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Tue, 19 Jul 2022 09:21:03 +0800 (CST) From: caiyinyu To: adhemerval.zanella@linaro.org, libc-alpha@sourceware.org, joseph_myers@mentor.com, carlos@redhat.com, i.swmail@xen0n.name Subject: [PATCH v7 03/13] LoongArch: ABI Implementation Date: Tue, 19 Jul 2022 09:20:46 +0800 Message-Id: <20220719012056.1461897-4-caiyinyu@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220719012056.1461897-1-caiyinyu@loongson.cn> References: <20220719012056.1461897-1-caiyinyu@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf9Dxf+P5BtZicpcnAA--.9695S5 X-Coremail-Antispam: 1UD129KBjvAXoWfur48KFW8Zr4xKFyDCFyrXrb_yoWrJr47Zo WfuFW3Jr48Krs7Crs8KwsrXr9rWr4jgrZrZ3y3Z397GFy0yr15GFyFy3WYqrZrCr1kWFs5 XFySqFZrAFWI9rn3n29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73VFW2AGmfu7bjvjm3 AaLaJ3UjIYCTnIWjp_UUUYu7AC8VAFwI0_Wr0E3s1l1xkIjI8I6I8E6xAIw20EY4v20xva j40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l82xGYIkIc2x26280x7IE14v26r1rM28IrcIa0x kI8VCY1x0267AKxVW8JVW5JwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84AC jcxK6xIIjxv20xvE14v26F1j6w1UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26F4j6r4UJw A2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26r4UJVWx Jr1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2I x0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8 JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lc2xSY4AK6svPMxAIw2 8IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4l x2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrw CI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI 42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z2 80aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7VUjw0eJUUUUU== X-CM-SenderInfo: 5fdl5xhq1xqz5rrqw2lrqou0/ X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, KAM_SHORT, KAM_STOCKGEN, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) 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: , Cc: caiyinyu Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" --- sysdeps/loongarch/__longjmp.S | 50 +++++ sysdeps/loongarch/bits/endianness.h | 11 ++ sysdeps/loongarch/bits/link.h | 58 ++++++ sysdeps/loongarch/bits/setjmp.h | 39 ++++ sysdeps/loongarch/bsd-_setjmp.c | 1 + sysdeps/loongarch/bsd-setjmp.c | 1 + sysdeps/loongarch/dl-machine.h | 288 ++++++++++++++++++++++++++++ sysdeps/loongarch/dl-trampoline.S | 83 ++++++++ sysdeps/loongarch/jmpbuf-offsets.h | 22 +++ sysdeps/loongarch/jmpbuf-unwind.h | 45 +++++ sysdeps/loongarch/ldsodefs.h | 41 ++++ sysdeps/loongarch/linkmap.h | 22 +++ sysdeps/loongarch/machine-gmon.h | 37 ++++ sysdeps/loongarch/setjmp.S | 64 +++++++ sysdeps/loongarch/sotruss-lib.c | 50 +++++ sysdeps/loongarch/start.S | 66 +++++++ sysdeps/loongarch/sys/asm.h | 59 ++++++ sysdeps/loongarch/tst-audit.h | 23 +++ 18 files changed, 960 insertions(+) create mode 100644 sysdeps/loongarch/__longjmp.S create mode 100644 sysdeps/loongarch/bits/endianness.h create mode 100644 sysdeps/loongarch/bits/link.h create mode 100644 sysdeps/loongarch/bits/setjmp.h create mode 100644 sysdeps/loongarch/bsd-_setjmp.c create mode 100644 sysdeps/loongarch/bsd-setjmp.c create mode 100644 sysdeps/loongarch/dl-machine.h create mode 100644 sysdeps/loongarch/dl-trampoline.S create mode 100644 sysdeps/loongarch/jmpbuf-offsets.h create mode 100644 sysdeps/loongarch/jmpbuf-unwind.h create mode 100644 sysdeps/loongarch/ldsodefs.h create mode 100644 sysdeps/loongarch/linkmap.h create mode 100644 sysdeps/loongarch/machine-gmon.h create mode 100644 sysdeps/loongarch/setjmp.S create mode 100644 sysdeps/loongarch/sotruss-lib.c create mode 100644 sysdeps/loongarch/start.S create mode 100644 sysdeps/loongarch/sys/asm.h create mode 100644 sysdeps/loongarch/tst-audit.h Reviewed-by: Adhemerval Zanella diff --git a/sysdeps/loongarch/__longjmp.S b/sysdeps/loongarch/__longjmp.S new file mode 100644 index 0000000000..37e7384413 --- /dev/null +++ b/sysdeps/loongarch/__longjmp.S @@ -0,0 +1,50 @@ +/* longjmp. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#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 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..05c91575e9 --- /dev/null +++ b/sysdeps/loongarch/bits/link.h @@ -0,0 +1,58 @@ +/* Machine-specific declarations for dynamic linker interface. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#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..42f8fa7657 --- /dev/null +++ b/sysdeps/loongarch/bits/setjmp.h @@ -0,0 +1,39 @@ +/* Define the machine-dependent type `jmp_buf'. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#ifndef _LOONGARCH_BITS_SETJMP_H +#define _LOONGARCH_BITS_SETJMP_H + +typedef struct __jmp_buf_internal_tag +{ + /* Program counter. */ + long int __pc; + /* Stack pointer. */ + long int __sp; + /* Reserved */ + long int __x; + /* Frame pointer. */ + long int __fp; + /* Callee-saved registers. */ + long int __regs[9]; + /* Callee-saved floating point registers. */ + double __fpregs[8]; + +} __jmp_buf[1]; + +#endif /* _LOONGARCH_BITS_SETJMP_H */ diff --git a/sysdeps/loongarch/bsd-_setjmp.c b/sysdeps/loongarch/bsd-_setjmp.c new file mode 100644 index 0000000000..32f49441c3 --- /dev/null +++ b/sysdeps/loongarch/bsd-_setjmp.c @@ -0,0 +1 @@ +/* _setjmp is implemented in setjmp.S. */ diff --git a/sysdeps/loongarch/bsd-setjmp.c b/sysdeps/loongarch/bsd-setjmp.c new file mode 100644 index 0000000000..45fd802aac --- /dev/null +++ b/sysdeps/loongarch/bsd-setjmp.c @@ -0,0 +1 @@ +/* setjmp is implemented in setjmp.S. */ diff --git a/sysdeps/loongarch/dl-machine.h b/sysdeps/loongarch/dl-machine.h new file mode 100644 index 0000000000..c69c72d0ff --- /dev/null +++ b/sysdeps/loongarch/dl-machine.h @@ -0,0 +1,288 @@ +/* Machine-dependent ELF dynamic relocation inline functions. + Copyright (C) 2022 Free Software Foundation, Inc. + + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#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)) \ + | (ELF_RTYPE_CLASS_COPY *((type) == R_LARCH_COPY))) + +#define ELF_MACHINE_NO_REL 1 +#define ELF_MACHINE_NO_RELA 0 + +/* Return nonzero iff ELF header is compatible with the running host. */ +static inline int +elf_machine_matches_host (const ElfW (Ehdr) *ehdr) +{ + /* We can only run LoongArch binaries. */ + if (ehdr->e_machine != EM_LOONGARCH) + return 0; + + return 1; +} + +/* Return the run-time load address of the shared object. */ +static inline ElfW (Addr) elf_machine_load_address (void) +{ + extern const ElfW(Ehdr) __ehdr_start attribute_hidden; + return (ElfW(Addr)) &__ehdr_start; +} + +/* Return the link-time address of _DYNAMIC. */ +static inline ElfW (Addr) elf_machine_dynamic (void) +{ + extern ElfW(Dyn) _DYNAMIC[] attribute_hidden; + return (ElfW(Addr)) _DYNAMIC - elf_machine_load_address (); +} + +/* Initial entry point code for the dynamic linker. + The C function `_dl_start' is the real entry point; + its return value is the user program's entry point. */ + +#define RTLD_START asm (\ + ".text\n\ + " _RTLD_PROLOGUE (ENTRY_POINT) "\ + .cfi_label .Ldummy \n\ + " CFI_UNDEFINED (1) " \n\ + or $a0, $sp, $zero \n\ + bl _dl_start \n\ + # Stash user entry point in s0. \n\ + or $s0, $v0, $zero \n\ + # Load the original argument count. \n\ + ld.d $a1, $sp, 0 \n\ + # Call _dl_init (struct link_map *main_map, int argc, \ + char **argv, char **env) \n\ + la $a0, _rtld_local \n\ + ld.d $a0, $a0, 0 \n\ + addi.d $a2, $sp, 8 \n\ + slli.d $a3, $a1, 3 \n\ + add.d $a3, $a3, $a2 \n\ + addi.d $a3, $a3, 8 \n\ + # Stash the stack pointer in s1.\n\ + or $s1, $sp, $zero \n\ + # Adjust $sp for 16-aligned \n\ + bstrins.d $sp, $zero, 3, 0 \n\ + # Call the function to run the initializers. \n\ + bl _dl_init \n\ + # Restore the stack pointer for _start.\n\ + or $sp, $s1, $zero \n\ + # Pass our finalizer function to _start. \n\ + la $a0, _dl_fini \n\ + # Jump to the user entry point. \n\ + jirl $zero, $s0, 0 \n\ + " _RTLD_EPILOGUE (ENTRY_POINT) "\ + .previous"); + +/* Names of the architecture-specific auditing callback functions. */ +#define ARCH_LA_PLTENTER loongarch_gnu_pltenter +#define ARCH_LA_PLTEXIT loongarch_gnu_pltexit + +/* Bias .got.plt entry by the offset requested by the PLT header. */ +#define elf_machine_plt_value(map, reloc, value) (value) + +static inline ElfW (Addr) +elf_machine_fixup_plt (struct link_map *map, lookup_t t, + const ElfW (Sym) *refsym, const ElfW (Sym) *sym, + const ElfW (Rela) *reloc, ElfW (Addr) *reloc_addr, + ElfW (Addr) value) +{ + return *reloc_addr = value; +} + +#endif /* !dl_machine_h */ + +#ifdef RESOLVE_MAP + +/* Perform a relocation described by R_INFO at the location pointed to + by RELOC_ADDR. SYM is the relocation symbol specified by R_INFO and + MAP is the object containing the reloc. */ + +static inline void __attribute__ ((always_inline)) +elf_machine_rela (struct link_map *map, struct r_scope_elem *scope[], + const ElfW (Rela) *reloc, + const ElfW (Sym) *sym, + const struct r_found_version *version, + void *const reloc_addr, int skip_ifunc) +{ + ElfW (Addr) r_info = reloc->r_info; + const unsigned long int r_type = ELFW (R_TYPE) (r_info); + ElfW (Addr) *addr_field = (ElfW (Addr) *) reloc_addr; + const ElfW (Sym) *const __attribute__ ((unused)) refsym = sym; + struct link_map *sym_map = RESOLVE_MAP (map, scope, &sym, version, r_type); + ElfW (Addr) value = 0; + if (sym_map != NULL) + value = SYMBOL_ADDRESS (sym_map, sym, true) + reloc->r_addend; + + if (sym != NULL + && __glibc_unlikely (ELFW (ST_TYPE) (sym->st_info) == STT_GNU_IFUNC) + && __glibc_likely (sym->st_shndx != SHN_UNDEF) + && __glibc_likely (!skip_ifunc)) + value = ((ElfW (Addr) (*) (int)) value) (GLRO (dl_hwcap)); + + switch (r_type) + { + + case R_LARCH_JUMP_SLOT: + case __WORDSIZE == 64 ? R_LARCH_64: + R_LARCH_32: + *addr_field = value; + break; + + case R_LARCH_NONE: + break; + +#ifndef RTLD_BOOTSTRAP + case __WORDSIZE == 64 ? R_LARCH_TLS_DTPMOD64: + R_LARCH_TLS_DTPMOD32: + *addr_field = sym_map->l_tls_modid; + break; + + case __WORDSIZE == 64 ? R_LARCH_TLS_DTPREL64: + R_LARCH_TLS_DTPREL32: + *addr_field = TLS_DTPREL_VALUE (sym) + reloc->r_addend; + break; + + case __WORDSIZE == 64 ? R_LARCH_TLS_TPREL64: + R_LARCH_TLS_TPREL32: + CHECK_STATIC_TLS (map, sym_map); + *addr_field = TLS_TPREL_VALUE (sym_map, sym) + reloc->r_addend; + break; + + case R_LARCH_COPY: + { + if (sym == NULL) + /* This can happen in trace mode if an object could not be + found. */ + break; + if (__glibc_unlikely (sym->st_size > refsym->st_size) + || (__glibc_unlikely (sym->st_size < refsym->st_size) + && GLRO(dl_verbose))) + { + const char *strtab; + + strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]); + _dl_error_printf ("\ +%s: Symbol `%s' has different size in shared object, consider re-linking\n", + rtld_progname ?: "", + strtab + refsym->st_name); + } + memcpy (reloc_addr, (void *) value, + MIN (sym->st_size, refsym->st_size)); + break; + } + + case R_LARCH_RELATIVE: + *addr_field = map->l_addr + reloc->r_addend; + break; + + case R_LARCH_IRELATIVE: + value = map->l_addr + reloc->r_addend; + if (__glibc_likely (!skip_ifunc)) + value = ((ElfW (Addr) (*) (void)) value) (); + *addr_field = value; + break; + +#endif + + default: + _dl_reloc_bad_type (map, r_type, 0); + break; + } +} + +static inline void __attribute__ ((always_inline)) +elf_machine_rela_relative (ElfW (Addr) l_addr, const ElfW (Rela) *reloc, + void *const reloc_addr) +{ + *(ElfW (Addr) *) reloc_addr = l_addr + reloc->r_addend; +} + +static inline void __attribute__ ((always_inline)) +elf_machine_lazy_rel (struct link_map *map, struct r_scope_elem *scope[], + ElfW (Addr) l_addr, + const ElfW (Rela) *reloc, int skip_ifunc) +{ + ElfW (Addr) *const reloc_addr = (void *) (l_addr + reloc->r_offset); + const unsigned int r_type = ELFW (R_TYPE) (reloc->r_info); + + /* Check for unexpected PLT reloc type. */ + if (__glibc_likely (r_type == R_LARCH_JUMP_SLOT)) + { + if (__glibc_unlikely (map->l_mach.plt == 0)) + { + if (l_addr) + *reloc_addr += l_addr; + } + else + *reloc_addr = map->l_mach.plt; + } + else + _dl_reloc_bad_type (map, r_type, 1); +} + +/* Set up the loaded object described by L so its stub function + will jump to the on-demand fixup code __dl_runtime_resolve. */ + +static inline int __attribute__ ((always_inline)) +elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[], + int lazy, int profile) +{ +#ifndef RTLD_BOOTSTRAP + /* If using PLTs, fill in the first two entries of .got.plt. */ + if (l->l_info[DT_JMPREL]) + { + extern void _dl_runtime_resolve (void) + __attribute__ ((visibility ("hidden"))); + ElfW (Addr) *gotplt = (ElfW (Addr) *) D_PTR (l, l_info[DT_PLTGOT]); + gotplt[0] = (ElfW (Addr)) & _dl_runtime_resolve; + gotplt[1] = (ElfW (Addr)) l; + } +#endif + + return lazy; +} + +#endif /* RESOLVE_MAP */ diff --git a/sysdeps/loongarch/dl-trampoline.S b/sysdeps/loongarch/dl-trampoline.S new file mode 100644 index 0000000000..ad8ab0fda7 --- /dev/null +++ b/sysdeps/loongarch/dl-trampoline.S @@ -0,0 +1,83 @@ +/* PLT trampolines. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#include +#include + +/* Assembler veneer called from the PLT header code for lazy loading. + The PLT header passes its own args in t0-t2. */ + +# define FRAME_SIZE (-((-10 * SZREG - 8 * SZFREG) & ALMASK)) + +ENTRY (_dl_runtime_resolve) + + /* Save arguments to stack. */ + ADDI sp, sp, -FRAME_SIZE + + REG_S ra, sp, 9*SZREG + REG_S a0, sp, 1*SZREG + REG_S a1, sp, 2*SZREG + REG_S a2, sp, 3*SZREG + REG_S a3, sp, 4*SZREG + REG_S a4, sp, 5*SZREG + REG_S a5, sp, 6*SZREG + REG_S a6, sp, 7*SZREG + REG_S a7, sp, 8*SZREG + + FREG_S fa0, sp, 10*SZREG + 0*SZFREG + FREG_S fa1, sp, 10*SZREG + 1*SZFREG + FREG_S fa2, sp, 10*SZREG + 2*SZFREG + FREG_S fa3, sp, 10*SZREG + 3*SZFREG + FREG_S fa4, sp, 10*SZREG + 4*SZFREG + FREG_S fa5, sp, 10*SZREG + 5*SZFREG + FREG_S fa6, sp, 10*SZREG + 6*SZFREG + FREG_S fa7, sp, 10*SZREG + 7*SZFREG + + /* Update .got.plt and obtain runtime address of callee */ + SLLI a1, t1, 1 + or a0, t0, zero + ADD a1, a1, t1 + la a2, _dl_fixup + jirl ra, a2, 0 + or t1, v0, zero + + /* Restore arguments from stack. */ + REG_L ra, sp, 9*SZREG + REG_L a0, sp, 1*SZREG + REG_L a1, sp, 2*SZREG + REG_L a2, sp, 3*SZREG + REG_L a3, sp, 4*SZREG + REG_L a4, sp, 5*SZREG + REG_L a5, sp, 6*SZREG + REG_L a6, sp, 7*SZREG + REG_L a7, sp, 8*SZREG + + FREG_L fa0, sp, 10*SZREG + 0*SZFREG + FREG_L fa1, sp, 10*SZREG + 1*SZFREG + FREG_L fa2, sp, 10*SZREG + 2*SZFREG + FREG_L fa3, sp, 10*SZREG + 3*SZFREG + FREG_L fa4, sp, 10*SZREG + 4*SZFREG + FREG_L fa5, sp, 10*SZREG + 5*SZFREG + FREG_L fa6, sp, 10*SZREG + 6*SZFREG + FREG_L fa7, sp, 10*SZREG + 7*SZFREG + + ADDI sp, sp, FRAME_SIZE + + /* Invoke the callee. */ + jirl zero, t1, 0 +END (_dl_runtime_resolve) diff --git a/sysdeps/loongarch/jmpbuf-offsets.h b/sysdeps/loongarch/jmpbuf-offsets.h new file mode 100644 index 0000000000..a4b8ea690e --- /dev/null +++ b/sysdeps/loongarch/jmpbuf-offsets.h @@ -0,0 +1,22 @@ +/* Private macros for accessing __jmp_buf contents. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#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..3afb9f3948 --- /dev/null +++ b/sysdeps/loongarch/setjmp.S @@ -0,0 +1,64 @@ +/* setjmp for LoongArch. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#include +#include + +ENTRY (_setjmp) + li.w a1,0 + b HIDDEN_JUMPTARGET (__sigsetjmp) +END (_setjmp) + +ENTRY (setjmp) + li.w a1,1 +END (setjmp) + +ENTRY (__sigsetjmp) + REG_S ra, a0, 0*SZREG + REG_S sp, a0, 1*SZREG + REG_S x, a0, 2*SZREG + REG_S fp, a0, 3*SZREG + REG_S s0, a0, 4*SZREG + REG_S s1, a0, 5*SZREG + REG_S s2, a0, 6*SZREG + REG_S s3, a0, 7*SZREG + REG_S s4, a0, 8*SZREG + REG_S s5, a0, 9*SZREG + REG_S s6, a0, 10*SZREG + REG_S s7, a0, 11*SZREG + REG_S s8, a0, 12*SZREG + + FREG_S $f24, a0, 13*SZREG + 0*SZFREG + FREG_S $f25, a0, 13*SZREG + 1*SZFREG + FREG_S $f26, a0, 13*SZREG + 2*SZFREG + FREG_S $f27, a0, 13*SZREG + 3*SZFREG + FREG_S $f28, a0, 13*SZREG + 4*SZFREG + FREG_S $f29, a0, 13*SZREG + 5*SZFREG + FREG_S $f30, a0, 13*SZREG + 6*SZFREG + FREG_S $f31, a0, 13*SZREG + 7*SZFREG + +#if !IS_IN (libc) && IS_IN(rtld) + li.w v0, 0 + jirl zero,ra,0 +#else + b __sigjmp_save +#endif +END (__sigsetjmp) + +hidden_def (__sigsetjmp) +weak_alias (_setjmp, __GI__setjmp) diff --git a/sysdeps/loongarch/sotruss-lib.c b/sysdeps/loongarch/sotruss-lib.c new file mode 100644 index 0000000000..ce752785f6 --- /dev/null +++ b/sysdeps/loongarch/sotruss-lib.c @@ -0,0 +1,50 @@ +/* Override generic sotruss-lib.c to define actual functions for LoongArch. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#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..280b5fab8c --- /dev/null +++ b/sysdeps/loongarch/start.S @@ -0,0 +1,66 @@ +/* Startup code compliant to the ELF LoongArch ABI. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#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 */ + BSTRINS sp, zero, 3, 0 + + move a3, zero /* used to be init */ + move a4, zero /* used to be fini */ + or a6, sp, zero /* stack_end */ + + la.got ra, t0, __libc_start_main + jirl ra, ra, 0 + + la.got ra, t0, abort + jirl ra, ra, 0 +END (ENTRY_POINT) + diff --git a/sysdeps/loongarch/sys/asm.h b/sysdeps/loongarch/sys/asm.h new file mode 100644 index 0000000000..b41ee59694 --- /dev/null +++ b/sysdeps/loongarch/sys/asm.h @@ -0,0 +1,59 @@ +/* Miscellaneous macros. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#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