diff options
| -rw-r--r-- | extra/Configs/Config.in | 1 | ||||
| -rw-r--r-- | libc/sysdeps/linux/riscv32/jmpbuf-unwind.h | 7 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/riscv32/pt-machine.h | 61 |
3 files changed, 63 insertions, 6 deletions
diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index 2d1692ba5..122a7eb71 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -594,7 +594,6 @@ config UCLIBC_HAS_LINUXTHREADS # linuxthreads need nanosleep() select UCLIBC_HAS_REALTIME depends on !TARGET_aarch64 && \ - !TARGET_riscv32 && \ !TARGET_metag help If you want to compile uClibc with Linuxthreads support, then answer Y. diff --git a/libc/sysdeps/linux/riscv32/jmpbuf-unwind.h b/libc/sysdeps/linux/riscv32/jmpbuf-unwind.h index 2e5f37f10..fb5d65ddd 100644 --- a/libc/sysdeps/linux/riscv32/jmpbuf-unwind.h +++ b/libc/sysdeps/linux/riscv32/jmpbuf-unwind.h @@ -23,8 +23,8 @@ /* Test if longjmp to JMPBUF would unwind the frame containing a local variable at ADDRESS. */ -#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \ - ((void *) (address) < (void *) demangle ((jmpbuf)[0].__sp)) +#define _JMPBUF_UNWINDS(jmpbuf, address) \ + ((void *) (address) < (void *) ((jmpbuf)[0].__sp)) #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj) @@ -33,9 +33,6 @@ static inline uintptr_t __attribute__ ((unused)) _jmpbuf_sp (__jmp_buf regs) { uintptr_t sp = regs[0].__sp; -#ifdef PTR_DEMANGLE - PTR_DEMANGLE (sp); -#endif return sp; } diff --git a/libpthread/linuxthreads/sysdeps/riscv32/pt-machine.h b/libpthread/linuxthreads/sysdeps/riscv32/pt-machine.h new file mode 100644 index 000000000..38f0d8eff --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/riscv32/pt-machine.h @@ -0,0 +1,61 @@ +/* + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 +#include <features.h> + +#ifndef PT_EI +# define PT_EI __extern_always_inline +#endif + +#define HAS_COMPARE_AND_SWAP +PT_EI int +__compare_and_swap (long int *p, long int oldval, long int newval) +{ + long int ret, temp; + + __asm__ __volatile__ + ("/* Inline compare & swap */\n" + "1:\n\t" + "lr.w %1,%2\n\t" + "li %0,0\n\t" + "bne %1,%3,2f\n\t" + "li %0,1\n\t" + "sc.w %1,%4,%2\n\t" + "bnez %1,1b\n" + "2:\n\t" + "/* End compare & swap */" + : "=&r" (ret), "=&r" (temp), "+A" (*p) + : "r" (oldval), "r" (newval) + : "memory"); + + return ret; +} + +extern long int testandset (int *spinlock); + +PT_EI long int +testandset (int *spinlock) +{ + unsigned int old = 1; + int tmp = 1; + + __asm__ __volatile__ ( + "amoswap.w %0, %2, %1" + : "=r" (old), "+A" (*spinlock) + : "r" (tmp) + : "memory"); + + return old; +} + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME stack_pointer +register char * stack_pointer __asm__ ("sp"); + +#else +#error PT_MACHINE already defined +#endif /* pt-machine.h */ |