This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
[PATCH v2 02/15] ARC: ABI Implementation
- From: Vineet Gupta <vineet dot gupta1 at synopsys dot com>
- To: <libc-alpha at sourceware dot org>
- Cc: <linux-snps-arc at lists dot infradead dot org>, Vineet Gupta <vineet dot gupta1 at synopsys dot com>
- Date: Tue, 29 Jan 2019 17:25:42 -0800
- Subject: [PATCH v2 02/15] ARC: ABI Implementation
- References: <1548811555-24373-1-git-send-email-vgupta@synopsys.com>
This code deals with the ARC ABI.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
ChangeLog | 18 ++++++++++
sysdeps/arc/__longjmp.S | 50 +++++++++++++++++++++++++++
sysdeps/arc/abort-instr.h | 2 ++
sysdeps/arc/bits/endian.h | 12 +++++++
sysdeps/arc/bits/setjmp.h | 26 ++++++++++++++
sysdeps/arc/bsd-_setjmp.S | 1 +
sysdeps/arc/bsd-setjmp.S | 1 +
sysdeps/arc/dl-runtime.c | 39 +++++++++++++++++++++
sysdeps/arc/dl-sysdep.h | 25 ++++++++++++++
sysdeps/arc/dl-trampoline.S | 80 ++++++++++++++++++++++++++++++++++++++++++++
sysdeps/arc/gccframe.h | 21 ++++++++++++
sysdeps/arc/gmp-mparam.h | 23 +++++++++++++
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 ++++++++++++++++++++++++++
19 files changed, 611 insertions(+)
create mode 100644 sysdeps/arc/__longjmp.S
create mode 100644 sysdeps/arc/abort-instr.h
create mode 100644 sysdeps/arc/bits/endian.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/gmp-mparam.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/ChangeLog b/ChangeLog
index e2091865afb5..ec8f6a0a9238 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,24 @@
2019-01-21 Vineet Gupta <vgupta@synopsys.com>
* elf/elf.h: add defines for ARC.
+ * sysdeps/arc/__longjmp.S: New file.
+ * sysdeps/arc/abort-instr.h: New file.
+ * sysdeps/arc/bits/endian.h: New file.
+ * sysdeps/arc/bits/setjmp.h: New file.
+ * sysdeps/arc/bsd-_setjmp.S: New file.
+ * sysdeps/arc/bsd-setjmp.S: New file.
+ * sysdeps/arc/dl-runtime.c: New file.
+ * sysdeps/arc/dl-sysdep.h: New file.
+ * sysdeps/arc/dl-trampoline.S: New file.
+ * sysdeps/arc/gccframe.h: New file.
+ * sysdeps/arc/gmp-mparam.h: New file.
+ * sysdeps/arc/jmpbuf-offsets.h: New file.
+ * sysdeps/arc/jmpbuf-unwind.h: New file.
+ * sysdeps/arc/machine-gmon.h: New file.
+ * sysdeps/arc/memusage.h: New file.
+ * sysdeps/arc/setjmp.S: New file.
+ * sysdeps/arc/sysdep.h: New file.
+ * sysdeps/arc/tls-macros.h: New file.
2019-01-25 Siddhesh Poyarekar <siddhesh@sourceware.org>
diff --git a/sysdeps/arc/__longjmp.S b/sysdeps/arc/__longjmp.S
new file mode 100644
index 000000000000..8296aa445f63
--- /dev/null
+++ b/sysdeps/arc/__longjmp.S
@@ -0,0 +1,50 @@
+/* longjmp for ARC.
+ Copyright (C) 2017-2019 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
+ <http://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/endian.h b/sysdeps/arc/bits/endian.h
new file mode 100644
index 000000000000..46f41e3cffe6
--- /dev/null
+++ b/sysdeps/arc/bits/endian.h
@@ -0,0 +1,12 @@
+/* Although ARC CPU can do BE, it is not supported. */
+
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#ifdef __LITTLE_ENDIAN__
+# define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
+#ifdef __BIG_ENDIAN__
+# error "Big Endian NOt supported on ARC"
+#endif
diff --git a/sysdeps/arc/bits/setjmp.h b/sysdeps/arc/bits/setjmp.h
new file mode 100644
index 000000000000..3cb457d097c4
--- /dev/null
+++ b/sysdeps/arc/bits/setjmp.h
@@ -0,0 +1,26 @@
+/* Define the machine-dependent type `jmp_buf'. ARC version.
+ Copyright (C) 1992-2019 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
+ <http://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..48f4a5a7e1d5
--- /dev/null
+++ b/sysdeps/arc/dl-runtime.c
@@ -0,0 +1,39 @@
+/* dl-runtime helpers for ARC.
+ Copyright (C) 2017-2019 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
+ <http://www.gnu.org/licenses/>. */
+
+/* PLT jump into resolver passes PC of PLTn, while _dl_fixup expects the
+ address of corresponding .rela.plt entry. */
+
+#ifdef __A7__
+# define ARC_PLT_SIZE 12
+#else
+# define ARC_PLT_SIZE 16
+#endif
+
+#define reloc_index \
+({ \
+ unsigned long int plt0 = D_PTR (l, l_info[DT_PLTGOT]); \
+ unsigned long int pltn = reloc_arg; \
+ /* Exclude PL0 and PLT1. */ \
+ unsigned long int idx = (pltn - plt0)/ARC_PLT_SIZE - 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..ffc30b69372b
--- /dev/null
+++ b/sysdeps/arc/dl-sysdep.h
@@ -0,0 +1,25 @@
+/* System-specific settings for dynamic linker code. ARC version.
+ Copyright (C) 2009-2019 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
+ <http://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..9da75fb1fe24
--- /dev/null
+++ b/sysdeps/arc/dl-trampoline.S
@@ -0,0 +1,80 @@
+/* PLT trampolines. ARC version.
+ Copyright (C) 2005-2019 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
+ <http://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..40487fa77b4a
--- /dev/null
+++ b/sysdeps/arc/gccframe.h
@@ -0,0 +1,21 @@
+/* Definition of object in frame unwind info. ARC version.
+ Copyright (C) 2017-2019 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
+ <http://www.gnu.org/licenses/>. */
+
+#define FIRST_PSEUDO_REGISTER 40
+
+#include <sysdeps/generic/gccframe.h>
diff --git a/sysdeps/arc/gmp-mparam.h b/sysdeps/arc/gmp-mparam.h
new file mode 100644
index 000000000000..e30695fc6b2d
--- /dev/null
+++ b/sysdeps/arc/gmp-mparam.h
@@ -0,0 +1,23 @@
+/* gmp-mparam.h -- Compiler/machine parameter header file.
+
+Copyright (C) 2017-2019 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#include <sysdeps/generic/gmp-mparam.h>
+
+#define IEEE_DOUBLE_BIG_ENDIAN 0
diff --git a/sysdeps/arc/jmpbuf-offsets.h b/sysdeps/arc/jmpbuf-offsets.h
new file mode 100644
index 000000000000..9760f3a3891e
--- /dev/null
+++ b/sysdeps/arc/jmpbuf-offsets.h
@@ -0,0 +1,47 @@
+/* Private macros for accessing __jmp_buf contents. ARC version.
+ Copyright (C) 2006-2019 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
+ <http://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..47be5758c75c
--- /dev/null
+++ b/sysdeps/arc/jmpbuf-unwind.h
@@ -0,0 +1,47 @@
+/* Examine __jmp_buf for unwinding frames. ARC version.
+ Copyright (C) 2005-2019 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
+ <http://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..1d9e8108d9b9
--- /dev/null
+++ b/sysdeps/arc/machine-gmon.h
@@ -0,0 +1,35 @@
+/* Machine-dependent definitions for profiling support. ARC version.
+ Copyright (C) 1996-2019 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
+ <http://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..29f234f5bac0
--- /dev/null
+++ b/sysdeps/arc/memusage.h
@@ -0,0 +1,23 @@
+/* Machine-specific definitions for memory usage profiling, ARC version.
+ Copyright (C) 2000-2019 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
+ <http://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..518545a99e8b
--- /dev/null
+++ b/sysdeps/arc/setjmp.S
@@ -0,0 +1,66 @@
+/* setjmp for ARC.
+ Copyright (C) 1991-2019 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
+ <http://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..127e9b01e735
--- /dev/null
+++ b/sysdeps/arc/sysdep.h
@@ -0,0 +1,48 @@
+/* Assembler macros for ARC.
+ Copyright (C) 2017-2019 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
+ <http://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..4d54683eda4f
--- /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) 2017-2019 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
+ <http://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; })
--
2.7.4