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-rw-r--r--libc/sysdeps/linux/sparc/Makefile.arch2
-rw-r--r--libc/sysdeps/linux/sparc/bits/fcntl.h2
-rw-r--r--libc/sysdeps/linux/sparc/bits/fenv.h60
-rw-r--r--libc/sysdeps/linux/sparc/bits/stat.h4
-rw-r--r--libc/sysdeps/linux/sparc/fpu_control.h24
-rw-r--r--libc/sysdeps/linux/sparc/sigaction.c25
-rw-r--r--libc/sysdeps/linux/sparc/sigreturn_stub.S14
-rw-r--r--libc/sysdeps/linux/sparc/sysdep.h9
8 files changed, 83 insertions, 57 deletions
diff --git a/libc/sysdeps/linux/sparc/Makefile.arch b/libc/sysdeps/linux/sparc/Makefile.arch
index d34624f36..c9529b344 100644
--- a/libc/sysdeps/linux/sparc/Makefile.arch
+++ b/libc/sysdeps/linux/sparc/Makefile.arch
@@ -6,7 +6,7 @@
#
CSRC-y := brk.c __syscall_error.c sigaction.c
-SSRC-y := __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
+SSRC-y := __longjmp.S setjmp.S sigreturn_stub.S bsd-setjmp.S bsd-_setjmp.S \
syscall.S urem.S udiv.S umul.S sdiv.S rem.S pipe.S fork.S vfork.S clone.S
CSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += makecontext.c
diff --git a/libc/sysdeps/linux/sparc/bits/fcntl.h b/libc/sysdeps/linux/sparc/bits/fcntl.h
index 935495937..35224cdb3 100644
--- a/libc/sysdeps/linux/sparc/bits/fcntl.h
+++ b/libc/sysdeps/linux/sparc/bits/fcntl.h
@@ -252,3 +252,5 @@ extern ssize_t tee (int __fdin, int __fdout, size_t __len,
#endif
__END_DECLS
+/* Include generic Linux declarations. */
+#include <bits/fcntl-linux.h>
diff --git a/libc/sysdeps/linux/sparc/bits/fenv.h b/libc/sysdeps/linux/sparc/bits/fenv.h
index 79ab8cefa..83b32cc51 100644
--- a/libc/sysdeps/linux/sparc/bits/fenv.h
+++ b/libc/sysdeps/linux/sparc/bits/fenv.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+/* 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
@@ -12,26 +12,34 @@
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/>. */
+ <https://www.gnu.org/licenses/>. */
#ifndef _FENV_H
# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
#endif
+#include <bits/wordsize.h>
+
+
/* Define bits representing the exception. We use the bit positions
of the appropriate accrued exception bits from the FSR. */
enum
{
- FE_INVALID = (1 << 9),
-#define FE_INVALID FE_INVALID
- FE_OVERFLOW = (1 << 8),
-#define FE_OVERFLOW FE_OVERFLOW
- FE_UNDERFLOW = (1 << 7),
-#define FE_UNDERFLOW FE_UNDERFLOW
- FE_DIVBYZERO = (1 << 6),
-#define FE_DIVBYZERO FE_DIVBYZERO
- FE_INEXACT = (1 << 5)
-#define FE_INEXACT FE_INEXACT
+ FE_INVALID =
+#define FE_INVALID (1 << 9)
+ FE_INVALID,
+ FE_OVERFLOW =
+#define FE_OVERFLOW (1 << 8)
+ FE_OVERFLOW,
+ FE_UNDERFLOW =
+#define FE_UNDERFLOW (1 << 7)
+ FE_UNDERFLOW,
+ FE_DIVBYZERO =
+#define FE_DIVBYZERO (1 << 6)
+ FE_DIVBYZERO,
+ FE_INEXACT =
+#define FE_INEXACT (1 << 5)
+ FE_INEXACT
};
#define FE_ALL_EXCEPT \
@@ -42,14 +50,18 @@ enum
for the appropriate macros. */
enum
{
- FE_TONEAREST = (0U << 30),
-#define FE_TONEAREST FE_TONEAREST
- FE_TOWARDZERO = (1U << 30),
-#define FE_TOWARDZERO FE_TOWARDZERO
- FE_UPWARD = (2U << 30),
-#define FE_UPWARD FE_UPWARD
- FE_DOWNWARD = (3U << 30)
-#define FE_DOWNWARD FE_DOWNWARD
+ FE_TONEAREST =
+#define FE_TONEAREST (0 << 30)
+ FE_TONEAREST,
+ FE_TOWARDZERO =
+#define FE_TOWARDZERO (1 << 30)
+ FE_TOWARDZERO,
+ FE_UPWARD =
+#define FE_UPWARD (-0x7fffffff - 1) /* (2 << 30) */
+ FE_UPWARD,
+ FE_DOWNWARD =
+#define FE_DOWNWARD (-0x40000000) /* (3 << 30) */
+ FE_DOWNWARD
};
#define __FE_ROUND_MASK (3U << 30)
@@ -70,6 +82,8 @@ typedef unsigned long int fenv_t;
# define FE_NOMASK_ENV ((const fenv_t *) -2)
#endif
-/* For internal use only: access the fp state register. */
-#define __fenv_stfsr(X) __asm__ ("st %%fsr,%0" : "=m" (X))
-#define __fenv_ldfsr(X) __asm__ __volatile__ ("ld %0,%%fsr" : : "m" (X))
+/* Type representing floating-point control modes. */
+typedef unsigned long int femode_t;
+
+/* Default floating-point control modes. */
+# define FE_DFL_MODE ((const femode_t *) -1L)
diff --git a/libc/sysdeps/linux/sparc/bits/stat.h b/libc/sysdeps/linux/sparc/bits/stat.h
index b88885fe2..0fbef8b3f 100644
--- a/libc/sysdeps/linux/sparc/bits/stat.h
+++ b/libc/sysdeps/linux/sparc/bits/stat.h
@@ -53,7 +53,7 @@ struct stat
#else
__blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
#endif
-#ifdef __USE_MISC
+#if defined(__USE_MISC) || defined(__USE_XOPEN2K8)
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -93,7 +93,7 @@ struct stat64
__blksize_t st_blksize; /* Optimal block size for I/O. */
__blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
-#ifdef __USE_MISC
+#if defined(__USE_MISC) || defined(__USE_XOPEN2K8)
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
diff --git a/libc/sysdeps/linux/sparc/fpu_control.h b/libc/sysdeps/linux/sparc/fpu_control.h
index 57f1dbb67..542f9fb1b 100644
--- a/libc/sysdeps/linux/sparc/fpu_control.h
+++ b/libc/sysdeps/linux/sparc/fpu_control.h
@@ -1,6 +1,5 @@
/* FPU control word bits. SPARC version.
- Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
- Contributed by Miguel de Icaza
+ 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
@@ -14,13 +13,14 @@
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/>. */
+ <https://www.gnu.org/licenses/>. */
#ifndef _FPU_CONTROL_H
#define _FPU_CONTROL_H 1
#include <features.h>
+#include <bits/wordsize.h>
/* masking of interrupts */
#define _FPU_MASK_IM 0x08000000
@@ -41,7 +41,7 @@
#define _FPU_RC_ZERO 0x40000000
#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
-#define _FPU_RESERVED 0x30300000 /* Reserved bits in cw */
+#define _FPU_RESERVED 0x303e0000 /* Reserved bits in cw */
/* Now two recommended cw */
@@ -56,12 +56,20 @@
/* Type of the control word. */
typedef unsigned long int fpu_control_t;
-#define _FPU_GETCW(cw) __asm__ ("st %%fsr,%0" : "=m" (*&cw))
-#define _FPU_SETCW(cw) __asm__ ("ld %0,%%fsr" : : "m" (*&cw))
+#if __WORDSIZE == 64
+# define _FPU_GETCW(cw) __asm__ __volatile__ ("stx %%fsr,%0" : "=m" (*&cw))
+# define _FPU_SETCW(cw) __asm__ __volatile__ ("ldx %0,%%fsr" : : "m" (*&cw))
+#else
+# ifdef __leon__
+ /* Prevent stfsr from being placed directly after other fp instruction. */
+# define _FPU_GETCW(cw) __asm__ __volatile__ ("nop; st %%fsr,%0" : "=m" (*&cw))
+# else
+# define _FPU_GETCW(cw) __asm__ __volatile__ ("st %%fsr,%0" : "=m" (*&cw))
+# endif
+# define _FPU_SETCW(cw) __asm__ __volatile__ ("ld %0,%%fsr" : : "m" (*&cw))
+#endif
-#if 0
/* Default control word set at startup. */
extern fpu_control_t __fpu_control;
-#endif
#endif /* fpu_control.h */
diff --git a/libc/sysdeps/linux/sparc/sigaction.c b/libc/sysdeps/linux/sparc/sigaction.c
index 7895e3acd..447943e3a 100644
--- a/libc/sysdeps/linux/sparc/sigaction.c
+++ b/libc/sysdeps/linux/sparc/sigaction.c
@@ -30,8 +30,8 @@
_syscall5(int, rt_sigaction, int, a, int, b, int, c, int, d, int, e)
-static void __rt_sigreturn_stub(void);
-static void __sigreturn_stub(void);
+void __rt_sigreturn_stub(void);
+void __sigreturn_stub(void);
int __libc_sigaction(int sig, const struct sigaction *act, struct sigaction *oact)
{
@@ -75,24 +75,3 @@ libc_hidden_weak(sigaction)
# endif
#endif
-
-static void
-__rt_sigreturn_stub(void)
-{
- __asm__(
- "mov %0, %%g1\n\t"
- "ta 0x10\n\t"
- : /* no outputs */
- : "i" (__NR_rt_sigreturn)
- );
-}
-static void
-__sigreturn_stub(void)
-{
- __asm__(
- "mov %0, %%g1\n\t"
- "ta 0x10\n\t"
- : /* no outputs */
- : "i" (__NR_sigreturn)
- );
-}
diff --git a/libc/sysdeps/linux/sparc/sigreturn_stub.S b/libc/sysdeps/linux/sparc/sigreturn_stub.S
new file mode 100644
index 000000000..33f51409b
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sigreturn_stub.S
@@ -0,0 +1,14 @@
+#include <sysdep.h>
+
+ nop
+ nop
+
+ENTRY_NOCFI (__rt_sigreturn_stub)
+ mov __NR_rt_sigreturn, %g1
+ ta 0x10
+END_NOCFI (__rt_sigreturn_stub)
+
+ENTRY_NOCFI (__sigreturn_stub)
+ mov __NR_sigreturn, %g1
+ ta 0x10
+END_NOCFI (__sigreturn_stub)
diff --git a/libc/sysdeps/linux/sparc/sysdep.h b/libc/sysdeps/linux/sparc/sysdep.h
index c3897ec08..761d21454 100644
--- a/libc/sysdeps/linux/sparc/sysdep.h
+++ b/libc/sysdeps/linux/sparc/sysdep.h
@@ -17,6 +17,15 @@
C_LABEL(name) \
cfi_startproc;
+#define ENTRY_NOCFI(name) \
+ .align 4; \
+ .global C_SYMBOL_NAME(name); \
+ .type name, @function; \
+C_LABEL(name)
+
+#define END_NOCFI(name) \
+ .size name, . - name
+
#define END(name) \
cfi_endproc; \
.size name, . - name
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-13 07:10:08 +0000