaches. */
+typedef unsigned long int shmatt_t;
+
+/* Data structure describing a set of semaphores. */
+struct shmid_ds
+ {
+ struct ipc_perm shm_perm; /* operation permission struct */
+ size_t shm_segsz; /* size of segment in bytes */
+#if defined(__UCLIBC_USE_TIME64__)
+ __time_t shm_atime;
+ __time_t shm_dtime;
+ __time_t shm_ctime;
+#else
+ __time_t shm_atime; /* time of last shmat() */
+ unsigned long int __uclibc_unused1;
+ __time_t shm_dtime; /* time of last shmdt() */
+ unsigned long int __uclibc_unused2;
+ __time_t shm_ctime; /* time of last change by shmctl() */
+ unsigned long int __uclibc_unused3;
+#endif
+ __pid_t shm_cpid; /* pid of creator */
+ __pid_t shm_lpid; /* pid of last shmop */
+ shmatt_t shm_nattch; /* number of current attaches */
+ unsigned long int __uclibc_unused4;
+ unsigned long int __uclibc_unused5;
+ };
+
+#ifdef __USE_MISC
+
+/* ipcs ctl commands */
+# define SHM_STAT 13
+# define SHM_INFO 14
+
+/* shm_mode upper byte flags */
+# define SHM_DEST 01000 /* segment will be destroyed on last detach */
+# define SHM_LOCKED 02000 /* segment will not be swapped */
+# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */
+# define SHM_NORESERVE 010000 /* don't check for reservations */
+
+struct shminfo
+ {
+ unsigned long int shmmax;
+ unsigned long int shmmin;
+ unsigned long int shmmni;
+ unsigned long int shmseg;
+ unsigned long int shmall;
+ unsigned long int __uclibc_unused1;
+ unsigned long int __uclibc_unused2;
+ unsigned long int __uclibc_unused3;
+ unsigned long int __uclibc_unused4;
+ };
+
+struct shm_info
+ {
+ int used_ids;
+ unsigned long int shm_tot; /* total allocated shm */
+ unsigned long int shm_rss; /* total resident shm */
+ unsigned long int shm_swp; /* total swapped shm */
+ unsigned long int swap_attempts;
+ unsigned long int swap_successes;
+ };
+
+#endif /* __USE_MISC */
+
+__END_DECLS
diff --git a/libc/sysdeps/linux/m68k/bsd-_setjmp.S b/libc/sysdeps/linux/m68k/bsd-_setjmp.S
index c963cccf5..eaabce8ed 100644
--- a/libc/sysdeps/linux/m68k/bsd-_setjmp.S
+++ b/libc/sysdeps/linux/m68k/bsd-_setjmp.S
@@ -13,7 +13,9 @@ _setjmp:
moveal %sp@(4), %a0
movel %sp@(0), %a0@(JB_PC)
moveml %d2-%d7/%a2-%a7, %a0@(JB_REGS)
-#if defined __HAVE_68881__ || defined __UCLIBC_HAS_FPU__
+#if defined(__mcffpu__) && defined(__UCLIBC_HAS_FPU__)
+ fmovemd %fp2-%fp7, %a0@(JB_FPREGS)
+#elif defined(__HAVE_68881__)
fmovemx %fp2-%fp7, %a0@(JB_FPREGS)
#endif
clrl %d0
diff --git a/libc/sysdeps/linux/m68k/bsd-setjmp.S b/libc/sysdeps/linux/m68k/bsd-setjmp.S
index 9daf27713..7d76d192b 100644
--- a/libc/sysdeps/linux/m68k/bsd-setjmp.S
+++ b/libc/sysdeps/linux/m68k/bsd-setjmp.S
@@ -14,7 +14,9 @@ setjmp:
moveal %sp@(4), %a0
movel %sp@(0), %a0@(JB_PC)
moveml %d2-%d7/%a2-%a7, %a0@(JB_REGS)
-#if defined __HAVE_68881__ || defined __UCLIBC_HAS_FPU__
+#if defined(__mcffpu__) && defined(__UCLIBC_HAS_FPU__)
+ fmovemd %fp2-%fp7, %a0@(JB_FPREGS)
+#elif defined(__HAVE_68881__)
fmovemx %fp2-%fp7, %a0@(JB_FPREGS)
#endif
clrl %d0
diff --git a/libc/sysdeps/linux/m68k/fpu_control.h b/libc/sysdeps/linux/m68k/fpu_control.h
index 35ad95e6d..c3a9c6326 100644
--- a/libc/sysdeps/linux/m68k/fpu_control.h
+++ b/libc/sysdeps/linux/m68k/fpu_control.h
@@ -1,6 +1,5 @@
/* 68k FPU control word definitions.
- Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
+ Copyright (C) 1996-2025 Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -13,8 +12,8 @@
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
#ifndef _FPU_CONTROL_H
#define _FPU_CONTROL_H
@@ -29,9 +28,9 @@
* 12 -> enable trap for OVFL exception
* 11 -> enable trap for UNFL exception
* 10 -> enable trap for DZ exception
- * 9 -> enable trap for INEX2 exception
- * 8 -> enable trap for INEX1 exception
- * 7-6 -> Precision Control
+ * 9 -> enable trap for INEX2 exception (INEX on Coldfire)
+ * 8 -> enable trap for INEX1 exception (IDE on Coldfire)
+ * 7-6 -> Precision Control (only bit 6 is used on Coldfire)
* 5-4 -> Rounding Control
* 3-0 -> zero (read as 0, write as 0)
*
@@ -53,50 +52,66 @@
#include <features.h>
+#if defined (__mcoldfire__) && !defined (__mcffpu__)
+
+# define _FPU_RESERVED 0xffffffff
+# define _FPU_DEFAULT 0x00000000
+# define _FPU_GETCW(cw) ((cw) = 0)
+# define _FPU_SETCW(cw) ((void) (cw))
+
+#else
+
/* masking of interrupts */
-#define _FPU_MASK_BSUN 0x8000
-#define _FPU_MASK_SNAN 0x4000
-#define _FPU_MASK_OPERR 0x2000
-#define _FPU_MASK_OVFL 0x1000
-#define _FPU_MASK_UNFL 0x0800
-#define _FPU_MASK_DZ 0x0400
-#define _FPU_MASK_INEX1 0x0200
-#define _FPU_MASK_INEX2 0x0100
+# define _FPU_MASK_BSUN 0x8000
+# define _FPU_MASK_SNAN 0x4000
+# define _FPU_MASK_OPERR 0x2000
+# define _FPU_MASK_OVFL 0x1000
+# define _FPU_MASK_UNFL 0x0800
+# define _FPU_MASK_DZ 0x0400
+# define _FPU_MASK_INEX1 0x0200
+# define _FPU_MASK_INEX2 0x0100
/* precision control */
-#define _FPU_EXTENDED 0x00 /* RECOMMENDED */
-#define _FPU_DOUBLE 0x80
-#define _FPU_SINGLE 0x40 /* DO NOT USE */
+# ifdef __mcoldfire__
+# define _FPU_DOUBLE 0x00
+# else
+# define _FPU_EXTENDED 0x00 /* RECOMMENDED */
+# define _FPU_DOUBLE 0x80
+# endif
+# define _FPU_SINGLE 0x40 /* DO NOT USE */
/* rounding control */
-#define _FPU_RC_NEAREST 0x00 /* RECOMMENDED */
-#define _FPU_RC_ZERO 0x10
-#define _FPU_RC_DOWN 0x20
-#define _FPU_RC_UP 0x30
+# define _FPU_RC_NEAREST 0x00 /* RECOMMENDED */
+# define _FPU_RC_ZERO 0x10
+# define _FPU_RC_DOWN 0x20
+# define _FPU_RC_UP 0x30
-#define _FPU_RESERVED 0xFFFF000F /* Reserved bits in fpucr */
+# ifdef __mcoldfire__
+# define _FPU_RESERVED 0xFFFF800F
+# else
+# define _FPU_RESERVED 0xFFFF000F /* Reserved bits in fpucr */
+# endif
/* Now two recommended fpucr */
/* The fdlibm code requires no interrupts for exceptions. Don't
change the rounding mode, it would break long double I/O! */
-#define _FPU_DEFAULT 0x00000000
+# define _FPU_DEFAULT 0x00000000
/* IEEE: same as above, but exceptions. We must make it non-zero so
that __setfpucw works. This bit will be ignored. */
-#define _FPU_IEEE 0x00000001
+# define _FPU_IEEE 0x00000001
+
+/* Macros for accessing the hardware control word. */
+# define _FPU_GETCW(cw) __asm__ ("fmove%.l %!, %0" : "=dm" (cw))
+# define _FPU_SETCW(cw) __asm__ volatile ("fmove%.l %0, %!" : : "dm" (cw))
+#endif
/* Type of the control word. */
typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__)));
-/* Macros for accessing the hardware control word. */
-#define _FPU_GETCW(cw) __asm__ ("fmove%.l %!, %0" : "=dm" (cw))
-#define _FPU_SETCW(cw) __asm__ __volatile__ ("fmove%.l %0, %!" : : "dm" (cw))
-
-#if 0
/* Default control word set at startup. */
extern fpu_control_t __fpu_control;
-#endif
#endif /* _M68K_FPU_CONTROL_H */
diff --git a/libc/sysdeps/linux/m68k/setjmp.S b/libc/sysdeps/linux/m68k/setjmp.S
index 5f05b8591..d10163ec6 100644
--- a/libc/sysdeps/linux/m68k/setjmp.S
+++ b/libc/sysdeps/linux/m68k/setjmp.S
@@ -14,7 +14,9 @@ __sigsetjmp:
moveal %sp@(4), %a0
movel %sp@(0), %a0@(JB_PC)
moveml %d2-%d7/%a2-%a7, %a0@(JB_REGS)
-#if defined __HAVE_68881__ || defined __UCLIBC_HAS_FPU__
+#if defined(__mcffpu__) && defined (__UCLIBC_HAS_FPU__)
+ fmovemd %fp2-%fp7, %a0@(JB_FPREGS)
+#elif defined(__HAVE_68881__)
fmovemx %fp2-%fp7, %a0@(JB_FPREGS)
#endif
clrl %d0
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-15 01:41:07 +0000