diff options
| -rw-r--r-- | ChangeLog | 16 | ||||
| -rw-r--r-- | sysdeps/riscv/__longjmp.S | 57 | ||||
| -rw-r--r-- | sysdeps/riscv/backtrace.c | 1 | ||||
| -rw-r--r-- | sysdeps/riscv/bits/endian.h | 5 | ||||
| -rw-r--r-- | sysdeps/riscv/bits/link.h | 56 | ||||
| -rw-r--r-- | sysdeps/riscv/bits/setjmp.h | 39 | ||||
| -rw-r--r-- | sysdeps/riscv/bits/wordsize.h | 29 | ||||
| -rw-r--r-- | sysdeps/riscv/bsd-_setjmp.c | 1 | ||||
| -rw-r--r-- | sysdeps/riscv/bsd-setjmp.c | 1 | ||||
| -rw-r--r-- | sysdeps/riscv/dl-machine.h | 323 | ||||
| -rw-r--r-- | sysdeps/riscv/dl-trampoline.S | 90 | ||||
| -rw-r--r-- | sysdeps/riscv/gccframe.h | 21 | ||||
| -rw-r--r-- | sysdeps/riscv/jmpbuf-offsets.h | 23 | ||||
| -rw-r--r-- | sysdeps/riscv/jmpbuf-unwind.h | 46 | ||||
| -rw-r--r-- | sysdeps/riscv/ldsodefs.h | 47 | ||||
| -rw-r--r-- | sysdeps/riscv/linkmap.h | 4 | ||||
| -rw-r--r-- | sysdeps/riscv/machine-gmon.h | 37 | ||||
| -rw-r--r-- | sysdeps/riscv/memusage.h | 21 | ||||
| -rw-r--r-- | sysdeps/riscv/setjmp.S | 74 | ||||
| -rw-r--r-- | sysdeps/riscv/sotruss-lib.c | 51 | ||||
| -rw-r--r-- | sysdeps/riscv/start.S | 81 | ||||
| -rw-r--r-- | sysdeps/riscv/sys/asm.h | 63 | ||||
| -rw-r--r-- | sysdeps/riscv/tls-macros.h | 61 | ||||
| -rw-r--r-- | sysdeps/riscv/tst-audit.h | 23 |
24 files changed, 1170 insertions, 0 deletions
@@ -6,6 +6,22 @@ * config.h.in: Regenerate. * manual/platform.texi: Add RISC-V documenation for __riscv_flush_icache. + * sysdeps/riscv/__longjmp.S: New file. + * sysdeps/riscv/backtrace.c: Likewise. + * sysdeps/riscv/bits/endian.h: Likewise. + * sysdeps/riscv/bits/setjmp.h: Likewise. + * sysdeps/riscv/bits/wordsize.h: Likewise. + * sysdeps/riscv/bsd-_setjmp.c: Likewise. + * sysdeps/riscv/bsd-setjmp.c: Likewise. + * sysdeps/riscv/dl-trampoline.S: Likewise. + * sysdeps/riscv/gccframe.h: Likewise. + * sysdeps/riscv/jmpbuf-offsets.h: Likewise. + * sysdeps/riscv/jmpbuf-unwind.h: Likewise. + * sysdeps/riscv/machine-gmon.h: Likewise. + * sysdeps/riscv/memusage.h: Likewise. + * sysdeps/riscv/setjmp.S: Likewise. + * sysdeps/riscv/sys/asm.h: Likewise. + * sysdeps/riscv/tls-macros.h: Likewise. 2018-01-29 Florian Weimer <fweimer@redhat.com> diff --git a/sysdeps/riscv/__longjmp.S b/sysdeps/riscv/__longjmp.S new file mode 100644 index 0000000000..0b9e5e10e2 --- /dev/null +++ b/sysdeps/riscv/__longjmp.S @@ -0,0 +1,57 @@ +/* longjmp, RISC-V version. + Copyright (C) 1996-2018 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 <sysdep.h> +#include <sys/asm.h> + +ENTRY (__longjmp) + REG_L ra, 0*SZREG(a0) + REG_L s0, 1*SZREG(a0) + REG_L s1, 2*SZREG(a0) + REG_L s2, 3*SZREG(a0) + REG_L s3, 4*SZREG(a0) + REG_L s4, 5*SZREG(a0) + REG_L s5, 6*SZREG(a0) + REG_L s6, 7*SZREG(a0) + REG_L s7, 8*SZREG(a0) + REG_L s8, 9*SZREG(a0) + REG_L s9, 10*SZREG(a0) + REG_L s10,11*SZREG(a0) + REG_L s11,12*SZREG(a0) + REG_L sp, 13*SZREG(a0) + +#ifndef __riscv_float_abi_soft + FREG_L fs0, 14*SZREG+ 0*SZFREG(a0) + FREG_L fs1, 14*SZREG+ 1*SZFREG(a0) + FREG_L fs2, 14*SZREG+ 2*SZFREG(a0) + FREG_L fs3, 14*SZREG+ 3*SZFREG(a0) + FREG_L fs4, 14*SZREG+ 4*SZFREG(a0) + FREG_L fs5, 14*SZREG+ 5*SZFREG(a0) + FREG_L fs6, 14*SZREG+ 6*SZFREG(a0) + FREG_L fs7, 14*SZREG+ 7*SZFREG(a0) + FREG_L fs8, 14*SZREG+ 8*SZFREG(a0) + FREG_L fs9, 14*SZREG+ 9*SZFREG(a0) + FREG_L fs10,14*SZREG+10*SZFREG(a0) + FREG_L fs11,14*SZREG+11*SZFREG(a0) +#endif + + seqz a0, a1 + add a0, a0, a1 # a0 = (a1 == 0) ? 1 : a1 + ret + +END (__longjmp) diff --git a/sysdeps/riscv/backtrace.c b/sysdeps/riscv/backtrace.c new file mode 100644 index 0000000000..27ce597b39 --- /dev/null +++ b/sysdeps/riscv/backtrace.c @@ -0,0 +1 @@ +#include <sysdeps/x86_64/backtrace.c> diff --git a/sysdeps/riscv/bits/endian.h b/sysdeps/riscv/bits/endian.h new file mode 100644 index 0000000000..4aaf559d4f --- /dev/null +++ b/sysdeps/riscv/bits/endian.h @@ -0,0 +1,5 @@ +#ifndef _ENDIAN_H +# error "Never use <bits/endian.h> directly; include <endian.h> instead." +#endif + +#define __BYTE_ORDER __LITTLE_ENDIAN diff --git a/sysdeps/riscv/bits/link.h b/sysdeps/riscv/bits/link.h new file mode 100644 index 0000000000..cedc4ad9b2 --- /dev/null +++ b/sysdeps/riscv/bits/link.h @@ -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 diff --git a/sysdeps/riscv/bits/setjmp.h b/sysdeps/riscv/bits/setjmp.h new file mode 100644 index 0000000000..988ad6b1d6 --- /dev/null +++ b/sysdeps/riscv/bits/setjmp.h @@ -0,0 +1,39 @@ +/* Define the machine-dependent type `jmp_buf'. 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 _RISCV_BITS_SETJMP_H +#define _RISCV_BITS_SETJMP_H + +typedef struct __jmp_buf_internal_tag + { + /* Program counter. */ + long int __pc; + /* Callee-saved registers. */ + long int __regs[12]; + /* Stack pointer. */ + long int __sp; + + /* Callee-saved floating point registers. */ +#if defined __riscv_float_abi_double + double __fpregs[12]; +#elif !defined __riscv_float_abi_soft +# error unsupported FLEN +#endif + } __jmp_buf[1]; + +#endif /* _RISCV_BITS_SETJMP_H */ diff --git a/sysdeps/riscv/bits/wordsize.h b/sysdeps/riscv/bits/wordsize.h new file mode 100644 index 0000000000..67a16ba622 --- /dev/null +++ b/sysdeps/riscv/bits/wordsize.h @@ -0,0 +1,29 @@ +/* Determine the wordsize from the preprocessor defines. RISC-V version. + Copyright (C) 2002-2018 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/>. */ + +#if __riscv_xlen == (__SIZEOF_POINTER__ * 8) +# define __WORDSIZE __riscv_xlen +#else +# error unsupported ABI +#endif + +#if __riscv_xlen == 64 +# define __WORDSIZE_TIME64_COMPAT32 1 +#else +# error "rv32i-based targets are not supported" +#endif diff --git a/sysdeps/riscv/bsd-_setjmp.c b/sysdeps/riscv/bsd-_setjmp.c new file mode 100644 index 0000000000..0d413101ce --- /dev/null +++ b/sysdeps/riscv/bsd-_setjmp.c @@ -0,0 +1 @@ +/* _setjmp is implemented in setjmp.S */ diff --git a/sysdeps/riscv/bsd-setjmp.c b/sysdeps/riscv/bsd-setjmp.c new file mode 100644 index 0000000000..ee7c5e3437 --- /dev/null +++ b/sysdeps/riscv/bsd-setjmp.c @@ -0,0 +1 @@ +/* setjmp is implemented in setjmp.S */ diff --git a/sysdeps/riscv/dl-machine.h b/sysdeps/riscv/dl-machine.h new file mode 100644 index 0000000000..9e3c2925f0 --- /dev/null +++ b/sysdeps/riscv/dl-machine.h @@ -0,0 +1,323 @@ +/* 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) +{ + /* We can only run RISC-V binaries. */ + if (ehdr->e_machine != EM_RISCV) + return 0; + + /* Ensure the library's floating-point ABI matches that of the running + system. For now we don't support mixing XLEN, so there's no need (or way) + to check it matches. */ +#ifdef __riscv_float_abi_double + if ((ehdr->e_flags & EF_RISCV_FLOAT_ABI) != EF_RISCV_FLOAT_ABI_DOUBLE) + return 0; +#else + if ((ehdr->e_flags & EF_RISCV_FLOAT_ABI) != EF_RISCV_FLOAT_ABI_SOFT) + return 0; +#endif + + return 1; +} + +/* 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 */ diff --git a/sysdeps/riscv/dl-trampoline.S b/sysdeps/riscv/dl-trampoline.S new file mode 100644 index 0000000000..cda3be9f4e --- /dev/null +++ b/sysdeps/riscv/dl-trampoline.S @@ -0,0 +1,90 @@ +/* RISC-V PLT trampoline + 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 <sysdep.h> +#include <sys/asm.h> + +/* Assembler veneer called from the PLT header code for lazy loading. + The PLT header passes its own args in t0-t2. */ + +#ifdef __riscv_float_abi_soft +# define FRAME_SIZE (-((-10 * SZREG) & ALMASK)) +#else +# define FRAME_SIZE (-((-10 * SZREG - 8 * SZFREG) & ALMASK)) +#endif + +ENTRY (_dl_runtime_resolve) + # Save arguments to stack. + addi sp, sp, -FRAME_SIZE + REG_S ra, 9*SZREG(sp) + REG_S a0, 1*SZREG(sp) + REG_S a1, 2*SZREG(sp) + REG_S a2, 3*SZREG(sp) + REG_S a3, 4*SZREG(sp) + REG_S a4, 5*SZREG(sp) + REG_S a5, 6*SZREG(sp) + REG_S a6, 7*SZREG(sp) + REG_S a7, 8*SZREG(sp) + +#ifndef __riscv_float_abi_soft + FREG_S fa0, (10*SZREG + 0*SZFREG)(sp) + FREG_S fa1, (10*SZREG + 1*SZFREG)(sp) + FREG_S fa2, (10*SZREG + 2*SZFREG)(sp) + FREG_S fa3, (10*SZREG + 3*SZFREG)(sp) + FREG_S fa4, (10*SZREG + 4*SZFREG)(sp) + FREG_S fa5, (10*SZREG + 5*SZFREG)(sp) + FREG_S fa6, (10*SZREG + 6*SZFREG)(sp) + FREG_S fa7, (10*SZREG + 7*SZFREG)(sp) +#endif + + # Update .got.plt and obtain runtime address of callee. + slli a1, t1, 1 + mv a0, t0 # link map + add a1, a1, t1 # reloc offset (== thrice the .got.plt offset) + la a2, _dl_fixup + jalr a2 + mv t1, a0 + + # Restore arguments from stack. + REG_L ra, 9*SZREG(sp) + REG_L a0, 1*SZREG(sp) + REG_L a1, 2*SZREG(sp) + REG_L a2, 3*SZREG(sp) + REG_L a3, 4*SZREG(sp) + REG_L a4, 5*SZREG(sp) + REG_L a5, 6*SZREG(sp) + REG_L a6, 7*SZREG(sp) + REG_L a7, 8*SZREG(sp) + +#ifndef __riscv_float_abi_soft + FREG_L fa0, (10*SZREG + 0*SZFREG)(sp) + FREG_L fa1, (10*SZREG + 1*SZFREG)(sp) + FREG_L fa2, (10*SZREG + 2*SZFREG)(sp) + FREG_L fa3, (10*SZREG + 3*SZFREG)(sp) + FREG_L fa4, (10*SZREG + 4*SZFREG)(sp) + FREG_L fa5, (10*SZREG + 5*SZFREG)(sp) + FREG_L fa6, (10*SZREG + 6*SZFREG)(sp) + FREG_L fa7, (10*SZREG + 7*SZFREG)(sp) +#endif + + addi sp, sp, FRAME_SIZE + + # Invoke the callee. + jr t1 +END (_dl_runtime_resolve) diff --git a/sysdeps/riscv/gccframe.h b/sysdeps/riscv/gccframe.h new file mode 100644 index 0000000000..3dc62863af --- /dev/null +++ b/sysdeps/riscv/gccframe.h @@ -0,0 +1,21 @@ +/* Definition of object in frame unwind info. RISC-V version. + Copyright (C) 2001-2018 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 FIRST_PSEUDO_REGISTER 66 + +#include <sysdeps/generic/gccframe.h> diff --git a/sysdeps/riscv/jmpbuf-offsets.h b/sysdeps/riscv/jmpbuf-offsets.h new file mode 100644 index 0000000000..fff4d0d9c6 --- /dev/null +++ b/sysdeps/riscv/jmpbuf-offsets.h @@ -0,0 +1,23 @@ +/* Private macros for accessing __jmp_buf contents. RISC-V version. + Copyright (C) 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 <jmpbuf-unwind.h> + +/* Helper for generic ____longjmp_chk(). */ +#define JB_FRAME_ADDRESS(buf) \ + ((void *) _jmpbuf_sp (buf)) diff --git a/sysdeps/riscv/jmpbuf-unwind.h b/sysdeps/riscv/jmpbuf-unwind.h new file mode 100644 index 0000000000..2e5f37f102 --- /dev/null +++ b/sysdeps/riscv/jmpbuf-unwind.h @@ -0,0 +1,46 @@ +/* Examine __jmp_buf for unwinding frames. RISC-V version. + Copyright (C) 2003-2018 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 <setjmp.h> +#include <stdint.h> +#include <unwind.h> +#include <sysdep.h> + +/* 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_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ + _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj) + +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; +} + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj)) + +/* We use the normal longjmp for unwinding. */ +#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) diff --git a/sysdeps/riscv/ldsodefs.h b/sysdeps/riscv/ldsodefs.h new file mode 100644 index 0000000000..c032b73a9c --- /dev/null +++ b/sysdeps/riscv/ldsodefs.h @@ -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 diff --git a/sysdeps/riscv/linkmap.h b/sysdeps/riscv/linkmap.h new file mode 100644 index 0000000000..ac170bb342 --- /dev/null +++ b/sysdeps/riscv/linkmap.h @@ -0,0 +1,4 @@ +struct link_map_machine + { + ElfW(Addr) plt; /* Address of .plt. */ + }; diff --git a/sysdeps/riscv/machine-gmon.h b/sysdeps/riscv/machine-gmon.h new file mode 100644 index 0000000000..a50d50a2e1 --- /dev/null +++ b/sysdeps/riscv/machine-gmon.h @@ -0,0 +1,37 @@ +/* RISC-V definitions for profiling support. + Copyright (C) 1996-2018 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/>. */ + +/* Accept 'frompc' address as argument from the function that calls + _mcount for profiling. Use __builtin_return_address (0) + for the 'selfpc' address. */ + +#include <sysdep.h> + +static void mcount_internal (unsigned long int frompc, + unsigned long int selfpc); + +#define _MCOUNT_DECL(frompc, selfpc) \ +static inline void mcount_internal (unsigned long int frompc, \ +unsigned long int selfpc) + +#define MCOUNT \ +void _mcount (void *frompc) \ +{ \ + mcount_internal ((unsigned long int) frompc, \ + (unsigned long int) RETURN_ADDRESS (0)); \ +} diff --git a/sysdeps/riscv/memusage.h b/sysdeps/riscv/memusage.h new file mode 100644 index 0000000000..a29e0d1e03 --- /dev/null +++ b/sysdeps/riscv/memusage.h @@ -0,0 +1,21 @@ +/* Machine-specific definitions for memory usage profiling, RISC-V version. + Copyright (C) 2000-2018 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 GETSP() ({ register uintptr_t stack_ptr asm ("sp"); stack_ptr; }) + +#include <sysdeps/generic/memusage.h> diff --git a/sysdeps/riscv/setjmp.S b/sysdeps/riscv/setjmp.S new file mode 100644 index 0000000000..cfbd276fc3 --- /dev/null +++ b/sysdeps/riscv/setjmp.S @@ -0,0 +1,74 @@ +/* setjmp for RISC-V. + Copyright (C) 1996-2018 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 <sysdep.h> +#include <sys/asm.h> + +ENTRY (_setjmp) + li a1, 0 + j __sigsetjmp +END (_setjmp) +ENTRY (setjmp) + li a1, 1 + /* Fallthrough */ +END (setjmp) +ENTRY (__sigsetjmp) + REG_S ra, 0*SZREG(a0) + REG_S s0, 1*SZREG(a0) + REG_S s1, 2*SZREG(a0) + REG_S s2, 3*SZREG(a0) + REG_S s3, 4*SZREG(a0) + REG_S s4, 5*SZREG(a0) + REG_S s5, 6*SZREG(a0) + REG_S s6, 7*SZREG(a0) + REG_S s7, 8*SZREG(a0) + REG_S s8, 9*SZREG(a0) + REG_S s9, 10*SZREG(a0) + REG_S s10,11*SZREG(a0) + REG_S s11,12*SZREG(a0) + REG_S sp, 13*SZREG(a0) + +#ifndef __riscv_float_abi_soft + FREG_S fs0, 14*SZREG+ 0*SZFREG(a0) + FREG_S fs1, 14*SZREG+ 1*SZFREG(a0) + FREG_S fs2, 14*SZREG+ 2*SZFREG(a0) + FREG_S fs3, 14*SZREG+ 3*SZFREG(a0) + FREG_S fs4, 14*SZREG+ 4*SZFREG(a0) + FREG_S fs5, 14*SZREG+ 5*SZFREG(a0) + FREG_S fs6, 14*SZREG+ 6*SZFREG(a0) + FREG_S fs7, 14*SZREG+ 7*SZFREG(a0) + FREG_S fs8, 14*SZREG+ 8*SZFREG(a0) + FREG_S fs9, 14*SZREG+ 9*SZFREG(a0) + FREG_S fs10,14*SZREG+10*SZFREG(a0) + FREG_S fs11,14*SZREG+11*SZFREG(a0) +#endif + +#if !IS_IN (libc) && IS_IN (rtld) + /* In ld.so we never save the signal mask. */ + li a0, 0 + ret +#else + /* Make a tail call to __sigjmp_save; it takes the same args. */ + j __sigjmp_save +#endif + + +END (__sigsetjmp) + +hidden_def (__sigsetjmp) +weak_alias (_setjmp, __GI__setjmp) diff --git a/sysdeps/riscv/sotruss-lib.c b/sysdeps/riscv/sotruss-lib.c new file mode 100644 index 0000000000..f35b554db5 --- /dev/null +++ b/sysdeps/riscv/sotruss-lib.c @@ -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; +} diff --git a/sysdeps/riscv/start.S b/sysdeps/riscv/start.S new file mode 100644 index 0000000000..4635ddb5eb --- /dev/null +++ b/sysdeps/riscv/start.S @@ -0,0 +1,81 @@ +/* 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. */ + /* main may be in a shared library. */ + la 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 diff --git a/sysdeps/riscv/sys/asm.h b/sysdeps/riscv/sys/asm.h new file mode 100644 index 0000000000..ddb84b683b --- /dev/null +++ b/sysdeps/riscv/sys/asm.h @@ -0,0 +1,63 @@ +/* Miscellaneous macros. + Copyright (C) 2000-2018 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 _SYS_ASM_H +#define _SYS_ASM_H + +/* Macros to handle different pointer/register sizes for 32/64-bit code. */ +#if __riscv_xlen == 64 +# define PTRLOG 3 +# define SZREG 8 +# define REG_S sd +# define REG_L ld +#elif __riscv_xlen == 32 +# error "rv32i-based targets are not supported" +#else +# error __riscv_xlen must equal 32 or 64 +#endif + +#if !defined __riscv_float_abi_soft +/* For ABI uniformity, reserve 8 bytes for floats, even if double-precision + floating-point is not supported in hardware. */ +# if defined __riscv_float_abi_double +# define FREG_L fld +# define FREG_S fsd +# define SZFREG 8 +# else +# error unsupported FLEN +# endif +#endif + +/* Declare leaf routine. */ +#define LEAF(symbol) \ + .globl symbol; \ + .align 2; \ + .type symbol,@function; \ +symbol: \ + cfi_startproc; + +/* Mark end of function. */ +#undef END +#define END(function) \ + cfi_endproc; \ + .size function,.-function + +/* Stack alignment. */ +#define ALMASK ~15 + +#endif /* sys/asm.h */ diff --git a/sysdeps/riscv/tls-macros.h b/sysdeps/riscv/tls-macros.h new file mode 100644 index 0000000000..5433ed9d16 --- /dev/null +++ b/sysdeps/riscv/tls-macros.h @@ -0,0 +1,61 @@ +/* Macros to support TLS testing in times of missing compiler support. + 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/cdefs.h> +#include <sys/asm.h> +#include <sysdep.h> +#include "dl-tls.h" + +#define LOAD_GP \ + ".option push\n\t" \ + ".option norelax\n\t" \ + "la gp, __global_pointer$\n\t" \ + ".option pop\n\t" + +#define UNLOAD_GP + +#define TLS_GD(x) \ + ({ void *__result; \ + asm (LOAD_GP \ + "la.tls.gd %0, " #x "\n\t" \ + UNLOAD_GP \ + : "=r" (__result)); \ + __tls_get_addr (__result); }) + +#define TLS_LD(x) TLS_GD(x) + +#define TLS_IE(x) \ + ({ void *__result; \ + asm (LOAD_GP \ + "la.tls.ie %0, " #x "\n\t" \ + "add %0, %0, tp\n\t" \ + UNLOAD_GP \ + : "=r" (__result)); \ + __result; }) + +#define TLS_LE(x) \ + ({ void *__result; \ + asm (LOAD_GP \ + "lui %0, %%tprel_hi(" #x ")\n\t" \ + "add %0, %0, tp, %%tprel_add(" #x ")\n\t" \ + "addi %0, %0, %%tprel_lo(" #x ")\n\t" \ + UNLOAD_GP \ + : "=r" (__result)); \ + __result; }) diff --git a/sysdeps/riscv/tst-audit.h b/sysdeps/riscv/tst-audit.h new file mode 100644 index 0000000000..7cce56d104 --- /dev/null +++ b/sysdeps/riscv/tst-audit.h @@ -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 |