From patchwork Thu Dec 20 03:02:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?5q+b5pmX?= X-Patchwork-Id: 30775 Received: (qmail 127351 invoked by alias); 20 Dec 2018 03:11:35 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 127341 invoked by uid 89); 20 Dec 2018 03:11:34 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-16.9 required=5.0 tests=BAYES_00, FSL_HELO_NON_FQDN_1, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, TIME_LIMIT_EXCEEDED autolearn=unavailable version=3.3.2 spammy=Hardware, jumped X-HELO: vmh-VirtualBox From: Mao Han To: libc-alpha@sourceware.org Cc: c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com, Mao Han Subject: [PATCH v8 01/12] C-SKY: ABI related code Date: Thu, 20 Dec 2018 11:02:37 +0800 Message-Id: In-Reply-To: References: In-Reply-To: References: Codes in this patch contains lots of C-SKY ABI related code. They are written accroding to the registers assgnments, relocations, assemblly described in C-SKY CPU ABI Standards and C-SKY architercure user guide. Available from: https://github.com/c-sky/csky-doc This does not contain any linux related code. * sysdeps/csky/abiv2/__longjmp.S: New file. * sysdeps/csky/abiv2/csky-mcount.S: Likewise. * sysdeps/csky/abiv2/dl-trampoline.S: Likewise. * sysdeps/csky/abiv2/memcmp.S: Likewise. * sysdeps/csky/abiv2/memcpy.S: Likewise. * sysdeps/csky/abiv2/memmove.S: Likewise. * sysdeps/csky/abiv2/memset.S: Likewise. * sysdeps/csky/abiv2/setjmp.S: Likewise. * sysdeps/csky/abiv2/start.S: Likewise. * sysdeps/csky/abiv2/strcmp.S: Likewise. * sysdeps/csky/abiv2/strcpy.S: Likewise. * sysdeps/csky/abiv2/strlen.S: Likewise. * sysdeps/csky/abort-instr.h: Likewise. * sysdeps/csky/bits/endian.h: Likewise. * sysdeps/csky/bits/link.h: Likewise. * sysdeps/csky/bits/setjmp.h: Likewise. * sysdeps/csky/bsd-_setjmp.S: Likewise. * sysdeps/csky/bsd-setjmp.S: Likewise. * sysdeps/csky/gccframe.h: Likewise. * sysdeps/csky/jmpbuf-unwind.h: Likewise. * sysdeps/csky/machine-gmon.h: Likewise. * sysdeps/csky/memusage.h: Likewise. * sysdeps/csky/stackinfo.h: Likewise. * sysdeps/csky/sysdep.h: Likewise. --- sysdeps/csky/abiv2/__longjmp.S | 61 ++++++++++ sysdeps/csky/abiv2/csky-mcount.S | 67 +++++++++++ sysdeps/csky/abiv2/dl-trampoline.S | 50 ++++++++ sysdeps/csky/abiv2/memcmp.S | 142 ++++++++++++++++++++++ sysdeps/csky/abiv2/memcpy.S | 238 +++++++++++++++++++++++++++++++++++++ sysdeps/csky/abiv2/memmove.S | 1 + sysdeps/csky/abiv2/memset.S | 98 +++++++++++++++ sysdeps/csky/abiv2/setjmp.S | 77 ++++++++++++ sysdeps/csky/abiv2/start.S | 108 +++++++++++++++++ sysdeps/csky/abiv2/strcmp.S | 156 ++++++++++++++++++++++++ sysdeps/csky/abiv2/strcpy.S | 127 ++++++++++++++++++++ sysdeps/csky/abiv2/strlen.S | 102 ++++++++++++++++ sysdeps/csky/abort-instr.h | 2 + sysdeps/csky/bits/endian.h | 9 ++ sysdeps/csky/bits/link.h | 55 +++++++++ sysdeps/csky/bits/setjmp.h | 34 ++++++ sysdeps/csky/bsd-_setjmp.S | 1 + sysdeps/csky/bsd-setjmp.S | 1 + sysdeps/csky/gccframe.h | 21 ++++ sysdeps/csky/jmpbuf-unwind.h | 48 ++++++++ sysdeps/csky/machine-gmon.h | 32 +++++ sysdeps/csky/memusage.h | 21 ++++ sysdeps/csky/stackinfo.h | 29 +++++ sysdeps/csky/sysdep.h | 84 +++++++++++++ 24 files changed, 1564 insertions(+) create mode 100644 sysdeps/csky/abiv2/__longjmp.S create mode 100644 sysdeps/csky/abiv2/csky-mcount.S create mode 100644 sysdeps/csky/abiv2/dl-trampoline.S create mode 100644 sysdeps/csky/abiv2/memcmp.S create mode 100644 sysdeps/csky/abiv2/memcpy.S create mode 100644 sysdeps/csky/abiv2/memmove.S create mode 100644 sysdeps/csky/abiv2/memset.S create mode 100644 sysdeps/csky/abiv2/setjmp.S create mode 100644 sysdeps/csky/abiv2/start.S create mode 100644 sysdeps/csky/abiv2/strcmp.S create mode 100644 sysdeps/csky/abiv2/strcpy.S create mode 100644 sysdeps/csky/abiv2/strlen.S create mode 100644 sysdeps/csky/abort-instr.h create mode 100644 sysdeps/csky/bits/endian.h create mode 100644 sysdeps/csky/bits/link.h create mode 100644 sysdeps/csky/bits/setjmp.h create mode 100644 sysdeps/csky/bsd-_setjmp.S create mode 100644 sysdeps/csky/bsd-setjmp.S create mode 100644 sysdeps/csky/gccframe.h create mode 100644 sysdeps/csky/jmpbuf-unwind.h create mode 100644 sysdeps/csky/machine-gmon.h create mode 100644 sysdeps/csky/memusage.h create mode 100644 sysdeps/csky/stackinfo.h create mode 100644 sysdeps/csky/sysdep.h diff --git a/sysdeps/csky/abiv2/__longjmp.S b/sysdeps/csky/abiv2/__longjmp.S new file mode 100644 index 0000000..cef4d83 --- /dev/null +++ b/sysdeps/csky/abiv2/__longjmp.S @@ -0,0 +1,61 @@ +/* longjmp for C-SKY ABIV2. + Copyright (C) 2018 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 + +ENTRY (__longjmp) + mov a2, a0 + mov a0, a1 /* Get the return value in place. */ + cmpnei a0, 0 + bt have_return + movi a0, 1 /* Can't let setjmp() return zero! */ +have_return: +#ifdef CHECK_SP + ldw r10, (a2, 0) /* Jmpbuf's sp. */ +# ifdef PTR_MANGLE + PTR_DEMANGLE (r10, r10, a3) +# endif + CHECK_SP (r10) +#endif + ldw sp, (a2, 0) + ldw lr, (a2, 4) + ldw r4, (a2, 8) + ldw r5, (a2, 12) + ldw r6, (a2, 16) + ldw r7, (a2, 20) + ldw r8, (a2, 24) + ldw r9, (a2, 28) + ldw r10, (a2, 32) + ldw r11, (a2, 36) + ldw r16, (a2, 40) + ldw r17, (a2, 44) + ldw r26, (a2, 48) + ldw r27, (a2, 52) + ldw r28, (a2, 56) + ldw r29, (a2, 60) + ldw r30, (a2, 64) + ldw r31, (a2, 68) + addi a2, 72 + +#ifdef PTR_MANGLE + PTR_DEMANGLE (sp, sp, a3) + PTR_DEMANGLE2 (lr, lr, a3) +#endif + jmp lr + +END (__longjmp) diff --git a/sysdeps/csky/abiv2/csky-mcount.S b/sysdeps/csky/abiv2/csky-mcount.S new file mode 100644 index 0000000..e59d20f --- /dev/null +++ b/sysdeps/csky/abiv2/csky-mcount.S @@ -0,0 +1,67 @@ +/* Implementation of profiling support. C-SKY ABIV2 version. + Copyright (C) 2018 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 + +/* Use an assembly stub with a special ABI. The calling lr has been + pushed to the stack (which will be misaligned). We should preserve + all registers except ip and pop a word off the stack. + + NOTE: This assumes mcount_internal does not clobber any non-core + (coprocessor) registers. Currently this is true, but may require + additional attention in the future. + + The calling sequence looks something like: +func: + push lr + jbsr _mount + +*/ + +/* Don't call mcount when calling mcount... */ +#undef PROF + +ENTRY (_mcount) + subi sp, 20 + stw a0, (sp, 0) + stw a1, (sp, 4) + stw a2, (sp, 8) + stw a3, (sp, 12) + stw lr, (sp, 16) + mov a1, lr + ldw a0, (sp, 20) +#ifdef __PIC__ + grs t1, .Lgetpc +.Lgetpc: + lrw t0, .Lgetpc@GOTPC + addu t1, t0 + lrw t0, __mcount_internal@PLT + ldr.w t0, (t1, t0 << 0) + jsr t0 +#else + jsri __mcount_internal +#endif /* !__PIC__ */ + ldw a0, (sp, 0) + ldw a1, (sp, 4) + ldw a2, (sp, 8) + ldw a3, (sp, 12) + ldw t1, (sp, 16) + ldw lr, (sp, 20) + addi sp, 24 + jmp t1 +END (_mcount) diff --git a/sysdeps/csky/abiv2/dl-trampoline.S b/sysdeps/csky/abiv2/dl-trampoline.S new file mode 100644 index 0000000..b6d6268 --- /dev/null +++ b/sysdeps/csky/abiv2/dl-trampoline.S @@ -0,0 +1,50 @@ +/* PLT trampolines. C-SKY ABIV2 version. + Copyright (C) 2018 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 + . */ + +/* This function is not called directly. It is jumped when attempting to + use a symbol that has not yet been resolved. + + .plt*: + subi r0, 32 + stw r2, (r0, 0) + stw r3, (r0, 4) + lrw r3, #offset + ldw r2, (gb, 8) + jmp r2 + */ + +#include + + .globl _dl_runtime_resolve; + .type _dl_runtime_resolve,@function; + .align 4; +_dl_runtime_resolve: + subi sp, 20 + stm a0-a3, (sp) + stw lr, (sp, 16) + /* a0 = id, a1 = offset(do it in plt*). */ + ldw a0, (gb, 4) + movi a1, 12 + mult a1, t1 + bsr _dl_fixup + mov t0, a0 + ldw lr, (sp, 16) + ldm a0-a3, (sp) + addi sp, 20 + jmp t0 + .size _dl_runtime_resolve,.-_dl_runtime_resolve diff --git a/sysdeps/csky/abiv2/memcmp.S b/sysdeps/csky/abiv2/memcmp.S new file mode 100644 index 0000000..d23f7e7 --- /dev/null +++ b/sysdeps/csky/abiv2/memcmp.S @@ -0,0 +1,142 @@ +/* The assembly function for memory compare. C-SKY ABIV2 version. + Copyright (C) 2018 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 + +ENTRY (memcmp) + /* Test if len less than 4 bytes. */ + mov r3, r0 + movi r0, 0 + mov r12, r4 + cmplti r2, 4 + jbt .L_compare_by_byte + + andi r13, r0, 3 + movi r19, 4 + /* Test if s1 is not 4 bytes aligned. */ + bnez r13, .L_s1_not_aligned + + LABLE_ALIGN +.L_s1_aligned: + /* If dest is aligned, then copy. */ + zext r18, r2, 31, 4 + /* Test if len less than 16 bytes. */ + bez r18, .L_compare_by_word + +.L_compare_by_4word: + /* If aligned, load word each time. */ + ldw r20, (r3, 0) + ldw r21, (r1, 0) + /* If s1[i] != s2[i], goto .L_byte_check. */ + cmpne r20, r21 + bt .L_byte_check + + ldw r20, (r3, 4) + ldw r21, (r1, 4) + cmpne r20, r21 + bt .L_byte_check + + ldw r20, (r3, 8) + ldw r21, (r1, 8) + cmpne r20, r21 + bt .L_byte_check + + ldw r20, (r3, 12) + ldw r21, (r1, 12) + cmpne r20, r21 + bt .L_byte_check + + PRE_BNEZAD (r18) + addi a3, 16 + addi a1, 16 + + BNEZAD (r18, .L_compare_by_4word) + +.L_compare_by_word: + zext r18, r2, 3, 2 + bez r18, .L_compare_by_byte +.L_compare_by_word_loop: + ldw r20, (r3, 0) + ldw r21, (r1, 0) + addi r3, 4 + PRE_BNEZAD (r18) + cmpne r20, r21 + addi r1, 4 + bt .L_byte_check + BNEZAD (r18, .L_compare_by_word_loop) + +.L_compare_by_byte: + zext r18, r2, 1, 0 + bez r18, .L_return +.L_compare_by_byte_loop: + ldb r0, (r3, 0) + ldb r4, (r1, 0) + addi r3, 1 + subu r0, r4 + PRE_BNEZAD (r18) + addi r1, 1 + bnez r0, .L_return + BNEZAD (r18, .L_compare_by_byte_loop) + +.L_return: + mov r4, r12 + rts + + /* s1[i] != s2[i] in word, so we check byte 3. */ +.L_byte_check: + xtrb3 r0, r20 + xtrb3 r2, r21 + subu r0, r2 + bnez r0, .L_return + + /* check byte 2 */ + xtrb2 r0, r20 + xtrb2 r2, r21 + subu r0, r2 + bnez r0, .L_return + + /* check byte 1 */ + xtrb1 r0, r20 + xtrb1 r2, r21 + subu r0, r2 + bnez r0, .L_return + + /* check byte 0 */ + xtrb0 r0, r20 + xtrb0 r2, r21 + subu r0, r2 + br .L_return + + /* Compare when s1 is not aligned. */ +.L_s1_not_aligned: + sub r13, r19, r13 + sub r2, r13 +.L_s1_not_aligned_loop: + ldb r0, (r3, 0) + ldb r4, (r1, 0) + addi r3, 1 + subu r0, r4 + PRE_BNEZAD (r13) + addi r1, 1 + bnez r0, .L_return + BNEZAD (r13, .L_s1_not_aligned_loop) + br .L_s1_aligned +END (memcmp) +weak_alias (memcmp, bcmp) +libc_hidden_def (memcmp) +.weak memcmp diff --git a/sysdeps/csky/abiv2/memcpy.S b/sysdeps/csky/abiv2/memcpy.S new file mode 100644 index 0000000..812bdd4 --- /dev/null +++ b/sysdeps/csky/abiv2/memcpy.S @@ -0,0 +1,238 @@ +/* The assembly function for memcpy. C-SKY ABIV2 version. + Copyright (C) 2018 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 + +ENTRY (memcpy) + /* Test if len less than 4 bytes. */ + mov r12, r0 + cmplti r2, 4 + bt .L_copy_by_byte + + andi r13, r0, 3 + movi r19, 4 + /* Test if dest is not 4 bytes aligned. */ + bnez r13, .L_dest_not_aligned +.L_dest_aligned: + /* If dest is aligned, then copy. */ + zext r18, r2, 31, 4 + /* Test if len less than 16 bytes. */ + bez r18, .L_len_less_16bytes + movi r19, 0 + + LABLE_ALIGN +.L_len_larger_16bytes: +#if defined (__CSKY_VDSPV2__) + vldx.8 vr0, (r1), r19 + PRE_BNEZAD (r18) + addi r1, 16 + vstx.8 vr0, (r0), r19 + addi r0, 16 +#elif defined (__csky_fpuv2__) && defined(__CK810__) + fldd fr4, (r1, 0) + PRE_BNEZAD (r18) + fstd fr4, (r0, 0) + fldd fr4, (r1, 8) + addi r1, 16 + fstd fr4, (r0, 8) + addi r0, 16 +#elif defined (__CK860__) + ldw r3, (r1, 0) + stw r3, (r0, 0) + ldw r3, (r1, 4) + stw r3, (r0, 4) + ldw r3, (r1, 8) + stw r3, (r0, 8) + ldw r3, (r1, 12) + addi r1, 16 + stw r3, (r0, 12) + addi r0, 16 +#else + ldw r20, (r1, 0) + ldw r21, (r1, 4) + ldw r22, (r1, 8) + ldw r23, (r1, 12) + stw r20, (r0, 0) + stw r21, (r0, 4) + stw r22, (r0, 8) + stw r23, (r0, 12) + PRE_BNEZAD (r18) + addi r1, 16 + addi r0, 16 +#endif + BNEZAD (r18, .L_len_larger_16bytes) + +.L_len_less_16bytes: + zext r18, r2, 3, 2 + bez r18, .L_copy_by_byte +.L_len_less_16bytes_loop: + ldw r3, (r1, 0) + PRE_BNEZAD (r18) + addi r1, 4 + stw r3, (r0, 0) + addi r0, 4 + BNEZAD (r18, .L_len_less_16bytes_loop) + + /* Test if len less than 4 bytes. */ +.L_copy_by_byte: + zext r18, r2, 1, 0 + bez r18, .L_return +.L_copy_by_byte_loop: + ldb r3, (r1, 0) + PRE_BNEZAD (r18) + addi r1, 1 + stb r3, (r0, 0) + addi r0, 1 + BNEZAD (r18, .L_copy_by_byte_loop) + +.L_return: + mov r0, r12 + rts + + /* If dest is not aligned, just copying some bytes makes the dest + align. */ + +.L_dest_not_aligned: + sub r13, r19, r13 + mov r19, r13 +.L_dest_not_aligned_loop: + /* Makes the dest align. */ + ldb r3, (r1, 0) + PRE_BNEZAD (r13) + addi r1, 1 + stb r3, (r0, 0) + addi r0, 1 + BNEZAD (r13, .L_dest_not_aligned_loop) + sub r2, r19 + cmplti r2, 4 + bt .L_copy_by_byte + /* Check whether the src is aligned. */ + br .L_dest_aligned +END (memcpy) + +libc_hidden_builtin_def (memcpy) +.weak memcpy + + +ENTRY (memmove) + subu r3, r0, r1 + cmphs r3, r2 + bt memcpy + + mov r12, r0 + addu r0, r0, r2 + addu r1, r1, r2 + + /* Test if len less than 4 bytes. */ + cmplti r2, 4 + bt .L_copy_by_byte_m + + andi r13, r0, 3 + /* Test if dest is not 4 bytes aligned. */ + bnez r13, .L_dest_not_aligned_m +.L_dest_aligned_m: + /* If dest is aligned, then copy. */ + zext r18, r2, 31, 4 + /* Test if len less than 16 bytes. */ + bez r18, .L_len_less_16bytes_m + movi r19, 0 + + /* len > 16 bytes */ + LABLE_ALIGN +.L_len_larger_16bytes_m: + subi r1, 16 + subi r0, 16 +#if defined (__CSKY_VDSPV2__) + vldx.8 vr0, (r1), r19 + PRE_BNEZAD (r18) + vstx.8 vr0, (r0), r19 +#elif defined (__csky_fpuv2__) && defined(__CK810__) + fldd fr4, (r1, 8) + PRE_BNEZAD (r18) + fstd fr4, (r0, 8) + fldd fr4, (r1, 0) + fstd fr4, (r0, 0) +#elif defined (__CK860__) + ldw r3, (r1, 12) + stw r3, (r0, 12) + ldw r3, (r1, 8) + stw r3, (r0, 8) + ldw r3, (r1, 4) + stw r3, (r0, 4) + ldw r3, (r1, 0) + stw r3, (r0, 0) +#else + ldw r20, (r1, 0) + ldw r21, (r1, 4) + ldw r22, (r1, 8) + ldw r23, (r1, 12) + stw r20, (r0, 0) + stw r21, (r0, 4) + stw r22, (r0, 8) + stw r23, (r0, 12) + PRE_BNEZAD (r18) +#endif + BNEZAD (r18, .L_len_larger_16bytes_m) + +.L_len_less_16bytes_m: + zext r18, r2, 3, 2 + bez r18, .L_copy_by_byte_m +.L_len_less_16bytes_loop_m: + subi r1, 4 + subi r0, 4 + ldw r3, (r1, 0) + PRE_BNEZAD (r18) + stw r3, (r0, 0) + BNEZAD (r18, .L_len_less_16bytes_loop_m) + + /* Test if len less than 4 bytes. */ +.L_copy_by_byte_m: + zext r18, r2, 1, 0 + bez r18, .L_return_m +.L_copy_by_byte_loop_m: + subi r1, 1 + subi r0, 1 + ldb r3, (r1, 0) + PRE_BNEZAD (r18) + stb r3, (r0, 0) + BNEZAD (r18, .L_copy_by_byte_loop_m) + +.L_return_m: + mov r0, r12 + rts + + /* If dest is not aligned, just copying some bytes makes the dest + align. */ +.L_dest_not_aligned_m: + sub r2, r13 +.L_dest_not_aligned_loop_m: + subi r1, 1 + subi r0, 1 + /* Makes the dest align. */ + ldb r3, (r1, 0) + PRE_BNEZAD (r13) + stb r3, (r0, 0) + BNEZAD (r13, .L_dest_not_aligned_loop_m) + cmplti r2, 4 + bt .L_copy_by_byte_m + /* Check whether the src is aligned. */ + br .L_dest_aligned_m +END (memmove) + +libc_hidden_builtin_def (memmove) +.weak memmove diff --git a/sysdeps/csky/abiv2/memmove.S b/sysdeps/csky/abiv2/memmove.S new file mode 100644 index 0000000..5a35458 --- /dev/null +++ b/sysdeps/csky/abiv2/memmove.S @@ -0,0 +1 @@ +/* memmove is in memcpy.S. */ diff --git a/sysdeps/csky/abiv2/memset.S b/sysdeps/csky/abiv2/memset.S new file mode 100644 index 0000000..dd54a4e --- /dev/null +++ b/sysdeps/csky/abiv2/memset.S @@ -0,0 +1,98 @@ +/* The assembly function for memset. C-SKY ABIV2 version. + Copyright (C) 2018 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 + +ENTRY (memset) + /* Test if len less than 4 bytes. */ + mov r12, r0 + cmplti r2, 8 + bt .L_set_by_byte + + andi r13, r0, 3 + movi r19, 4 + /* Test if dest is not 4 bytes aligned. */ + bnez r13, .L_dest_not_aligned + /* Hardware can handle unaligned access directly. */ +.L_dest_aligned: + zextb r1, r1 + mov r3, r1 + lsli r1, 8 + or r1, r3 + lsli r3, r1, 16 + or r3, r1 + + /* If dest is aligned, then copy. */ + zext r18, r2, 31, 4 + /* Test if len less than 16 bytes. */ + bez r18, .L_len_less_16bytes + + LABLE_ALIGN +.L_len_larger_16bytes: + stw r3, (r0, 0) + stw r3, (r0, 4) + stw r3, (r0, 8) + stw r3, (r0, 12) + PRE_BNEZAD (r18) + addi r0, 16 + BNEZAD (r18, .L_len_larger_16bytes) + +.L_len_less_16bytes: + zext r18, r2, 3, 2 + andi r2, 3 + bez r18, .L_set_by_byte +.L_len_less_16bytes_loop: + stw r3, (r0, 0) + PRE_BNEZAD (r18) + addi r0, 4 + BNEZAD (r18, .L_len_less_16bytes_loop) + + /* Test if len less than 4 bytes. */ +.L_set_by_byte: + zext r18, r2, 2, 0 + bez r18, .L_return +.L_set_by_byte_loop: + stb r1, (r0, 0) + PRE_BNEZAD (r18) + addi r0, 1 + BNEZAD (r18, .L_set_by_byte_loop) + +.L_return: + mov r0, r12 + rts + + /* If dest is not aligned, just set some bytes makes the dest + align. */ + +.L_dest_not_aligned: + sub r13, r19, r13 + sub r2, r13 +.L_dest_not_aligned_loop: + /* Makes the dest align. */ + stb r1, (r0, 0) + PRE_BNEZAD (r13) + addi r0, 1 + BNEZAD (r13, .L_dest_not_aligned_loop) + cmplti r2, 8 + bt .L_set_by_byte + /* Check whether the src is aligned. */ + br .L_dest_aligned +END (memset) + +libc_hidden_builtin_def (memset) +.weak memset diff --git a/sysdeps/csky/abiv2/setjmp.S b/sysdeps/csky/abiv2/setjmp.S new file mode 100644 index 0000000..a6cc7e5 --- /dev/null +++ b/sysdeps/csky/abiv2/setjmp.S @@ -0,0 +1,77 @@ +/* setjmp for C-SKY ABIV2. + Copyright (C) 2018 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 + +ENTRY (setjmp) + movi a1, 1 + br __sigsetjmp +END (setjmp) + +ENTRY (_setjmp) + movi a1, 0 + br __sigsetjmp +END (_setjmp) + +libc_hidden_def (_setjmp) + +ENTRY (__sigsetjmp) + mov a2, a0 + /* Save registers. */ + +#ifdef PTR_MANGLE + PTR_MANGLE (t0, sp, a3) + stw t0, (a2, 0) + PTR_MANGLE2 (t0, lr, a3) + stw t0, (a2, 4) +#else + stw sp, (a2, 0) + stw lr, (a2, 4) +#endif + stw r4, (a2, 8) + stw r5, (a2, 12) + stw r6, (a2, 16) + stw r7, (a2, 20) + stw r8, (a2, 24) + stw r9, (a2, 28) + stw r10, (a2, 32) + stw r11, (a2, 36) + stw r16, (a2, 40) + stw r17, (a2, 44) + stw r26, (a2, 48) + stw r27, (a2, 52) + stw r28, (a2, 56) + stw r29, (a2, 60) + stw r30, (a2, 64) + stw r31, (a2, 68) + addi a2, 72 + +#ifdef __PIC__ + grs t1, .Lgetpc +.Lgetpc: + lrw t0, .Lgetpc@GOTPC + addu t1, t0 + lrw a2, __sigjmp_save@PLT + ldr.w a2, (t1, a2 << 0) + jmp a2 +#else + jmpi __sigjmp_save +#endif /* !__PIC__ */ +END (__sigsetjmp) + +hidden_def (__sigsetjmp) diff --git a/sysdeps/csky/abiv2/start.S b/sysdeps/csky/abiv2/start.S new file mode 100644 index 0000000..bad3cac --- /dev/null +++ b/sysdeps/csky/abiv2/start.S @@ -0,0 +1,108 @@ +/* Startup code compliant to the ELF C-SKY ABIV2. + Copyright (C) 2018 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. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file with other + programs, and to distribute those programs without any restriction + coming from the use of this file. (The GNU Lesser General Public + License restrictions do apply in other respects; for example, they + cover modification of the file, and distribution when not linked + into another program.) + + Note that people who make modified versions of this file are not + obligated to grant this special exception for their modified + versions; it is their choice whether to do so. The GNU Lesser + General Public License gives permission to release a modified + version without this exception; this exception also makes it + possible to release a modified version which carries forward this + exception. + + 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 + . */ + +/* We need to call: + __libc_start_main (int (*main) (int, char **, char **), int argc, + char **argv, void (*init) (void), void (*fini) (void), + void (*rtld_fini) (void), void *stack_end) + */ + +#include + + .text + .globl _start; + .type _start,@function; + .align 4; +_start: + subi sp, 8 + /* Clear the link register since this is the outermost frame. */ + movi lr, 0 + /* Pop argc off the stack and save a pointer to argv. */ + ldw a1, (sp, 8) /* Init argc for __libc_start_main. */ + addi a2, sp, 12 /* Init argv for __libc_start_main. */ + + /* Push stack limit. */ + stw a2, (sp, 8) + /* Push rtld_fini. */ + stw a0, (sp, 4) + +#ifdef SHARED + grs t0, .Lgetpc +.Lgetpc: + lrw gb, .Lgetpc@GOTPC + addu gb, t0 + lrw a3, __libc_csu_fini@GOT + ldr.w a3, (gb, a3 << 0) + stw a3, (sp, 0) + + lrw a3, __libc_csu_init@GOT + addu a3, gb + ldw a3, (a3, 0) + + lrw t0, main@GOT + addu t0, gb + ldw a0, (t0, 0) + lrw t1, __libc_start_main@PLT + ldr.w t1, (gb, t1 << 0) + jsr t1 + + lrw t1, abort@PLT + ldr.w t1, (gb, t1 << 0) + jsr t1 +#else + /* Fetch address of __libc_csu_fini. */ + lrw a0, __libc_csu_fini + /* Push __libc_csu_fini */ + stw a0, (sp, 0) + + /* Set up the other arguments in registers. */ + lrw a0, main + lrw a3, __libc_csu_init + /* Let the libc call main and exit with its return code. */ + jsri __libc_start_main + + /* Should never get here. */ + jsri abort +#endif /* !SHARED */ + .size _start,.-_start + + + /* Define a symbol for the first piece of initialized data. */ + .data + .globl __data_start +__data_start: + .long 0 + .weak data_start + data_start = __data_start diff --git a/sysdeps/csky/abiv2/strcmp.S b/sysdeps/csky/abiv2/strcmp.S new file mode 100644 index 0000000..b0fee81 --- /dev/null +++ b/sysdeps/csky/abiv2/strcmp.S @@ -0,0 +1,156 @@ +/* The assembly function for string compare. C-SKY ABIV2 version. + Copyright (C) 2018 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 + +ENTRY (strcmp) + mov a3, a0 + /* Check if the s1 addr is aligned. */ + xor a2, a3, a1 + andi a2, 0x3 + bnez a2, 7f + andi t1, a0, 0x3 + bnez t1, 5f + +1: + /* If aligned, load word each time. */ + ldw t0, (a3, 0) + ldw t1, (a1, 0) + /* If s1[i] != s2[i], goto 2f. */ + cmpne t0, t1 + bt 2f + /* If s1[i] == s2[i], check if s1 or s2 is at the end. */ + tstnbz t0 + /* If at the end, goto 3f (finish comparing). */ + bf 3f + + ldw t0, (a3, 4) + ldw t1, (a1, 4) + cmpne t0, t1 + bt 2f + tstnbz t0 + bf 3f + + ldw t0, (a3, 8) + ldw t1, (a1, 8) + cmpne t0, t1 + bt 2f + tstnbz t0 + bf 3f + + ldw t0, (a3, 12) + ldw t1, (a1, 12) + cmpne t0, t1 + bt 2f + tstnbz t0 + bf 3f + + ldw t0, (a3, 16) + ldw t1, (a1, 16) + cmpne t0, t1 + bt 2f + tstnbz t0 + bf 3f + + ldw t0, (a3, 20) + ldw t1, (a1, 20) + cmpne t0, t1 + bt 2f + tstnbz t0 + bf 3f + + ldw t0, (a3, 24) + ldw t1, (a1, 24) + cmpne t0, t1 + bt 2f + tstnbz t0 + bf 3f + + ldw t0, (a3, 28) + ldw t1, (a1, 28) + cmpne t0, t1 + bt 2f + tstnbz t0 + bf 3f + + addi a3, 32 + addi a1, 32 + + br 1b + + /* s1[i] != s2[i] in word, so we check byte 3. */ +2: + xtrb3 a0, t0 + xtrb3 a2, t1 + subu a0, a2 + bez a2, 4f + bnez a0, 4f + + /* Check byte 2. */ + xtrb2 a0, t0 + xtrb2 a2, t1 + subu a0, a2 + bez a2, 4f + bnez a0, 4f + + /* Check byte 1. */ + xtrb1 a0, t0 + xtrb1 a2, t1 + subu a0, a2 + bez a2, 4f + bnez a0, 4f + + /* Check byte 0. */ + xtrb0 a0, t0 + xtrb0 a2, t1 + subu a0, a2 + + jmp lr +3: + movi a0, 0 +4: + jmp lr + + /* Compare when s1 or s2 is not aligned. */ +5: + subi t1, 4 +6: + ldb a0, (a3, 0) + ldb a2, (a1, 0) + subu a0, a2 + bnez a0, 4b + addi t1, 1 + bez a2, 4b + addi a1, 1 + addi a3, 1 + bez t1, 1b + br 6b + +7: + ldb a0, (a3, 0) + addi a3, 1 + ldb a2, (a1, 0) + addi a1, 1 + subu a0, a2 + bnez a0, 4b + bnez a2, 7b + jmp r15 +END (strcmp) + +libc_hidden_def (strcmp) +.weak strcmp diff --git a/sysdeps/csky/abiv2/strcpy.S b/sysdeps/csky/abiv2/strcpy.S new file mode 100644 index 0000000..3da4fbe --- /dev/null +++ b/sysdeps/csky/abiv2/strcpy.S @@ -0,0 +1,127 @@ +/* The assembly function for string copy. C-SKY ABIV2 version. + Copyright (C) 2018 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 + +ENTRY (strcpy) + mov a3, a0 + /* Check if the src addr is aligned. */ + andi t0, a1, 3 + bnez t0, 11f +1: + /* Check if all the bytes in the word are not zero. */ + ldw a2, (a1) + tstnbz a2 + bf 9f + stw a2, (a3) + + ldw a2, (a1, 4) + tstnbz a2 + bf 2f + stw a2, (a3, 4) + + ldw a2, (a1, 8) + tstnbz a2 + bf 3f + stw a2, (a3, 8) + + ldw a2, (a1, 12) + tstnbz a2 + bf 4f + stw a2, (a3, 12) + + ldw a2, (a1, 16) + tstnbz a2 + bf 5f + stw a2, (a3, 16) + + ldw a2, (a1, 20) + tstnbz a2 + bf 6f + stw a2, (a3, 20) + + ldw a2, (a1, 24) + tstnbz a2 + bf 7f + stw a2, (a3, 24) + + ldw a2, (a1, 28) + tstnbz a2 + bf 8f + stw a2, (a3, 28) + + addi a3, 32 + addi a1, 32 + br 1b + +2: + addi a3, 4 + br 9f + +3: + addi a3, 8 + br 9f + +4: + addi a3, 12 + br 9f + +5: + addi a3, 16 + br 9f + +6: + addi a3, 20 + br 9f + +7: + addi a3, 24 + br 9f + +8: + addi a3, 28 +9: + xtrb3 t0, a2 + st.b t0, (a3) + bez t0, 10f + xtrb2 t0, a2 + st.b t0, (a3, 1) + bez t0, 10f + xtrb1 t0, a2 + st.b t0, (a3, 2) + bez t0, 10f + stw a2, (a3) +10: + jmp lr + +11: + subi t0, 4 +12: + ld.b a2, (a1) + st.b a2, (a3) + bez a2, 10b + addi t0, 1 + addi a1, a1, 1 + addi a3, a3, 1 + bnez t0, 12b + br 1b + +END (strcpy) + +libc_hidden_def (strcpy) +.weak strcpy diff --git a/sysdeps/csky/abiv2/strlen.S b/sysdeps/csky/abiv2/strlen.S new file mode 100644 index 0000000..96083c3 --- /dev/null +++ b/sysdeps/csky/abiv2/strlen.S @@ -0,0 +1,102 @@ +/* The assembly function for string length. C-SKY ABIV2 version. + Copyright (C) 2018 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 + +ENTRY (strlen) + /* Check if the start addr is aligned. */ + mov r3, r0 + andi r1, r0, 3 + movi r2, 4 + movi r0, 0 + bnez r1, .L_start_not_aligned + + LABLE_ALIGN +.L_start_addr_aligned: + /* Check if all the bytes in the word are not zero. */ + ldw r1, (r3) + tstnbz r1 + bf .L_string_tail + + ldw r1, (r3, 4) + addi r0, 4 + tstnbz r1 + bf .L_string_tail + + ldw r1, (r3, 8) + addi r0, 4 + tstnbz r1 + bf .L_string_tail + + ldw r1, (r3, 12) + addi r0, 4 + tstnbz r1 + bf .L_string_tail + + ldw r1, (r3, 16) + addi r0, 4 + tstnbz r1 + bf .L_string_tail + + ldw r1, (r3, 20) + addi r0, 4 + tstnbz r1 + bf .L_string_tail + + ldw r1, (r3, 24) + addi r0, 4 + tstnbz r1 + bf .L_string_tail + + ldw r1, (r3, 28) + addi r0, 4 + tstnbz r1 + bf .L_string_tail + + addi r0, 4 + addi r3, 32 + br .L_start_addr_aligned + +.L_string_tail: + xtrb3 r3, r1 + bez r3, .L_return + addi r0, 1 + xtrb2 r3, r1 + bez r3, .L_return + addi r0, 1 + xtrb1 r3, r1 + bez r3, .L_return + addi r0, 1 + +.L_return: + rts + +.L_start_not_aligned: + sub r2, r2, r1 +.L_start_not_aligned_loop: + ldb r1, (r3) + PRE_BNEZAD (r2) + addi r3, 1 + bez r1, .L_return + addi r0, 1 + BNEZAD (r2, .L_start_not_aligned_loop) + br .L_start_addr_aligned +END (strlen) + +libc_hidden_def (strlen) +.weak strlen diff --git a/sysdeps/csky/abort-instr.h b/sysdeps/csky/abort-instr.h new file mode 100644 index 0000000..27a3536 --- /dev/null +++ b/sysdeps/csky/abort-instr.h @@ -0,0 +1,2 @@ +/* An instruction which should crash any program is a breakpoint. */ +#define ABORT_INSTRUCTION asm ("bkpt") diff --git a/sysdeps/csky/bits/endian.h b/sysdeps/csky/bits/endian.h new file mode 100644 index 0000000..51df38d --- /dev/null +++ b/sysdeps/csky/bits/endian.h @@ -0,0 +1,9 @@ +#ifndef _ENDIAN_H +# error "Never use directly; include instead." +#endif + +#ifdef __CSKYBE__ +# error "Big endian not supported for C-SKY." +#else +# define __BYTE_ORDER __LITTLE_ENDIAN +#endif diff --git a/sysdeps/csky/bits/link.h b/sysdeps/csky/bits/link.h new file mode 100644 index 0000000..13155ac --- /dev/null +++ b/sysdeps/csky/bits/link.h @@ -0,0 +1,55 @@ +/* Machine-specific declarations for dynamic linker interface. C-SKY version. + Copyright (C) 2018 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 + +/* Registers for entry into PLT on C-SKY. */ +typedef struct La_csky_regs +{ + uint32_t lr_reg[4]; + uint32_t lr_sp; + uint32_t lr_lr; +} La_csky_regs; + +/* Return values for calls from PLT on C-SKY. */ +typedef struct La_csky_retval +{ + /* Up to four integer registers can be used for a return value. */ + uint32_t lrv_reg[4]; + uint32_t lrv_v0; +} La_csky_retval; + +__BEGIN_DECLS + +extern Elf32_Addr la_csky_gnu_pltenter (Elf32_Sym *__sym, unsigned int __ndx, + uintptr_t *__refcook, + uintptr_t *__defcook, + La_csky_regs *__regs, + unsigned int *__flags, + const char *__symname, + long int *__framesizep); +extern unsigned int la_csky_gnu_pltexit (Elf32_Sym *__sym, unsigned int __ndx, + uintptr_t *__refcook, + uintptr_t *__defcook, + const La_csky_regs *__inregs, + La_csky_retval *__outregs, + const char *__symname); + +__END_DECLS diff --git a/sysdeps/csky/bits/setjmp.h b/sysdeps/csky/bits/setjmp.h new file mode 100644 index 0000000..6f0cace --- /dev/null +++ b/sysdeps/csky/bits/setjmp.h @@ -0,0 +1,34 @@ +/* Define the machine-dependent type `jmp_buf'. C-SKY version. + Copyright (C) 2018 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 _CSKY_BITS_SETJMP_H +#define _CSKY_BITS_SETJMP_H 1 + +typedef struct __jmp_buf_str + { + /* Stack pointer. */ + int __sp; + int __lr; + /* The actual core defines which registers should be saved. The + buffer contains 32 words, keep space for future growth. + Callee-saved registers: + r4 ~ r11, r16 ~ r17, r26 ~r31 for abiv2; r8 ~ r14 for abiv1. */ + int __regs[32]; + } __jmp_buf[1]; + +#endif diff --git a/sysdeps/csky/bsd-_setjmp.S b/sysdeps/csky/bsd-_setjmp.S new file mode 100644 index 0000000..90b99cd --- /dev/null +++ b/sysdeps/csky/bsd-_setjmp.S @@ -0,0 +1 @@ +/* _setjmp is in setjmp.S. */ diff --git a/sysdeps/csky/bsd-setjmp.S b/sysdeps/csky/bsd-setjmp.S new file mode 100644 index 0000000..d3b823c --- /dev/null +++ b/sysdeps/csky/bsd-setjmp.S @@ -0,0 +1 @@ +/* setjmp is in setjmp.S. */ diff --git a/sysdeps/csky/gccframe.h b/sysdeps/csky/gccframe.h new file mode 100644 index 0000000..9451101 --- /dev/null +++ b/sysdeps/csky/gccframe.h @@ -0,0 +1,21 @@ +/* Definition of object in frame unwind info. C-SKY version. + Copyright (C) 2018 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 71 + +#include diff --git a/sysdeps/csky/jmpbuf-unwind.h b/sysdeps/csky/jmpbuf-unwind.h new file mode 100644 index 0000000..954d7e0 --- /dev/null +++ b/sysdeps/csky/jmpbuf-unwind.h @@ -0,0 +1,48 @@ +/* Examine __jmp_buf for unwinding frames. C-SkY version. + Copyright (C) 2018 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_Ptr) _Unwind_GetCFA (_context), \ + _adj) + +static inline uintptr_t __attribute__ ((unused)) +_jmpbuf_sp (__jmp_buf regs) +{ + uintptr_t sp = (uintptr_t) 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/csky/machine-gmon.h b/sysdeps/csky/machine-gmon.h new file mode 100644 index 0000000..4ef9ca7 --- /dev/null +++ b/sysdeps/csky/machine-gmon.h @@ -0,0 +1,32 @@ +/* Machine-dependent definitions for profiling support. C-SKY version. + Copyright (C) 2018 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 + +/* GCC for the C-SKY cannot compile __builtin_return_address (N) for N != 0, + so we must use an assembly stub. */ + +/* We must not pollute the global namespace. */ +#define mcount_internal __mcount_internal + +extern void mcount_internal (u_long frompc, u_long selfpc); +#define _MCOUNT_DECL(frompc, selfpc) \ + void mcount_internal (u_long frompc, u_long selfpc) + +/* Define MCOUNT as empty since we have the implementation in another file. */ +#define MCOUNT diff --git a/sysdeps/csky/memusage.h b/sysdeps/csky/memusage.h new file mode 100644 index 0000000..67f36cc --- /dev/null +++ b/sysdeps/csky/memusage.h @@ -0,0 +1,21 @@ +/* Machine-specific definitions for memory usage profiling, C-SKY version. + Copyright (C) 2018 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/csky/stackinfo.h b/sysdeps/csky/stackinfo.h new file mode 100644 index 0000000..9b915ba --- /dev/null +++ b/sysdeps/csky/stackinfo.h @@ -0,0 +1,29 @@ +/* Stack environment definitions. C-SKY version. + Copyright (C) 2018 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 _STACKINFO_H +#define _STACKINFO_H 1 + +#include + +/* On C-SKY the stack grows down. */ +#define _STACK_GROWS_DOWN 1 + +#define DEFAULT_STACK_PERMS (PF_R|PF_W) + +#endif /* stackinfo.h */ diff --git a/sysdeps/csky/sysdep.h b/sysdeps/csky/sysdep.h new file mode 100644 index 0000000..526a7d3 --- /dev/null +++ b/sysdeps/csky/sysdep.h @@ -0,0 +1,84 @@ +/* Assembler macros for C-SKY. + Copyright (C) 2018 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 + +#ifdef __ASSEMBLER__ + +# define ASM_SIZE_DIRECTIVE(name) .size name,.-name + +/* Define an entry point visible from C. */ +# define ENTRY(name) \ + .globl name; \ + .type name,@function; \ + .align 4; \ + name##:; \ + cfi_startproc; \ + CALL_MCOUNT + +# undef END +# define END(name) \ + cfi_endproc; \ + ASM_SIZE_DIRECTIVE(name) + +/* If compiled for profiling, call `mcount' at the start of each function. */ +# ifdef PROF +# ifdef __PIC__ +# define CALL_MCOUNT \ + subi sp, 4; \ + stw lr, (sp, 0); \ + grs t0, .Lgetpc; \ +.Lgetpc: \ + lrw gb, .Lgetpc@GOTPC; \ + addu gb, t0; \ + lrw t1, _mcount@PLT; \ + ldr.w t0, (gb, t1 << 0); \ + jmp t0; +# else +# define CALL_MCOUNT \ + subi sp, 4; \ + stw lr, (sp, 0); \ + jbsr _mcount; +# endif +# else +# define CALL_MCOUNT /* Do nothing. */ +# endif + +# if defined (__CK860__) +/* Instruction fetch will be faster when the label is 16 bytes aligned. + Filling with nop instruction to avoid extra jump. */ +# define LABLE_ALIGN \ + .balignw 16, 0x6c03 + +# define PRE_BNEZAD(R) + +# define BNEZAD(R, L) \ + bnezad R, L +# else +# define LABLE_ALIGN \ + .balignw 8, 0x6c03 + +# define PRE_BNEZAD(R) \ + subi R, 1 + +# define BNEZAD(R, L) \ + bnez R, L +# endif + +#endif