Hi,
vince...@andestech.com wrote,
> Dear all:
> Stafford is right. internal_syscall_ncs6 is able to define in
> libc/sysdeps/linux/nds32/bits/syscalls.h like the following.
>
> #define internal_syscall_ncs6(name, err, arg1, arg2, arg3, arg4, arg5, arg6)
> \
> ({ \
> register long __res __asm__("$r0");
> \
> register long __no __asm__("$r0") = (long) (name);
> \
> register long __arg1 __asm__("$r1") = (long) (arg1);
> \
> register long __arg2 __asm__("$r2") = (long) (arg2);
> \
> register long __arg3 __asm__("$r3") = (long) (arg3);
> \
> register long __arg4 __asm__("$r4") = (long) (arg4);
> \
> register long __arg5 __asm__("$r5") = (long) (arg5);
> \
> __asm__ volatile ( \
> "addi10.sp\t #-4\n\t"
> \
> CFI_ADJUST_CFA_OFFSET(4)"\n\t"
> \
> "push\t %7\n\t"
> \
> CFI_ADJUST_CFA_OFFSET(4)"\n\t"
> \
> __issue_syscall (LIB_SYSCALL)
> \
> "pop\t %7\n\t" \
> CFI_ADJUST_CFA_OFFSET(-4)"\n\t"
> \
> "addi10.sp\t #4\n\t" \
> CFI_ADJUST_CFA_OFFSET(-4)"\n\t"
> \
> __asm__ volatile (
> \
> __issue_syscall (LIB_SYSCALL)
> \
> : "=r" (__res) /* output operands */
> \
> : "r" (__no) /* input operands */
> \
> , "r" (__arg1) /* input operands */
> \
> , "r" (__arg2) /* input operands */
> \
> , "r" (__arg3) /* input operands */
> \
> , "r" (__arg4) /* input operands */
> \
> , "r" (__arg5) /* input operands */
> \
> , "r" (arg6) /* input operands */
> \
> : __SYSCALL_CLOBBERS); /* list of clobbered registers */
> \
> __res; \
> })
>
> The value of argument "name" is the number of specified syscall.
> This syscall will be sent to kernel later through sys_syscall by
> "__issue_syscall (LIB_SYSCALL)".
>
When testing Stafford patch from:
https://github.com/stffrdhrn/uclibc-ng.git -> branch gen-syscall
I added a missing ); before the second __asm__ volatile.
I get:
/home/wbx/nds32/toolchain_andes-ag101p_uclibc-ng_nds32le/usr/bin/nds32le-openadk-linux-uclibc-gcc
-c libc/sysdeps/linux/common/syscall.c -o
libc/sysdeps/linux/common/syscall.os -Wall -Wstrict-prototypes
-Wstrict-aliasing -funsigned-char -fno-builtin -fno-asm
-fmerge-all-constants -std=gnu99 -fno-stack-protector -nostdinc
-I./include -I./include -include libc-symbols.h
-I./libc/sysdeps/linux/nds32 -I./libc/sysdeps/linux
-I./ldso/ldso/nds32 -I./ldso/include -I. -Os -fstrict-aliasing
-fwrapv -fno-ident -mcpu=n13 -Os -pipe -fomit-frame-pointer
-fno-unwind-tables -fno-asynchronous-unwind-tables
-D__USE_STDIO_FUTEXES__ -DHAVE_FORCED_UNWIND -D_LIBC_REENTRANT
-I./libpthread/nptl -I./libpthread/nptl
-I./libpthread/nptl/sysdeps/unix/sysv/linux/nds32
-I./libpthread/nptl/sysdeps/nds32 -I./libpthread/nptl/sysdeps/nds32
-I./libpthread/nptl/sysdeps/unix/sysv/linux
-I./libpthread/nptl/sysdeps/unix/sysv/linux
-I./libpthread/nptl/sysdeps/pthread
-I./libpthread/nptl/sysdeps/pthread/bits
-I./libpthread/nptl/sysdeps/generic -I./libc/sysdeps/linux/common
-isystem
/home/wbx/nds32/toolchain_andes-ag101p_uclibc-ng_nds32le/usr/lib/gcc/nds32le-openadk-linux-uclibc/4.9.4/include-fixed
-isystem
/home/wbx/nds32/toolchain_andes-ag101p_uclibc-ng_nds32le/usr/lib/gcc/nds32le-openadk-linux-uclibc/4.9.4/include
-I/home/wbx/nds32/target_andes-ag101p_uclibc-ng_nds32le/usr/include/
-DNDEBUG -DIN_LIB=libc -DPIC -fPIC -MT
libc/sysdeps/linux/common/syscall.os -MD -MP -MF
libc/sysdeps/linux/common/.syscall.os.dep
{standard input}: Assembler messages:
{standard input}:62: Error: Unrecognized operand/register, smw.adm
$r-1,[$sp],$r-1,0.
{standard input}:65: Error: Unrecognized operand/register, lmw.bim
$r-1,[$sp],$r-1,0.
Makerules:369: recipe for target
'libc/sysdeps/linux/common/syscall.os' failed
Ideas?
best regards
Waldemar
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