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Additional porting for riscv64.
Adds handling for the PC register, malloc_hook_mmap, and syscalls. Successfully built in Ubuntu with these changes.
This commit is contained in:
Steve Langasek
Aliaksey Kandratsenka
parent
f0e289bdbb
commit
3134955875
@ -28,6 +28,7 @@ AC_DEFUN([AC_PC_FROM_UCONTEXT],
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pc_fields="$pc_fields uc_mcontext.sc_ip" # Linux (ia64)
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pc_fields="$pc_fields uc_mcontext.pc" # Linux (mips)
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pc_fields="$pc_fields uc_mcontext.uc_regs->gregs[[PT_NIP]]" # Linux (ppc)
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pc_fields="$pc_fields uc_mcontext.__gregs[[REG_PC]]" # Linux (riscv64)
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pc_fields="$pc_fields uc_mcontext.psw.addr" # Linux (s390)
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pc_fields="$pc_fields uc_mcontext.gregs[[R15]]" # Linux (arm old [untested])
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pc_fields="$pc_fields uc_mcontext.arm_pc" # Linux (arm arch 5)
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@ -130,13 +130,13 @@
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#ifndef SYS_LINUX_SYSCALL_SUPPORT_H
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#define SYS_LINUX_SYSCALL_SUPPORT_H
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/* We currently only support x86-32, x86-64, ARM, MIPS, PPC/PPC64, Aarch64, s390 and s390x
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* on Linux.
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/* We currently only support x86-32, x86-64, ARM, MIPS, PPC/PPC64, Aarch64,
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* s390, s390x, and riscv64 on Linux.
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* Porting to other related platforms should not be difficult.
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*/
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#if (defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
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defined(__mips__) || defined(__mips64) || defined(__mips64el__) || defined(__PPC__) || \
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defined(__aarch64__) || defined(__s390__)) \
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defined(__aarch64__) || defined(__s390__) || defined(__riscv)) \
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&& (defined(__linux))
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#ifndef SYS_CPLUSPLUS
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@ -938,6 +938,22 @@ struct kernel_stat {
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# endif
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#endif /* __s390__ */
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/* End of s390/s390x definitions */
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#elif defined(__riscv)
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# ifndef __NR_gettid
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# define __NR_gettid 178
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# endif
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# ifndef __NR_futex
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# define __NR_futex 422
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# endif
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# ifndef __NR_getdents64
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# define __NR_getdents64 61
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# endif
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# ifndef __NR_openat
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# define __NR_openat 56
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# endif
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# ifndef __NR_fstatat
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# define __NR_fstatat 79
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# endif
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#endif
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@ -1001,7 +1017,7 @@ struct kernel_stat {
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#undef LSS_RETURN
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#if (defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
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defined(__aarch64__) || defined(__s390__))
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defined(__aarch64__) || defined(__s390__) || defined(__riscv))
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/* Failing system calls return a negative result in the range of
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* -1..-4095. These are "errno" values with the sign inverted.
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*/
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@ -2460,6 +2476,94 @@ struct kernel_stat {
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}
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LSS_RETURN(int, __ret);
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}
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#elif defined(__riscv)
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#undef LSS_REG
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#define LSS_REG(r,a) register long __a##r __asm__("a"#r) = \
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(long)(a)
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#undef LSS_BODY
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#define LSS_BODY(type, name, args...) \
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register long __a7 __asm__("a7") = __NR_##name; \
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long __res; \
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__asm__ __volatile__ ( \
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"scall\n\t" \
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: "+r" (__a0) \
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: "r" (__a7), ##args \
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: "memory"); \
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__res = __a0; \
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LSS_RETURN(type, __res)
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#undef _syscall0
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#define _syscall0(type,name) \
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type LSS_NAME(name)() { \
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register long __a7 __asm__("a7") = __NR_##name; \
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register long __a0 __asm__("a0"); \
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long __res; \
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__asm__ __volatile__ ( \
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"scall\n\t" \
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: "=r" (__a0) \
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: "r" (__a7) \
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: "memory"); \
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__res = __a0; \
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LSS_RETURN(type, __res); \
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}
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#undef _syscall1
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#define _syscall1(type, name, type1, arg1) \
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type LSS_NAME(name)(type1 arg1) { \
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/* There is no need for using a volatile temp. */ \
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LSS_REG(0, arg1); \
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LSS_BODY(type, name); \
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}
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#undef _syscall2
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#define _syscall2(type, name, type1, arg1, type2, arg2) \
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type LSS_NAME(name)(type1 arg1, type2 arg2) { \
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LSS_REG(0, arg1); \
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LSS_REG(1, arg2); \
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LSS_BODY(type, name, "r"(__a1)); \
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}
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#undef _syscall3
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#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
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type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \
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LSS_REG(0, arg1); \
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LSS_REG(1, arg2); \
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LSS_REG(2, arg3); \
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LSS_BODY(type, name, "r"(__a1), "r"(__a2)); \
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}
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#undef _syscall4
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#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
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type4, arg4) \
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type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
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LSS_REG(0, arg1); \
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LSS_REG(1, arg2); \
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LSS_REG(2, arg3); \
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LSS_REG(3, arg4); \
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LSS_BODY(type, name, "r"(__a1), "r"(__a2), "r"(__a3)); \
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}
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#undef _syscall5
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#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
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type5,arg5) \
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type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
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type5 arg5) { \
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LSS_REG(0, arg1); \
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LSS_REG(1, arg2); \
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LSS_REG(2, arg3); \
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LSS_REG(3, arg4); \
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LSS_REG(4, arg5); \
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LSS_BODY(type, name, "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4)); \
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}
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#undef _syscall6
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#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
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type5,arg5,type6,arg6) \
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type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
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type5 arg5, type6 arg6) { \
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LSS_REG(0, arg1); \
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LSS_REG(1, arg2); \
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LSS_REG(2, arg3); \
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LSS_REG(3, arg4); \
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LSS_REG(4, arg5); \
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LSS_REG(5, arg6); \
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LSS_BODY(type, name, "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4), \
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"r"(__a5)); \
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}
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#endif
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#define __NR__exit __NR_exit
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#define __NR__gettid __NR_gettid
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@ -56,7 +56,7 @@
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|| defined(__PPC64__) \
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|| defined(__aarch64__) \
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|| (defined(_MIPS_SIM) && (_MIPS_SIM == _ABI64 || _MIPS_SIM == _ABIN32)) \
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|| defined(__s390__)
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|| defined(__s390__) || (defined(__riscv) && __riscv_xlen == 64)
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static inline void* do_mmap64(void *start, size_t length,
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int prot, int flags,
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