kc3-lang/libffi/src/ia64
Branch :
Log
| Author | Commit | Date | CI | Message |
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b58caef7 | 2018-02-17 19:00:40 | ia64: fix small struct return This change fixes libffi.call/struct10.c failure on ia64: FAIL: libffi.call/struct10.c -W -Wall -Wno-psabi -O0 execution test .Lst_small_struct handles returns for structs less than 32 bytes (following ia64 return value ABI [1]). Subroutine does roughly the following: ``` mov [sp+0] = r8 mov [sp+8] = r9 mov [sp+16] = r10 mov [sp+24] = r11 memcpy(destination, source=sp, 12); ``` The problem: ia64 ABI guarantees that top 16 bytes of stack are scratch space for callee function. Thus it can clobber it. [1] says (7.1 Procedure Frames): """ * Scratch area. This 16-byte region is provided as scratch storage for procedures that are called by the current procedure. Leaf procedures do not need to allocate this region. A procedure may use the 16 bytes at the top of its own frame as scratch memory, but the contents of this area are not preserved by a procedure call. """ In our case 16 top bytes are clobbered by a PLT resolver when memcpy() is called for the first time. As a result memcpy implementation reads already clobbered data frop top of stack. The fix is simple: allocate 16 bytes of scrats space prior to memcpy() call. [1]: https://www.intel.com/content/dam/www/public/us/en/documents/guides/itanium-software-runtime-architecture-guide.pdf Bug: https://bugs.gentoo.org/634190 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> | |
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ed7488c0 | 2017-10-17 13:00:51 | src/ia64/unix.S: unbreak small struct handling commit 6e8a4460833594d5af1b4539178025da0077df19 added FFI_TYPE_COMPLEX value type (comes after FFI_TYPE_POINTER) ia64 ffi_closure_unix reiles on the ordering of FFI_ enums as ia64 has ia64-specific FFI types: small struct and FPU extesions. As a result all tests handling small structs broke. The change fixes dispatch table by adding (no-op) FFI_TYPE_COMPLEX entry This has positive effect of unbreaking most tests on ia64: === libffi Summary === -# of expected passes 1595 -# of unexpected failures 295 +# of expected passes 1930 +# of unexpected failures 10 # of unsupported tests 30 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> | |
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128cd1d2 | 2013-10-08 06:45:51 | Fix spelling errors | |
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8360bf1c | 2012-02-23 07:01:13 | Ensure that users don't include ffitarget.h directly | |
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c365ee75 | 2012-01-23 11:13:18 | Refresh | |
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1fbf9dc4 | 2011-02-13 08:06:39 | Fix bad_abi test. rc5. | |
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2db72615 | 2010-11-21 10:50:56 | Rebase | |
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d14178be | 2010-07-23 09:14:00 | FFI_LAST_ABI fix | |
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3f5b1375 | 2010-07-12 14:39:18 | rebase | |
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63097415 | 2010-05-05 20:14:56 | Micharl Kohler's spelling fixes | |
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9dc9a293 | 2010-04-13 10:33:52 | Rebase to latest GCC sources | |
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7b7a42f2 | 2010-01-12 09:14:14 | Rebase from GCC | |
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c3042afa | 2010-01-01 08:08:02 | Reset quilt patches post 3.0.9 merge with GCC | |
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0cfe60e9 | 2009-12-29 10:06:04 | 3.0.9rc12 | |
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9458d88f | 2009-12-26 07:02:27 | Rebase from GCC | |
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da11bece | 2009-12-24 05:34:46 | Release 3.0.9rc5 | |
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115ab36f | 2009-12-24 00:22:00 | Update missing changes for 3.0.9r4. | |
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c6dddbd0 | 2009-10-04 08:11:33 | Initial commit |