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-rw-r--r--libc/sysdeps/linux/bfin/Makefile.arch4
-rw-r--r--libc/sysdeps/linux/bfin/bfin_fixed_code.h155
-rw-r--r--libc/sysdeps/linux/bfin/bfin_sram.h1
-rw-r--r--libc/sysdeps/linux/bfin/bits/syscalls.h53
-rw-r--r--libc/sysdeps/linux/bfin/brk.c36
-rw-r--r--libc/sysdeps/linux/bfin/syscall.c26
-rw-r--r--libc/sysdeps/linux/bfin/sysdep.h1
7 files changed, 221 insertions, 55 deletions
diff --git a/libc/sysdeps/linux/bfin/Makefile.arch b/libc/sysdeps/linux/bfin/Makefile.arch
index 6c271509e..81fca3295 100644
--- a/libc/sysdeps/linux/bfin/Makefile.arch
+++ b/libc/sysdeps/linux/bfin/Makefile.arch
@@ -5,11 +5,11 @@
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
-CSRC := brk.c bsdsetjmp.c clone.c syscall.c \
+CSRC := bsdsetjmp.c clone.c syscall.c \
sram-alloc.c sram-free.c dma-memcpy.c
SSRC := __longjmp.S setjmp.S bsd-_setjmp.S vfork.S
-ARCH_HEADERS := bfin_l1layout.h bfin_sram.h
+ARCH_HEADERS := bfin_fixed_code.h bfin_l1layout.h bfin_sram.h
include $(top_srcdir)libc/sysdeps/linux/Makefile.commonarch
diff --git a/libc/sysdeps/linux/bfin/bfin_fixed_code.h b/libc/sysdeps/linux/bfin/bfin_fixed_code.h
new file mode 100644
index 000000000..914257156
--- /dev/null
+++ b/libc/sysdeps/linux/bfin/bfin_fixed_code.h
@@ -0,0 +1,155 @@
+/* Atomic instructions for userspace.
+ *
+ * The actual implementations can be found in the kernel.
+ *
+ * Copyright (c) 2008 Analog Devices, Inc.
+ *
+ * Licensed under the LGPL v2.1.
+ */
+
+#ifndef __BFIN_FIXED_CODE_H__
+#define __BFIN_FIXED_CODE_H__
+
+#include <stdint.h>
+
+#include <asm/fixed_code.h>
+
+#ifndef __ASSEMBLY__
+
+static inline
+uint32_t bfin_atomic_xchg32(uint32_t *__bfin_ptr, uint32_t __bfin_newval)
+{
+ uint32_t __bfin_ret;
+ /* Input: P0: memory address to use
+ * R1: value to store
+ * Output: R0: old contents of the memory address
+ */
+ __asm__ __volatile__(
+ "CALL (%[__bfin_func])"
+ : "=q0" (__bfin_ret), "=m" (*__bfin_ptr)
+ : [__bfin_func] "a" (ATOMIC_XCHG32), "q1" (__bfin_newval),
+ "qA" (__bfin_ptr), "m" (*__bfin_ptr)
+ : "RETS", "memory"
+ );
+ return __bfin_ret;
+}
+
+static inline
+uint32_t bfin_atomic_cas32(uint32_t *__bfin_ptr, uint32_t __bfin_exp, uint32_t __bfin_newval)
+{
+ uint32_t __bfin_ret;
+ /* Input: P0: memory address to use
+ * R1: compare value
+ * R2: new value to store
+ * Output: R0: old contents of the memory address
+ */
+ __asm__ __volatile__(
+ "CALL (%[__bfin_func])"
+ : "=q0" (__bfin_ret), "=m" (*__bfin_ptr)
+ : [__bfin_func] "a" (ATOMIC_CAS32), "q1" (__bfin_exp), "q2" (__bfin_newval),
+ "qA" (__bfin_ptr), "m" (*__bfin_ptr)
+ : "RETS", "memory"
+ );
+ return __bfin_ret;
+}
+
+static inline
+uint32_t bfin_atomic_add32(uint32_t *__bfin_ptr, uint32_t __bfin_inc)
+{
+ uint32_t __bfin_ret;
+ /* Input: P0: memory address to use
+ * R0: value to add
+ * Output: R0: new contents of the memory address
+ * R1: previous contents of the memory address
+ */
+ __asm__ __volatile__(
+ "CALL (%[__bfin_func])"
+ : "=q0" (__bfin_ret), "=m" (*__bfin_ptr)
+ : [__bfin_func] "a" (ATOMIC_ADD32), "q0" (__bfin_inc),
+ "qA" (__bfin_ptr), "m" (*__bfin_ptr)
+ : "R1", "RETS", "memory"
+ );
+ return __bfin_ret;
+}
+#define bfin_atomic_inc32(ptr) bfin_atomic_add32(ptr, 1)
+
+static inline
+uint32_t bfin_atomic_sub32(uint32_t *__bfin_ptr, uint32_t __bfin_dec)
+{
+ uint32_t __bfin_ret;
+ /* Input: P0: memory address to use
+ * R0: value to subtract
+ * Output: R0: new contents of the memory address
+ * R1: previous contents of the memory address
+ */
+ __asm__ __volatile__(
+ "CALL (%[__bfin_func])"
+ : "=q0" (__bfin_ret), "=m" (*__bfin_ptr)
+ : [__bfin_func] "a" (ATOMIC_SUB32), "q0" (__bfin_dec),
+ "qA" (__bfin_ptr), "m" (*__bfin_ptr)
+ : "R1", "RETS", "memory"
+ );
+ return __bfin_ret;
+}
+#define bfin_atomic_dec32(ptr) bfin_atomic_sub32(ptr, 1)
+
+static inline
+uint32_t bfin_atomic_ior32(uint32_t *__bfin_ptr, uint32_t __bfin_ior)
+{
+ uint32_t __bfin_ret;
+ /* Input: P0: memory address to use
+ * R0: value to ior
+ * Output: R0: new contents of the memory address
+ * R1: previous contents of the memory address
+ */
+ __asm__ __volatile__(
+ "CALL (%[__bfin_func])"
+ : "=q0" (__bfin_ret), "=m" (*__bfin_ptr)
+ : [__bfin_func] "a" (ATOMIC_IOR32), "q0" (__bfin_ior),
+ "qA" (__bfin_ptr), "m" (*__bfin_ptr)
+ : "R1", "RETS", "memory"
+ );
+ return __bfin_ret;
+}
+
+static inline
+uint32_t bfin_atomic_and32(uint32_t *__bfin_ptr, uint32_t __bfin_and)
+{
+ uint32_t __bfin_ret;
+ /* Input: P0: memory address to use
+ * R0: value to and
+ * Output: R0: new contents of the memory address
+ * R1: previous contents of the memory address
+ */
+ __asm__ __volatile__(
+ "CALL (%[__bfin_func])"
+ : "=q0" (__bfin_ret), "=m" (*__bfin_ptr)
+ : [__bfin_func] "a" (ATOMIC_AND32), "q0" (__bfin_and),
+ "qA" (__bfin_ptr), "m" (*__bfin_ptr)
+ : "R1", "RETS", "memory"
+ );
+ return __bfin_ret;
+}
+
+static inline
+uint32_t bfin_atomic_xor32(uint32_t *__bfin_ptr, uint32_t __bfin_xor)
+{
+ uint32_t __bfin_ret;
+ /* Input: P0: memory address to use
+ * R0: value to xor
+ * Output: R0: new contents of the memory address
+ * R1: previous contents of the memory address
+ */
+ __asm__ __volatile__(
+ "CALL (%[__bfin_func])"
+ : "=q0" (__bfin_ret), "=m" (*__bfin_ptr)
+ : [__bfin_func] "a" (ATOMIC_XOR32), "q0" (__bfin_xor),
+ "qA" (__bfin_ptr), "m" (*__bfin_ptr)
+ : "R1", "RETS", "memory"
+ );
+ return __bfin_ret;
+}
+
+#endif
+
+#endif
diff --git a/libc/sysdeps/linux/bfin/bfin_sram.h b/libc/sysdeps/linux/bfin/bfin_sram.h
index eea729b05..278514d5d 100644
--- a/libc/sysdeps/linux/bfin/bfin_sram.h
+++ b/libc/sysdeps/linux/bfin/bfin_sram.h
@@ -18,6 +18,7 @@ __BEGIN_DECLS
#define L1_DATA_A_SRAM 0x00000002
#define L1_DATA_B_SRAM 0x00000004
#define L1_DATA_SRAM 0x00000006
+#define L2_SRAM 0x00000008
extern void *sram_alloc(size_t size, unsigned long flags)
__attribute_malloc__ __attribute_warn_unused_result__;
diff --git a/libc/sysdeps/linux/bfin/bits/syscalls.h b/libc/sysdeps/linux/bfin/bits/syscalls.h
index 0833a1fc1..37e564d2c 100644
--- a/libc/sysdeps/linux/bfin/bits/syscalls.h
+++ b/libc/sysdeps/linux/bfin/bits/syscalls.h
@@ -134,5 +134,58 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6
__syscall_return(type,__res); \
}
+
+/* Define a macro which expands into the inline wrapper code for a system call */
+#define INLINE_SYSCALL(name, nr, args...) \
+({ \
+ INTERNAL_SYSCALL_DECL(err); \
+ long result_var = INTERNAL_SYSCALL(name, err, nr, args); \
+ if (INTERNAL_SYSCALL_ERROR_P(result_var, err)) { \
+ __set_errno(INTERNAL_SYSCALL_ERRNO(result_var, err)); \
+ result_var = -1L; \
+ } \
+ result_var; \
+})
+
+#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+#define INTERNAL_SYSCALL_ERROR_P(val, err) ((unsigned long)val >= (unsigned long)(-4095))
+#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
+
+#define INTERNAL_SYSCALL(name, err, nr, args...) \
+({ \
+ long __res; \
+ __asm__ __volatile__ ( \
+ "excpt 0;\n\t" \
+ : "=q0" (__res) \
+ : "qA" (__NR_##name) ASMFMT_##nr(args) \
+ : "memory","CC"); \
+ __res; \
+})
+
+#define ASMFMT_0()
+
+#define ASMFMT_1(arg1) \
+ , "q0" ((long)(arg1))
+
+#define ASMFMT_2(arg1, arg2) \
+ ASMFMT_1(arg1) \
+ , "q1" ((long)(arg2))
+
+#define ASMFMT_3(arg1, arg2, arg3) \
+ ASMFMT_2(arg1, arg2) \
+ , "q2" ((long)(arg3))
+
+#define ASMFMT_4(arg1, arg2, arg3, arg4) \
+ ASMFMT_3(arg1, arg2, arg3) \
+ , "q3" ((long)(arg4))
+
+#define ASMFMT_5(arg1, arg2, arg3, arg4, arg5) \
+ ASMFMT_4(arg1, arg2, arg3, arg4) \
+ , "q4" ((long)(arg5))
+
+#define ASMFMT_6(arg1, arg2, arg3, arg4, arg5, arg6) \
+ ASMFMT_5(arg1, arg2, arg3, arg4, arg5) \
+ , "q5" ((long)(arg6))
+
#endif /* __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */
diff --git a/libc/sysdeps/linux/bfin/brk.c b/libc/sysdeps/linux/bfin/brk.c
deleted file mode 100644
index 88b82cf64..000000000
--- a/libc/sysdeps/linux/bfin/brk.c
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
- *
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
- */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sys/syscall.h>
-
-/* libc_hidden_proto(brk) */
-
-/* This must be initialized data because commons can't have aliases. */
-void * __curbrk attribute_hidden = 0;
-
-int brk (void *addr)
-{
- void *newbrk;
-
- __asm__ __volatile__(
- "P0 = %2;\n\t"
- "excpt 0;\n\t"
- : "=q0" (newbrk)
- : "q0" (addr), "i" (__NR_brk): "P0" );
-
- __curbrk = newbrk;
-
- if (newbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-libc_hidden_def(brk)
diff --git a/libc/sysdeps/linux/bfin/syscall.c b/libc/sysdeps/linux/bfin/syscall.c
index 1db873874..d68eb6e2f 100644
--- a/libc/sysdeps/linux/bfin/syscall.c
+++ b/libc/sysdeps/linux/bfin/syscall.c
@@ -29,24 +29,16 @@ long syscall(long sysnum, long a, long b, long c, long d, long e, long f)
int _r0 = 0;
__asm__ __volatile__ (
- "R5 = %7;"
- "R4 = %6;"
- "R3 = %5;"
- "R2 = %4;"
- "R1 = %3;"
- "R0 = %2;"
- "P0 = %1;"
"excpt 0;"
- "%0 = R0;"
- : "=r" (_r0)
- : "rm" (sysnum),
- "rm" (a),
- "rm" (b),
- "rm" (c),
- "rm" (d),
- "rm" (e),
- "rm" (f)
- : "memory","CC","R0","R1","R2","R3","R4","R5","P0");
+ : "=q0" (_r0)
+ : "qA" (sysnum),
+ "q0" (a),
+ "q1" (b),
+ "q2" (c),
+ "q3" (d),
+ "q4" (e),
+ "q5" (f)
+ : "memory", "CC");
if (_r0 >= (unsigned long) -4095) {
(*__errno_location()) = (-_r0);
diff --git a/libc/sysdeps/linux/bfin/sysdep.h b/libc/sysdeps/linux/bfin/sysdep.h
index 4080c22a4..0a633681b 100644
--- a/libc/sysdeps/linux/bfin/sysdep.h
+++ b/libc/sysdeps/linux/bfin/sysdep.h
@@ -14,6 +14,7 @@
#ifdef __ASSEMBLER__
#define ENTRY(sym) .global sym; .type sym, STT_FUNC; sym:
+#define ENDPROC(sym) .size sym, . - sym
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 16:19:16 +0000