24 Jun
2015
24 Jun
'15
8:38 p.m.
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- Log -----------------------------------------------------------------
commit 42f4f533c7a4505dd8ee53b42f7fb3db1877f520
Author: Waldemar Brodkorb <wbx(a)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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