--- /dev/null
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+ Contributed by Richard Henderson <rth@redhat.com>.
+
+ This file is part of the GNU Transactional Memory Library (libitm).
+
+ Libitm is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ Libitm 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 General Public License for
+ more details.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sys/syscall.h>
+
+static inline long
+sys_futex0 (std::atomic<int> *addr, int op, int val)
+{
+ register long int r0 __asm__ ("r0");
+ register long int r3 __asm__ ("r3");
+ register long int r4 __asm__ ("r4");
+ register long int r5 __asm__ ("r5");
+ register long int r6 __asm__ ("r6");
+
+ r0 = SYS_futex;
+ r3 = (long) addr;
+ r4 = op;
+ r5 = val;
+ r6 = 0;
+
+ /* ??? The powerpc64 sysdep.h file clobbers ctr; the powerpc32 sysdep.h
+ doesn't. It doesn't much matter for us. In the interest of unity,
+ go ahead and clobber it always. */
+
+ __asm volatile ("sc; mfcr %0"
+ : "=r"(r0), "=r"(r3), "=r"(r4), "=r"(r5), "=r"(r6)
+ : "r"(r0), "r"(r3), "r"(r4), "r"(r5), "r"(r6)
+ : "r7", "r8", "r9", "r10", "r11", "r12",
+ "cr0", "ctr", "memory");
+ if (__builtin_expect (r0 & (1 << 28), 0))
+ return r3;
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+ Contributed by Richard Henderson <rth@redhat.com>.
+
+ This file is part of the GNU Transactional Memory Library (libitm).
+
+ Libitm is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ Libitm 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 General Public License for
+ more details.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+ .text
+
+#include "asmcfi.h"
+
+#if defined(__powerpc64__) && defined(__ELF__)
+.macro FUNC name
+ .globl \name, .\name
+ .section ".opd","aw"
+ .align 3
+\name:
+ .quad .\name, .TOC.@tocbase, 0
+ .size \name, 24
+ .type .\name, @function
+ .text
+.\name:
+.endm
+.macro END name
+ .size .\name, . - .\name
+.endm
+.macro HIDDEN name
+ .hidden \name, .\name
+.endm
+.macro CALL name
+ bl \name
+ nop
+.endm
+#elif defined(__ELF__)
+.macro FUNC name
+ .globl \name
+ .type \name, @function
+\name:
+.endm
+.macro END name
+ .size \name, . - \name
+.endm
+.macro HIDDEN name
+ .hidden \name
+.endm
+.macro CALL name
+ bl \name
+.endm
+#elif defined(_CALL_DARWIN)
+.macro FUNC name
+ .globl _$0
+_$0:
+.endmacro
+.macro END name
+.endmacro
+.macro HIDDEN name
+ .private_extern _$0
+.endmacro
+.macro CALL name
+ bl _$0
+.endmacro
+# ifdef __ppc64__
+ .machine ppc64
+# else
+ .machine ppc7400
+# endif
+#else
+#error "unsupported system"
+#endif
+
+/* Parameterize the naming of registers. */
+#if defined(__ELF__)
+# define r(N) %r##N
+# define f(N) %f##N
+# define v(N) %v##N
+#elif defined(__MACH__)
+# define r(N) r##N
+# define f(N) f##N
+# define v(N) v##N
+#else
+# define r(N) N
+# define f(N) N
+# define v(N) N
+#endif
+
+/* Parameterize the code for 32-bit vs 64-bit. */
+#if defined(__powerpc64__) || defined(__ppc64__)
+#define ldreg ld
+#define streg std
+#define stregu stdu
+#define WS 8
+#else
+#define ldreg lwz
+#define streg stw
+#define stregu stwu
+#define WS 4
+#endif
+
+/* Parameterize the code for call frame constants. */
+#if defined(_CALL_AIXDESC)
+# define BASE 6*WS
+# define LR_SAVE 2*WS
+#elif defined(_CALL_SYSV)
+# define BASE 2*WS
+# define LR_SAVE 1*WS
+#elif defined(_CALL_DARWIN)
+# define BASE (6*WS + 2*WS)
+# define LR_SAVE 2*WS
+#else
+# error "unsupported system"
+#endif
+
+#if defined(__ALTIVEC__) || defined(__VSX__)
+# define OFS_VR 0
+# define OFS_VSCR 12*16
+# define OFS_VR_END OFS_VSCR + 8
+#else
+# define OFS_VR_END 0
+#endif
+#ifndef _SOFT_FLOAT
+# define OFS_FR OFS_VR_END
+# define OFS_FPSCR OFS_FR + 18*8
+# define OFS_FR_END OFS_FPSCR + 8
+#else
+# define OFS_FR_END OFS_VR_END
+#endif
+#define OFS_GR OFS_FR_END
+#define OFS_CFA OFS_GR + 18*WS
+#define OFS_LR OFS_CFA + WS
+#define OFS_TOC OFS_LR + WS
+#define OFS_CR OFS_TOC + WS
+#define OFS_END (((OFS_CR + WS + 15) / 16) * 16)
+
+#define FRAME (((BASE + OFS_END + 15) / 16) * 16)
+#define VRSAVE 256
+
+ .align 4
+FUNC _ITM_beginTransaction
+ cfi_startproc
+ mflr r(0)
+ mfcr r(5)
+ addi r(4), r(1), -OFS_END
+ mr r(6), r(1)
+ streg r(0), LR_SAVE(r(1))
+ stregu r(1), -FRAME(r(1))
+ cfi_def_cfa_offset(FRAME)
+ cfi_offset(65, LR_SAVE)
+ streg r(6), OFS_CFA(r(4))
+ streg r(0), OFS_LR(r(4))
+#ifdef _CALL_DARWIN
+ streg r(13), OFS_TOC(r(4))
+#else
+ streg r(2), OFS_TOC(r(4))
+#endif
+ streg r(5), OFS_CR(r(4))
+ streg r(14), 0*WS+OFS_GR(r(4))
+ streg r(15), 1*WS+OFS_GR(r(4))
+ streg r(16), 2*WS+OFS_GR(r(4))
+ streg r(17), 3*WS+OFS_GR(r(4))
+ streg r(18), 4*WS+OFS_GR(r(4))
+ streg r(19), 5*WS+OFS_GR(r(4))
+ streg r(20), 6*WS+OFS_GR(r(4))
+ streg r(21), 7*WS+OFS_GR(r(4))
+ streg r(22), 8*WS+OFS_GR(r(4))
+ streg r(23), 9*WS+OFS_GR(r(4))
+ streg r(24), 10*WS+OFS_GR(r(4))
+ streg r(25), 11*WS+OFS_GR(r(4))
+ streg r(26), 12*WS+OFS_GR(r(4))
+ streg r(27), 13*WS+OFS_GR(r(4))
+ streg r(28), 14*WS+OFS_GR(r(4))
+ streg r(29), 15*WS+OFS_GR(r(4))
+ streg r(30), 16*WS+OFS_GR(r(4))
+ streg r(31), 17*WS+OFS_GR(r(4))
+
+#ifndef _SOFT_FLOAT
+ /* ??? Determine when FPRs not present. */
+ /* ??? Test r(3) for pr_hasNoFloatUpdate and skip the fp save.
+ This is not yet set by the compiler. */
+ mffs f(0)
+ stfd f(14), 0+OFS_FR(r(4))
+ stfd f(15), 8+OFS_FR(r(4))
+ stfd f(16), 16+OFS_FR(r(4))
+ stfd f(17), 24+OFS_FR(r(4))
+ stfd f(18), 32+OFS_FR(r(4))
+ stfd f(19), 40+OFS_FR(r(4))
+ stfd f(20), 48+OFS_FR(r(4))
+ stfd f(21), 56+OFS_FR(r(4))
+ stfd f(22), 64+OFS_FR(r(4))
+ stfd f(23), 72+OFS_FR(r(4))
+ stfd f(24), 80+OFS_FR(r(4))
+ stfd f(25), 88+OFS_FR(r(4))
+ stfd f(26), 96+OFS_FR(r(4))
+ stfd f(27),104+OFS_FR(r(4))
+ stfd f(28),112+OFS_FR(r(4))
+ stfd f(29),120+OFS_FR(r(4))
+ stfd f(30),128+OFS_FR(r(4))
+ stfd f(31),136+OFS_FR(r(4))
+ stfd f(0), OFS_FPSCR(r(4))
+#endif
+
+#if defined(__ALTIVEC__)
+ /* ??? Determine when VRs not present. */
+ /* ??? Test r(3) for pr_hasNoVectorUpdate and skip the vr save.
+ This is not yet set by the compiler. */
+ addi r(5), r(4), OFS_VR
+ addi r(6), r(4), OFS_VR+16
+ mfspr r(0), VRSAVE
+ stvx v(20), 0, r(5)
+ addi r(5), r(5), 32
+ stvx v(21), 0, r(6)
+ addi r(6), r(6), 32
+ stvx v(22), 0, r(5)
+ addi r(5), r(5), 32
+ stvx v(23), 0, r(6)
+ addi r(6), r(6), 32
+ stvx v(25), 0, r(5)
+ addi r(5), r(5), 32
+ stvx v(26), 0, r(6)
+ addi r(6), r(6), 32
+ stvx v(26), 0, r(5)
+ addi r(5), r(5), 32
+ stvx v(27), 0, r(6)
+ addi r(6), r(6), 32
+ stvx v(28), 0, r(5)
+ addi r(5), r(5), 32
+ stvx v(29), 0, r(6)
+ addi r(6), r(6), 32
+ stvx v(30), 0, r(5)
+ stvx v(31), 0, r(6)
+ streg r(0), OFS_VSCR(r(4))
+#endif
+
+ CALL GTM_begin_transaction
+
+ ldreg r(0), LR_SAVE+FRAME(r(1))
+ mtlr r(0)
+ addi r(1), r(1), FRAME
+ cfi_def_cfa_offset(0)
+ cfi_restore(65)
+ blr
+ cfi_endproc
+END _ITM_beginTransaction
+
+ .align 4
+ HIDDEN GTM_longjmp
+FUNC GTM_longjmp
+ cfi_startproc
+#if defined(__ALTIVEC__) || defined(__VSX__)
+ /* ??? Determine when VRs not present. */
+ /* ??? Test r(5) for pr_hasNoVectorUpdate and skip the vr restore.
+ This is not yet set by the compiler. */
+ addi r(6), r(4), OFS_VR
+ addi r(7), r(4), OFS_VR+16
+ ldreg r(0), OFS_VSCR(r(4))
+ cfi_undefined(v(20))
+ cfi_undefined(v(21))
+ cfi_undefined(v(22))
+ cfi_undefined(v(23))
+ cfi_undefined(v(24))
+ cfi_undefined(v(25))
+ cfi_undefined(v(26))
+ cfi_undefined(v(27))
+ cfi_undefined(v(28))
+ cfi_undefined(v(29))
+ cfi_undefined(v(30))
+ cfi_undefined(v(31))
+ lvx v(20), 0, r(6)
+ addi r(6), r(6), 32
+ lvx v(21), 0, r(7)
+ addi r(7), r(7), 32
+ lvx v(22), 0, r(6)
+ addi r(6), r(6), 32
+ lvx v(23), 0, r(7)
+ addi r(7), r(7), 32
+ lvx v(24), 0, r(6)
+ addi r(6), r(6), 32
+ lvx v(25), 0, r(7)
+ addi r(7), r(7), 32
+ lvx v(26), 0, r(6)
+ addi r(6), r(6), 32
+ lvx v(27), 0, r(7)
+ addi r(7), r(7), 32
+ lvx v(28), 0, r(6)
+ addi r(6), r(6), 32
+ lvx v(29), 0, r(7)
+ addi r(7), r(7), 32
+ lvx v(30), 0, r(6)
+ lvx v(31), 0, r(7)
+ mtspr VRSAVE, r(0)
+#endif
+
+#ifndef _SOFT_FLOAT
+ /* ??? Determine when FPRs not present. */
+ /* ??? Test r(5) for pr_hasNoFloatUpdate and skip the fp load.
+ This is not yet set by the compiler. */
+ lfd f(0), OFS_FPSCR(r(4))
+ cfi_undefined(f(14))
+ cfi_undefined(f(15))
+ cfi_undefined(f(16))
+ cfi_undefined(f(17))
+ cfi_undefined(f(18))
+ cfi_undefined(f(19))
+ cfi_undefined(f(20))
+ cfi_undefined(f(21))
+ cfi_undefined(f(22))
+ cfi_undefined(f(23))
+ cfi_undefined(f(24))
+ cfi_undefined(f(25))
+ cfi_undefined(f(26))
+ cfi_undefined(f(27))
+ cfi_undefined(f(28))
+ cfi_undefined(f(29))
+ cfi_undefined(f(30))
+ cfi_undefined(f(31))
+ lfd f(14), 0+OFS_FR(r(4))
+ lfd f(15), 8+OFS_FR(r(4))
+ lfd f(16), 16+OFS_FR(r(4))
+ lfd f(17), 24+OFS_FR(r(4))
+ lfd f(18), 32+OFS_FR(r(4))
+ lfd f(19), 40+OFS_FR(r(4))
+ lfd f(20), 48+OFS_FR(r(4))
+ lfd f(21), 56+OFS_FR(r(4))
+ lfd f(22), 64+OFS_FR(r(4))
+ lfd f(23), 72+OFS_FR(r(4))
+ lfd f(24), 80+OFS_FR(r(4))
+ lfd f(25), 88+OFS_FR(r(4))
+ lfd f(26), 96+OFS_FR(r(4))
+ lfd f(27),104+OFS_FR(r(4))
+ lfd f(28),112+OFS_FR(r(4))
+ lfd f(29),120+OFS_FR(r(4))
+ lfd f(30),128+OFS_FR(r(4))
+ lfd f(31),136+OFS_FR(r(4))
+ mtfsf 0xff, f(0)
+#endif
+
+ ldreg r(6), OFS_CFA(r(4))
+ ldreg r(0), OFS_LR(r(4))
+#ifdef _CALL_DARWIN
+ ldreg r(13), OFS_TOC(r(4))
+#else
+ ldreg r(2), OFS_TOC(r(4))
+#endif
+ ldreg r(7), OFS_CR(r(4))
+ /* At the instant we restore the LR, the only coherent view of
+ the world we have is into the new stack frame. Define the
+ CFA in terms of the not-yet-restored stack pointer. This will
+ last until the end of the function. */
+ mtlr r(0)
+ cfi_def_cfa(r(6), 0)
+ cfi_undefined(r(14))
+ cfi_undefined(r(15))
+ cfi_undefined(r(16))
+ cfi_undefined(r(17))
+ cfi_undefined(r(18))
+ cfi_undefined(r(19))
+ cfi_undefined(r(20))
+ cfi_undefined(r(21))
+ cfi_undefined(r(22))
+ cfi_undefined(r(23))
+ cfi_undefined(r(24))
+ cfi_undefined(r(25))
+ cfi_undefined(r(26))
+ cfi_undefined(r(27))
+ cfi_undefined(r(28))
+ cfi_undefined(r(29))
+ cfi_undefined(r(30))
+ cfi_undefined(r(31))
+ mtcr r(7)
+ ldreg r(14), 0*WS+OFS_GR(r(4))
+ ldreg r(15), 1*WS+OFS_GR(r(4))
+ ldreg r(16), 2*WS+OFS_GR(r(4))
+ ldreg r(17), 3*WS+OFS_GR(r(4))
+ ldreg r(18), 4*WS+OFS_GR(r(4))
+ ldreg r(19), 5*WS+OFS_GR(r(4))
+ ldreg r(20), 6*WS+OFS_GR(r(4))
+ ldreg r(21), 7*WS+OFS_GR(r(4))
+ ldreg r(22), 8*WS+OFS_GR(r(4))
+ ldreg r(23), 9*WS+OFS_GR(r(4))
+ ldreg r(24), 10*WS+OFS_GR(r(4))
+ ldreg r(25), 11*WS+OFS_GR(r(4))
+ ldreg r(26), 12*WS+OFS_GR(r(4))
+ ldreg r(27), 13*WS+OFS_GR(r(4))
+ ldreg r(28), 14*WS+OFS_GR(r(4))
+ ldreg r(29), 15*WS+OFS_GR(r(4))
+ ldreg r(30), 16*WS+OFS_GR(r(4))
+ ldreg r(31), 17*WS+OFS_GR(r(4))
+ mr r(1), r(6)
+ blr
+ cfi_endproc
+END GTM_longjmp
+
+#ifdef __linux__
+.section .note.GNU-stack, "", @progbits
+#endif
projects / platform / upstream / linaro-gcc.git / commitdiff