2018-01-04 16:06:34 +08:00
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# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=i686-windows-msvc %s -o %t.obj
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[COFF] Implement /safeseh:no and check @feat.00 flags by default
Summary:
Fixes PR41828. Before this, LLD always emitted SafeSEH chunks and
defined __safe_se_handler_table & size. Now, /safeseh:no leaves those
undefined.
Additionally, we were checking for the safeseh @feat.00 flag in two
places: once to emit errors, and once during safeseh table construction.
The error was set up to be off by default, but safeseh is supposed to be
on by default. I combined the two checks, so now LLD emits an error if
an input object lacks @feat.00 and safeseh is enabled. This caused the
majority of 32-bit LLD tests to fail, since many test input object files
lack @feat.00 symbols. I explicitly added -safeseh:no to those tests to
preserve behavior.
Finally, LLD no longer sets IMAGE_DLL_CHARACTERISTICS_NO_SEH if any
input file wasn't compiled for safeseh.
Reviewers: mstorsjo, ruiu, thakis
Reviewed By: ruiu, thakis
Subscribers: llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D63570
llvm-svn: 366238
2019-07-17 02:17:33 +08:00
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# RUN: lld-link -safeseh:no -entry:dllmain -dll %t.obj -out:%t.dll -implib:%t.lib
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2018-01-04 16:06:34 +08:00
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# RUN: llvm-readobj %t.lib | FileCheck -check-prefix DECORATED-IMPLIB %s
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2019-05-01 13:49:01 +08:00
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# RUN: llvm-readobj --coff-exports %t.dll | FileCheck -check-prefix DECORATED-EXPORTS %s
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2018-01-04 16:06:34 +08:00
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# DECORATED-IMPLIB: Name type: name
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# DECORATED-IMPLIB-NEXT: __imp_@fastcall@8
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# DECORATED-IMPLIB-NEXT: @fastcall@8
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2018-01-20 19:44:42 +08:00
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# DECORATED-IMPLIB: Name type: name
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# DECORATED-IMPLIB-NEXT: __imp__stdcall@8
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# DECORATED-IMPLIB-NEXT: _stdcall@8
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2018-01-04 16:06:34 +08:00
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# DECORATED-IMPLIB: Name type: noprefix
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# DECORATED-IMPLIB-NEXT: __imp___underscored
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# DECORATED-IMPLIB-NEXT: __underscored
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# DECORATED-IMPLIB: Name type: name
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# DECORATED-IMPLIB-NEXT: __imp_vectorcall@@8
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# DECORATED-IMPLIB-NEXT: vectorcall@@8
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# DECORATED-EXPORTS: Name: @fastcall@8
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2018-01-20 19:44:42 +08:00
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# DECORATED-EXPORTS: Name: _stdcall@8
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2018-01-04 16:06:34 +08:00
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# DECORATED-EXPORTS: Name: _underscored
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# DECORATED-EXPORTS: Name: vectorcall@@8
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.def _stdcall@8;
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.scl 2;
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.type 32;
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.endef
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.globl _stdcall@8
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.globl @fastcall@8
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.globl vectorcall@@8
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.globl __underscored
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_stdcall@8:
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movl 8(%esp), %eax
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addl 4(%esp), %eax
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retl $8
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@fastcall@8:
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movl 8(%esp), %eax
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addl 4(%esp), %eax
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retl $8
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vectorcall@@8:
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movl 8(%esp), %eax
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addl 4(%esp), %eax
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retl $8
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__underscored:
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ret
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.def _dllmain;
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.scl 2;
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.type 32;
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.endef
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.globl _dllmain
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_dllmain:
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retl
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.section .drectve
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.ascii "-export:__underscored -export:_stdcall@8 -export:@fastcall@8 -export:vectorcall@@8"
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