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From: Julian S. <se...@so...> - 2018-05-05 08:09:13
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=e5dea048c1cd9fb8cd85175074388da3430b09f3 commit e5dea048c1cd9fb8cd85175074388da3430b09f3 Author: Julian Seward <js...@ac...> Date: Sat May 5 10:03:26 2018 +0200 emit_ARM64Instr: fix assertion failures associated with chaining patching (ARM64in_XDirect). n-i-bz. This has happened because (I think!) this has never before been tested with guest code addresses >= 2^48. This in turn means that this is the first time that p = imm64_to_ireg(p, /*x*/9, i->ARM64in.XDirect.dstGA); has been called upon to emit a constant which is non-zero in all four 16-bit chunks, so it generates 4 instructions rather than (at most, in all previous runs) 3, and so the "how many insns at max" assertions failed. This commit fixes the assertions. Diff: --- VEX/priv/host_arm64_defs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/VEX/priv/host_arm64_defs.c b/VEX/priv/host_arm64_defs.c index 4d088c7..a1328ff 100644 --- a/VEX/priv/host_arm64_defs.c +++ b/VEX/priv/host_arm64_defs.c @@ -3572,7 +3572,7 @@ Int emit_ARM64Instr ( /*MB_MOD*/Bool* is_profInc, /* Fix up the conditional jump, if there was one. */ if (i->ARM64in.XDirect.cond != ARM64cc_AL) { Int delta = (UChar*)p - (UChar*)ptmp; /* must be signed */ - vassert(delta > 0 && delta < 40); + vassert(delta > 0 && delta <= 40); vassert((delta & 3) == 0); UInt notCond = 1 ^ (UInt)i->ARM64in.XDirect.cond; vassert(notCond <= 13); /* Neither AL nor NV */ @@ -5481,7 +5481,7 @@ Int emit_ARM64Instr ( /*MB_MOD*/Bool* is_profInc, /*NOTREACHED*/ done: - vassert(((UChar*)p) - &buf[0] <= 36); + vassert(((UChar*)p) - &buf[0] <= 40); return ((UChar*)p) - &buf[0]; } |
|
From: Julian S. <se...@so...> - 2018-05-05 08:02:03
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=fe28f100d7d01953eca21d27824843fad4e9ff24 commit fe28f100d7d01953eca21d27824843fad4e9ff24 Author: Julian Seward <js...@ac...> Date: Sat May 5 10:00:46 2018 +0200 Add extra __ubsan failure functions needed to un-break ubsanified builds with gcc 8. Diff: --- coregrind/m_compiler.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/coregrind/m_compiler.c b/coregrind/m_compiler.c index 8d0dc67..bf114ad 100644 --- a/coregrind/m_compiler.c +++ b/coregrind/m_compiler.c @@ -232,6 +232,13 @@ void __ubsan_handle_type_mismatch ( void ) vg_assert(0); } +void __ubsan_handle_type_mismatch_v1 ( void ); +void __ubsan_handle_type_mismatch_v1 ( void ) +{ + VG_(debugLog)(0, "main:ubsan", "In %s", __func__); + vg_assert(0); +} + void __ubsan_handle_mul_overflow ( void ); void __ubsan_handle_mul_overflow ( void ) { @@ -267,6 +274,13 @@ void __ubsan_handle_negate_overflow ( void ) vg_assert(0); } +void __ubsan_handle_pointer_overflow ( void ); +void __ubsan_handle_pointer_overflow ( void ) +{ + VG_(debugLog)(0, "main:ubsan", "In %s", __func__); + vg_assert(0); +} + void __ubsan_handle_out_of_bounds ( void ); void __ubsan_handle_out_of_bounds ( void ) { @@ -295,6 +309,13 @@ void __ubsan_handle_nonnull_arg ( void ) vg_assert(0); } +void __ubsan_handle_invalid_builtin ( void ); +void __ubsan_handle_invalid_builtin ( void ) +{ + VG_(debugLog)(0, "main:ubsan", "In %s", __func__); + vg_assert(0); +} + /*--------------------------------------------------------------------*/ /*--- end ---*/ /*--------------------------------------------------------------------*/ |
|
From: Julian S. <se...@so...> - 2018-05-05 07:50:25
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=98deefdfea5f5dc3ec2b6b54f7e5b27ca0a60bb2 commit 98deefdfea5f5dc3ec2b6b54f7e5b27ca0a60bb2 Author: Julian Seward <js...@ac...> Date: Sat May 5 09:49:02 2018 +0200 Comment out test "(INSNA(6,6) == 0 || INSNA(6,6) == 1)" that gcc 8 complains (correctly) is always true. No functional change. Diff: --- VEX/priv/guest_arm_toIR.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/VEX/priv/guest_arm_toIR.c b/VEX/priv/guest_arm_toIR.c index 26c5174..d858c85 100644 --- a/VEX/priv/guest_arm_toIR.c +++ b/VEX/priv/guest_arm_toIR.c @@ -9145,8 +9145,11 @@ static Bool decode_V6MEDIA_instruction ( } } else { if (INSNA(27,20) == BITS8(0,1,1,0,1,0,0,0) && - INSNA(5,4) == BITS2(0,1) && - (INSNA(6,6) == 0 || INSNA(6,6) == 1) ) { + INSNA(5,4) == BITS2(0,1) /* && + (INSNA(6,6) == 0 || INSNA(6,6) == 1) + This last bit with INSNA(6,6) is correct, but gcc 8 complains + (correctly) that it is always true. So I commented it out + to keep gcc quiet. */ ) { regD = INSNA(15,12); regN = INSNA(19,16); regM = INSNA(3,0); |