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From: Julian S. <se...@so...> - 2018-07-14 13:52:38
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=f5a206ccae36d44be5e28e359401bdad13277e72 commit f5a206ccae36d44be5e28e359401bdad13277e72 Author: Julian Seward <js...@ac...> Date: Sat Jul 14 15:50:43 2018 +0200 arm64 front end: do early writeback for "str dX, [sp, #-imm]!". n-i-bz. This is needed to make Memcheck usable on arm64 code generated by clang 6. Diff: --- VEX/priv/guest_arm64_toIR.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/VEX/priv/guest_arm64_toIR.c b/VEX/priv/guest_arm64_toIR.c index e5af388..34035c0 100644 --- a/VEX/priv/guest_arm64_toIR.c +++ b/VEX/priv/guest_arm64_toIR.c @@ -5720,6 +5720,19 @@ Bool dis_ARM64_load_store(/*MB_OUT*/DisResult* dres, UInt insn, assign(tRN, getIReg64orSP(nn)); assign(tEA, binop(Iop_Add64, mkexpr(tRN), mkU64(simm9))); tTA = atRN ? tRN : tEA; + + /* Do early writeback for the cases typified by + str d8, [sp, #-32]! + str d10, [sp, #-128]! + for the same reasons as described in a similar comment in the + "LDP,STP (immediate, simm7) (FP&VEC)" case just above. + */ + Bool earlyWBack + = !atRN && !isLD && ty == Ity_F64 && nn == 31 && ((Long)simm9) < 0; + + if (earlyWBack) + putIReg64orSP(nn, mkexpr(tEA)); + if (isLD) { if (szLg2 < 4) { putQReg128(tt, mkV128(0x0000)); @@ -5728,7 +5741,10 @@ Bool dis_ARM64_load_store(/*MB_OUT*/DisResult* dres, UInt insn, } else { storeLE(mkexpr(tTA), getQRegLO(tt, ty)); } - putIReg64orSP(nn, mkexpr(tEA)); + + if (!earlyWBack) + putIReg64orSP(nn, mkexpr(tEA)); + DIP(atRN ? "%s %s, [%s], #%lld\n" : "%s %s, [%s, #%lld]!\n", isLD ? "ldr" : "str", nameQRegLO(tt, ty), nameIReg64orSP(nn), (Long)simm9); |
|
From: Julian S. <se...@so...> - 2018-07-14 13:49:15
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=2a459a7d07c9025010bb64e82cec72dded7c3314 commit 2a459a7d07c9025010bb64e82cec72dded7c3314 Author: Julian Seward <js...@ac...> Date: Sat Jul 14 15:47:32 2018 +0200 arm64 front end: add spec rules for {EQ,NE} after {LOGIC32,LOGIC64}. Diff: --- VEX/priv/guest_arm64_helpers.c | 38 ++++++++++++++++++++++++++++++-------- 1 file changed, 30 insertions(+), 8 deletions(-) diff --git a/VEX/priv/guest_arm64_helpers.c b/VEX/priv/guest_arm64_helpers.c index 10065d5..5d0c3c2 100644 --- a/VEX/priv/guest_arm64_helpers.c +++ b/VEX/priv/guest_arm64_helpers.c @@ -1317,6 +1317,7 @@ IRExpr* guest_arm64_spechelper ( const HChar* function_name, # define unop(_op,_a1) IRExpr_Unop((_op),(_a1)) # define binop(_op,_a1,_a2) IRExpr_Binop((_op),(_a1),(_a2)) # define mkU64(_n) IRExpr_Const(IRConst_U64(_n)) +# define mkU32(_n) IRExpr_Const(IRConst_U32(_n)) # define mkU8(_n) IRExpr_Const(IRConst_U8(_n)) Int i, arity = 0; @@ -1507,14 +1508,35 @@ IRExpr* guest_arm64_spechelper ( const HChar* function_name, //ZZ unop(Iop_1Uto32, binop(Iop_CmpLT32U, cc_dep2, cc_dep1)) //ZZ ); //ZZ } -//ZZ -//ZZ /*---------------- LOGIC ----------------*/ -//ZZ -//ZZ if (isU32(cond_n_op, (ARMCondEQ << 4) | ARMG_CC_OP_LOGIC)) { -//ZZ /* EQ after LOGIC --> test res == 0 */ -//ZZ return unop(Iop_1Uto32, -//ZZ binop(Iop_CmpEQ32, cc_dep1, mkU32(0))); -//ZZ } + + /*---------------- LOGIC32 ----------------*/ + + if (isU64(cond_n_op, (ARM64CondEQ << 4) | ARM64G_CC_OP_LOGIC32)) { + /* EQ after LOGIC32 --> test res[31:0] == 0 */ + return unop(Iop_1Uto64, + binop(Iop_CmpEQ32, + unop(Iop_64to32, cc_dep1), mkU32(0))); + } + if (isU64(cond_n_op, (ARM64CondNE << 4) | ARM64G_CC_OP_LOGIC32)) { + /* NE after LOGIC32 --> test res[31:0] != 0 */ + return unop(Iop_1Uto64, + binop(Iop_CmpNE32, + unop(Iop_64to32, cc_dep1), mkU32(0))); + } + + /*---------------- LOGIC64 ----------------*/ + + if (isU64(cond_n_op, (ARM64CondEQ << 4) | ARM64G_CC_OP_LOGIC64)) { + /* EQ after LOGIC64 --> test res[63:0] == 0 */ + return unop(Iop_1Uto64, + binop(Iop_CmpEQ64, cc_dep1, mkU64(0))); + } + if (isU64(cond_n_op, (ARM64CondNE << 4) | ARM64G_CC_OP_LOGIC64)) { + /* NE after LOGIC64 --> test res[63:0] != 0 */ + return unop(Iop_1Uto64, + binop(Iop_CmpNE64, cc_dep1, mkU64(0))); + } + //ZZ if (isU32(cond_n_op, (ARMCondNE << 4) | ARMG_CC_OP_LOGIC)) { //ZZ /* NE after LOGIC --> test res != 0 */ //ZZ return unop(Iop_1Uto32, |
|
From: Julian S. <se...@so...> - 2018-07-14 13:41:15
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=5b7b6662f240c455c5c3e109cd5aaad936731987 commit 5b7b6662f240c455c5c3e109cd5aaad936731987 Author: Julian Seward <js...@ac...> Date: Sat Jul 14 15:39:59 2018 +0200 Add some initialisations that seemed to be required as a result of an LTO build with a gcc 8 prerelease. Diff: --- coregrind/m_coredump/coredump-elf.c | 3 +++ coregrind/m_redir.c | 4 +++- drd/drd_error.c | 3 +++ 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/coregrind/m_coredump/coredump-elf.c b/coregrind/m_coredump/coredump-elf.c index 98cf921..647338a 100644 --- a/coregrind/m_coredump/coredump-elf.c +++ b/coregrind/m_coredump/coredump-elf.c @@ -542,9 +542,12 @@ void dump_one_thread(struct note **notelist, const vki_siginfo_t *si, ThreadId t { vki_elf_fpregset_t fpu; struct vki_elf_prstatus prstatus; + VG_(memset)(&fpu, 0, sizeof(fpu)); + VG_(memset)(&prstatus, 0, sizeof(prstatus)); # if defined(VGP_x86_linux) && !defined(VGPV_x86_linux_android) { vki_elf_fpxregset_t xfpu; + VG_(memset)(&xfpu, 0, sizeof(xfpu)); fill_xfpu(&VG_(threads)[tid], &xfpu); add_note(notelist, "LINUX", NT_PRXFPREG, &xfpu, sizeof(xfpu)); } diff --git a/coregrind/m_redir.c b/coregrind/m_redir.c index 57a97a4..660e696 100644 --- a/coregrind/m_redir.c +++ b/coregrind/m_redir.c @@ -1185,8 +1185,10 @@ void VG_(redir_notify_delete_DebugInfo)( const DebugInfo* delsi ) Addr VG_(redir_do_lookup) ( Addr orig, Bool* isWrap ) { Active* r = VG_(OSetGen_Lookup)(activeSet, &orig); - if (r == NULL) + if (r == NULL) { + if (isWrap) *isWrap = False; return orig; + } vg_assert(r->to_addr != 0); if (isWrap) diff --git a/drd/drd_error.c b/drd/drd_error.c index b9e62f1..622b344 100644 --- a/drd/drd_error.c +++ b/drd/drd_error.c @@ -159,7 +159,10 @@ void drd_report_data_race(const Error* const err, const HChar* const auxwhat_prefix = xml ? " <auxwhat>" : ""; const HChar* const auxwhat_suffix = xml ? "</auxwhat>" : ""; const HChar* const indent = xml ? " " : ""; + AddrInfo ai; + VG_(memset)(&ai, 0, sizeof(ai)); + ai.akind = eUnknown; // A safe initial value (?) DiEpoch cur_ep = VG_(current_DiEpoch)(); XArray* /* of HChar */ descr1 |