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([2804:431:c7ca:5fbd:82eb:6a4d:6bc4:fb11]) by smtp.gmail.com with ESMTPSA id q7-20020a9d6547000000b0060603221253sm4548693otl.35.2022.05.09.05.39.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 May 2022 05:39:05 -0700 (PDT) Message-ID: <44834807-c008-45dd-3cea-b3beab266ad8@linaro.org> Date: Mon, 9 May 2022 09:39:03 -0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: [PATCH v4 04/13] LoongArch: ABI Implementation Content-Language: en-US To: caiyinyu , libc-alpha@sourceware.org Cc: joseph_myers@mentor.com, xuchenghua@loongson.cn References: <20220509023010.1250020-1-caiyinyu@loongson.cn> <20220509023010.1250020-5-caiyinyu@loongson.cn> From: Adhemerval Zanella In-Reply-To: <20220509023010.1250020-5-caiyinyu@loongson.cn> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-11.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, KAM_STOCKGEN, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 May 2022 12:39:13 -0000 On 08/05/2022 23:30, caiyinyu wrote: > --- > sysdeps/loongarch/__longjmp.S | 52 +++ > sysdeps/loongarch/bits/endianness.h | 11 + > sysdeps/loongarch/bits/link.h | 58 +++ > sysdeps/loongarch/bits/setjmp.h | 42 +++ > sysdeps/loongarch/bsd-_setjmp.c | 1 + > sysdeps/loongarch/bsd-setjmp.c | 1 + > sysdeps/loongarch/dl-machine.h | 362 +++++++++++++++++++ > sysdeps/loongarch/dl-trampoline.S | 91 +++++ > 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 | 66 ++++ > sysdeps/loongarch/sotruss-lib.c | 50 +++ > sysdeps/loongarch/start.S | 67 ++++ > sysdeps/loongarch/sys/asm.h | 59 +++ > sysdeps/loongarch/tst-audit.h | 23 ++ > sysdeps/unix/sysv/linux/loongarch/ldconfig.h | 26 ++ > 19 files changed, 1076 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 > create mode 100644 sysdeps/unix/sysv/linux/loongarch/ldconfig.h > > diff --git a/sysdeps/loongarch/__longjmp.S b/sysdeps/loongarch/__longjmp.S > new file mode 100644 > index 0000000000..b7690dd94f > --- /dev/null > +++ b/sysdeps/loongarch/__longjmp.S > @@ -0,0 +1,52 @@ > +/* 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 > + . */ > + > +#include > +#include > + > +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 > + > +#ifndef __loongarch_soft_float > + 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 > +#endif > + > + 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 directly; include 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..4df09989cb > --- /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 > + . */ > + > +#ifndef _LINK_H > +#error "Never include directly; use 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..8b323ad2b6 > --- /dev/null > +++ b/sysdeps/loongarch/bits/setjmp.h > @@ -0,0 +1,42 @@ > +/* 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 > + . */ > + > +#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]; > + > +#ifndef __loongarch_soft_float > + /* Callee-saved floating point registers. */ > + double __fpregs[8]; > +#endif > + > +} __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..68b68e677d > --- /dev/null > +++ b/sysdeps/loongarch/dl-machine.h > @@ -0,0 +1,362 @@ > +/* 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 > + . */ > + > +#ifndef dl_machine_h > +#define dl_machine_h > + > +#define ELF_MACHINE_NAME "LoongArch" > + > +#include > +#include > +#include > +#include > +#include > +#include > + > +#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 \ > + || (__WORDSIZE == 32 && (type) == R_LARCH_TLS_DTPREL32) \ > + || (__WORDSIZE == 32 && (type) == R_LARCH_TLS_DTPMOD32) \ > + || (__WORDSIZE == 32 && (type) == R_LARCH_TLS_TPREL32) \ > + || (__WORDSIZE == 64 && (type) == R_LARCH_TLS_DTPREL64) \ > + || (__WORDSIZE == 64 && (type) == R_LARCH_TLS_DTPMOD64) \ > + || (__WORDSIZE == 64 && (type) == R_LARCH_TLS_TPREL64))) \ > + | (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 __attribute_used__ I am almost sure that with GNU C11 that we use to build glibc there is no need to use __attribute_used__. I take you are copy/paste from other ports, but it would be goot to see if we can clean this up. > +elf_machine_matches_host (const ElfW (Ehdr) * ehdr) > +{ > + /* We can only run LoongArch binaries. */ > + if (ehdr->e_machine != EM_LOONGARCH) > + return 0; > + > + return 1; > +} > + > +/* Runtime address of .got */ > +#define _GLOBAL_OFFSET_TABLE_ \ > + ({ \ > + ElfW (Addr) * r; \ > + asm("la.pcrel %0, _GLOBAL_OFFSET_TABLE_" : "=r"(r)); \ > + r; \ > + }) > + > +/* Return the link-time address of _DYNAMIC. */ > +static inline ElfW (Addr) elf_machine_dynamic (void) > +{ > + return _GLOBAL_OFFSET_TABLE_[0]; > +} > + > +#define STRINGXP(X) __STRING (X) > +#define STRINGXV(X) STRINGV_ (X) > +#define STRINGV_(...) #__VA_ARGS__ These seems not be used on the patch. > + > +/* Return the run-time load address of the shared object. */ > +static inline ElfW (Addr) elf_machine_load_address (void) > +{ > + ElfW (Addr) got_linktime_addr; > + asm("la.got %0, _GLOBAL_OFFSET_TABLE_" > + /* Link-time address in GOT entry before runtime relocation */ > + : "=r"(got_linktime_addr)); > + return (ElfW (Addr)) _GLOBAL_OFFSET_TABLE_ - got_linktime_addr; > +} > + > +/* 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\ > + # See if we were run as a command with the executable file \n\ > + # name as an extra leading argument. \n\ > + la $a0, _dl_skip_args \n\ > + ld.w $a0, $a0, 0 \n\ > + # Load the original argument count. \n\ > + ld.d $a1, $sp, 0 \n\ > + # Subtract _dl_skip_args from it. \n\ > + sub.d $a1, $a1, $a0 \n\ > + # Adjust the stack pointer to skip _dl_skip_args words. \n\ > + slli.d $a0, $a0, 3 \n\ > + add.d $sp, $sp, $a0 \n\ > + # Save back the modified argument count. \n\ > + st.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\ > + # Adjust $sp for 16-aligned \n\ > + srli.d $t0, $sp, 4 \n\ > + slli.d $t0, $t0, 4 \n\ > + ori $t1, $sp, 0 \n\ > + addi.d $sp, $t0, -32 \n\ > + st.d $t1, $sp, 24 \n\ > + # Call the function to run the initializers. \n\ > + bl _dl_init \n\ > + # Pass our finalizer function to _start. \n\ > + ld.d $sp, $sp, 24 \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, Indentation seeems off here. > + 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 > + && __builtin_expect (ELFW (ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0) > + && __builtin_expect (sym->st_shndx != SHN_UNDEF, 1) > + && __builtin_expect (!skip_ifunc, 1)) I think we should use __glibc_likely on newer code, as you are already doing below. > + value = ((ElfW (Addr) (*) (int)) value) (GLRO (dl_hwcap)); > + > + switch (r_type) > + { > +#ifndef RTLD_BOOTSTRAP > + case __WORDSIZE == 64 ? R_LARCH_TLS_DTPMOD64: > + R_LARCH_TLS_DTPMOD32: > + if (sym_map) > + *addr_field = sym_map->l_tls_modid; > + break; > + > + case __WORDSIZE == 64 ? R_LARCH_TLS_DTPREL64: > + R_LARCH_TLS_DTPREL32: > + if (sym != NULL) > + *addr_field = TLS_DTPREL_VALUE (sym) + reloc->r_addend; > + break; > + > + case __WORDSIZE == 64 ? R_LARCH_TLS_TPREL64: > + R_LARCH_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_LARCH_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 ?: "", > + strtab + refsym->st_name); > + } > + > + memcpy (reloc_addr, (void *) value, size); > + break; > + } > +#endif > + > +#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC > + case R_LARCH_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_LARCH_JUMP_SLOT: > + case __WORDSIZE == 64 ? R_LARCH_64: > + R_LARCH_32: > + *addr_field = value; > + 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; > + > + case R_LARCH_NONE: > + break; > + > + 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 if (__glibc_unlikely (r_type == R_LARCH_IRELATIVE)) > + { > + ElfW (Addr) *value = (void *) (l_addr + reloc->r_addend); > + if (__glibc_likely (!skip_ifunc)) > + value = (ElfW (Addr) *) ((ElfW (Addr) (*) (void)) value) (); > + *reloc_addr = (ElfW (Addr)) value; > + } > + 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]); > + /* 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/loongarch/dl-trampoline.S b/sysdeps/loongarch/dl-trampoline.S > new file mode 100644 > index 0000000000..eb610392f6 > --- /dev/null > +++ b/sysdeps/loongarch/dl-trampoline.S > @@ -0,0 +1,91 @@ > +/* 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 > + . */ > + > +#include > +#include > + > +/* Assembler veneer called from the PLT header code for lazy loading. > + The PLT header passes its own args in t0-t2. */ > + > +#ifdef __loongarch_soft_float > +# 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, 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 > + > +#ifndef __loongarch_soft_float > + 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 > +#endif > + > + /* 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 > + > +#ifndef __loongarch_soft_float > + 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 > +#endif > + > + 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 > + . */ > + > +#include > + > +/* 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 > + . */ > + > +#include > +#include > +#include > +#include > + > +/* 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 > + . */ > + > +#ifndef _LOONGARCH_LDSODEFS_H > +#define _LOONGARCH_LDSODEFS_H 1 > + > +#include > + > +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 > + > +#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 > + . */ > + > +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 > + . */ > + > +/* Accept 'frompc' address as argument from the function that calls > + _mcount for profiling. Use __builtin_return_address (0) > + for the 'selfpc' address. */ > + > +#include > + > +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..b93ae2f5da > --- /dev/null > +++ b/sysdeps/loongarch/setjmp.S > @@ -0,0 +1,66 @@ > +/* 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 > + . */ > + > +#include > +#include > + > +ENTRY (_setjmp) > + li.w a1,0 > + b __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 > + > +#ifndef __loongarch_soft_float > + 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 > +#endif > + > +#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..5b15f4815a > --- /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 > + . */ > + > +#define HAVE_ARCH_PLTENTER > +#define HAVE_ARCH_PLTEXIT > + > +#include > + > +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..a9b32aa966 > --- /dev/null > +++ b/sysdeps/loongarch/start.S > @@ -0,0 +1,67 @@ > +/* 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 > + . */ > + > +#define __ASSEMBLY__ 1 > +#include > +#include > + > +/* 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 */ > + SRLI sp, sp, 4 > + SLLI sp, sp, 4 > + > + 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 > + . */ > + > +#ifndef _SYS_ASM_H > +#define _SYS_ASM_H > + > +#include > +#include > + > +/* 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 > + . */ > + > +#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/unix/sysv/linux/loongarch/ldconfig.h b/sysdeps/unix/sysv/linux/loongarch/ldconfig.h > new file mode 100644 > index 0000000000..4887c30ca2 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/loongarch/ldconfig.h > @@ -0,0 +1,26 @@ > +/* ldconfig default paths and libraries. > + 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 > + . */ > + > +#include > + > +#define SYSDEP_KNOWN_INTERPRETER_NAMES \ > + { "/lib64/ld-linux-loongarch-lp64d.so.1", FLAG_ELF_LIBC6 }, > + > +#define SYSDEP_KNOWN_LIBRARY_NAMES \ > + { "libc.so.6", FLAG_ELF_LIBC6 }, \ > + { "libm.so.6", FLAG_ELF_LIBC6 },