Message ID | 20220719012056.1461897-4-caiyinyu@loongson.cn |
---|---|
State | New |
Headers | show |
Series | [v7,01/13] LoongArch: Add LoongArch entries to config.h.in | expand |
LGTM, thanks. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> On 18/07/22 22:20, caiyinyu wrote: > --- > sysdeps/loongarch/__longjmp.S | 50 +++++ > sysdeps/loongarch/bits/endianness.h | 11 ++ > sysdeps/loongarch/bits/link.h | 58 ++++++ > sysdeps/loongarch/bits/setjmp.h | 39 ++++ > sysdeps/loongarch/bsd-_setjmp.c | 1 + > sysdeps/loongarch/bsd-setjmp.c | 1 + > sysdeps/loongarch/dl-machine.h | 288 ++++++++++++++++++++++++++++ > sysdeps/loongarch/dl-trampoline.S | 83 ++++++++ > sysdeps/loongarch/jmpbuf-offsets.h | 22 +++ > sysdeps/loongarch/jmpbuf-unwind.h | 45 +++++ > sysdeps/loongarch/ldsodefs.h | 41 ++++ > sysdeps/loongarch/linkmap.h | 22 +++ > sysdeps/loongarch/machine-gmon.h | 37 ++++ > sysdeps/loongarch/setjmp.S | 64 +++++++ > sysdeps/loongarch/sotruss-lib.c | 50 +++++ > sysdeps/loongarch/start.S | 66 +++++++ > sysdeps/loongarch/sys/asm.h | 59 ++++++ > sysdeps/loongarch/tst-audit.h | 23 +++ > 18 files changed, 960 insertions(+) > create mode 100644 sysdeps/loongarch/__longjmp.S > create mode 100644 sysdeps/loongarch/bits/endianness.h > create mode 100644 sysdeps/loongarch/bits/link.h > create mode 100644 sysdeps/loongarch/bits/setjmp.h > create mode 100644 sysdeps/loongarch/bsd-_setjmp.c > create mode 100644 sysdeps/loongarch/bsd-setjmp.c > create mode 100644 sysdeps/loongarch/dl-machine.h > create mode 100644 sysdeps/loongarch/dl-trampoline.S > create mode 100644 sysdeps/loongarch/jmpbuf-offsets.h > create mode 100644 sysdeps/loongarch/jmpbuf-unwind.h > create mode 100644 sysdeps/loongarch/ldsodefs.h > create mode 100644 sysdeps/loongarch/linkmap.h > create mode 100644 sysdeps/loongarch/machine-gmon.h > create mode 100644 sysdeps/loongarch/setjmp.S > create mode 100644 sysdeps/loongarch/sotruss-lib.c > create mode 100644 sysdeps/loongarch/start.S > create mode 100644 sysdeps/loongarch/sys/asm.h > create mode 100644 sysdeps/loongarch/tst-audit.h > > diff --git a/sysdeps/loongarch/__longjmp.S b/sysdeps/loongarch/__longjmp.S > new file mode 100644 > index 0000000000..37e7384413 > --- /dev/null > +++ b/sysdeps/loongarch/__longjmp.S > @@ -0,0 +1,50 @@ > +/* longjmp. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#include <sysdep.h> > +#include <sys/asm.h> > + > +ENTRY (__longjmp) > + REG_L ra, a0, 0*SZREG > + REG_L sp, a0, 1*SZREG > + REG_L x, a0, 2*SZREG > + REG_L fp, a0, 3*SZREG > + REG_L s0, a0, 4*SZREG > + REG_L s1, a0, 5*SZREG > + REG_L s2, a0, 6*SZREG > + REG_L s3, a0, 7*SZREG > + REG_L s4, a0, 8*SZREG > + REG_L s5, a0, 9*SZREG > + REG_L s6, a0, 10*SZREG > + REG_L s7, a0, 11*SZREG > + REG_L s8, a0, 12*SZREG > + > + FREG_L $f24, a0, 13*SZREG + 0*SZFREG > + FREG_L $f25, a0, 13*SZREG + 1*SZFREG > + FREG_L $f26, a0, 13*SZREG + 2*SZFREG > + FREG_L $f27, a0, 13*SZREG + 3*SZFREG > + FREG_L $f28, a0, 13*SZREG + 4*SZFREG > + FREG_L $f29, a0, 13*SZREG + 5*SZFREG > + FREG_L $f30, a0, 13*SZREG + 6*SZFREG > + FREG_L $f31, a0, 13*SZREG + 7*SZFREG > + > + sltui a0,a1,1 > + ADD a0, a0, a1 # a0 = (a1 == 0) ? 1 : a1 > + jirl zero,ra,0 > + > +END (__longjmp) > diff --git a/sysdeps/loongarch/bits/endianness.h b/sysdeps/loongarch/bits/endianness.h > new file mode 100644 > index 0000000000..7290be7b18 > --- /dev/null > +++ b/sysdeps/loongarch/bits/endianness.h > @@ -0,0 +1,11 @@ > +#ifndef _BITS_ENDIANNESS_H > +#define _BITS_ENDIANNESS_H 1 > + > +#ifndef _BITS_ENDIAN_H > +#error "Never use <bits/endianness.h> directly; include <endian.h> instead." > +#endif > + > +/* LoongArch is little-endian. */ > +#define __BYTE_ORDER __LITTLE_ENDIAN > + > +#endif /* bits/endianness.h */ > diff --git a/sysdeps/loongarch/bits/link.h b/sysdeps/loongarch/bits/link.h > new file mode 100644 > index 0000000000..05c91575e9 > --- /dev/null > +++ b/sysdeps/loongarch/bits/link.h > @@ -0,0 +1,58 @@ > +/* Machine-specific declarations for dynamic linker interface. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#ifndef _LINK_H > +#error "Never include <bits/link.h> directly; use <link.h> instead." > +#endif > + > +typedef struct La_loongarch_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_loongarch_regs; > + > +/* Return values for calls from PLT on LoongArch. */ > +typedef struct La_loongarch_retval > +{ > + unsigned long int lrv_a0; > + unsigned long int lrv_a1; > + double lrv_fa0; > + double lrv_fa1; > +} La_loongarch_retval; > + > +__BEGIN_DECLS > + > +extern ElfW (Addr) la_loongarch_gnu_pltenter (ElfW (Sym) *__sym, > + unsigned int __ndx, > + uintptr_t *__refcook, > + uintptr_t *__defcook, > + La_loongarch_regs *__regs, > + unsigned int *__flags, > + const char *__symname, > + long int *__framesizep); > +extern unsigned int la_loongarch_gnu_pltexit (ElfW (Sym) *__sym, > + unsigned int __ndx, > + uintptr_t *__refcook, > + uintptr_t *__defcook, > + const La_loongarch_regs *__inregs, > + La_loongarch_retval *__outregs, > + const char *__symname); > + > +__END_DECLS > diff --git a/sysdeps/loongarch/bits/setjmp.h b/sysdeps/loongarch/bits/setjmp.h > new file mode 100644 > index 0000000000..42f8fa7657 > --- /dev/null > +++ b/sysdeps/loongarch/bits/setjmp.h > @@ -0,0 +1,39 @@ > +/* Define the machine-dependent type `jmp_buf'. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#ifndef _LOONGARCH_BITS_SETJMP_H > +#define _LOONGARCH_BITS_SETJMP_H > + > +typedef struct __jmp_buf_internal_tag > +{ > + /* Program counter. */ > + long int __pc; > + /* Stack pointer. */ > + long int __sp; > + /* Reserved */ > + long int __x; > + /* Frame pointer. */ > + long int __fp; > + /* Callee-saved registers. */ > + long int __regs[9]; > + /* Callee-saved floating point registers. */ > + double __fpregs[8]; > + > +} __jmp_buf[1]; > + > +#endif /* _LOONGARCH_BITS_SETJMP_H */ > diff --git a/sysdeps/loongarch/bsd-_setjmp.c b/sysdeps/loongarch/bsd-_setjmp.c > new file mode 100644 > index 0000000000..32f49441c3 > --- /dev/null > +++ b/sysdeps/loongarch/bsd-_setjmp.c > @@ -0,0 +1 @@ > +/* _setjmp is implemented in setjmp.S. */ > diff --git a/sysdeps/loongarch/bsd-setjmp.c b/sysdeps/loongarch/bsd-setjmp.c > new file mode 100644 > index 0000000000..45fd802aac > --- /dev/null > +++ b/sysdeps/loongarch/bsd-setjmp.c > @@ -0,0 +1 @@ > +/* setjmp is implemented in setjmp.S. */ > diff --git a/sysdeps/loongarch/dl-machine.h b/sysdeps/loongarch/dl-machine.h > new file mode 100644 > index 0000000000..c69c72d0ff > --- /dev/null > +++ b/sysdeps/loongarch/dl-machine.h > @@ -0,0 +1,288 @@ > +/* Machine-dependent ELF dynamic relocation inline functions. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#ifndef dl_machine_h > +#define dl_machine_h > + > +#define ELF_MACHINE_NAME "LoongArch" > + > +#include <entry.h> > +#include <elf/elf.h> > +#include <sys/asm.h> > +#include <dl-tls.h> > +#include <dl-static-tls.h> > +#include <dl-machine-rel.h> > + > +#ifndef _RTLD_PROLOGUE > +# define _RTLD_PROLOGUE(entry) \ > + ".globl\t" __STRING (entry) "\n\t" \ > + ".type\t" __STRING (entry) ", @function\n\t" \ > + CFI_STARTPROC "\n" \ > + __STRING (entry) ":\n" > +#endif > + > +#ifndef _RTLD_EPILOGUE > +# define _RTLD_EPILOGUE(entry) \ > + CFI_ENDPROC "\n\t" \ > + ".size\t" __STRING (entry) ", . - " __STRING (entry) "\n" > +#endif > + > +#define ELF_MACHINE_JMP_SLOT R_LARCH_JUMP_SLOT > +#define ELF_MACHINE_IRELATIVE R_LARCH_IRELATIVE > + > +#define elf_machine_type_class(type) \ > + ((ELF_RTYPE_CLASS_PLT *((type) == ELF_MACHINE_JMP_SLOT)) \ > + | (ELF_RTYPE_CLASS_COPY *((type) == R_LARCH_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 > +elf_machine_matches_host (const ElfW (Ehdr) *ehdr) > +{ > + /* We can only run LoongArch binaries. */ > + if (ehdr->e_machine != EM_LOONGARCH) > + return 0; > + > + return 1; > +} > + > +/* Return the run-time load address of the shared object. */ > +static inline ElfW (Addr) elf_machine_load_address (void) > +{ > + extern const ElfW(Ehdr) __ehdr_start attribute_hidden; > + return (ElfW(Addr)) &__ehdr_start; > +} > + > +/* Return the link-time address of _DYNAMIC. */ > +static inline ElfW (Addr) elf_machine_dynamic (void) > +{ > + extern ElfW(Dyn) _DYNAMIC[] attribute_hidden; > + return (ElfW(Addr)) _DYNAMIC - elf_machine_load_address (); > +} > + > +/* 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) "\ > + .cfi_label .Ldummy \n\ > + " CFI_UNDEFINED (1) " \n\ > + or $a0, $sp, $zero \n\ > + bl _dl_start \n\ > + # Stash user entry point in s0. \n\ > + or $s0, $v0, $zero \n\ > + # Load the original argument count. \n\ > + ld.d $a1, $sp, 0 \n\ > + # Call _dl_init (struct link_map *main_map, int argc, \ > + char **argv, char **env) \n\ > + la $a0, _rtld_local \n\ > + ld.d $a0, $a0, 0 \n\ > + addi.d $a2, $sp, 8 \n\ > + slli.d $a3, $a1, 3 \n\ > + add.d $a3, $a3, $a2 \n\ > + addi.d $a3, $a3, 8 \n\ > + # Stash the stack pointer in s1.\n\ > + or $s1, $sp, $zero \n\ > + # Adjust $sp for 16-aligned \n\ > + bstrins.d $sp, $zero, 3, 0 \n\ > + # Call the function to run the initializers. \n\ > + bl _dl_init \n\ > + # Restore the stack pointer for _start.\n\ > + or $sp, $s1, $zero \n\ > + # Pass our finalizer function to _start. \n\ > + la $a0, _dl_fini \n\ > + # Jump to the user entry point. \n\ > + jirl $zero, $s0, 0 \n\ > + " _RTLD_EPILOGUE (ENTRY_POINT) "\ > + .previous"); > + > +/* Names of the architecture-specific auditing callback functions. */ > +#define ARCH_LA_PLTENTER loongarch_gnu_pltenter > +#define ARCH_LA_PLTEXIT loongarch_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. */ > + > +static inline void __attribute__ ((always_inline)) > +elf_machine_rela (struct link_map *map, struct r_scope_elem *scope[], > + 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 (map, scope, &sym, version, r_type); > + ElfW (Addr) value = 0; > + if (sym_map != NULL) > + value = SYMBOL_ADDRESS (sym_map, sym, true) + reloc->r_addend; > + > + if (sym != NULL > + && __glibc_unlikely (ELFW (ST_TYPE) (sym->st_info) == STT_GNU_IFUNC) > + && __glibc_likely (sym->st_shndx != SHN_UNDEF) > + && __glibc_likely (!skip_ifunc)) > + value = ((ElfW (Addr) (*) (int)) value) (GLRO (dl_hwcap)); > + > + switch (r_type) > + { > + > + case R_LARCH_JUMP_SLOT: > + case __WORDSIZE == 64 ? R_LARCH_64: > + R_LARCH_32: > + *addr_field = value; > + break; > + > + case R_LARCH_NONE: > + break; > + > +#ifndef RTLD_BOOTSTRAP > + case __WORDSIZE == 64 ? R_LARCH_TLS_DTPMOD64: > + R_LARCH_TLS_DTPMOD32: > + *addr_field = sym_map->l_tls_modid; > + break; > + > + case __WORDSIZE == 64 ? R_LARCH_TLS_DTPREL64: > + R_LARCH_TLS_DTPREL32: > + *addr_field = TLS_DTPREL_VALUE (sym) + reloc->r_addend; > + break; > + > + case __WORDSIZE == 64 ? R_LARCH_TLS_TPREL64: > + R_LARCH_TLS_TPREL32: > + CHECK_STATIC_TLS (map, sym_map); > + *addr_field = TLS_TPREL_VALUE (sym_map, sym) + reloc->r_addend; > + break; > + > + case R_LARCH_COPY: > + { > + if (sym == NULL) > + /* This can happen in trace mode if an object could not be > + found. */ > + break; > + if (__glibc_unlikely (sym->st_size > refsym->st_size) > + || (__glibc_unlikely (sym->st_size < refsym->st_size) > + && GLRO(dl_verbose))) > + { > + const char *strtab; > + > + strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]); > + _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, > + MIN (sym->st_size, refsym->st_size)); > + break; > + } > + > + case R_LARCH_RELATIVE: > + *addr_field = map->l_addr + reloc->r_addend; > + break; > + > + case R_LARCH_IRELATIVE: > + value = map->l_addr + reloc->r_addend; > + if (__glibc_likely (!skip_ifunc)) > + value = ((ElfW (Addr) (*) (void)) value) (); > + *addr_field = value; > + break; > + > +#endif > + > + default: > + _dl_reloc_bad_type (map, r_type, 0); > + break; > + } > +} > + > +static 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; > +} > + > +static inline void __attribute__ ((always_inline)) > +elf_machine_lazy_rel (struct link_map *map, struct r_scope_elem *scope[], > + 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_LARCH_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. */ > + > +static inline int __attribute__ ((always_inline)) > +elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[], > + 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]); > + gotplt[0] = (ElfW (Addr)) & _dl_runtime_resolve; > + gotplt[1] = (ElfW (Addr)) l; > + } > +#endif > + > + return lazy; > +} > + > +#endif /* RESOLVE_MAP */ > diff --git a/sysdeps/loongarch/dl-trampoline.S b/sysdeps/loongarch/dl-trampoline.S > new file mode 100644 > index 0000000000..ad8ab0fda7 > --- /dev/null > +++ b/sysdeps/loongarch/dl-trampoline.S > @@ -0,0 +1,83 @@ > +/* PLT trampolines. > + Copyright (C) 2022 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 > + <https://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. */ > + > +# define FRAME_SIZE (-((-10 * SZREG - 8 * SZFREG) & ALMASK)) > + > +ENTRY (_dl_runtime_resolve) > + > + /* Save arguments to stack. */ > + ADDI sp, sp, -FRAME_SIZE > + > + REG_S ra, sp, 9*SZREG > + REG_S a0, sp, 1*SZREG > + REG_S a1, sp, 2*SZREG > + REG_S a2, sp, 3*SZREG > + REG_S a3, sp, 4*SZREG > + REG_S a4, sp, 5*SZREG > + REG_S a5, sp, 6*SZREG > + REG_S a6, sp, 7*SZREG > + REG_S a7, sp, 8*SZREG > + > + FREG_S fa0, sp, 10*SZREG + 0*SZFREG > + FREG_S fa1, sp, 10*SZREG + 1*SZFREG > + FREG_S fa2, sp, 10*SZREG + 2*SZFREG > + FREG_S fa3, sp, 10*SZREG + 3*SZFREG > + FREG_S fa4, sp, 10*SZREG + 4*SZFREG > + FREG_S fa5, sp, 10*SZREG + 5*SZFREG > + FREG_S fa6, sp, 10*SZREG + 6*SZFREG > + FREG_S fa7, sp, 10*SZREG + 7*SZFREG > + > + /* Update .got.plt and obtain runtime address of callee */ > + SLLI a1, t1, 1 > + or a0, t0, zero > + ADD a1, a1, t1 > + la a2, _dl_fixup > + jirl ra, a2, 0 > + or t1, v0, zero > + > + /* Restore arguments from stack. */ > + REG_L ra, sp, 9*SZREG > + REG_L a0, sp, 1*SZREG > + REG_L a1, sp, 2*SZREG > + REG_L a2, sp, 3*SZREG > + REG_L a3, sp, 4*SZREG > + REG_L a4, sp, 5*SZREG > + REG_L a5, sp, 6*SZREG > + REG_L a6, sp, 7*SZREG > + REG_L a7, sp, 8*SZREG > + > + FREG_L fa0, sp, 10*SZREG + 0*SZFREG > + FREG_L fa1, sp, 10*SZREG + 1*SZFREG > + FREG_L fa2, sp, 10*SZREG + 2*SZFREG > + FREG_L fa3, sp, 10*SZREG + 3*SZFREG > + FREG_L fa4, sp, 10*SZREG + 4*SZFREG > + FREG_L fa5, sp, 10*SZREG + 5*SZFREG > + FREG_L fa6, sp, 10*SZREG + 6*SZFREG > + FREG_L fa7, sp, 10*SZREG + 7*SZFREG > + > + ADDI sp, sp, FRAME_SIZE > + > + /* Invoke the callee. */ > + jirl zero, t1, 0 > +END (_dl_runtime_resolve) > diff --git a/sysdeps/loongarch/jmpbuf-offsets.h b/sysdeps/loongarch/jmpbuf-offsets.h > new file mode 100644 > index 0000000000..a4b8ea690e > --- /dev/null > +++ b/sysdeps/loongarch/jmpbuf-offsets.h > @@ -0,0 +1,22 @@ > +/* Private macros for accessing __jmp_buf contents. > + Copyright (C) 2022 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 > + <https://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/loongarch/jmpbuf-unwind.h b/sysdeps/loongarch/jmpbuf-unwind.h > new file mode 100644 > index 0000000000..6fa509151d > --- /dev/null > +++ b/sysdeps/loongarch/jmpbuf-unwind.h > @@ -0,0 +1,45 @@ > +/* Examine __jmp_buf for unwinding frames. > + Copyright (C) 2022 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 > + <https://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/loongarch/ldsodefs.h b/sysdeps/loongarch/ldsodefs.h > new file mode 100644 > index 0000000000..36b1b25b9f > --- /dev/null > +++ b/sysdeps/loongarch/ldsodefs.h > @@ -0,0 +1,41 @@ > +/* Run-time dynamic linker data structures for loaded ELF shared objects. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#ifndef _LOONGARCH_LDSODEFS_H > +#define _LOONGARCH_LDSODEFS_H 1 > + > +#include <elf.h> > + > +struct La_loongarch_regs; > +struct La_loongarch_retval; > + > +#define ARCH_PLTENTER_MEMBERS \ > + ElfW (Addr) (*loongarch_gnu_pltenter) (ElfW (Sym) *, unsigned int, \ > + uintptr_t *, uintptr_t *, \ > + const struct La_loongarch_regs *, \ > + unsigned int *, const char *name, \ > + long int *framesizep); > + > +#define ARCH_PLTEXIT_MEMBERS \ > + unsigned int (*loongarch_gnu_pltexit) (ElfW (Sym) *, unsigned int, \ > + uintptr_t *, uintptr_t *, const struct La_loongarch_regs *, \ > + struct La_loongarch_retval *, const char *); > + > +#include_next <ldsodefs.h> > + > +#endif > diff --git a/sysdeps/loongarch/linkmap.h b/sysdeps/loongarch/linkmap.h > new file mode 100644 > index 0000000000..bbba73ed70 > --- /dev/null > +++ b/sysdeps/loongarch/linkmap.h > @@ -0,0 +1,22 @@ > +/* Definition of link_map_machine. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +struct link_map_machine > +{ > + ElfW (Addr) plt; /* Address of .plt. */ > +}; > diff --git a/sysdeps/loongarch/machine-gmon.h b/sysdeps/loongarch/machine-gmon.h > new file mode 100644 > index 0000000000..4a3cdd964e > --- /dev/null > +++ b/sysdeps/loongarch/machine-gmon.h > @@ -0,0 +1,37 @@ > +/* LoongArch definitions for profiling support. > + Copyright (C) 2022 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 > + <https://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/loongarch/setjmp.S b/sysdeps/loongarch/setjmp.S > new file mode 100644 > index 0000000000..3afb9f3948 > --- /dev/null > +++ b/sysdeps/loongarch/setjmp.S > @@ -0,0 +1,64 @@ > +/* setjmp for LoongArch. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#include <sysdep.h> > +#include <sys/asm.h> > + > +ENTRY (_setjmp) > + li.w a1,0 > + b HIDDEN_JUMPTARGET (__sigsetjmp) > +END (_setjmp) > + > +ENTRY (setjmp) > + li.w a1,1 > +END (setjmp) > + > +ENTRY (__sigsetjmp) > + REG_S ra, a0, 0*SZREG > + REG_S sp, a0, 1*SZREG > + REG_S x, a0, 2*SZREG > + REG_S fp, a0, 3*SZREG > + REG_S s0, a0, 4*SZREG > + REG_S s1, a0, 5*SZREG > + REG_S s2, a0, 6*SZREG > + REG_S s3, a0, 7*SZREG > + REG_S s4, a0, 8*SZREG > + REG_S s5, a0, 9*SZREG > + REG_S s6, a0, 10*SZREG > + REG_S s7, a0, 11*SZREG > + REG_S s8, a0, 12*SZREG > + > + FREG_S $f24, a0, 13*SZREG + 0*SZFREG > + FREG_S $f25, a0, 13*SZREG + 1*SZFREG > + FREG_S $f26, a0, 13*SZREG + 2*SZFREG > + FREG_S $f27, a0, 13*SZREG + 3*SZFREG > + FREG_S $f28, a0, 13*SZREG + 4*SZFREG > + FREG_S $f29, a0, 13*SZREG + 5*SZFREG > + FREG_S $f30, a0, 13*SZREG + 6*SZFREG > + FREG_S $f31, a0, 13*SZREG + 7*SZFREG > + > +#if !IS_IN (libc) && IS_IN(rtld) > + li.w v0, 0 > + jirl zero,ra,0 > +#else > + b __sigjmp_save > +#endif > +END (__sigsetjmp) > + > +hidden_def (__sigsetjmp) > +weak_alias (_setjmp, __GI__setjmp) > diff --git a/sysdeps/loongarch/sotruss-lib.c b/sysdeps/loongarch/sotruss-lib.c > new file mode 100644 > index 0000000000..ce752785f6 > --- /dev/null > +++ b/sysdeps/loongarch/sotruss-lib.c > @@ -0,0 +1,50 @@ > +/* Override generic sotruss-lib.c to define actual functions for LoongArch. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#define HAVE_ARCH_PLTENTER > +#define HAVE_ARCH_PLTEXIT > + > +#include <elf/sotruss-lib.c> > + > +ElfW (Addr) > +la_loongarch_gnu_pltenter (ElfW (Sym) *sym __attribute__ ((unused)), > + unsigned int ndx __attribute__ ((unused)), > + uintptr_t *refcook, uintptr_t *defcook, > + La_loongarch_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_loongarch_gnu_pltexit (ElfW (Sym) *sym, unsigned int ndx, > + uintptr_t *refcook, uintptr_t *defcook, > + const struct La_loongarch_regs *inregs, > + struct La_loongarch_retval *outregs, > + const char *symname) > +{ > + print_exit (refcook, defcook, symname, outregs->lrv_a0); > + > + return 0; > +} > diff --git a/sysdeps/loongarch/start.S b/sysdeps/loongarch/start.S > new file mode 100644 > index 0000000000..280b5fab8c > --- /dev/null > +++ b/sysdeps/loongarch/start.S > @@ -0,0 +1,66 @@ > +/* Startup code compliant to the ELF LoongArch ABI. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#define __ASSEMBLY__ 1 > +#include <entry.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. */ > + > +/* > +int > +__libc_start_main (int (*main) (int, char **, char **), > + int argc, > + char **argv, > + __typeof (main) init, > + void (*fini) (void), > + void (*rtld_fini) (void), > + void *stack_end); > + */ > + > +ENTRY (ENTRY_POINT) > + > +/* Terminate call stack by noting ra is undefined. Use a dummy > + .cfi_label to force starting the FDE. */ > + .cfi_label .Ldummy > + cfi_undefined (1) > + or a5, a0, zero /* rtld_fini */ > + > +/* We must get symbol main through GOT table, since main may not be local. > + For instance: googletest defines main in dynamic library. */ > + la.got a0, t0, main > + REG_L a1, sp, 0 > + ADDI a2, sp, SZREG > + > + /* Adjust $sp for 16-aligned */ > + BSTRINS sp, zero, 3, 0 > + > + move a3, zero /* used to be init */ > + move a4, zero /* used to be fini */ > + or a6, sp, zero /* stack_end */ > + > + la.got ra, t0, __libc_start_main > + jirl ra, ra, 0 > + > + la.got ra, t0, abort > + jirl ra, ra, 0 > +END (ENTRY_POINT) > + > diff --git a/sysdeps/loongarch/sys/asm.h b/sysdeps/loongarch/sys/asm.h > new file mode 100644 > index 0000000000..b41ee59694 > --- /dev/null > +++ b/sysdeps/loongarch/sys/asm.h > @@ -0,0 +1,59 @@ > +/* Miscellaneous macros. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#ifndef _SYS_ASM_H > +#define _SYS_ASM_H > + > +#include <sys/regdef.h> > +#include <sysdeps/generic/sysdep.h> > + > +/* Macros to handle different pointer/register sizes for 32/64-bit code. */ > +#define SZREG 8 > +#define SZFREG 8 > +#define REG_L ld.d > +#define REG_S st.d > +#define SRLI srli.d > +#define SLLI slli.d > +#define ADDI addi.d > +#define ADD add.d > +#define BSTRINS bstrins.d > +#define LI li.d > +#define FREG_L fld.d > +#define FREG_S fst.d > + > +/* Declare leaf routine. */ > +#define LEAF(symbol) \ > + .text; \ > + .globl symbol; \ > + .align 3; \ > + cfi_startproc; \ > + .type symbol, @function; \ > + symbol: > + > +#define ENTRY(symbol) LEAF (symbol) > + > +/* 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/loongarch/tst-audit.h b/sysdeps/loongarch/tst-audit.h > new file mode 100644 > index 0000000000..e71948c86e > --- /dev/null > +++ b/sysdeps/loongarch/tst-audit.h > @@ -0,0 +1,23 @@ > +/* Definitions for testing PLT entry/exit auditing. > + Copyright (C) 2022 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 > + <https://www.gnu.org/licenses/>. */ > + > +#define pltenter la_loongarch_gnu_pltenter > +#define pltexit la_loongarch_gnu_pltexit > +#define La_regs La_loongarch_regs > +#define La_retval La_loongarch_retval > +#define int_retval lrv_a0
diff --git a/sysdeps/loongarch/__longjmp.S b/sysdeps/loongarch/__longjmp.S new file mode 100644 index 0000000000..37e7384413 --- /dev/null +++ b/sysdeps/loongarch/__longjmp.S @@ -0,0 +1,50 @@ +/* longjmp. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/asm.h> + +ENTRY (__longjmp) + REG_L ra, a0, 0*SZREG + REG_L sp, a0, 1*SZREG + REG_L x, a0, 2*SZREG + REG_L fp, a0, 3*SZREG + REG_L s0, a0, 4*SZREG + REG_L s1, a0, 5*SZREG + REG_L s2, a0, 6*SZREG + REG_L s3, a0, 7*SZREG + REG_L s4, a0, 8*SZREG + REG_L s5, a0, 9*SZREG + REG_L s6, a0, 10*SZREG + REG_L s7, a0, 11*SZREG + REG_L s8, a0, 12*SZREG + + FREG_L $f24, a0, 13*SZREG + 0*SZFREG + FREG_L $f25, a0, 13*SZREG + 1*SZFREG + FREG_L $f26, a0, 13*SZREG + 2*SZFREG + FREG_L $f27, a0, 13*SZREG + 3*SZFREG + FREG_L $f28, a0, 13*SZREG + 4*SZFREG + FREG_L $f29, a0, 13*SZREG + 5*SZFREG + FREG_L $f30, a0, 13*SZREG + 6*SZFREG + FREG_L $f31, a0, 13*SZREG + 7*SZFREG + + sltui a0,a1,1 + ADD a0, a0, a1 # a0 = (a1 == 0) ? 1 : a1 + jirl zero,ra,0 + +END (__longjmp) diff --git a/sysdeps/loongarch/bits/endianness.h b/sysdeps/loongarch/bits/endianness.h new file mode 100644 index 0000000000..7290be7b18 --- /dev/null +++ b/sysdeps/loongarch/bits/endianness.h @@ -0,0 +1,11 @@ +#ifndef _BITS_ENDIANNESS_H +#define _BITS_ENDIANNESS_H 1 + +#ifndef _BITS_ENDIAN_H +#error "Never use <bits/endianness.h> directly; include <endian.h> instead." +#endif + +/* LoongArch is little-endian. */ +#define __BYTE_ORDER __LITTLE_ENDIAN + +#endif /* bits/endianness.h */ diff --git a/sysdeps/loongarch/bits/link.h b/sysdeps/loongarch/bits/link.h new file mode 100644 index 0000000000..05c91575e9 --- /dev/null +++ b/sysdeps/loongarch/bits/link.h @@ -0,0 +1,58 @@ +/* Machine-specific declarations for dynamic linker interface. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _LINK_H +#error "Never include <bits/link.h> directly; use <link.h> instead." +#endif + +typedef struct La_loongarch_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_loongarch_regs; + +/* Return values for calls from PLT on LoongArch. */ +typedef struct La_loongarch_retval +{ + unsigned long int lrv_a0; + unsigned long int lrv_a1; + double lrv_fa0; + double lrv_fa1; +} La_loongarch_retval; + +__BEGIN_DECLS + +extern ElfW (Addr) la_loongarch_gnu_pltenter (ElfW (Sym) *__sym, + unsigned int __ndx, + uintptr_t *__refcook, + uintptr_t *__defcook, + La_loongarch_regs *__regs, + unsigned int *__flags, + const char *__symname, + long int *__framesizep); +extern unsigned int la_loongarch_gnu_pltexit (ElfW (Sym) *__sym, + unsigned int __ndx, + uintptr_t *__refcook, + uintptr_t *__defcook, + const La_loongarch_regs *__inregs, + La_loongarch_retval *__outregs, + const char *__symname); + +__END_DECLS diff --git a/sysdeps/loongarch/bits/setjmp.h b/sysdeps/loongarch/bits/setjmp.h new file mode 100644 index 0000000000..42f8fa7657 --- /dev/null +++ b/sysdeps/loongarch/bits/setjmp.h @@ -0,0 +1,39 @@ +/* Define the machine-dependent type `jmp_buf'. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _LOONGARCH_BITS_SETJMP_H +#define _LOONGARCH_BITS_SETJMP_H + +typedef struct __jmp_buf_internal_tag +{ + /* Program counter. */ + long int __pc; + /* Stack pointer. */ + long int __sp; + /* Reserved */ + long int __x; + /* Frame pointer. */ + long int __fp; + /* Callee-saved registers. */ + long int __regs[9]; + /* Callee-saved floating point registers. */ + double __fpregs[8]; + +} __jmp_buf[1]; + +#endif /* _LOONGARCH_BITS_SETJMP_H */ diff --git a/sysdeps/loongarch/bsd-_setjmp.c b/sysdeps/loongarch/bsd-_setjmp.c new file mode 100644 index 0000000000..32f49441c3 --- /dev/null +++ b/sysdeps/loongarch/bsd-_setjmp.c @@ -0,0 +1 @@ +/* _setjmp is implemented in setjmp.S. */ diff --git a/sysdeps/loongarch/bsd-setjmp.c b/sysdeps/loongarch/bsd-setjmp.c new file mode 100644 index 0000000000..45fd802aac --- /dev/null +++ b/sysdeps/loongarch/bsd-setjmp.c @@ -0,0 +1 @@ +/* setjmp is implemented in setjmp.S. */ diff --git a/sysdeps/loongarch/dl-machine.h b/sysdeps/loongarch/dl-machine.h new file mode 100644 index 0000000000..c69c72d0ff --- /dev/null +++ b/sysdeps/loongarch/dl-machine.h @@ -0,0 +1,288 @@ +/* Machine-dependent ELF dynamic relocation inline functions. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef dl_machine_h +#define dl_machine_h + +#define ELF_MACHINE_NAME "LoongArch" + +#include <entry.h> +#include <elf/elf.h> +#include <sys/asm.h> +#include <dl-tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> + +#ifndef _RTLD_PROLOGUE +# define _RTLD_PROLOGUE(entry) \ + ".globl\t" __STRING (entry) "\n\t" \ + ".type\t" __STRING (entry) ", @function\n\t" \ + CFI_STARTPROC "\n" \ + __STRING (entry) ":\n" +#endif + +#ifndef _RTLD_EPILOGUE +# define _RTLD_EPILOGUE(entry) \ + CFI_ENDPROC "\n\t" \ + ".size\t" __STRING (entry) ", . - " __STRING (entry) "\n" +#endif + +#define ELF_MACHINE_JMP_SLOT R_LARCH_JUMP_SLOT +#define ELF_MACHINE_IRELATIVE R_LARCH_IRELATIVE + +#define elf_machine_type_class(type) \ + ((ELF_RTYPE_CLASS_PLT *((type) == ELF_MACHINE_JMP_SLOT)) \ + | (ELF_RTYPE_CLASS_COPY *((type) == R_LARCH_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 +elf_machine_matches_host (const ElfW (Ehdr) *ehdr) +{ + /* We can only run LoongArch binaries. */ + if (ehdr->e_machine != EM_LOONGARCH) + return 0; + + return 1; +} + +/* Return the run-time load address of the shared object. */ +static inline ElfW (Addr) elf_machine_load_address (void) +{ + extern const ElfW(Ehdr) __ehdr_start attribute_hidden; + return (ElfW(Addr)) &__ehdr_start; +} + +/* Return the link-time address of _DYNAMIC. */ +static inline ElfW (Addr) elf_machine_dynamic (void) +{ + extern ElfW(Dyn) _DYNAMIC[] attribute_hidden; + return (ElfW(Addr)) _DYNAMIC - elf_machine_load_address (); +} + +/* 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) "\ + .cfi_label .Ldummy \n\ + " CFI_UNDEFINED (1) " \n\ + or $a0, $sp, $zero \n\ + bl _dl_start \n\ + # Stash user entry point in s0. \n\ + or $s0, $v0, $zero \n\ + # Load the original argument count. \n\ + ld.d $a1, $sp, 0 \n\ + # Call _dl_init (struct link_map *main_map, int argc, \ + char **argv, char **env) \n\ + la $a0, _rtld_local \n\ + ld.d $a0, $a0, 0 \n\ + addi.d $a2, $sp, 8 \n\ + slli.d $a3, $a1, 3 \n\ + add.d $a3, $a3, $a2 \n\ + addi.d $a3, $a3, 8 \n\ + # Stash the stack pointer in s1.\n\ + or $s1, $sp, $zero \n\ + # Adjust $sp for 16-aligned \n\ + bstrins.d $sp, $zero, 3, 0 \n\ + # Call the function to run the initializers. \n\ + bl _dl_init \n\ + # Restore the stack pointer for _start.\n\ + or $sp, $s1, $zero \n\ + # Pass our finalizer function to _start. \n\ + la $a0, _dl_fini \n\ + # Jump to the user entry point. \n\ + jirl $zero, $s0, 0 \n\ + " _RTLD_EPILOGUE (ENTRY_POINT) "\ + .previous"); + +/* Names of the architecture-specific auditing callback functions. */ +#define ARCH_LA_PLTENTER loongarch_gnu_pltenter +#define ARCH_LA_PLTEXIT loongarch_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. */ + +static inline void __attribute__ ((always_inline)) +elf_machine_rela (struct link_map *map, struct r_scope_elem *scope[], + 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 (map, scope, &sym, version, r_type); + ElfW (Addr) value = 0; + if (sym_map != NULL) + value = SYMBOL_ADDRESS (sym_map, sym, true) + reloc->r_addend; + + if (sym != NULL + && __glibc_unlikely (ELFW (ST_TYPE) (sym->st_info) == STT_GNU_IFUNC) + && __glibc_likely (sym->st_shndx != SHN_UNDEF) + && __glibc_likely (!skip_ifunc)) + value = ((ElfW (Addr) (*) (int)) value) (GLRO (dl_hwcap)); + + switch (r_type) + { + + case R_LARCH_JUMP_SLOT: + case __WORDSIZE == 64 ? R_LARCH_64: + R_LARCH_32: + *addr_field = value; + break; + + case R_LARCH_NONE: + break; + +#ifndef RTLD_BOOTSTRAP + case __WORDSIZE == 64 ? R_LARCH_TLS_DTPMOD64: + R_LARCH_TLS_DTPMOD32: + *addr_field = sym_map->l_tls_modid; + break; + + case __WORDSIZE == 64 ? R_LARCH_TLS_DTPREL64: + R_LARCH_TLS_DTPREL32: + *addr_field = TLS_DTPREL_VALUE (sym) + reloc->r_addend; + break; + + case __WORDSIZE == 64 ? R_LARCH_TLS_TPREL64: + R_LARCH_TLS_TPREL32: + CHECK_STATIC_TLS (map, sym_map); + *addr_field = TLS_TPREL_VALUE (sym_map, sym) + reloc->r_addend; + break; + + case R_LARCH_COPY: + { + if (sym == NULL) + /* This can happen in trace mode if an object could not be + found. */ + break; + if (__glibc_unlikely (sym->st_size > refsym->st_size) + || (__glibc_unlikely (sym->st_size < refsym->st_size) + && GLRO(dl_verbose))) + { + const char *strtab; + + strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]); + _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, + MIN (sym->st_size, refsym->st_size)); + break; + } + + case R_LARCH_RELATIVE: + *addr_field = map->l_addr + reloc->r_addend; + break; + + case R_LARCH_IRELATIVE: + value = map->l_addr + reloc->r_addend; + if (__glibc_likely (!skip_ifunc)) + value = ((ElfW (Addr) (*) (void)) value) (); + *addr_field = value; + break; + +#endif + + default: + _dl_reloc_bad_type (map, r_type, 0); + break; + } +} + +static 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; +} + +static inline void __attribute__ ((always_inline)) +elf_machine_lazy_rel (struct link_map *map, struct r_scope_elem *scope[], + 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_LARCH_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. */ + +static inline int __attribute__ ((always_inline)) +elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[], + 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]); + gotplt[0] = (ElfW (Addr)) & _dl_runtime_resolve; + gotplt[1] = (ElfW (Addr)) l; + } +#endif + + return lazy; +} + +#endif /* RESOLVE_MAP */ diff --git a/sysdeps/loongarch/dl-trampoline.S b/sysdeps/loongarch/dl-trampoline.S new file mode 100644 index 0000000000..ad8ab0fda7 --- /dev/null +++ b/sysdeps/loongarch/dl-trampoline.S @@ -0,0 +1,83 @@ +/* PLT trampolines. + Copyright (C) 2022 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 + <https://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. */ + +# define FRAME_SIZE (-((-10 * SZREG - 8 * SZFREG) & ALMASK)) + +ENTRY (_dl_runtime_resolve) + + /* Save arguments to stack. */ + ADDI sp, sp, -FRAME_SIZE + + REG_S ra, sp, 9*SZREG + REG_S a0, sp, 1*SZREG + REG_S a1, sp, 2*SZREG + REG_S a2, sp, 3*SZREG + REG_S a3, sp, 4*SZREG + REG_S a4, sp, 5*SZREG + REG_S a5, sp, 6*SZREG + REG_S a6, sp, 7*SZREG + REG_S a7, sp, 8*SZREG + + FREG_S fa0, sp, 10*SZREG + 0*SZFREG + FREG_S fa1, sp, 10*SZREG + 1*SZFREG + FREG_S fa2, sp, 10*SZREG + 2*SZFREG + FREG_S fa3, sp, 10*SZREG + 3*SZFREG + FREG_S fa4, sp, 10*SZREG + 4*SZFREG + FREG_S fa5, sp, 10*SZREG + 5*SZFREG + FREG_S fa6, sp, 10*SZREG + 6*SZFREG + FREG_S fa7, sp, 10*SZREG + 7*SZFREG + + /* Update .got.plt and obtain runtime address of callee */ + SLLI a1, t1, 1 + or a0, t0, zero + ADD a1, a1, t1 + la a2, _dl_fixup + jirl ra, a2, 0 + or t1, v0, zero + + /* Restore arguments from stack. */ + REG_L ra, sp, 9*SZREG + REG_L a0, sp, 1*SZREG + REG_L a1, sp, 2*SZREG + REG_L a2, sp, 3*SZREG + REG_L a3, sp, 4*SZREG + REG_L a4, sp, 5*SZREG + REG_L a5, sp, 6*SZREG + REG_L a6, sp, 7*SZREG + REG_L a7, sp, 8*SZREG + + FREG_L fa0, sp, 10*SZREG + 0*SZFREG + FREG_L fa1, sp, 10*SZREG + 1*SZFREG + FREG_L fa2, sp, 10*SZREG + 2*SZFREG + FREG_L fa3, sp, 10*SZREG + 3*SZFREG + FREG_L fa4, sp, 10*SZREG + 4*SZFREG + FREG_L fa5, sp, 10*SZREG + 5*SZFREG + FREG_L fa6, sp, 10*SZREG + 6*SZFREG + FREG_L fa7, sp, 10*SZREG + 7*SZFREG + + ADDI sp, sp, FRAME_SIZE + + /* Invoke the callee. */ + jirl zero, t1, 0 +END (_dl_runtime_resolve) diff --git a/sysdeps/loongarch/jmpbuf-offsets.h b/sysdeps/loongarch/jmpbuf-offsets.h new file mode 100644 index 0000000000..a4b8ea690e --- /dev/null +++ b/sysdeps/loongarch/jmpbuf-offsets.h @@ -0,0 +1,22 @@ +/* Private macros for accessing __jmp_buf contents. + Copyright (C) 2022 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 + <https://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/loongarch/jmpbuf-unwind.h b/sysdeps/loongarch/jmpbuf-unwind.h new file mode 100644 index 0000000000..6fa509151d --- /dev/null +++ b/sysdeps/loongarch/jmpbuf-unwind.h @@ -0,0 +1,45 @@ +/* Examine __jmp_buf for unwinding frames. + Copyright (C) 2022 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 + <https://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/loongarch/ldsodefs.h b/sysdeps/loongarch/ldsodefs.h new file mode 100644 index 0000000000..36b1b25b9f --- /dev/null +++ b/sysdeps/loongarch/ldsodefs.h @@ -0,0 +1,41 @@ +/* Run-time dynamic linker data structures for loaded ELF shared objects. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _LOONGARCH_LDSODEFS_H +#define _LOONGARCH_LDSODEFS_H 1 + +#include <elf.h> + +struct La_loongarch_regs; +struct La_loongarch_retval; + +#define ARCH_PLTENTER_MEMBERS \ + ElfW (Addr) (*loongarch_gnu_pltenter) (ElfW (Sym) *, unsigned int, \ + uintptr_t *, uintptr_t *, \ + const struct La_loongarch_regs *, \ + unsigned int *, const char *name, \ + long int *framesizep); + +#define ARCH_PLTEXIT_MEMBERS \ + unsigned int (*loongarch_gnu_pltexit) (ElfW (Sym) *, unsigned int, \ + uintptr_t *, uintptr_t *, const struct La_loongarch_regs *, \ + struct La_loongarch_retval *, const char *); + +#include_next <ldsodefs.h> + +#endif diff --git a/sysdeps/loongarch/linkmap.h b/sysdeps/loongarch/linkmap.h new file mode 100644 index 0000000000..bbba73ed70 --- /dev/null +++ b/sysdeps/loongarch/linkmap.h @@ -0,0 +1,22 @@ +/* Definition of link_map_machine. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +struct link_map_machine +{ + ElfW (Addr) plt; /* Address of .plt. */ +}; diff --git a/sysdeps/loongarch/machine-gmon.h b/sysdeps/loongarch/machine-gmon.h new file mode 100644 index 0000000000..4a3cdd964e --- /dev/null +++ b/sysdeps/loongarch/machine-gmon.h @@ -0,0 +1,37 @@ +/* LoongArch definitions for profiling support. + Copyright (C) 2022 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 + <https://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/loongarch/setjmp.S b/sysdeps/loongarch/setjmp.S new file mode 100644 index 0000000000..3afb9f3948 --- /dev/null +++ b/sysdeps/loongarch/setjmp.S @@ -0,0 +1,64 @@ +/* setjmp for LoongArch. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/asm.h> + +ENTRY (_setjmp) + li.w a1,0 + b HIDDEN_JUMPTARGET (__sigsetjmp) +END (_setjmp) + +ENTRY (setjmp) + li.w a1,1 +END (setjmp) + +ENTRY (__sigsetjmp) + REG_S ra, a0, 0*SZREG + REG_S sp, a0, 1*SZREG + REG_S x, a0, 2*SZREG + REG_S fp, a0, 3*SZREG + REG_S s0, a0, 4*SZREG + REG_S s1, a0, 5*SZREG + REG_S s2, a0, 6*SZREG + REG_S s3, a0, 7*SZREG + REG_S s4, a0, 8*SZREG + REG_S s5, a0, 9*SZREG + REG_S s6, a0, 10*SZREG + REG_S s7, a0, 11*SZREG + REG_S s8, a0, 12*SZREG + + FREG_S $f24, a0, 13*SZREG + 0*SZFREG + FREG_S $f25, a0, 13*SZREG + 1*SZFREG + FREG_S $f26, a0, 13*SZREG + 2*SZFREG + FREG_S $f27, a0, 13*SZREG + 3*SZFREG + FREG_S $f28, a0, 13*SZREG + 4*SZFREG + FREG_S $f29, a0, 13*SZREG + 5*SZFREG + FREG_S $f30, a0, 13*SZREG + 6*SZFREG + FREG_S $f31, a0, 13*SZREG + 7*SZFREG + +#if !IS_IN (libc) && IS_IN(rtld) + li.w v0, 0 + jirl zero,ra,0 +#else + b __sigjmp_save +#endif +END (__sigsetjmp) + +hidden_def (__sigsetjmp) +weak_alias (_setjmp, __GI__setjmp) diff --git a/sysdeps/loongarch/sotruss-lib.c b/sysdeps/loongarch/sotruss-lib.c new file mode 100644 index 0000000000..ce752785f6 --- /dev/null +++ b/sysdeps/loongarch/sotruss-lib.c @@ -0,0 +1,50 @@ +/* Override generic sotruss-lib.c to define actual functions for LoongArch. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#define HAVE_ARCH_PLTENTER +#define HAVE_ARCH_PLTEXIT + +#include <elf/sotruss-lib.c> + +ElfW (Addr) +la_loongarch_gnu_pltenter (ElfW (Sym) *sym __attribute__ ((unused)), + unsigned int ndx __attribute__ ((unused)), + uintptr_t *refcook, uintptr_t *defcook, + La_loongarch_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_loongarch_gnu_pltexit (ElfW (Sym) *sym, unsigned int ndx, + uintptr_t *refcook, uintptr_t *defcook, + const struct La_loongarch_regs *inregs, + struct La_loongarch_retval *outregs, + const char *symname) +{ + print_exit (refcook, defcook, symname, outregs->lrv_a0); + + return 0; +} diff --git a/sysdeps/loongarch/start.S b/sysdeps/loongarch/start.S new file mode 100644 index 0000000000..280b5fab8c --- /dev/null +++ b/sysdeps/loongarch/start.S @@ -0,0 +1,66 @@ +/* Startup code compliant to the ELF LoongArch ABI. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#define __ASSEMBLY__ 1 +#include <entry.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. */ + +/* +int +__libc_start_main (int (*main) (int, char **, char **), + int argc, + char **argv, + __typeof (main) init, + void (*fini) (void), + void (*rtld_fini) (void), + void *stack_end); + */ + +ENTRY (ENTRY_POINT) + +/* Terminate call stack by noting ra is undefined. Use a dummy + .cfi_label to force starting the FDE. */ + .cfi_label .Ldummy + cfi_undefined (1) + or a5, a0, zero /* rtld_fini */ + +/* We must get symbol main through GOT table, since main may not be local. + For instance: googletest defines main in dynamic library. */ + la.got a0, t0, main + REG_L a1, sp, 0 + ADDI a2, sp, SZREG + + /* Adjust $sp for 16-aligned */ + BSTRINS sp, zero, 3, 0 + + move a3, zero /* used to be init */ + move a4, zero /* used to be fini */ + or a6, sp, zero /* stack_end */ + + la.got ra, t0, __libc_start_main + jirl ra, ra, 0 + + la.got ra, t0, abort + jirl ra, ra, 0 +END (ENTRY_POINT) + diff --git a/sysdeps/loongarch/sys/asm.h b/sysdeps/loongarch/sys/asm.h new file mode 100644 index 0000000000..b41ee59694 --- /dev/null +++ b/sysdeps/loongarch/sys/asm.h @@ -0,0 +1,59 @@ +/* Miscellaneous macros. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _SYS_ASM_H +#define _SYS_ASM_H + +#include <sys/regdef.h> +#include <sysdeps/generic/sysdep.h> + +/* Macros to handle different pointer/register sizes for 32/64-bit code. */ +#define SZREG 8 +#define SZFREG 8 +#define REG_L ld.d +#define REG_S st.d +#define SRLI srli.d +#define SLLI slli.d +#define ADDI addi.d +#define ADD add.d +#define BSTRINS bstrins.d +#define LI li.d +#define FREG_L fld.d +#define FREG_S fst.d + +/* Declare leaf routine. */ +#define LEAF(symbol) \ + .text; \ + .globl symbol; \ + .align 3; \ + cfi_startproc; \ + .type symbol, @function; \ + symbol: + +#define ENTRY(symbol) LEAF (symbol) + +/* 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/loongarch/tst-audit.h b/sysdeps/loongarch/tst-audit.h new file mode 100644 index 0000000000..e71948c86e --- /dev/null +++ b/sysdeps/loongarch/tst-audit.h @@ -0,0 +1,23 @@ +/* Definitions for testing PLT entry/exit auditing. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#define pltenter la_loongarch_gnu_pltenter +#define pltexit la_loongarch_gnu_pltexit +#define La_regs La_loongarch_regs +#define La_retval La_loongarch_retval +#define int_retval lrv_a0