From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stafford Horne Date: Wed, 29 Dec 2021 13:42:41 +0900 Subject: [OpenRISC] [PATCH v4 03/13] or1k: ABI Implementation In-Reply-To: <20211229044251.2203653-1-shorne@gmail.com> References: <20211229044251.2203653-1-shorne@gmail.com> Message-ID: <20211229044251.2203653-4-shorne@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: openrisc@lists.librecores.org This code deals with the OpenRISC ABI. --- sysdeps/or1k/__longjmp.S | 50 ++++++++++++++++++++ sysdeps/or1k/bits/endianness.h | 11 +++++ sysdeps/or1k/bits/setjmp.h | 32 +++++++++++++ sysdeps/or1k/bsd-_setjmp.S | 1 + sysdeps/or1k/bsd-setjmp.S | 1 + sysdeps/or1k/dl-trampoline.S | 73 ++++++++++++++++++++++++++++++ sysdeps/or1k/jmpbuf-offsets.h | 23 ++++++++++ sysdeps/or1k/jmpbuf-unwind.h | 36 +++++++++++++++ sysdeps/or1k/machine-gmon.h | 35 ++++++++++++++ sysdeps/or1k/memusage.h | 21 +++++++++ sysdeps/or1k/setjmp.S | 56 +++++++++++++++++++++++ sysdeps/or1k/sysdep.h | 83 ++++++++++++++++++++++++++++++++++ 12 files changed, 422 insertions(+) create mode 100644 sysdeps/or1k/__longjmp.S create mode 100644 sysdeps/or1k/bits/endianness.h create mode 100644 sysdeps/or1k/bits/setjmp.h create mode 100644 sysdeps/or1k/bsd-_setjmp.S create mode 100644 sysdeps/or1k/bsd-setjmp.S create mode 100644 sysdeps/or1k/dl-trampoline.S create mode 100644 sysdeps/or1k/jmpbuf-offsets.h create mode 100644 sysdeps/or1k/jmpbuf-unwind.h create mode 100644 sysdeps/or1k/machine-gmon.h create mode 100644 sysdeps/or1k/memusage.h create mode 100644 sysdeps/or1k/setjmp.S create mode 100644 sysdeps/or1k/sysdep.h diff --git a/sysdeps/or1k/__longjmp.S b/sysdeps/or1k/__longjmp.S new file mode 100644 index 0000000000..32e26ccd64 --- /dev/null +++ b/sysdeps/or1k/__longjmp.S @@ -0,0 +1,50 @@ +/* longjmp, OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#define _ASM +#define _SETJMP_H +#include + +ENTRY (__longjmp) + l.lwz r1, 0(r3) + l.lwz r2, 4(r3) + + /* if r4 is 0, something wrong, so set it to 1 */ + l.sfeqi r4, 0x0 + l.bnf 1f /* r4 != 0, longjmp value sensible */ + l.nop + l.ori r4, r0, 0x1 /* make nonzero */ +1: + l.addi r11, r4, 0 + l.lwz r9, 8(r3) + l.lwz r10, 12(r3) + l.lwz r14, 16(r3) + l.lwz r16, 20(r3) + l.lwz r18, 24(r3) + l.lwz r20, 28(r3) + l.lwz r22, 32(r3) + l.lwz r24, 36(r3) + l.lwz r26, 40(r3) + l.lwz r28, 44(r3) + l.lwz r30, 48(r3) + l.jr r9 + l.nop +END (__longjmp) +libc_hidden_def (__longjmp) diff --git a/sysdeps/or1k/bits/endianness.h b/sysdeps/or1k/bits/endianness.h new file mode 100644 index 0000000000..7b61d8adb7 --- /dev/null +++ b/sysdeps/or1k/bits/endianness.h @@ -0,0 +1,11 @@ +#ifndef _BITS_ENDIANNESS_H +#define _BITS_ENDIANNESS_H 1 + +#ifndef _BITS_ENDIAN_H +# error "Never use directly; include instead." +#endif + +/* OpenRISC is big-endian. */ +#define __BYTE_ORDER __BIG_ENDIAN + +#endif /* bits/endianness.h */ diff --git a/sysdeps/or1k/bits/setjmp.h b/sysdeps/or1k/bits/setjmp.h new file mode 100644 index 0000000000..dac511c904 --- /dev/null +++ b/sysdeps/or1k/bits/setjmp.h @@ -0,0 +1,32 @@ +/* Define the machine-dependent type `jmp_buf'. OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + + +#ifndef _OR1K_BITS_SETJMP_H +#define _OR1K_BITS_SETJMP_H 1 + +#if !defined _SETJMP_H && !defined _PTHREAD_H +# error "Never include directly; use instead." +#endif + +#ifndef _ASM +typedef long int __jmp_buf[13]; +#endif + +#endif /* _OR1K_BITS_SETJMP_H */ diff --git a/sysdeps/or1k/bsd-_setjmp.S b/sysdeps/or1k/bsd-_setjmp.S new file mode 100644 index 0000000000..4e6a2da560 --- /dev/null +++ b/sysdeps/or1k/bsd-_setjmp.S @@ -0,0 +1 @@ +/* _setjmp is in setjmp.S */ diff --git a/sysdeps/or1k/bsd-setjmp.S b/sysdeps/or1k/bsd-setjmp.S new file mode 100644 index 0000000000..1da848d2f1 --- /dev/null +++ b/sysdeps/or1k/bsd-setjmp.S @@ -0,0 +1 @@ +/* setjmp is in setjmp.S */ diff --git a/sysdeps/or1k/dl-trampoline.S b/sysdeps/or1k/dl-trampoline.S new file mode 100644 index 0000000000..f7b1da90df --- /dev/null +++ b/sysdeps/or1k/dl-trampoline.S @@ -0,0 +1,73 @@ +/* Machine-dependent ELF runtime symbol resolution, OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include + +/* This code is plugged into the PLT and used by the dynamic linker to + call _dl_fixup (dl-runtime.c). + + We assume that R11 contains the relocation offset and R12 contains + link_map (_DYNAMIC). This must be consistent with the JUMP_SLOT + layout generated by binutils. */ + +ENTRY (_dl_runtime_resolve) + l.sw -4(r1), r9 + l.sw -8(r1), r1 + + /* save function arguments. */ + l.sw -12(r1), r3 + l.sw -16(r1), r4 + l.sw -20(r1), r5 + l.sw -24(r1), r6 + l.sw -28(r1), r7 + l.sw -32(r1), r8 + + .cfi_offset 9, -4 + .cfi_offset 1, -8 + .cfi_offset 3, -12 + .cfi_offset 4, -16 + .cfi_offset 5, -20 + .cfi_offset 6, -24 + .cfi_offset 7, -28 + .cfi_offset 8, -32 + + l.addi r1,r1, -32 + .cfi_def_cfa_offset 32 + + l.ori r3, r12, 0 + l.ori r4, r11, 0 + + l.jal _dl_fixup + l.nop + + /* Restore function arguments. */ + l.addi r1,r1, 32 + l.lwz r8, -32(r1) + l.lwz r7, -28(r1) + l.lwz r6, -24(r1) + l.lwz r5, -20(r1) + l.lwz r4, -16(r1) + l.lwz r3, -12(r1) + + /* restore return address. */ + l.lwz r9, -4(r1) + + l.jr r11 + l.nop +END (_dl_runtime_resolve) diff --git a/sysdeps/or1k/jmpbuf-offsets.h b/sysdeps/or1k/jmpbuf-offsets.h new file mode 100644 index 0000000000..e33105cc03 --- /dev/null +++ b/sysdeps/or1k/jmpbuf-offsets.h @@ -0,0 +1,23 @@ +/* Private macros for accessing __jmp_buf contents. OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#define __JMP_BUF_SP 0 + +/* Helper for generic function ____longjmp_chk. */ +#define JB_FRAME_ADDRESS(buf) \ + ((void *) (unsigned long) (buf[__JMP_BUF_SP])) diff --git a/sysdeps/or1k/jmpbuf-unwind.h b/sysdeps/or1k/jmpbuf-unwind.h new file mode 100644 index 0000000000..6710dea989 --- /dev/null +++ b/sysdeps/or1k/jmpbuf-unwind.h @@ -0,0 +1,36 @@ +/* Macros to help frame unwinding using jmpbuf. OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#include +#include +#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[__JMP_BUF_SP])) + +#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ + _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj) + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[__JMP_BUF_SP] - (_adj)) + +/* We use the normal longjmp for unwinding. */ +#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) diff --git a/sysdeps/or1k/machine-gmon.h b/sysdeps/or1k/machine-gmon.h new file mode 100644 index 0000000000..7152105eec --- /dev/null +++ b/sysdeps/or1k/machine-gmon.h @@ -0,0 +1,35 @@ +/* Machine-dependent definitions for profiling support. OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#include + +#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 the _mcount + call site. GCC passes in the return address of the function calling + _mcount. */ + +#define MCOUNT \ +void \ +_mcount (void *frompc) \ +{ \ + __mcount_internal ((unsigned long int) frompc, \ + (unsigned long int) __builtin_return_address (0)); \ +} diff --git a/sysdeps/or1k/memusage.h b/sysdeps/or1k/memusage.h new file mode 100644 index 0000000000..a62da17e61 --- /dev/null +++ b/sysdeps/or1k/memusage.h @@ -0,0 +1,21 @@ +/* Definitions for memory usage profiling. OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#define GETSP() ({ register uintptr_t stack_ptr asm ("r1"); stack_ptr; }) + +#include diff --git a/sysdeps/or1k/setjmp.S b/sysdeps/or1k/setjmp.S new file mode 100644 index 0000000000..660995b493 --- /dev/null +++ b/sysdeps/or1k/setjmp.S @@ -0,0 +1,56 @@ +/* setjmp, OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#define _ASM +#define _SETJMP_H +#include + +ENTRY (_setjmp) + l.addi r4, r0, 0 /* Set second argument to 0. */ + l.j .Local__sigsetjmp + l.nop +END (_setjmp) +libc_hidden_def (_setjmp) + +ENTRY (setjmp) + l.addi r4, r0, 1 /* Set second argument to 1. */ + l.j .Local__sigsetjmp + l.nop +END (setjmp) + +ENTRY (__sigsetjmp) +.Local__sigsetjmp: + l.sw 0(r3), r1 + l.sw 4(r3), r2 + l.sw 8(r3), r9 + l.sw 12(r3), r10 + l.sw 16(r3), r14 + l.sw 20(r3), r16 + l.sw 24(r3), r18 + l.sw 28(r3), r20 + l.sw 32(r3), r22 + l.sw 36(r3), r24 + l.sw 40(r3), r26 + l.sw 44(r3), r28 + l.sw 48(r3), r30 + l.j __sigjmp_save + l.nop +END (__sigsetjmp) +hidden_def (__sigsetjmp) diff --git a/sysdeps/or1k/sysdep.h b/sysdeps/or1k/sysdep.h new file mode 100644 index 0000000000..61a135afe7 --- /dev/null +++ b/sysdeps/or1k/sysdep.h @@ -0,0 +1,83 @@ +/* Assembler macro definitions. OpenRISC version. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#include +#include + +#if defined __ASSEMBLER__ || defined REQUEST_ASSEMBLER_MACROS + +/* Make use of .size directive. */ +#define ASM_SIZE_DIRECTIVE(name) .size name,.-name; + +/* Define an entry point visible from C. */ +#define ENTRY(name) \ + .globl C_SYMBOL_NAME(name); \ + .type C_SYMBOL_NAME(name), at function; \ + .align 4; \ + C_LABEL(name) \ + cfi_startproc; \ + CALL_MCOUNT + +#undef END +#define END(name) \ + cfi_endproc; \ + ASM_SIZE_DIRECTIVE(name) + +/* Since C identifiers are not normally prefixed with an underscore + on this system, the asm identifier `syscall_error' intrudes on the + C name space. Make sure we use an innocuous name. */ +#define syscall_error __syscall_error + +/* If compiled for profiling, call `mcount' at the start of each function. */ +#ifdef PROF +# ifdef __PIC__ +# define CALL_MCOUNT \ + l.addi r1, r1, -8; \ + l.sw 0(r1), r9; \ + l.sw 4(r1), r3; \ + l.ori r3, r9, 0; \ + l.j plt(_mcount); \ + l.nop; \ + l.lwz r9, 0(r1); \ + l.lwz r3, 4(r1); \ + l.addi r1, r1, 8; +# else +# define CALL_MCOUNT \ + l.addi r1, r1, -8; \ + l.sw 0(r1), r9; \ + l.sw 4(r1), r3; \ + l.ori r3, r9, 0; \ + l.movhi r15, hi(_mcount); \ + l.ori r15, r15, lo(_mcount); \ + l.jr r15; \ + l.nop; \ + l.lwz r9, 0(r1); \ + l.lwz r3, 4(r1); \ + l.addi r1, r1, 8; +# endif +#else +# define CALL_MCOUNT /* Do nothing. */ +#endif + +/* Local label name for asm code. */ +#define L(name) .L##name + +/* Specify the size in bytes of a machine register. */ +#define REGSIZE 4 + +#endif /* __ASSEMBLER__ */ -- 2.31.1