new file mode 100644
@@ -0,0 +1,56 @@
+/* Machine-specific declarations for dynamic linker interface. RISC-V version.
+ Copyright (C) 2005-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _LINK_H
+# error "Never include <bits/link.h> directly; use <link.h> instead."
+#endif
+
+typedef struct La_riscv_regs
+{
+ unsigned long int lr_reg[8]; /* a0 - a7 */
+ double lr_fpreg[8]; /* fa0 - fa7 */
+ unsigned long int lr_ra;
+ unsigned long int lr_sp;
+} La_riscv_regs;
+
+/* Return values for calls from PLT on RISC-V. */
+typedef struct La_riscv_retval
+{
+ unsigned long int lrv_a0;
+ unsigned long int lrv_a1;
+ double lrv_fa0;
+ double lrv_fa1;
+} La_riscv_retval;
+
+__BEGIN_DECLS
+
+extern ElfW (Addr) la_riscv_gnu_pltenter (ElfW (Sym) *__sym, unsigned int __ndx,
+ uintptr_t *__refcook,
+ uintptr_t *__defcook,
+ La_riscv_regs *__regs,
+ unsigned int *__flags,
+ const char *__symname,
+ long int *__framesizep);
+extern unsigned int la_riscv_gnu_pltexit (ElfW (Sym) *__sym, unsigned int __ndx,
+ uintptr_t *__refcook,
+ uintptr_t *__defcook,
+ const La_riscv_regs *__inregs,
+ La_riscv_retval *__outregs,
+ const char *__symname);
+
+__END_DECLS
new file mode 100644
@@ -0,0 +1,32 @@
+/* Facilitate pthread initialization using init_array.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+
+#include <sys/asm.h>
+
+#ifdef PREINIT_FUNCTION
+
+#if PREINIT_FUNCTION_WEAK
+# error PREINIT_FUNCTION_WEAK is unsupported
+#endif
+
+ .section .init_array, "aw"
+ .dc.a PREINIT_FUNCTION
+
+#endif
new file mode 100644
@@ -0,0 +1,308 @@
+/* Machine-dependent ELF dynamic relocation inline functions. RISC-V version.
+ Copyright (C) 2011-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef dl_machine_h
+#define dl_machine_h
+
+#define ELF_MACHINE_NAME "RISC-V"
+
+#include <entry.h>
+#include <elf/elf.h>
+#include <sys/asm.h>
+#include <dl-tls.h>
+
+#ifndef _RTLD_PROLOGUE
+# define _RTLD_PROLOGUE(entry) \
+ ".globl\t" __STRING (entry) "\n\t" \
+ ".type\t" __STRING (entry) ", @function\n" \
+ __STRING (entry) ":\n\t"
+#endif
+
+#ifndef _RTLD_EPILOGUE
+# define _RTLD_EPILOGUE(entry) \
+ ".size\t" __STRING (entry) ", . - " __STRING (entry) "\n\t"
+#endif
+
+#define ELF_MACHINE_JMP_SLOT R_RISCV_JUMP_SLOT
+
+#define elf_machine_type_class(type) \
+ ((ELF_RTYPE_CLASS_PLT * ((type) == ELF_MACHINE_JMP_SLOT \
+ || (__WORDSIZE == 32 && (type) == R_RISCV_TLS_DTPREL32) \
+ || (__WORDSIZE == 32 && (type) == R_RISCV_TLS_DTPMOD32) \
+ || (__WORDSIZE == 32 && (type) == R_RISCV_TLS_TPREL32) \
+ || (__WORDSIZE == 64 && (type) == R_RISCV_TLS_DTPREL64) \
+ || (__WORDSIZE == 64 && (type) == R_RISCV_TLS_DTPMOD64) \
+ || (__WORDSIZE == 64 && (type) == R_RISCV_TLS_TPREL64))) \
+ | (ELF_RTYPE_CLASS_COPY * ((type) == R_RISCV_COPY)))
+
+#define ELF_MACHINE_NO_REL 1
+#define ELF_MACHINE_NO_RELA 0
+
+/* Return nonzero iff ELF header is compatible with the running host. */
+static inline int __attribute_used__
+elf_machine_matches_host (const ElfW (Ehdr) *ehdr)
+{
+ return ehdr->e_machine == EM_RISCV;
+}
+
+/* Return the link-time address of _DYNAMIC. */
+static inline ElfW (Addr)
+elf_machine_dynamic (void)
+{
+ extern ElfW (Addr) _GLOBAL_OFFSET_TABLE_ __attribute__ ((visibility ("hidden")));
+ return _GLOBAL_OFFSET_TABLE_;
+}
+
+#define STRINGXP(X) __STRING (X)
+#define STRINGXV(X) STRINGV_ (X)
+#define STRINGV_(...) # __VA_ARGS__
+
+/* Return the run-time load address of the shared object. */
+static inline ElfW (Addr)
+elf_machine_load_address (void)
+{
+ ElfW (Addr) load_addr;
+ asm ("lla %0, _DYNAMIC" : "=r" (load_addr));
+ return load_addr - elf_machine_dynamic ();
+}
+
+/* Initial entry point code for the dynamic linker.
+ The C function `_dl_start' is the real entry point;
+ its return value is the user program's entry point. */
+
+#define RTLD_START asm (\
+ ".text\n\
+ " _RTLD_PROLOGUE (ENTRY_POINT) "\
+ mv a0, sp\n\
+ jal _dl_start\n\
+ # Stash user entry point in s0.\n\
+ mv s0, a0\n\
+ # See if we were run as a command with the executable file\n\
+ # name as an extra leading argument.\n\
+ lw a0, _dl_skip_args\n\
+ # Load the original argument count.\n\
+ " STRINGXP (REG_L) " a1, 0(sp)\n\
+ # Subtract _dl_skip_args from it.\n\
+ sub a1, a1, a0\n\
+ # Adjust the stack pointer to skip _dl_skip_args words.\n\
+ sll a0, a0, " STRINGXP (PTRLOG) "\n\
+ add sp, sp, a0\n\
+ # Save back the modified argument count.\n\
+ " STRINGXP (REG_S) " a1, 0(sp)\n\
+ # Call _dl_init (struct link_map *main_map, int argc, char **argv, char **env) \n\
+ " STRINGXP (REG_L) " a0, _rtld_local\n\
+ add a2, sp, " STRINGXP (SZREG) "\n\
+ sll a3, a1, " STRINGXP (PTRLOG) "\n\
+ add a3, a3, a2\n\
+ add a3, a3, " STRINGXP (SZREG) "\n\
+ # Call the function to run the initializers.\n\
+ jal _dl_init\n\
+ # Pass our finalizer function to _start.\n\
+ lla a0, _dl_fini\n\
+ # Jump to the user entry point.\n\
+ jr s0\n\
+ " _RTLD_EPILOGUE (ENTRY_POINT) "\
+ .previous" \
+);
+
+/* Names of the architecture-specific auditing callback functions. */
+#define ARCH_LA_PLTENTER riscv_gnu_pltenter
+#define ARCH_LA_PLTEXIT riscv_gnu_pltexit
+
+/* Bias .got.plt entry by the offset requested by the PLT header. */
+#define elf_machine_plt_value(map, reloc, value) (value)
+
+static inline ElfW (Addr)
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+ const ElfW (Sym) *refsym, const ElfW (Sym) *sym,
+ const ElfW (Rela) *reloc,
+ ElfW (Addr) *reloc_addr, ElfW (Addr) value)
+{
+ return *reloc_addr = value;
+}
+
+#endif /* !dl_machine_h */
+
+#ifdef RESOLVE_MAP
+
+/* Perform a relocation described by R_INFO at the location pointed to
+ by RELOC_ADDR. SYM is the relocation symbol specified by R_INFO and
+ MAP is the object containing the reloc. */
+
+auto inline void
+__attribute__ ((always_inline))
+elf_machine_rela (struct link_map *map, const ElfW (Rela) *reloc,
+ const ElfW (Sym) *sym, const struct r_found_version *version,
+ void *const reloc_addr, int skip_ifunc)
+{
+ ElfW (Addr) r_info = reloc->r_info;
+ const unsigned long int r_type = ELFW (R_TYPE) (r_info);
+ ElfW (Addr) *addr_field = (ElfW (Addr) *) reloc_addr;
+ const ElfW (Sym) *const __attribute__ ((unused)) refsym = sym;
+ struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
+ ElfW (Addr) value = 0;
+ if (sym_map != NULL)
+ value = sym_map->l_addr + sym->st_value + reloc->r_addend;
+
+ switch (r_type)
+ {
+#ifndef RTLD_BOOTSTRAP
+ case __WORDSIZE == 64 ? R_RISCV_TLS_DTPMOD64 : R_RISCV_TLS_DTPMOD32:
+ if (sym_map)
+ *addr_field = sym_map->l_tls_modid;
+ break;
+
+ case __WORDSIZE == 64 ? R_RISCV_TLS_DTPREL64 : R_RISCV_TLS_DTPREL32:
+ if (sym != NULL)
+ *addr_field = TLS_DTPREL_VALUE (sym) + reloc->r_addend;
+ break;
+
+ case __WORDSIZE == 64 ? R_RISCV_TLS_TPREL64 : R_RISCV_TLS_TPREL32:
+ if (sym != NULL)
+ {
+ CHECK_STATIC_TLS (map, sym_map);
+ *addr_field = TLS_TPREL_VALUE (sym_map, sym) + reloc->r_addend;
+ }
+ break;
+
+ case R_RISCV_COPY:
+ {
+ if (__glibc_unlikely (sym == NULL))
+ /* This can happen in trace mode if an object could not be
+ found. */
+ break;
+
+ /* Handle TLS copy relocations. */
+ if (__glibc_unlikely (ELFW (ST_TYPE) (sym->st_info) == STT_TLS))
+ {
+ /* There's nothing to do if the symbol is in .tbss. */
+ if (__glibc_likely (sym->st_value >= sym_map->l_tls_initimage_size))
+ break;
+ value += (ElfW (Addr)) sym_map->l_tls_initimage - sym_map->l_addr;
+ }
+
+ size_t size = sym->st_size;
+ if (__glibc_unlikely (sym->st_size != refsym->st_size))
+ {
+ const char *strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
+ if (sym->st_size > refsym->st_size)
+ size = refsym->st_size;
+ if (sym->st_size > refsym->st_size || GLRO (dl_verbose))
+ _dl_error_printf ("\
+ %s: Symbol `%s' has different size in shared object, consider re-linking\n",
+ rtld_progname ?: "<program name unknown>",
+ strtab + refsym->st_name);
+ }
+
+ memcpy (reloc_addr, (void *)value, size);
+ break;
+ }
+#endif
+
+#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
+ case R_RISCV_RELATIVE:
+ {
+# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
+ /* This is defined in rtld.c, but nowhere in the static libc.a;
+ make the reference weak so static programs can still link.
+ This declaration cannot be done when compiling rtld.c
+ (i.e. #ifdef RTLD_BOOTSTRAP) because rtld.c contains the
+ common defn for _dl_rtld_map, which is incompatible with a
+ weak decl in the same file. */
+# ifndef SHARED
+ weak_extern (GL (dl_rtld_map));
+# endif
+ if (map != &GL (dl_rtld_map)) /* Already done in rtld itself. */
+# endif
+ *addr_field = map->l_addr + reloc->r_addend;
+ break;
+ }
+#endif
+
+ case R_RISCV_JUMP_SLOT:
+ case __WORDSIZE == 64 ? R_RISCV_64 : R_RISCV_32:
+ *addr_field = value;
+ break;
+
+ case R_RISCV_NONE:
+ break;
+
+ default:
+ _dl_reloc_bad_type (map, r_type, 0);
+ break;
+ }
+}
+
+auto inline void
+__attribute__ ((always_inline))
+elf_machine_rela_relative (ElfW (Addr) l_addr, const ElfW (Rela) *reloc,
+ void *const reloc_addr)
+{
+ *(ElfW (Addr) *) reloc_addr = l_addr + reloc->r_addend;
+}
+
+auto inline void
+__attribute__ ((always_inline))
+elf_machine_lazy_rel (struct link_map *map, ElfW (Addr) l_addr,
+ const ElfW (Rela) *reloc, int skip_ifunc)
+{
+ ElfW (Addr) *const reloc_addr = (void *) (l_addr + reloc->r_offset);
+ const unsigned int r_type = ELFW (R_TYPE) (reloc->r_info);
+
+ /* Check for unexpected PLT reloc type. */
+ if (__glibc_likely (r_type == R_RISCV_JUMP_SLOT))
+ {
+ if (__glibc_unlikely (map->l_mach.plt == 0))
+ {
+ if (l_addr)
+ *reloc_addr += l_addr;
+ }
+ else
+ *reloc_addr = map->l_mach.plt;
+ }
+ else
+ _dl_reloc_bad_type (map, r_type, 1);
+}
+
+/* Set up the loaded object described by L so its stub function
+ will jump to the on-demand fixup code __dl_runtime_resolve. */
+
+auto inline int
+__attribute__ ((always_inline))
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+{
+#ifndef RTLD_BOOTSTRAP
+ /* If using PLTs, fill in the first two entries of .got.plt. */
+ if (l->l_info[DT_JMPREL])
+ {
+ extern void _dl_runtime_resolve (void) __attribute__ ((visibility ("hidden")));
+ ElfW (Addr) *gotplt = (ElfW (Addr) *) D_PTR (l, l_info[DT_PLTGOT]);
+ /* If a library is prelinked but we have to relocate anyway,
+ we have to be able to undo the prelinking of .got.plt.
+ The prelinker saved the address of .plt for us here. */
+ if (gotplt[1])
+ l->l_mach.plt = gotplt[1] + l->l_addr;
+ gotplt[0] = (ElfW (Addr)) &_dl_runtime_resolve;
+ gotplt[1] = (ElfW (Addr)) l;
+ }
+#endif
+
+ return lazy;
+}
+
+#endif /* RESOLVE_MAP */
new file mode 100644
@@ -0,0 +1,47 @@
+/* Run-time dynamic linker data structures for loaded ELF shared objects.
+ Copyright (C) 2011-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _RISCV_LDSODEFS_H
+#define _RISCV_LDSODEFS_H 1
+
+#include <elf.h>
+
+struct La_riscv_regs;
+struct La_riscv_retval;
+
+#define ARCH_PLTENTER_MEMBERS \
+ ElfW (Addr) (*riscv_gnu_pltenter) (ElfW (Sym) *, unsigned int, \
+ uintptr_t *, uintptr_t *, \
+ const struct La_riscv_regs *, \
+ unsigned int *, const char *name, \
+ long int *framesizep);
+
+#define ARCH_PLTEXIT_MEMBERS \
+ unsigned int (*riscv_gnu_pltexit) (ElfW (Sym) *, unsigned int, \
+ uintptr_t *, uintptr_t *, \
+ const struct La_riscv_regs *, \
+ struct La_riscv_retval *, \
+ const char *);
+
+/* The RISC-V ABI specifies that the dynamic section has to be read-only. */
+
+#define DL_RO_DYN_SECTION 1
+
+#include_next <ldsodefs.h>
+
+#endif
new file mode 100644
@@ -0,0 +1,4 @@
+struct link_map_machine
+ {
+ ElfW (Addr) plt; /* Address of .plt */
+ };
new file mode 100644
@@ -0,0 +1,51 @@
+/* Override generic sotruss-lib.c to define actual functions for RISC-V.
+ Copyright (C) 2012-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define HAVE_ARCH_PLTENTER
+#define HAVE_ARCH_PLTEXIT
+
+#include <elf/sotruss-lib.c>
+
+ElfW (Addr)
+la_riscv_gnu_pltenter (ElfW (Sym) *sym __attribute__ ((unused)),
+ unsigned int ndx __attribute__ ((unused)),
+ uintptr_t *refcook, uintptr_t *defcook,
+ La_riscv_regs *regs, unsigned int *flags,
+ const char *symname, long int *framesizep)
+{
+ print_enter (refcook, defcook, symname,
+ regs->lr_reg[0], regs->lr_reg[1], regs->lr_reg[2],
+ *flags);
+
+ /* No need to copy anything, we will not need the parameters in any case. */
+ *framesizep = 0;
+
+ return sym->st_value;
+}
+
+unsigned int
+la_riscv_gnu_pltexit (ElfW (Sym) *sym, unsigned int ndx, uintptr_t *refcook,
+ uintptr_t *defcook,
+ const struct La_riscv_regs *inregs,
+ struct La_riscv_retval *outregs,
+ const char *symname)
+{
+ print_exit (refcook, defcook, symname, outregs->lrv_a0);
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,80 @@
+/* Startup code compliant to the ELF RISC-V ABI.
+ Copyright (C) 1995-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The GNU Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define __ASSEMBLY__ 1
+#include <entry.h>
+#include <sysdep.h>
+#include <sys/asm.h>
+
+/* The entry point's job is to call __libc_start_main. Per the ABI,
+ a0 contains the address of a function to be passed to atexit.
+ __libc_start_main wants this in a5. */
+
+ENTRY (ENTRY_POINT)
+ call .Lload_gp
+ mv a5, a0 /* rtld_fini */
+ lla a0, main
+ REG_L a1, 0(sp) /* argc */
+ addi a2, sp, SZREG /* argv */
+ andi sp, sp, ALMASK /* Align stack. */
+ lla a3, __libc_csu_init
+ lla a4, __libc_csu_fini
+ mv a6, sp /* stack_end */
+
+ tail __libc_start_main@plt
+END (ENTRY_POINT)
+
+/* Dynamic links need the global pointer to be initialized prior to calling
+ any shared library's initializers, so we use preinit_array to load it.
+ This doesn't cut it for static links, though, since the global pointer
+ needs to be initialized before calling __libc_start_main in that case.
+ So we redundantly initialize it at the beginning of _start. */
+
+.Lload_gp:
+.option push
+.option norelax
+ lla gp, __global_pointer$
+.option pop
+ ret
+
+ .section .preinit_array,"aw"
+ .dc.a .Lload_gp
+
+/* Define a symbol for the first piece of initialized data. */
+ .data
+ .globl __data_start
+__data_start:
+ .weak data_start
+ data_start = __data_start
new file mode 100644
@@ -0,0 +1,23 @@
+/* Definitions for testing PLT entry/exit auditing. RISC-V version.
+ Copyright (C) 2005-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define pltenter la_riscv_gnu_pltenter
+#define pltexit la_riscv_gnu_pltexit
+#define La_regs La_riscv_regs
+#define La_retval La_riscv_retval
+#define int_retval lrv_a0