This code deals with the ARC ABI. Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx> --- sysdeps/arc/__longjmp.S | 50 ++++++++++++++++++++++ sysdeps/arc/abort-instr.h | 2 + sysdeps/arc/bits/endianness.h | 15 +++++++ sysdeps/arc/bits/setjmp.h | 26 ++++++++++++ sysdeps/arc/bsd-_setjmp.S | 1 + sysdeps/arc/bsd-setjmp.S | 1 + sysdeps/arc/dl-runtime.c | 33 +++++++++++++++ sysdeps/arc/dl-sysdep.h | 25 +++++++++++ sysdeps/arc/dl-trampoline.S | 80 +++++++++++++++++++++++++++++++++++ sysdeps/arc/gccframe.h | 21 +++++++++ sysdeps/arc/jmpbuf-offsets.h | 47 ++++++++++++++++++++ sysdeps/arc/jmpbuf-unwind.h | 47 ++++++++++++++++++++ sysdeps/arc/machine-gmon.h | 35 +++++++++++++++ sysdeps/arc/memusage.h | 23 ++++++++++ sysdeps/arc/setjmp.S | 66 +++++++++++++++++++++++++++++ sysdeps/arc/sysdep.h | 48 +++++++++++++++++++++ sysdeps/arc/tls-macros.h | 47 ++++++++++++++++++++ 17 files changed, 567 insertions(+) create mode 100644 sysdeps/arc/__longjmp.S create mode 100644 sysdeps/arc/abort-instr.h create mode 100644 sysdeps/arc/bits/endianness.h create mode 100644 sysdeps/arc/bits/setjmp.h create mode 100644 sysdeps/arc/bsd-_setjmp.S create mode 100644 sysdeps/arc/bsd-setjmp.S create mode 100644 sysdeps/arc/dl-runtime.c create mode 100644 sysdeps/arc/dl-sysdep.h create mode 100644 sysdeps/arc/dl-trampoline.S create mode 100644 sysdeps/arc/gccframe.h create mode 100644 sysdeps/arc/jmpbuf-offsets.h create mode 100644 sysdeps/arc/jmpbuf-unwind.h create mode 100644 sysdeps/arc/machine-gmon.h create mode 100644 sysdeps/arc/memusage.h create mode 100644 sysdeps/arc/setjmp.S create mode 100644 sysdeps/arc/sysdep.h create mode 100644 sysdeps/arc/tls-macros.h diff --git a/sysdeps/arc/__longjmp.S b/sysdeps/arc/__longjmp.S new file mode 100644 index 000000000000..ffc3daa7de72 --- /dev/null +++ b/sysdeps/arc/__longjmp.S @@ -0,0 +1,50 @@ +/* longjmp for ARC. + Copyright (C) 2017-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <jmpbuf-offsets.h> + +;@ r0 = jump buffer from which regs will be restored +;@ r1 = value that setjmp( ) will return due to this longjmp + +ENTRY (__longjmp) + + ld_s r13, [r0] + ld_s r14, [r0,4] + ld r15, [r0,8] + ld r16, [r0,12] + ld r17, [r0,16] + ld r18, [r0,20] + ld r19, [r0,24] + ld r20, [r0,28] + ld r21, [r0,32] + ld r22, [r0,36] + ld r23, [r0,40] + ld r24, [r0,44] + ld r25, [r0,48] + + ld blink, [r0,60] + ld fp, [r0,52] + ld sp, [r0,56] + + mov.f r0, r1 ; get the setjmp return value(due to longjmp) in place + + j.d [blink] ; to caller of setjmp location, right after the call + mov.z r0, 1 ; can't let setjmp return 0 when it is due to longjmp + +END (__longjmp) diff --git a/sysdeps/arc/abort-instr.h b/sysdeps/arc/abort-instr.h new file mode 100644 index 000000000000..49f33613c404 --- /dev/null +++ b/sysdeps/arc/abort-instr.h @@ -0,0 +1,2 @@ +/* FLAG 1 is privilege mode only instruction, hence will crash any program. */ +#define ABORT_INSTRUCTION asm ("flag 1") diff --git a/sysdeps/arc/bits/endianness.h b/sysdeps/arc/bits/endianness.h new file mode 100644 index 000000000000..8f17ca84b485 --- /dev/null +++ b/sysdeps/arc/bits/endianness.h @@ -0,0 +1,15 @@ +#ifndef _BITS_ENDIANNESS_H +#define _BITS_ENDIANNESS_H 1 + +#ifndef _BITS_ENDIAN_H +# error "Never use <bits/endian.h> directly; include <endian.h> instead." +#endif + +/* ARC has selectable endianness. */ +#ifdef __BIG_ENDIAN__ +# define __BYTE_ORDER __BIG_ENDIAN +#else +# define __BYTE_ORDER __LITTLE_ENDIAN +#endif + +#endif /* bits/endianness.h */ diff --git a/sysdeps/arc/bits/setjmp.h b/sysdeps/arc/bits/setjmp.h new file mode 100644 index 000000000000..333e5cce3bea --- /dev/null +++ b/sysdeps/arc/bits/setjmp.h @@ -0,0 +1,26 @@ +/* Define the machine-dependent type `jmp_buf'. ARC version. + Copyright (C) 1992-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef _ARC_BITS_SETJMP_H +#define _ARC_BITS_SETJMP_H 1 + +/* Saves r13-r25 (callee-saved), fp (frame pointer), sp (stack pointer), + blink (branch-n-link). */ +typedef long int __jmp_buf[32]; + +#endif diff --git a/sysdeps/arc/bsd-_setjmp.S b/sysdeps/arc/bsd-_setjmp.S new file mode 100644 index 000000000000..90b99cd8c3e0 --- /dev/null +++ b/sysdeps/arc/bsd-_setjmp.S @@ -0,0 +1 @@ +/* _setjmp is in setjmp.S. */ diff --git a/sysdeps/arc/bsd-setjmp.S b/sysdeps/arc/bsd-setjmp.S new file mode 100644 index 000000000000..d3b823c118bc --- /dev/null +++ b/sysdeps/arc/bsd-setjmp.S @@ -0,0 +1 @@ +/* setjmp is in setjmp.S. */ diff --git a/sysdeps/arc/dl-runtime.c b/sysdeps/arc/dl-runtime.c new file mode 100644 index 000000000000..b28da38329f1 --- /dev/null +++ b/sysdeps/arc/dl-runtime.c @@ -0,0 +1,33 @@ +/* dl-runtime helpers for ARC. + Copyright (C) 2017-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +/* PLT jump into resolver passes PC of PLTn, while _dl_fixup expects the + address of corresponding .rela.plt entry. */ + +#define reloc_index \ +({ \ + unsigned long int plt0 = D_PTR (l, l_info[DT_PLTGOT]); \ + unsigned long int pltn = reloc_arg; \ + /* Exclude PLT0 and PLT1. */ \ + unsigned long int idx = ((pltn - plt0) / 16) - 2; \ + idx; \ +}) + +#define reloc_offset reloc_index * sizeof (PLTREL) + +#include <elf/dl-runtime.c> diff --git a/sysdeps/arc/dl-sysdep.h b/sysdeps/arc/dl-sysdep.h new file mode 100644 index 000000000000..6382c05bf485 --- /dev/null +++ b/sysdeps/arc/dl-sysdep.h @@ -0,0 +1,25 @@ +/* System-specific settings for dynamic linker code. ARC version. + Copyright (C) 2009-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include_next <dl-sysdep.h> + +/* _dl_argv cannot be attribute_relro, because _dl_start_user + might write into it after _dl_start returns. */ +#define DL_ARGV_NOT_RELRO 1 + +#define DL_EXTERN_PROTECTED_DATA diff --git a/sysdeps/arc/dl-trampoline.S b/sysdeps/arc/dl-trampoline.S new file mode 100644 index 000000000000..3dad904caaf9 --- /dev/null +++ b/sysdeps/arc/dl-trampoline.S @@ -0,0 +1,80 @@ +/* PLT trampolines. ARC version. + Copyright (C) 2005-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <libc-symbols.h> + +#include <sysdep.h> +#include <sys/syscall.h> + +/* Save the registers which resolver could possibly clobber + r0-r9: args to the function - symbol being resolved + r10-r12 are already clobbered by PLTn, PLT0 thus neednot be saved. */ + +.macro SAVE_CALLER_SAVED + push_s r0 + push_s r1 + push_s r2 + push_s r3 + st.a r4, [sp, -4] + st.a r5, [sp, -4] + st.a r6, [sp, -4] + st.a r7, [sp, -4] + st.a r8, [sp, -4] + st.a r9, [sp, -4] + cfi_adjust_cfa_offset (40) + push_s blink + cfi_adjust_cfa_offset (4) + cfi_rel_offset (blink, 0) +.endm + +.macro RESTORE_CALLER_SAVED_BUT_R0 + ld.ab blink,[sp, 4] + cfi_adjust_cfa_offset (-4) + cfi_restore (blink) + ld.ab r9, [sp, 4] + ld.ab r8, [sp, 4] + ld.ab r7, [sp, 4] + ld.ab r6, [sp, 4] + ld.ab r5, [sp, 4] + ld.ab r4, [sp, 4] + pop_s r3 + pop_s r2 + pop_s r1 + cfi_adjust_cfa_offset (-36) +.endm + +/* Upon entry, PLTn, which led us here, sets up the following regs + r11 = Module info (tpnt pointer as expected by resolver) + r12 = PC of the PLTn itself - needed by resolver to find + corresponding .rela.plt entry. */ + +ENTRY (_dl_runtime_resolve) + ; args to func being resolved, which resolver might clobber + SAVE_CALLER_SAVED + + mov_s r1, r12 + bl.d _dl_fixup + mov r0, r11 + + RESTORE_CALLER_SAVED_BUT_R0 + j_s.d [r0] /* r0 has resolved function addr. */ + pop_s r0 /* restore first arg to resolved call. */ + cfi_adjust_cfa_offset (-4) + cfi_restore (r0) +END (_dl_runtime_resolve) diff --git a/sysdeps/arc/gccframe.h b/sysdeps/arc/gccframe.h new file mode 100644 index 000000000000..5d547fd40a6c --- /dev/null +++ b/sysdeps/arc/gccframe.h @@ -0,0 +1,21 @@ +/* Definition of object in frame unwind info. ARC version. + Copyright (C) 2017-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#define FIRST_PSEUDO_REGISTER 40 + +#include <sysdeps/generic/gccframe.h> diff --git a/sysdeps/arc/jmpbuf-offsets.h b/sysdeps/arc/jmpbuf-offsets.h new file mode 100644 index 000000000000..a76af7d0f7ce --- /dev/null +++ b/sysdeps/arc/jmpbuf-offsets.h @@ -0,0 +1,47 @@ +/* Private macros for accessing __jmp_buf contents. ARC version. + Copyright (C) 2006-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +/* Save offsets within __jmp_buf + We don't use most of these symbols; they are here for documentation. */ + +/* Callee Regs. */ +#define JB_R13 0 +#define JB_R14 1 +#define JB_R15 2 +#define JB_R16 3 +#define JB_R17 4 +#define JB_R18 5 +#define JB_R19 6 +#define JB_R20 7 +#define JB_R21 8 +#define JB_R22 9 +#define JB_R23 10 +#define JB_R24 11 +#define JB_R25 12 + +/* Frame Pointer, Stack Pointer, Branch-n-link. */ +#define JB_FP 13 +#define JB_SP 14 +#define JB_BLINK 15 + +/* We save space for some extra state to accommodate future changes + This is number of words. */ +#define JB_NUM 32 + +/* Helper for generic ____longjmp_chk. */ +#define JB_FRAME_ADDRESS(buf) ((void *) (unsigned long int) (buf[JB_SP])) diff --git a/sysdeps/arc/jmpbuf-unwind.h b/sysdeps/arc/jmpbuf-unwind.h new file mode 100644 index 000000000000..b333cd51c80e --- /dev/null +++ b/sysdeps/arc/jmpbuf-unwind.h @@ -0,0 +1,47 @@ +/* Examine __jmp_buf for unwinding frames. ARC version. + Copyright (C) 2005-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include <setjmp.h> +#include <jmpbuf-offsets.h> +#include <stdint.h> +#include <unwind.h> + +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ + +#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \ + ((void *) (address) < (void *) demangle (jmpbuf[JB_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 jmpbuf) +{ + uintptr_t sp = jmpbuf[JB_SP]; +#ifdef PTR_DEMANGLE + PTR_DEMANGLE (sp); +#endif + return sp; +} + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_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/arc/machine-gmon.h b/sysdeps/arc/machine-gmon.h new file mode 100644 index 000000000000..5fcde54722f2 --- /dev/null +++ b/sysdeps/arc/machine-gmon.h @@ -0,0 +1,35 @@ +/* Machine-dependent definitions for profiling support. ARC version. + Copyright (C) 1996-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#define _MCOUNT_DECL(frompc, selfpc) \ +static void \ +__mcount_internal (unsigned long int frompc, unsigned long int selfpc) + +/* This is very simple as gcc does all the heavy lifting at _mcount call site + - sets up caller's blink in r0, so frompc is setup correctly + - preserve argument registers for original call. */ + +#define MCOUNT \ +void \ +_mcount (void *frompc) \ +{ \ + __mcount_internal ((unsigned long int) frompc, \ + (unsigned long int) __builtin_return_address (0)); \ +} diff --git a/sysdeps/arc/memusage.h b/sysdeps/arc/memusage.h new file mode 100644 index 000000000000..c72beb1ce9a4 --- /dev/null +++ b/sysdeps/arc/memusage.h @@ -0,0 +1,23 @@ +/* Machine-specific definitions for memory usage profiling, ARC version. + Copyright (C) 2000-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +#define GETSP() ({ register uintptr_t stack_ptr asm ("sp"); stack_ptr; }) + +#define uatomic32_t unsigned int + +#include <sysdeps/generic/memusage.h> diff --git a/sysdeps/arc/setjmp.S b/sysdeps/arc/setjmp.S new file mode 100644 index 000000000000..e745f81643e3 --- /dev/null +++ b/sysdeps/arc/setjmp.S @@ -0,0 +1,66 @@ +/* setjmp for ARC. + Copyright (C) 1991-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + + +#include <sysdep.h> + +/* Upon entry r0 = jump buffer into which regs will be saved. */ +ENTRY (setjmp) + b.d __sigsetjmp + mov r1, 1 ; save signals +END (setjmp) + +/* Upon entry r0 = jump buffer into which regs will be saved. */ +ENTRY (_setjmp) + b.d __sigsetjmp + mov r1, 0 /* don't save signals. */ +END (_setjmp) +libc_hidden_def (_setjmp) + +/* Upon entry + r0 = jump buffer into which regs will be saved + r1 = do we need to save signals. */ +ENTRY (__sigsetjmp) + + st_s r13, [r0] + st_s r14, [r0,4] + st r15, [r0,8] + st r16, [r0,12] + st r17, [r0,16] + st r18, [r0,20] + st r19, [r0,24] + st r20, [r0,28] + st r21, [r0,32] + st r22, [r0,36] + st r23, [r0,40] + st r24, [r0,44] + st r25, [r0,48] + st fp, [r0,52] + st sp, [r0,56] + + /* Make a note of where longjmp will return to. + that will be right next to this setjmp call-site which will be + contained in blink, since "C" caller of this routine will do + a branch-n-link */ + + st blink, [r0,60] + b __sigjmp_save + +END (__sigsetjmp) + +libc_hidden_def (__sigsetjmp) diff --git a/sysdeps/arc/sysdep.h b/sysdeps/arc/sysdep.h new file mode 100644 index 000000000000..e94955ed9d5f --- /dev/null +++ b/sysdeps/arc/sysdep.h @@ -0,0 +1,48 @@ +/* Assembler macros for ARC. + Copyright (C) 2017-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <sysdeps/generic/sysdep.h> + +#ifdef __ASSEMBLER__ + +/* Syntactic details of assembler. + ; is not newline but comment, # is also for comment. */ +# define ASM_SIZE_DIRECTIVE(name) .size name,.-name + +# define ENTRY(name) \ + .align 4 ASM_LINE_SEP \ + .globl C_SYMBOL_NAME(name) ASM_LINE_SEP \ + .type C_SYMBOL_NAME(name),%function ASM_LINE_SEP \ + C_LABEL(name) ASM_LINE_SEP \ + cfi_startproc ASM_LINE_SEP \ + CALL_MCOUNT + +# undef END +# define END(name) \ + cfi_endproc ASM_LINE_SEP \ + ASM_SIZE_DIRECTIVE(name) + +# ifdef SHARED +# define PLTJMP(_x) _x##@plt +# else +# define PLTJMP(_x) _x +# endif + +# define CALL_MCOUNT /* Do nothing for now. */ + +#endif /* __ASSEMBLER__ */ diff --git a/sysdeps/arc/tls-macros.h b/sysdeps/arc/tls-macros.h new file mode 100644 index 000000000000..b96425569143 --- /dev/null +++ b/sysdeps/arc/tls-macros.h @@ -0,0 +1,47 @@ +/* Macros to support TLS testing in times of missing compiler support. ARC version. + Copyright (C) 2017-2020 Free Software Foundation, Inc. + + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + + +/* For now. */ +#define TLS_LD(x) TLS_IE(x) + +#define TLS_GD(x) \ + ({ int *__result; \ + __asm__ ("add r0, pcl, @" #x "@tlsgd \n" \ + ".tls_gd_ld " #x "`bl __tls_get_addr@plt \n" \ + "mov %0, r0 \n" \ + : "=&r" (__result) \ + ::"r0","r1","r2","r3","r4","r5","r6","r7", \ + "r8","r9","r10","r11","r12"); \ + __result; }) + +#define TLS_LE(x) \ + ({ int *__result; \ + void *tp = __builtin_thread_pointer (); \ + __asm__ ("add %0, %1, @" #x "@tpoff \n" \ + : "=r" (__result) : "r"(tp)); \ + __result; }) + +#define TLS_IE(x) \ + ({ int *__result; \ + void *tp = __builtin_thread_pointer (); \ + __asm__ ("ld %0, [pcl, @" #x "@tlsie] \n" \ + "add %0, %1, %0 \n" \ + : "=&r" (__result) : "r" (tp)); \ + __result; }) -- 2.20.1 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc
