From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) by sourceware.org (Postfix) with ESMTPS id 791763858427 for ; Mon, 9 May 2022 07:56:39 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 791763858427 Received: by mail-pg1-x52d.google.com with SMTP id e5so11367988pgc.5 for ; Mon, 09 May 2022 00:56:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=TeGhFcBaPdtjNKqSjAKAc4XUec0UD3Wdu7NTEwHTScY=; b=EvaNxGdbv6dUBi0mt/Mmy8xLM0/9xcMbboMjU1BTyu15933SXohtugGzSm5CSrQnSB HfpqDbowrA8t3msQtC69qzcmbBWJvqesBzoD+LApxR/9Gsq9FYK+4Ka41hsJxWTYYKQd YwNrao78NTyUuGbTNTI6suDTrcv1bXIZ2u0yv79z37AfnIuzMQj78KDGiO/aXCnBZ9Iz oKr2KZCObKBciC6CGFIPtc3n+p2WeWB3+Ge7fGSET1ED5VEKGCLBADQip3eHk1wO8t8+ n+/9iGU4xxVfaigoQyQMrcCSSKEXfyizvotmfiilHtg3KsBaPrfItICmpvM4KXTgKBWE aGbw== X-Gm-Message-State: AOAM530G3guWSBWsrN0M++EdclxzMKJdskKcHrPzRWL/RpghyhsXPxhg o0I0SsXTAP/UvqhOjBjKCFkaGGD7+VdCqg== X-Google-Smtp-Source: ABdhPJx5PVYafx5xdCXpEYk1PS+aa9WosDtAiGMEKG2x1hhi+A9i8cUZX2FRqSE/pu1UQ0kQQDSfuQ== X-Received: by 2002:a05:6a00:98c:b0:50d:f856:53d8 with SMTP id u12-20020a056a00098c00b0050df85653d8mr14976876pfg.49.1652082995223; Mon, 09 May 2022 00:56:35 -0700 (PDT) Received: from google.com ([2620:15c:2ce:200:d13b:cb3d:8501:1f05]) by smtp.gmail.com with ESMTPSA id d2-20020a170902f14200b0015e8d4eb1efsm6334628plb.57.2022.05.09.00.56.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 May 2022 00:56:34 -0700 (PDT) Date: Mon, 9 May 2022 00:56:31 -0700 From: Fangrui Song To: caiyinyu Cc: libc-alpha@sourceware.org, xuchenghua@loongson.cn, joseph_myers@mentor.com Subject: Re: [PATCH v4 04/13] LoongArch: ABI Implementation Message-ID: <20220509075631.jkgi33z5fi5iwhzt@google.com> References: <20220509023010.1250020-1-caiyinyu@loongson.cn> <20220509023010.1250020-5-caiyinyu@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20220509023010.1250020-5-caiyinyu@loongson.cn> X-Spam-Status: No, score=-26.0 required=5.0 tests=BAYES_00, DKIMWL_WL_MED, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH, GIT_PATCH_0, KAM_INFOUSMEBIZ, KAM_SHORT, KAM_STOCKGEN, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE, USER_IN_DEF_DKIM_WL, USER_IN_DEF_SPF_WL 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 07:56:44 -0000 On 2022-05-09, 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__ >+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]; >+} _GLOBAL_OFFSET_TABLE_[0] == link_time_dynamic is not recommended. See https://maskray.me/blog/2021-09-05-build-glibc-with-lld#global_offset_table_0 aarch64/riscv/x86_64/etc have been updated to use the preferred approach. >+#define STRINGXP(X) __STRING (X) >+#define STRINGXV(X) STRINGV_ (X) >+#define STRINGV_(...) #__VA_ARGS__ >+ >+/* Return the run-time load address of the shared object. */ >+static inline ElfW (Addr) elf_machine_load_address (void) >+{ >+ ElfW (Addr) 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, >+ 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)) >+ 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 }, >-- >2.31.1 >