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Generate IMAGE_REL_AMD64_ADDR32NB relocations for SEH

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data structures.

The Win64 EH data structures must be of type IMAGE_REL_AMD64_ADDR32NB
instead of IMAGE_REL_AMD64_ADDR32. This is easiely achieved by adding
the VK_COFF_IMGREL32 modifier to the symbol reference.
Change also references to start and end of the SEH range of a function
as offsets to start of the function.

Reviewed by Charles Davis and Nico Rieck.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185759 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kai Nacke
2013-07-06 17:16:12 +00:00
parent ea434e4bca
commit eececbc7d3
3 changed files with 53 additions and 16 deletions
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20
test/tools/llvm-objdump/win64-unwind-data.s
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@@ -3,8 +3,8 @@
// CHECK: Unwind info:
// CHECK: Function Table:
// CHECK-NEXT: Start Address: .text
// CHECK-NEXT: End Address: .text + 0x001b
// CHECK-NEXT: Start Address: func
// CHECK-NEXT: End Address: func + 0x001b
// CHECK-NEXT: Unwind Info Address: .xdata
// CHECK-NEXT: Version: 1
// CHECK-NEXT: Flags: 1 UNW_ExceptionHandler
@@ -20,8 +20,8 @@
// CHECK-NEXT: 0x04: UOP_AllocSmall 24
// CHECK-NEXT: 0x00: UOP_PushMachFrame w/o error code
// CHECK: Function Table:
// CHECK-NEXT: Start Address: .text + 0x0012
// CHECK-NEXT: End Address: .text + 0x0012
// CHECK-NEXT: Start Address: func + 0x0012
// CHECK-NEXT: End Address: func + 0x0012
// CHECK-NEXT: Unwind Info Address: .xdata + 0x001c
// CHECK-NEXT: Version: 1
// CHECK-NEXT: Flags: 4 UNW_ChainInfo
@@ -29,8 +29,8 @@
// CHECK-NEXT: Number of Codes: 0
// CHECK-NEXT: No frame pointer used
// CHECK: Function Table:
// CHECK-NEXT: Start Address: .text + 0x001b
// CHECK-NEXT: End Address: .text + 0x001c
// CHECK-NEXT: Start Address: smallFunc
// CHECK-NEXT: End Address: smallFunc + 0x0001
// CHECK-NEXT: Unwind Info Address: .xdata + 0x002c
// CHECK-NEXT: Version: 1
// CHECK-NEXT: Flags: 0
@@ -38,8 +38,8 @@
// CHECK-NEXT: Number of Codes: 0
// CHECK-NEXT: No frame pointer used
// CHECK: Function Table:
// CHECK-NEXT: Start Address: .text + 0x001c
// CHECK-NEXT: End Address: .text + 0x0039
// CHECK-NEXT: Start Address: allocFunc
// CHECK-NEXT: End Address: allocFunc + 0x001d
// CHECK-NEXT: Unwind Info Address: .xdata + 0x0034
// CHECK-NEXT: Version: 1
// CHECK-NEXT: Flags: 0
@@ -90,9 +90,9 @@ smallFunc:
.seh_endproc
// Function with big stack allocation.
.globl smallFunc
.globl allocFunc
.def allocFunc; .scl 2; .type 32; .endef
.seh_proc smallFunc
.seh_proc allocFunc
allocFunc:
.seh_pushframe @code
subq $65520, %rsp