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Sync VEX/LICENSE.GPL with top-level COPYING file. We used 3 different addresses for writing to the FSF to receive a copy of the GPL. Replace all different variants with an URL <http://www.gnu.org/licenses/>. The following files might still have some slightly different (L)GPL copyright notice because they were derived from other programs: - files under coregrind/m_demangle which come from libiberty: cplus-dem.c, d-demangle.c, demangle.h, rust-demangle.c, safe-ctype.c and safe-ctype.h - coregrind/m_demangle/dyn-string.[hc] derived from GCC. - coregrind/m_demangle/ansidecl.h derived from glibc. - VEX files for FMA detived from glibc: host_generic_maddf.h and host_generic_maddf.c - files under coregrin/m_debuginfo derived from LZO: lzoconf.h, lzodefs.h, minilzo-inl.c and minilzo.h - files under coregrind/m_gdbserver detived from GDB: gdb/signals.h, inferiors.c, regcache.c, regcache.h, regdef.h, remote-utils.c, server.c, server.h, signals.c, target.c, target.h and utils.c Plus the following test files: - none/tests/ppc32/testVMX.c derived from testVMX. - ppc tests derived from QEMU: jm-insns.c, ppc64_helpers.h and test_isa_3_0.c - tests derived from bzip2 (with embedded GPL text in code): hackedbz2.c, origin5-bz2.c, varinfo6.c - tests detived from glibc: str_tester.c, pth_atfork1.c - test detived from GCC libgomp: tc17_sembar.c - performance tests derived from bzip2 or tinycc (with embedded GPL text in code): bz2.c, test_input_for_tinycc.c and tinycc.c
203 lines
8.2 KiB
C
203 lines
8.2 KiB
C
/* -*- mode: C; c-basic-offset: 3; -*- */
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/*--------------------------------------------------------------------*/
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/*--- MemCheck: some non-generic asm implementations of mc_main.c */
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/*--- functions ---*/
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/*--- mc_main_asm.c ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of MemCheck, a heavyweight Valgrind tool for
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detecting memory errors.
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Copyright (C) 2000-2018 Julian Seward
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jseward@acm.org
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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The GNU General Public License is contained in the file COPYING.
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*/
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/* Having these in mc_main.c gives undefined references at link time,
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when compiling with lto. Having them in a separate file solves this.
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Also, for some toolchain, we might maybe need to disable lto. */
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// A bunch of include only needed for mc_include.h
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#include "pub_tool_basics.h"
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#include "pub_tool_poolalloc.h"
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#include "pub_tool_hashtable.h"
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#include "pub_tool_tooliface.h"
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#include "mc_include.h"
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// Non-generic assembly for arm32-linux
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#if ENABLE_ASSEMBLY_HELPERS && defined(PERF_FAST_LOADV) \
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&& defined(VGP_arm_linux)
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__asm__( /* Derived from the 32 bit assembly helper */
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".text \n"
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".align 2 \n"
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".global vgMemCheck_helperc_LOADV64le \n"
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".type vgMemCheck_helperc_LOADV64le, %function \n"
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"vgMemCheck_helperc_LOADV64le: \n"
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" tst r0, #7 \n"
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" movw r3, #:lower16:primary_map \n"
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" bne .LLV64LEc4 \n" // if misaligned
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" lsr r2, r0, #16 \n"
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" movt r3, #:upper16:primary_map \n"
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" ldr r2, [r3, r2, lsl #2] \n"
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" uxth r1, r0 \n" // r1 is 0-(16)-0 X-(13)-X 000
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" movw r3, #0xAAAA \n"
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" lsr r1, r1, #2 \n" // r1 is 0-(16)-0 00 X-(13)-X 0
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" ldrh r1, [r2, r1] \n"
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" cmp r1, r3 \n" // 0xAAAA == VA_BITS16_DEFINED
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" bne .LLV64LEc0 \n" // if !all_defined
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" mov r1, #0x0 \n" // 0x0 == V_BITS32_DEFINED
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" mov r0, #0x0 \n" // 0x0 == V_BITS32_DEFINED
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" bx lr \n"
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".LLV64LEc0: \n"
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" movw r3, #0x5555 \n"
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" cmp r1, r3 \n" // 0x5555 == VA_BITS16_UNDEFINED
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" bne .LLV64LEc4 \n" // if !all_undefined
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" mov r1, #0xFFFFFFFF \n" // 0xFFFFFFFF == V_BITS32_UNDEFINED
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" mov r0, #0xFFFFFFFF \n" // 0xFFFFFFFF == V_BITS32_UNDEFINED
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" bx lr \n"
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".LLV64LEc4: \n"
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" push {r4, lr} \n"
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" mov r2, #0 \n"
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" mov r1, #64 \n"
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" bl mc_LOADVn_slow \n"
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" pop {r4, pc} \n"
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".size vgMemCheck_helperc_LOADV64le, .-vgMemCheck_helperc_LOADV64le \n"
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".previous\n"
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);
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#elif ENABLE_ASSEMBLY_HELPERS && defined(PERF_FAST_LOADV) \
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&& (defined(VGP_x86_linux) || defined(VGP_x86_solaris))
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__asm__(
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".text\n"
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".align 16\n"
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".global vgMemCheck_helperc_LOADV64le\n"
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".type vgMemCheck_helperc_LOADV64le, @function\n"
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"vgMemCheck_helperc_LOADV64le:\n"
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" test $0x7, %eax\n"
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" jne .LLV64LE2\n" /* jump if not aligned */
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" mov %eax, %ecx\n"
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" movzwl %ax, %edx\n"
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" shr $0x10, %ecx\n"
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" mov primary_map(,%ecx,4), %ecx\n"
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" shr $0x3, %edx\n"
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" movzwl (%ecx,%edx,2), %edx\n"
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" cmp $0xaaaa, %edx\n"
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" jne .LLV64LE1\n" /* jump if not all defined */
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" xor %eax, %eax\n" /* return 0 in edx:eax */
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" xor %edx, %edx\n"
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" ret\n"
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".LLV64LE1:\n"
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" cmp $0x5555, %edx\n"
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" jne .LLV64LE2\n" /* jump if not all undefined */
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" or $0xffffffff, %eax\n" /* else return all bits set in edx:eax */
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" or $0xffffffff, %edx\n"
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" ret\n"
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".LLV64LE2:\n"
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" xor %ecx, %ecx\n" /* tail call to mc_LOADVn_slow(a, 64, 0) */
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" mov $64, %edx\n"
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" jmp mc_LOADVn_slow\n"
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".size vgMemCheck_helperc_LOADV64le, .-vgMemCheck_helperc_LOADV64le\n"
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".previous\n"
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);
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#else
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// Generic for all platforms except {arm32,x86}-linux and x86-solaris
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// is in mc_main.c
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#endif
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// Non-generic assembly for arm32-linux
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#if ENABLE_ASSEMBLY_HELPERS && defined(PERF_FAST_LOADV) \
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&& defined(VGP_arm_linux)
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__asm__( /* Derived from NCode template */
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".text \n"
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".align 2 \n"
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".global vgMemCheck_helperc_LOADV32le \n"
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".type vgMemCheck_helperc_LOADV32le, %function \n"
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"vgMemCheck_helperc_LOADV32le: \n"
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" tst r0, #3 \n" // 1
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" movw r3, #:lower16:primary_map \n" // 1
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" bne .LLV32LEc4 \n" // 2 if misaligned
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" lsr r2, r0, #16 \n" // 3
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" movt r3, #:upper16:primary_map \n" // 3
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" ldr r2, [r3, r2, lsl #2] \n" // 4
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" uxth r1, r0 \n" // 4
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" ldrb r1, [r2, r1, lsr #2] \n" // 5
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" cmp r1, #0xAA \n" // 6 0xAA == VA_BITS8_DEFINED
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" bne .LLV32LEc0 \n" // 7 if !all_defined
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" mov r0, #0x0 \n" // 8 0x0 == V_BITS32_DEFINED
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" bx lr \n" // 9
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".LLV32LEc0: \n"
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" cmp r1, #0x55 \n" // 0x55 == VA_BITS8_UNDEFINED
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" bne .LLV32LEc4 \n" // if !all_undefined
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" mov r0, #0xFFFFFFFF \n" // 0xFFFFFFFF == V_BITS32_UNDEFINED
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" bx lr \n"
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".LLV32LEc4: \n"
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" push {r4, lr} \n"
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" mov r2, #0 \n"
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" mov r1, #32 \n"
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" bl mc_LOADVn_slow \n"
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" pop {r4, pc} \n"
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".size vgMemCheck_helperc_LOADV32le, .-vgMemCheck_helperc_LOADV32le \n"
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".previous\n"
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);
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#elif ENABLE_ASSEMBLY_HELPERS && defined(PERF_FAST_LOADV) \
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&& (defined(VGP_x86_linux) || defined(VGP_x86_solaris))
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__asm__(
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".text\n"
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".align 16\n"
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".global vgMemCheck_helperc_LOADV32le\n"
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".type vgMemCheck_helperc_LOADV32le, @function\n"
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"vgMemCheck_helperc_LOADV32le:\n"
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" test $0x3, %eax\n"
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" jnz .LLV32LE2\n" /* jump if misaligned */
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" mov %eax, %edx\n"
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" shr $16, %edx\n"
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" mov primary_map(,%edx,4), %ecx\n"
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" movzwl %ax, %edx\n"
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" shr $2, %edx\n"
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" movzbl (%ecx,%edx,1), %edx\n"
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" cmp $0xaa, %edx\n" /* compare to VA_BITS8_DEFINED */
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" jne .LLV32LE1\n" /* jump if not completely defined */
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" xor %eax, %eax\n" /* else return V_BITS32_DEFINED */
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" ret\n"
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".LLV32LE1:\n"
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" cmp $0x55, %edx\n" /* compare to VA_BITS8_UNDEFINED */
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" jne .LLV32LE2\n" /* jump if not completely undefined */
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" or $0xffffffff, %eax\n" /* else return V_BITS32_UNDEFINED */
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" ret\n"
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".LLV32LE2:\n"
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" xor %ecx, %ecx\n" /* tail call mc_LOADVn_slow(a, 32, 0) */
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" mov $32, %edx\n"
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" jmp mc_LOADVn_slow\n"
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".size vgMemCheck_helperc_LOADV32le, .-vgMemCheck_helperc_LOADV32le\n"
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".previous\n"
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);
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#else
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// Generic for all platforms except {arm32,x86}-linux and x86-solaris
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// is in mc_main.c
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#endif
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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