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- Log ----------------------------------------------------------------- commit 42f4f533c7a4505dd8ee53b42f7fb3db1877f520 Author: Waldemar Brodkorb wbx@openadk.org Date: Wed Jun 24 15:54:28 2015 -0500

mips64: patches from OpenWrt

Add these changes to get mips64 with n32 ABI working.

-----------------------------------------------------------------------

Summary of changes: extra/Configs/Config.in | 1 + libc/sysdeps/linux/mips/sysdep.h | 20 ++- .../unix/sysv/linux/mips/mips64/sysdep-cancel.h | 182 ++++++++++++++++++++ 3 files changed, 202 insertions(+), 1 deletion(-) create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h

diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index 2f64b79..4fbd398 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -226,6 +226,7 @@ config TARGET_SUBARCH default "i586" if CONFIG_586 default "i686" if CONFIG_686 default "arcv2" if CONFIG_ARC_CPU_HS + default "mips64" if CONFIG_MIPS_N64_ABI default ""

source "extra/Configs/Config.in.arch" diff --git a/libc/sysdeps/linux/mips/sysdep.h b/libc/sysdeps/linux/mips/sysdep.h index 86873ac..0ed0500 100644 --- a/libc/sysdeps/linux/mips/sysdep.h +++ b/libc/sysdeps/linux/mips/sysdep.h @@ -93,7 +93,8 @@ backwards into the previous fn. */

#ifdef __PIC__ -#define PSEUDO(name, syscall_name, args) \ +# if _MIPS_SIM == _ABIO32 +# define PSEUDO(name, syscall_name, args) \ .align 2; \ 99: move a0, v0; \ la t9,__syscall_error; \ @@ -106,6 +107,23 @@ .set reorder; \ bne a3, zero, 99b; \ L(syse1): +# else +# define PSEUDO(name, syscall_name, args) \ + .align 2; \ + 99: \ + .set noat; \ + .cpsetup t9, $1, name; \ + .set at; \ + move a0, v0; \ + dla t9,__syscall_error; \ + .cpreturn; \ + jr t9; \ + ENTRY(name) \ + li v0, SYS_ify(syscall_name); \ + syscall; \ + bne a3, zero, 99b; \ +L(syse1): +# endif #else #define PSEUDO(name, syscall_name, args) \ .set noreorder; \ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h new file mode 100644 index 0000000..74f3db9 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h @@ -0,0 +1,182 @@ +/* Copyright (C) 2003, 2004, 2005, 2006 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 <tls.h> +#ifndef __ASSEMBLER__ +# include <pthreadP.h> +#endif +#include <sys/asm.h> + +/* Gas will put the initial save of $gp into the CIE, because it appears to + happen before any instructions. So we use cfi_same_value instead of + cfi_restore. */ + +#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt + +#ifdef __PIC__ +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .align 2; \ + L(pseudo_start): \ + cfi_startproc; \ + cfi_adjust_cfa_offset (STKSPACE); \ + cfi_rel_offset (gp, STKOFF_GP); \ + 99: move a0, v0; \ + PTR_LA t9,__syscall_error; \ + /* manual cpreturn */ \ + REG_L gp, STKOFF_GP(sp); \ + cfi_same_value (gp); \ + RESTORESTK; \ + jr t9; \ + .type __##syscall_name##_nocancel, @function; \ + .globl __##syscall_name##_nocancel; \ + __##syscall_name##_nocancel: \ + SAVESTK; \ + .cpsetup t9, STKOFF_GP, name; \ + cfi_rel_offset (gp, STKOFF_GP); \ + li v0, SYS_ify(syscall_name); \ + syscall; \ + bne a3, zero, SYSCALL_ERROR_LABEL; \ + /* manual cpreturn */ \ + REG_L gp, STKOFF_GP(sp); \ + cfi_same_value (gp); \ + RESTORESTK; \ + ret; \ + .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \ + ENTRY (name) \ + SAVESTK; \ + .cpsetup t9, STKOFF_GP, name; \ + cfi_rel_offset (gp, STKOFF_GP); \ + SINGLE_THREAD_P(v1); \ + bne zero, v1, L(pseudo_cancel); \ + .set noreorder; \ + li v0, SYS_ify(syscall_name); \ + syscall; \ + .set reorder; \ + bne a3, zero, SYSCALL_ERROR_LABEL; \ + /* manual cpreturn */ \ + REG_L gp, STKOFF_GP(sp); \ + cfi_same_value (gp); \ + RESTORESTK; \ + ret; \ + L(pseudo_cancel): \ + cfi_adjust_cfa_offset (STKSPACE); \ + cfi_rel_offset (gp, STKOFF_GP); \ + REG_S ra, STKOFF_RA(sp); \ + cfi_rel_offset (ra, STKOFF_RA); \ + PUSHARGS_##args; /* save syscall args */ \ + CENABLE; \ + REG_S v0, STKOFF_SVMSK(sp); /* save mask */ \ + POPARGS_##args; /* restore syscall args */ \ + .set noreorder; \ + li v0, SYS_ify (syscall_name); \ + syscall; \ + .set reorder; \ + REG_S v0, STKOFF_SC_V0(sp); /* save syscall result */ \ + REG_S a3, STKOFF_SC_ERR(sp); /* save syscall error flag */ \ + REG_L a0, STKOFF_SVMSK(sp); /* pass mask as arg1 */ \ + CDISABLE; \ + REG_L a3, STKOFF_SC_ERR(sp); /* restore syscall error flag */ \ + REG_L ra, STKOFF_RA(sp); /* restore return address */ \ + REG_L v0, STKOFF_SC_V0(sp); /* restore syscall result */ \ + bne a3, zero, SYSCALL_ERROR_LABEL; \ + /* manual cpreturn */ \ + REG_L gp, STKOFF_GP(sp); \ + cfi_same_value (gp); \ + RESTORESTK; \ + L(pseudo_end): + + +# undef PSEUDO_END +# define PSEUDO_END(sym) cfi_endproc; .end sym; .size sym,.-sym + +#endif + +# define PUSHARGS_0 /* nothing to do */ +# define PUSHARGS_1 PUSHARGS_0 REG_S a0, STKOFF_A0(sp); cfi_rel_offset (a0, STKOFF_A0); +# define PUSHARGS_2 PUSHARGS_1 REG_S a1, STKOFF_A1(sp); cfi_rel_offset (a1, STKOFF_A1); +# define PUSHARGS_3 PUSHARGS_2 REG_S a2, STKOFF_A2(sp); cfi_rel_offset (a2, STKOFF_A2); +# define PUSHARGS_4 PUSHARGS_3 REG_S a3, STKOFF_A3(sp); cfi_rel_offset (a3, STKOFF_A3); +# define PUSHARGS_5 PUSHARGS_4 REG_S a4, STKOFF_A4(sp); cfi_rel_offset (a3, STKOFF_A4); +# define PUSHARGS_6 PUSHARGS_5 REG_S a5, STKOFF_A5(sp); cfi_rel_offset (a3, STKOFF_A5); + +# define POPARGS_0 /* nothing to do */ +# define POPARGS_1 POPARGS_0 REG_L a0, STKOFF_A0(sp); +# define POPARGS_2 POPARGS_1 REG_L a1, STKOFF_A1(sp); +# define POPARGS_3 POPARGS_2 REG_L a2, STKOFF_A2(sp); +# define POPARGS_4 POPARGS_3 REG_L a3, STKOFF_A3(sp); +# define POPARGS_5 POPARGS_4 REG_L a4, STKOFF_A4(sp); +# define POPARGS_6 POPARGS_5 REG_L a5, STKOFF_A5(sp); + +/* Save an even number of slots. Should be 0 if an even number of slots + are used below, or SZREG if an odd number are used. */ +# define STK_PAD SZREG + +/* Place values that we are more likely to use later in this sequence, i.e. + closer to the SP at function entry. If you do that, the are more + likely to already be in your d-cache. */ +# define STKOFF_A5 (STK_PAD) +# define STKOFF_A4 (STKOFF_A5 + SZREG) +# define STKOFF_A3 (STKOFF_A4 + SZREG) +# define STKOFF_A2 (STKOFF_A3 + SZREG) /* MT and more args. */ +# define STKOFF_A1 (STKOFF_A2 + SZREG) /* MT and 2 args. */ +# define STKOFF_A0 (STKOFF_A1 + SZREG) /* MT and 1 arg. */ +# define STKOFF_RA (STKOFF_A0 + SZREG) /* Used if MT. */ +# define STKOFF_SC_V0 (STKOFF_RA + SZREG) /* Used if MT. */ +# define STKOFF_SC_ERR (STKOFF_SC_V0 + SZREG) /* Used if MT. */ +# define STKOFF_SVMSK (STKOFF_SC_ERR + SZREG) /* Used if MT. */ +# define STKOFF_GP (STKOFF_SVMSK + SZREG) /* Always used. */ + +# define STKSPACE (STKOFF_GP + SZREG) +# define SAVESTK PTR_SUBU sp, STKSPACE; cfi_adjust_cfa_offset(STKSPACE) +# define RESTORESTK PTR_ADDU sp, STKSPACE; cfi_adjust_cfa_offset(-STKSPACE) + +# ifdef IS_IN_libpthread +# define CENABLE PTR_LA t9, __pthread_enable_asynccancel; jalr t9 +# define CDISABLE PTR_LA t9, __pthread_disable_asynccancel; jalr t9 +# elif defined IS_IN_librt +# define CENABLE PTR_LA t9, __librt_enable_asynccancel; jalr t9 +# define CDISABLE PTR_LA t9, __librt_disable_asynccancel; jalr t9 +# else +# define CENABLE PTR_LA t9, __libc_enable_asynccancel; jalr t9 +# define CDISABLE PTR_LA t9, __libc_disable_asynccancel; jalr t9 +# endif + +# ifndef __ASSEMBLER__ +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) \ + == 0, 1) +# else +# define SINGLE_THREAD_P(reg) \ + READ_THREAD_POINTER(reg); \ + lw reg, MULTIPLE_THREADS_OFFSET(reg) +#endif + +#elif !defined __ASSEMBLER__ + +# define SINGLE_THREAD_P 1 +# define NO_CANCELLATION 1 + +#endif + +#ifndef __ASSEMBLER__ +# define RTLD_SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +#endif

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