From patchwork Thu Aug 19 03:52:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Hua X-Patchwork-Id: 44701 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 32E38389706B for ; Thu, 19 Aug 2021 03:53:03 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 32E38389706B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1629345183; bh=f1d/7jzdpS/x8BCiDkqC956DxYo2xWAxuI2EwTelAq4=; h=Date:Subject:To:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=aIwWAD7WdbGcU1DE+MsvPnxZswSLiBzKREY6RhA7Ei6iSiG27RViTgC6EkLb8j9Dz RoshQmLNe3RvjZiPbRkC0xcy+fbVuXrXUnVNk5JGKrDnQGo4YCihnr0vD6H8Cs/o1i VpdRwMpu9VWKuzfh2N6AnlGpNQNFw/0mTNfrn8O8= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-yb1-xb2b.google.com (mail-yb1-xb2b.google.com [IPv6:2607:f8b0:4864:20::b2b]) by sourceware.org (Postfix) with ESMTPS id D3A47385701F for ; Thu, 19 Aug 2021 03:52:27 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org D3A47385701F Received: by mail-yb1-xb2b.google.com with SMTP id p4so9700313yba.3 for ; Wed, 18 Aug 2021 20:52:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=f1d/7jzdpS/x8BCiDkqC956DxYo2xWAxuI2EwTelAq4=; b=jz8m5yPOFNq7KLoX0cPgDu+ndKHGd682p0bdoxR3igebbSikVc/PJYbLFGTAylLqup /nfyrhsn6+CD9KF7S+ODawXC2GvScUS0gm5VZd6RLwrSMsLywKcGesYIJcEWvcmUbP5R xTnkLdTXRqUxdtffiNkiOB16MjuFtz+20ubK5btH6zWydfy9CY63oaRxfI8CZ0/q4asW t9wBH4ZLXB9n0JHqWdTljgkwUH+nBOwBRuzo9vKeR/kI4KcuhwVVahAkctKbP1jv8cYw NDwkTVvqXnmf9X6J+gbkCpbMTzbfp9b6JUasvsSLmhJXqalWt54CjEwZZH5AxQqiDWHB ckPg== X-Gm-Message-State: AOAM532mTx6YQaNf8b7lD7kxcM7huODaXdJwaIFJzYhTMvyPtkhGjGFf DdrC/hHCrZkQZFxEytxOtlSxA5t9yocG50t4kcXAIMZ1TLupDgZn X-Google-Smtp-Source: ABdhPJytncI21JFx0R5es43be9+mKiV/QdYOPO39lx/BIaBvvRuuUInMn0G8Pd7fzY7W6akjNpv/yNqGjYvgV5QWq2M= X-Received: by 2002:a25:7cc6:: with SMTP id x189mr17646619ybc.371.1629345147253; Wed, 18 Aug 2021 20:52:27 -0700 (PDT) MIME-Version: 1.0 Date: Thu, 19 Aug 2021 11:52:14 +0800 Message-ID: Subject: [PATCH 2/14] [LoongArch] ABI Implementation To: libc-alpha@sourceware.org X-Spam-Status: No, score=-6.3 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, KAM_SHORT, KAM_STOCKGEN, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, URIBL_BLACK 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-Patchwork-Original-From: Paul Hua via Libc-alpha From: Paul Hua Reply-To: Paul Hua Cc: Xu Chenghua , huangpei@loongson.cn, caiyinyu@loongson.cn Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" From 8fb85c96df180dab29ae219eb088e1d1cb822f15 Mon Sep 17 00:00:00 2001 From: caiyinyu Date: Tue, 27 Jul 2021 15:29:12 +0800 Subject: [PATCH 02/14] LoongArch: ABI Implementation This is meant to contain all the LoongArch code that needs to explicitly name registers or manage in-memory structure layout. This does not contain any of the Linux-specific code. * sysdeps/loongarch/__longjmp.S: New file. * sysdeps/loongarch/bits/endianness.h: Likewise. * sysdeps/loongarch/bits/link.h: Likewise. * sysdeps/loongarch/bits/setjmp.h: Likewise. * sysdeps/loongarch/bits/wordsize.h: Likewise. * sysdeps/loongarch/dl-machine.h: Likewise. * sysdeps/loongarch/dl-trampoline.S: Likewise. * sysdeps/loongarch/gccframe.h: Likewise. * sysdeps/loongarch/jmpbuf-offsets.h: Likewise. * sysdeps/loongarch/jmpbuf-unwind.h: Likewise. * sysdeps/loongarch/ldsodefs.h: Likewise. * sysdeps/loongarch/linkmap.h: Likewise. * sysdeps/loongarch/machine-gmon.h: Likewise. * sysdeps/loongarch/memusage.h: Likewise. * sysdeps/loongarch/setjmp.S: Likewise. * sysdeps/loongarch/sotruss-lib.c: Likewise. * sysdeps/loongarch/start.S: Likewise. * sysdeps/loongarch/sys/asm.h: Likewise. * sysdeps/loongarch/tls-macros.h: Likewise. * sysdeps/loongarch/tst-audit.h: Likewise. * sysdeps/unix/sysv/linux/loongarch/localplt.data: Likewise. * sysdeps/unix/sysv/linux/loongarch/lp64/jmp_buf-macros.h: Likewise. --- 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/bits/wordsize.h | 25 ++ sysdeps/loongarch/dl-machine.h | 365 ++++++++++++++++++ sysdeps/loongarch/dl-trampoline.S | 108 ++++++ sysdeps/loongarch/gccframe.h | 21 + sysdeps/loongarch/jmpbuf-offsets.h | 22 ++ sysdeps/loongarch/jmpbuf-unwind.h | 44 +++ sysdeps/loongarch/ldsodefs.h | 46 +++ sysdeps/loongarch/linkmap.h | 4 + sysdeps/loongarch/machine-gmon.h | 37 ++ sysdeps/loongarch/memusage.h | 25 ++ sysdeps/loongarch/setjmp.S | 53 +++ sysdeps/loongarch/sotruss-lib.c | 50 +++ sysdeps/loongarch/start.S | 72 ++++ sysdeps/loongarch/sys/asm.h | 67 ++++ sysdeps/loongarch/tls-macros.h | 49 +++ sysdeps/loongarch/tst-audit.h | 23 ++ .../unix/sysv/linux/loongarch/localplt.data | 19 + .../linux/loongarch/lp64/jmp_buf-macros.h | 43 +++ 22 files changed, 1231 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/bits/wordsize.h create mode 100644 sysdeps/loongarch/dl-machine.h create mode 100644 sysdeps/loongarch/dl-trampoline.S create mode 100644 sysdeps/loongarch/gccframe.h 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/memusage.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/tls-macros.h create mode 100644 sysdeps/loongarch/tst-audit.h create mode 100644 sysdeps/unix/sysv/linux/loongarch/localplt.data create mode 100644 sysdeps/unix/sysv/linux/loongarch/lp64/jmp_buf-macros.h diff --git a/sysdeps/loongarch/__longjmp.S b/sysdeps/loongarch/__longjmp.S new file mode 100644 index 0000000000..32325753f6 --- /dev/null +++ b/sysdeps/loongarch/__longjmp.S @@ -0,0 +1,50 @@ +/* longjmp, LoongArch version. + Copyright (C) 2021 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 + + 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.d 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..0e5fb2aaab --- /dev/null +++ b/sysdeps/loongarch/bits/link.h @@ -0,0 +1,58 @@ +/* Machine-specific declarations for dynamic linker interface. LoongArch + version. Copyright (C) 2021 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..4b1440e07d --- /dev/null +++ b/sysdeps/loongarch/bits/setjmp.h @@ -0,0 +1,39 @@ +/* Define the machine-dependent type `jmp_buf'. LoongArch version. + Copyright (C) 2021 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]; + + /* Callee-saved floating point registers. */ + double __fpregs[8]; +} __jmp_buf[1]; + +#endif /* _LOONGARCH_BITS_SETJMP_H */ diff --git a/sysdeps/loongarch/bits/wordsize.h b/sysdeps/loongarch/bits/wordsize.h new file mode 100644 index 0000000000..e12709cc65 --- /dev/null +++ b/sysdeps/loongarch/bits/wordsize.h @@ -0,0 +1,25 @@ +/* Determine the wordsize from the preprocessor defines. LoongArch version + Copyright (C) 2021 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 + . */ + +#ifdef __LP64__ +#define __WORDSIZE 64 +#else +#define __WORDSIZE 32 +#endif + +#define __WORDSIZE_TIME64_COMPAT32 0 diff --git a/sysdeps/loongarch/dl-machine.h b/sysdeps/loongarch/dl-machine.h new file mode 100644 index 0000000000..5f2656e574 --- /dev/null +++ b/sysdeps/loongarch/dl-machine.h @@ -0,0 +1,365 @@ +/* Machine-dependent ELF dynamic relocation inline functions. LoongArch + version. Copyright (C) 2021 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 + +#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; + +#ifdef _ABILP64 + if ((ehdr->e_flags & EF_LARCH_ABI) != EF_LARCH_ABI_LP64) +#elif defined _ABILP32 + if ((ehdr->e_flags & EF_LARCH_ABI) != EF_LARCH_ABI_LP32) +#else +#error "Unknown ABI" +#endif + 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__ + +/* 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. */ + +auto inline void __attribute__ ((always_inline)) +elf_machine_rela (struct link_map *map, const ElfW (Rela) * reloc, + const ElfW (Sym) * sym, + const struct r_found_version *version, + void *const reloc_addr, int skip_ifunc) +{ + ElfW (Addr) r_info = reloc->r_info; + const unsigned long int r_type = ELFW (R_TYPE) (r_info); + ElfW (Addr) *addr_field = (ElfW (Addr) *) reloc_addr; + const ElfW (Sym) *const __attribute__ ((unused)) refsym = sym; + struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type); + ElfW (Addr) value = 0; + if (sym_map != NULL) + value = 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; + value = ((ElfW (Addr) (*) (void)) value) (); + *addr_field = value; + break; + + case R_LARCH_NONE: + break; + + default: + _dl_reloc_bad_type (map, r_type, 0); + break; + } +} + +auto inline void __attribute__ ((always_inline)) +elf_machine_rela_relative (ElfW (Addr) l_addr, const ElfW (Rela) * reloc, + void *const reloc_addr) +{ + *(ElfW (Addr) *) reloc_addr = l_addr + reloc->r_addend; +} + +auto inline void __attribute__ ((always_inline)) +elf_machine_lazy_rel (struct link_map *map, ElfW (Addr) l_addr, + const ElfW (Rela) * reloc, int skip_ifunc) +{ + ElfW (Addr) *const reloc_addr = (void *) (l_addr + reloc->r_offset); + const unsigned int r_type = ELFW (R_TYPE) (reloc->r_info); + + /* Check for unexpected PLT reloc type. */ + if (__glibc_likely (r_type == R_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. */ + +auto inline int __attribute__ ((always_inline)) +elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) +{ +#ifndef RTLD_BOOTSTRAP + /* If using PLTs, fill in the first two entries of .got.plt. */ + if (l->l_info[DT_JMPREL]) + { + extern void _dl_runtime_resolve (void) + __attribute__ ((visibility ("hidden"))); + ElfW (Addr) *gotplt = (ElfW (Addr) *) D_PTR (l, l_info[DT_PLTGOT]); + /* If a library is prelinked but we have to relocate anyway, + we have to be able to undo the prelinking of .got.plt. + The prelinker saved the address of .plt for us here. */ + if (gotplt[1]) + l->l_mach.plt = gotplt[1] + l->l_addr; + gotplt[0] = (ElfW (Addr)) & _dl_runtime_resolve; + gotplt[1] = (ElfW (Addr)) l; + } +#endif + + return lazy; +} + +#endif /* RESOLVE_MAP */ diff --git a/sysdeps/loongarch/dl-trampoline.S b/sysdeps/loongarch/dl-trampoline.S new file mode 100644 index 0000000000..e7dc68a1b0 --- /dev/null +++ b/sysdeps/loongarch/dl-trampoline.S @@ -0,0 +1,108 @@ +/* PLT trampolines. LoongArch version. + Copyright (C) 2021 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. */ +#if _LOONGARCH_SIM == _ABILP64 + addi.d sp, sp, -FRAME_SIZE +#elif _LOONGARCH_SIM == _ABILP32 + addi.w sp, sp, -FRAME_SIZE +#endif + + 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 */ +#if _LOONGARCH_SIM == _ABILP64 + slli.d a1, t1, 1 + or a0, t0, zero + add.d a1, a1, t1 + la a2, _dl_fixup + jirl ra, a2, 0 + or t1, v0, zero +#elif _LOONGARCH_SIM == _ABILP32 + slli.w a1, t1, 1 + or a0, t0, zero + add.w a1, a1, t1 + la a2, _dl_fixup + jirl ra, a2, 0 + or t1, v0, zero +#endif + + /* 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 + +#if _LOONGARCH_SIM == _ABILP64 + addi.d sp, sp, FRAME_SIZE +#elif _LOONGARCH_SIM == _ABILP32 + addi.w sp, sp, FRAME_SIZE +#endif + + /* Invoke the callee. */ + jirl zero, t1, 0 +END (_dl_runtime_resolve) diff --git a/sysdeps/loongarch/gccframe.h b/sysdeps/loongarch/gccframe.h new file mode 100644 index 0000000000..01d381e0b3 --- /dev/null +++ b/sysdeps/loongarch/gccframe.h @@ -0,0 +1,21 @@ +/* Definition of object in frame unwind info. LoongArch version. + Copyright (C) 2021 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 FIRST_PSEUDO_REGISTER 74 + +#include diff --git a/sysdeps/loongarch/jmpbuf-offsets.h b/sysdeps/loongarch/jmpbuf-offsets.h new file mode 100644 index 0000000000..d70e9f0b7e --- /dev/null +++ b/sysdeps/loongarch/jmpbuf-offsets.h @@ -0,0 +1,22 @@ +/* Private macros for accessing __jmp_buf contents. LoongArch version. + Copyright (C) 2021 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..2810853cf6 --- /dev/null +++ b/sysdeps/loongarch/jmpbuf-unwind.h @@ -0,0 +1,44 @@ +/* Copyright (C) 2021 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..0fd3bbd2c7 --- /dev/null +++ b/sysdeps/loongarch/ldsodefs.h @@ -0,0 +1,46 @@ +/* Run-time dynamic linker data structures for loaded ELF shared objects. + LoongArch version. + Copyright (C) 2021 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 *); + +/* The LoongArch ABI specifies that the dynamic section has to be read-only. */ + +#define DL_RO_DYN_SECTION 1 + +#include_next + +#endif diff --git a/sysdeps/loongarch/linkmap.h b/sysdeps/loongarch/linkmap.h new file mode 100644 index 0000000000..f88ce50162 --- /dev/null +++ b/sysdeps/loongarch/linkmap.h @@ -0,0 +1,4 @@ +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..d330fd6e79 --- /dev/null +++ b/sysdeps/loongarch/machine-gmon.h @@ -0,0 +1,37 @@ +/* LoongArch definitions for profiling support. + Copyright (C) 2021 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/memusage.h b/sysdeps/loongarch/memusage.h new file mode 100644 index 0000000000..c79d0ecb82 --- /dev/null +++ b/sysdeps/loongarch/memusage.h @@ -0,0 +1,25 @@ +/* Machine-specific definitions for memory usage profiling, LoongArch version. + Copyright (C) 2021 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 GETSP() \ + ({ \ + register uintptr_t stack_ptr asm("$sp"); \ + stack_ptr; \ + }) + +#include diff --git a/sysdeps/loongarch/setjmp.S b/sysdeps/loongarch/setjmp.S new file mode 100644 index 0000000000..589a35c11a --- /dev/null +++ b/sysdeps/loongarch/setjmp.S @@ -0,0 +1,53 @@ +/* setjmp for LoongArch. + Copyright (C) 2021 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 (__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(rtld) + li.w v0, 0 + jirl zero,ra,0 +#else + b C_SYMBOL_NAME(__sigjmp_save) +#endif +END (__sigsetjmp) +hidden_def (__sigsetjmp) diff --git a/sysdeps/loongarch/sotruss-lib.c b/sysdeps/loongarch/sotruss-lib.c new file mode 100644 index 0000000000..8a7a438ba0 --- /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) 2021 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..b008b195af --- /dev/null +++ b/sysdeps/loongarch/start.S @@ -0,0 +1,72 @@ +/* Startup code compliant to the ELF LoongArch ABI. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + Contributed by Loongson Technology Corporation Limited. + + 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 +#if _LOONGARCH_SIM == _ABILP64 + ld.d a1, sp, 0 + addi.d a2, sp, SZREG +#elif _LOONGARCH_SIM == _ABILP32 + ld.w a1, sp, 0 + addi.w a2, sp, SZREG +#endif + /* Adjust $sp for 16-aligned */ + srli.d sp, sp, 4 + slli.d 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..35ab3892fa --- /dev/null +++ b/sysdeps/loongarch/sys/asm.h @@ -0,0 +1,67 @@ +/* Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + Contributed by Loongson Technology Corporation Limited. + + 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. */ +#if _LOONGARCH_SIM == _ABILP64 +#define PTRLOG 3 +#define SZREG 8 +#define SZFREG 8 +#define REG_L ld.d +#define REG_S st.d +#define FREG_L fld.d +#define FREG_S fst.d +#elif _LOONGARCH_SIM == _ABILP32 +#define PTRLOG 2 +#define SZREG 4 +#define SZFREG 4 +#define REG_L ld.w +#define REG_S st.w +#define FREG_L fld.w +#define FREG_S fst.w +#else +#error _LOONGARCH_SIM must equal _ABILP32 or _ABILP64 +#endif + +/* 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/tls-macros.h b/sysdeps/loongarch/tls-macros.h new file mode 100644 index 0000000000..af5eb6b700 --- /dev/null +++ b/sysdeps/loongarch/tls-macros.h @@ -0,0 +1,49 @@ +/* Macros to support TLS testing in times of missing compiler support. + Copyright (C) 2021 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 "dl-tls.h" + +#define TLS_GD(x) \ + ({ \ + void *__result; \ + asm("la.tls.gd %0, " #x "\n\t" : "=r"(__result)); \ + __tls_get_addr (__result); \ + }) + +#define TLS_LD(x) TLS_GD (x) + +#define TLS_IE(x) \ + ({ \ + void *__result; \ + asm("la.tls.ie %0, " #x "\n\t" \ + "add.d %0, %0, $tp\n\t" \ + : "=r"(__result)); \ + __result; \ + }) + +#define TLS_LE(x) \ + ({ \ + void *__result; \ + asm("la.tls.le %0, " #x "\n\t" \ + "add.d %0, %0, $tp\n\t" \ + : "=r"(__result)); \ + __result; \ + }) diff --git a/sysdeps/loongarch/tst-audit.h b/sysdeps/loongarch/tst-audit.h new file mode 100644 index 0000000000..725efc8690 --- /dev/null +++ b/sysdeps/loongarch/tst-audit.h @@ -0,0 +1,23 @@ +/* Definitions for testing PLT entry/exit auditing. LoongArch version. + Copyright (C) 2021 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/localplt.data b/sysdeps/unix/sysv/linux/loongarch/localplt.data new file mode 100644 index 0000000000..14c02cb2d6 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/localplt.data @@ -0,0 +1,19 @@ +# See scripts/check-localplt.awk for how this file is processed. +# PLT use is required for the malloc family and for matherr because +# users can define their own functions and have library internals call them. +libc.so: calloc +libc.so: free +libc.so: malloc +libc.so: memalign +libc.so: realloc +# The main malloc is interposed into the dynamic linker, for +# allocations after the initial link (when dlopen is used). +ld.so: malloc +ld.so: calloc +ld.so: realloc +ld.so: free +# The TLS-enabled version of these functions is interposed from libc.so. +ld.so: _dl_signal_error +ld.so: _dl_catch_error +ld.so: _dl_signal_exception +ld.so: _dl_catch_exception diff --git a/sysdeps/unix/sysv/linux/loongarch/lp64/jmp_buf-macros.h b/sysdeps/unix/sysv/linux/loongarch/lp64/jmp_buf-macros.h new file mode 100644 index 0000000000..b1422273c5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/lp64/jmp_buf-macros.h @@ -0,0 +1,43 @@ +/* Copyright (C) 2021 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 + . */ + +/* Produced by this program: + + #include + #include + #include + #include + + int main (int argc, char **argv) + { + printf ("#define JMP_BUF_SIZE %d\n", sizeof (jmp_buf)); + printf ("#define JMP_BUF_ALIGN %d\n", __alignof__ (jmp_buf)); + printf ("#define SIGJMP_BUF_SIZE %d\n", sizeof (sigjmp_buf)); + printf ("#define SIGJMP_BUF_ALIGN %d\n", __alignof__ (sigjmp_buf)); + printf ("#define MASK_WAS_SAVED_OFFSET %d\n", + offsetof (struct __jmp_buf_tag, __mask_was_saved)); + printf ("#define SAVED_MASK_OFFSET %d\n", + offsetof (struct __jmp_buf_tag, __saved_mask)); + } */ + +#define JMP_BUF_SIZE 304 +#define JMP_BUF_ALIGN 8 +#define SIGJMP_BUF_SIZE 304 +#define SIGJMP_BUF_ALIGN 8 +#define MASK_WAS_SAVED_OFFSET 168 +#define SAVED_MASK_OFFSET 176