riscv64: lazy relocations do not work like sparc/m68k

ldso/ldso/riscv64/elfinterp.c

@@ -226,6 +226,8 @@ _dl_do_reloc (struct elf_resolve *tpnt, struct r_scope_elem *scope,
 	return 0;
 }
 
+#undef __RISCV_LAZY_RELOC_WORKS
+#ifdef __RISCV_LAZY_RELOC_WORKS
 static int
 _dl_do_lazy_reloc (struct elf_resolve *tpnt, struct r_scope_elem *scope,
 		   ELF_RELOC *rpnt, ElfW(Sym) *symtab, char *strtab)
@@ -250,7 +252,6 @@ _dl_do_lazy_reloc (struct elf_resolve *tpnt, struct r_scope_elem *scope,
 		case R_RISCV_NONE:
 			break;
 		case R_RISCV_JUMP_SLOT:
-			*reloc_addr += tpnt->loadaddr;
 			break;
 		default:
 			return -1; /*call _dl_exit(1) */
@@ -265,11 +266,17 @@ _dl_do_lazy_reloc (struct elf_resolve *tpnt, struct r_scope_elem *scope,
 
 	return 0;
 }
+#endif
 
 void _dl_parse_lazy_relocation_information(struct dyn_elf *rpnt,
 	unsigned long rel_addr, unsigned long rel_size)
 {
+#ifdef __RISCV_LAZY_RELOC_WORKS
 	(void)_dl_parse(rpnt->dyn, NULL, rel_addr, rel_size, _dl_do_lazy_reloc);
+#else
+	_dl_parse_relocation_information(rpnt, &_dl_loaded_modules->symbol_scope,
+									rel_addr, rel_size);
+#endif
 }
 
 int _dl_parse_relocation_information(struct dyn_elf *rpnt,

libc/misc/internals/__uClibc_main.c

@@ -500,6 +500,7 @@ void __uClibc_main(int (*main)(int, char **, char **), int argc,
 #endif
     }
 # endif
+#endif
 
     /* Note: It is possible that any initialization done above could
      * have resulted in errno being set nonzero, so set it to 0 before
@@ -511,7 +512,6 @@ void __uClibc_main(int (*main)(int, char **, char **), int argc,
     /* Set h_errno to 0 as well */
     if (likely(not_null_ptr(__h_errno_location)))
 	*(__h_errno_location()) = 0;
-#endif
 
 #if defined HAVE_CLEANUP_JMP_BUF && defined __UCLIBC_HAS_THREADS_NATIVE__
 	/* Memory for the cancellation buffer.  */

libc/sysdeps/linux/riscv64/crt1.S

@@ -45,6 +45,9 @@
 	.globl	_start
 	.type	_start,%function
 
+	.weak _init
+	.weak _fini
+
 _start:
 	call  .Lload_gp
 	mv    a5, a0  /* rtld_fini.  */
@@ -52,12 +55,9 @@ _start:
 	la   a0, main
 	REG_L a1, 0(sp)      /* argc.  */
 	addi  a2, sp, SZREG  /* argv.  */
-	/*
-	 * No support fo app_init/app_fini as we don't support shared libraries.
-	 */
-	mv    a3, zero
-	mv    a4, zero
 	andi  sp, sp, ALMASK /* Align stack. */
+	lla   a3, _init
+	lla   a4, _fini
 	mv    a6, sp  /* stack_end.  */
 
 	tail  __uClibc_main@plt