forked from OSchip/llvm-project
[ELF] Add -z separate-code and pad the last page of last PF_X PT_LOAD with traps only if -z separate-code is specified
This patch
1) adds -z separate-code and -z noseparate-code (default).
2) changes the condition that the last page of last PF_X PT_LOAD is
padded with trap instructions.
Current condition (after D33630): if there is no `SECTIONS` commands.
After this change: if -z separate-code is specified.
-z separate-code was introduced to ld.bfd in 2018, to place the text
segment in its own pages. There is no overlap in pages between an
executable segment and a non-executable segment:
1) RX cannot load initial contents from R or RW(or non-SHF_ALLOC).
2) R and RW(or non-SHF_ALLOC) cannot load initial contents from RX.
lld's current status:
- Between R and RX: in `Writer<ELFT>::fixSectionAlignments()`, the start of a
segment is always aligned to maxPageSize, so the initial contents loaded by R
and RX do not overlap. I plan to allow overlaps in D64906 if -z noseparate-code
is in effect.
- Between RX and RW(or non-SHF_ALLOC if RW doesn't exist):
we currently unconditionally pad the last page to commonPageSize
(defaults to 4096 on all targets we support).
This patch will make it effective only if -z separate-code is specified.
-z separate-code is a dubious feature that intends to reduce the number
of ROP gadgets (which is actually ineffective because attackers can find
plenty of gadgets in the text segment, no need to find gadgets in
non-code regions).
With the overlapping PT_LOAD technique D64906, -z noseparate-code
removes two more alignments at segment boundaries than -z separate-code.
This saves at most defaultCommonPageSize*2 bytes, which are significant
on targets with large defaultCommonPageSize (AArch64/MIPS/PPC: 65536).
Issues/feedback on alignment at segment boundaries to help understand
the implication:
* binutils PR24490 (the situation on ld.bfd is worse because they have
two R-- on both sides of R-E so more alignments.)
* In binutils, the 2018-02-27 commit "ld: Add --enable-separate-code" made -z separate-code the default on Linux.
d969dea983
In musl-cross-make, binutils is configured with --disable-separate-code
to address size regressions caused by -z separate-code. (lld actually has the same
issue, which I plan to fix in a future patch. The ld.bfd x86 status is
worse because they default to max-page-size=0x200000).
* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237676 people want
smaller code size. This patch will remove one alignment boundary.
* Stef O'Rear: I'm opposed to any kind of page alignment at the
text/rodata line (having a partial page of text aliased as rodata and
vice versa has no demonstrable harm, and I actually care about small
systems).
So, make -z noseparate-code the default.
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D64903
llvm-svn: 367537
This commit is contained in:
Fangrui Song
parent
07ceadda25
commit
5391f158c2
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@ -210,6 +210,7 @@ struct Configuration {
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bool zOrigin;
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bool zRelro;
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bool zRodynamic;
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bool zSeparateCode;
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bool zText;
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bool zRetpolineplt;
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bool zWxneeded;
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@ -378,9 +378,10 @@ static bool isKnownZFlag(StringRef s) {
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s == "execstack" || s == "global" || s == "hazardplt" ||
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s == "ifunc-noplt" || s == "initfirst" || s == "interpose" ||
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s == "keep-text-section-prefix" || s == "lazy" || s == "muldefs" ||
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s == "nocombreloc" || s == "nocopyreloc" || s == "nodefaultlib" ||
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s == "nodelete" || s == "nodlopen" || s == "noexecstack" ||
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s == "nokeep-text-section-prefix" || s == "norelro" || s == "notext" ||
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s == "separate-code" || s == "nocombreloc" || s == "nocopyreloc" ||
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s == "nodefaultlib" || s == "nodelete" || s == "nodlopen" ||
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s == "noexecstack" || s == "nokeep-text-section-prefix" ||
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s == "norelro" || s == "noseparate-code" || s == "notext" ||
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s == "now" || s == "origin" || s == "relro" || s == "retpolineplt" ||
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s == "rodynamic" || s == "text" || s == "wxneeded" ||
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s.startswith("common-page-size") || s.startswith("max-page-size=") ||
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@ -935,6 +936,7 @@ static void readConfigs(opt::InputArgList &args) {
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config->zRelro = getZFlag(args, "relro", "norelro", true);
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config->zRetpolineplt = hasZOption(args, "retpolineplt");
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config->zRodynamic = hasZOption(args, "rodynamic");
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config->zSeparateCode = getZFlag(args, "separate-code", "noseparate-code", false);
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config->zStackSize = args::getZOptionValue(args, OPT_z, "stack-size", 0);
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config->zText = getZFlag(args, "text", "notext", true);
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config->zWxneeded = hasZOption(args, "wxneeded");
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@ -2289,13 +2289,11 @@ template <class ELFT> void Writer<ELFT>::assignFileOffsets() {
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for (OutputSection *sec : outputSections) {
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off = setFileOffset(sec, off);
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if (script->hasSectionsCommand)
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continue;
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// If this is a last section of the last executable segment and that
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// segment is the last loadable segment, align the offset of the
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// following section to avoid loading non-segments parts of the file.
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if (lastRX && lastRX->lastSec == sec)
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if (config->zSeparateCode && lastRX && lastRX->lastSec == sec)
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off = alignTo(off, config->commonPageSize);
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}
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@ -2568,7 +2566,7 @@ static void fillTrap(uint8_t *i, uint8_t *end) {
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// We'll leave other pages in segments as-is because the rest will be
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// overwritten by output sections.
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template <class ELFT> void Writer<ELFT>::writeTrapInstr() {
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if (script->hasSectionsCommand)
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if (!config->zSeparateCode)
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return;
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for (Partition &part : partitions) {
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@ -42,8 +42,8 @@ _start:
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// CHECK-NEXT: Offset: 0x1000
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// CHECK-NEXT: VirtualAddress: 0x201000
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// CHECK-NEXT: PhysicalAddress: 0x201000
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// CHECK-NEXT: FileSize: 4096
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// CHECK-NEXT: MemSize: 4096
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// CHECK-NEXT: FileSize: 1
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// CHECK-NEXT: MemSize: 1
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// CHECK-NEXT: Flags [ (0x5)
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// CHECK-NEXT: PF_R (0x4)
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// CHECK-NEXT: PF_X (0x1)
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@ -52,7 +52,7 @@ _start:
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// CHECK-NEXT: }
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// CHECK-NEXT: ProgramHeader {
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// CHECK-NEXT: Type: PT_TLS (0x7)
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// CHECK-NEXT: Offset: 0x2000
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// CHECK-NEXT: Offset: 0x1001
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// CHECK-NEXT: VirtualAddress: 0x201001
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// CHECK-NEXT: PhysicalAddress: 0x201001
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// CHECK-NEXT: FileSize: 0
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@ -26,7 +26,7 @@ _start:
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# CHECK-NEXT: Version: 1
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# CHECK-NEXT: Entry: [[ENTRY:0x[0-9A-F]+]]
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# CHECK-NEXT: ProgramHeaderOffset: 0x40
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# CHECK-NEXT: SectionHeaderOffset: 0x11088
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# CHECK-NEXT: SectionHeaderOffset: 0x10098
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: HeaderSize: 64
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@ -76,7 +76,7 @@ _start:
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# CHECK-NEXT: SHF_STRINGS (0x20)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x11000
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# CHECK-NEXT: Offset: 0x1000C
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# CHECK-NEXT: Size: 8
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -90,7 +90,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x11008
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# CHECK-NEXT: Offset: 0x10018
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# CHECK-NEXT: Size: 72
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# CHECK-NEXT: Link: 5
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# CHECK-NEXT: Info: 2
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@ -104,7 +104,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x11050
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# CHECK-NEXT: Offset: 0x10060
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# CHECK-NEXT: Size: 42
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -118,7 +118,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x1107A
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# CHECK-NEXT: Offset: 0x1008A
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# CHECK-NEXT: Size: 13
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -185,8 +185,8 @@ _start:
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# CHECK-NEXT: Offset: 0x1000
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# CHECK-NEXT: VirtualAddress: 0x210000
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# CHECK-NEXT: PhysicalAddress: 0x210000
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# CHECK-NEXT: FileSize: 4096
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# CHECK-NEXT: MemSize: 4096
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# CHECK-NEXT: FileSize: 12
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# CHECK-NEXT: MemSize: 12
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# CHECK-NEXT: Flags [ (0x5)
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# CHECK-NEXT: PF_R (0x4)
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# CHECK-NEXT: PF_X (0x1)
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@ -25,7 +25,7 @@ _start:
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# CHECK-NEXT: Version: 1
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# CHECK-NEXT: Entry: 0x401000
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# CHECK-NEXT: ProgramHeaderOffset: 0x34
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# CHECK-NEXT: SectionHeaderOffset: 0x205C
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# CHECK-NEXT: SectionHeaderOffset: 0x1068
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: HeaderSize: 52
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@ -75,7 +75,7 @@ _start:
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# CHECK-NEXT: SHF_STRINGS (0x20)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x2000
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# CHECK-NEXT: Offset: 0x100C
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# CHECK-NEXT: Size: 8
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -89,7 +89,7 @@ _start:
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# CHECK-NEXT: Flags [
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x2008
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# CHECK-NEXT: Offset: 0x1014
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# CHECK-NEXT: Size: 32
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# CHECK-NEXT: Link: 5
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# CHECK-NEXT: Info: 1
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@ -103,7 +103,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x2028
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# CHECK-NEXT: Offset: 0x1034
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# CHECK-NEXT: Size: 42
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -117,7 +117,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x2052
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# CHECK-NEXT: Offset: 0x105E
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# CHECK-NEXT: Size: 8
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -155,8 +155,8 @@ _start:
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# CHECK-NEXT: Offset: 0x1000
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# CHECK-NEXT: VirtualAddress: 0x401000
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# CHECK-NEXT: PhysicalAddress: 0x401000
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# CHECK-NEXT: FileSize: 4096
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# CHECK-NEXT: MemSize: 4096
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# CHECK-NEXT: FileSize: 12
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# CHECK-NEXT: MemSize: 12
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# CHECK-NEXT: Flags [ (0x5)
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# CHECK-NEXT: PF_R (0x4)
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# CHECK-NEXT: PF_X (0x1)
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@ -28,7 +28,7 @@
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// CHECK-NEXT: Version: 1
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// CHECK-NEXT: Entry: 0x10010000
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// CHECK-NEXT: ProgramHeaderOffset: 0x34
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// CHECK-NEXT: SectionHeaderOffset: 0x11044
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// CHECK-NEXT: SectionHeaderOffset: 0x10050
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// CHECK-NEXT: Flags [ (0x0)
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// CHECK-NEXT: ]
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// CHECK-NEXT: HeaderSize: 52
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@ -83,7 +83,7 @@
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// CHECK-NEXT: SHF_STRINGS (0x20)
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address: 0x0
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// CHECK-NEXT: Offset: 0x11000
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// CHECK-NEXT: Offset: 0x1000C
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// CHECK-NEXT: Size: 8
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// CHECK-NEXT: Link: 0
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// CHECK-NEXT: Info: 0
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@ -97,7 +97,7 @@
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// CHECK-NEXT: Flags [ (0x0)
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address: 0x0
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// CHECK-NEXT: Offset: 0x11008
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// CHECK-NEXT: Offset: 0x10014
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// CHECK-NEXT: Size: 16
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// CHECK-NEXT: Link: 5
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// CHECK-NEXT: Info: 1
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@ -114,7 +114,7 @@
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// CHECK-NEXT: Flags [ (0x0)
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address: 0x0
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// CHECK-NEXT: Offset: 0x11018
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// CHECK-NEXT: Offset: 0x10024
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// CHECK-NEXT: Size: 42
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// CHECK-NEXT: Link: 0
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// CHECK-NEXT: Info: 0
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@ -128,7 +128,7 @@
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// CHECK-NEXT: Flags [ (0x0)
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// CHECK-NEXT: ]
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// CHECK-NEXT: Address: 0x0
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// CHECK-NEXT: Offset: 0x11042
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// CHECK-NEXT: Offset: 0x1004E
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// CHECK-NEXT: Size: 1
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// CHECK-NEXT: Link: 0
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// CHECK-NEXT: Info: 0
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@ -169,8 +169,8 @@
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// CHECK-NEXT: Offset: 0x1000
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// CHECK-NEXT: VirtualAddress: 0x10010000
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// CHECK-NEXT: PhysicalAddress: 0x10010000
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// CHECK-NEXT: FileSize: 4096
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// CHECK-NEXT: MemSize: 4096
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// CHECK-NEXT: FileSize: 12
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// CHECK-NEXT: MemSize: 12
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// CHECK-NEXT: Flags [ (0x5)
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// CHECK-NEXT: PF_R (0x4)
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// CHECK-NEXT: PF_X (0x1)
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@ -26,7 +26,7 @@ _start:
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# CHECK-NEXT: Version: 1
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# CHECK-NEXT: Entry: [[ENTRY:0x[0-9A-F]+]]
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# CHECK-NEXT: ProgramHeaderOffset: 0x40
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# CHECK-NEXT: SectionHeaderOffset: 0x102070
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# CHECK-NEXT: SectionHeaderOffset: 0x100080
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: HeaderSize: 64
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@ -76,7 +76,7 @@ _start:
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# CHECK-NEXT: SHF_STRINGS (0x20)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x102000
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# CHECK-NEXT: Offset: 0x10000C
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# CHECK-NEXT: Size: 8
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -90,7 +90,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x102008
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# CHECK-NEXT: Offset: 0x100018
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# CHECK-NEXT: Size: 48
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# CHECK-NEXT: Link: 5
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# CHECK-NEXT: Info: 1
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@ -104,7 +104,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x102038
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# CHECK-NEXT: Offset: 0x100048
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# CHECK-NEXT: Size: 42
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -118,7 +118,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x102062
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# CHECK-NEXT: Offset: 0x100072
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# CHECK-NEXT: Size: 8
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -176,8 +176,8 @@ _start:
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# CHECK-NEXT: Offset: 0x100000
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# CHECK-NEXT: VirtualAddress: 0x200000
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# CHECK-NEXT: PhysicalAddress: 0x200000
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# CHECK-NEXT: FileSize: 8192
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# CHECK-NEXT: MemSize: 8192
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# CHECK-NEXT: FileSize: 12
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# CHECK-NEXT: MemSize: 12
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# CHECK-NEXT: Flags [ (0x5)
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# CHECK-NEXT: PF_R (0x4)
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# CHECK-NEXT: PF_X (0x1)
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@ -28,7 +28,7 @@ _start:
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# CHECK-NEXT: Version: 1
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# CHECK-NEXT: Entry: [[ENTRY:0x[0-9A-F]+]]
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# CHECK-NEXT: ProgramHeaderOffset: 0x40
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# CHECK-NEXT: SectionHeaderOffset: 0x2070
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# CHECK-NEXT: SectionHeaderOffset: 0x1080
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: HeaderSize: 64
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@ -78,7 +78,7 @@ _start:
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# CHECK-NEXT: SHF_STRINGS (0x20)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x2000
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# CHECK-NEXT: Offset: 0x1010
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# CHECK-NEXT: Size: 8
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -92,7 +92,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x2008
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# CHECK-NEXT: Offset: 0x1018
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# CHECK-NEXT: Size: 48
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# CHECK-NEXT: Link: 5
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# CHECK-NEXT: Info: 1
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@ -106,7 +106,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x2038
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# CHECK-NEXT: Offset: 0x1048
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# CHECK-NEXT: Size: 42
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -120,7 +120,7 @@ _start:
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x2062
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# CHECK-NEXT: Offset: 0x1072
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# CHECK-NEXT: Size: 8
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# CHECK-NEXT: Link: 0
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# CHECK-NEXT: Info: 0
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@ -178,8 +178,8 @@ _start:
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# CHECK-NEXT: Offset: 0x1000
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# CHECK-NEXT: VirtualAddress: 0x201000
|
||||
# CHECK-NEXT: PhysicalAddress: 0x201000
|
||||
# CHECK-NEXT: FileSize: 4096
|
||||
# CHECK-NEXT: MemSize: 4096
|
||||
# CHECK-NEXT: FileSize: 16
|
||||
# CHECK-NEXT: MemSize: 16
|
||||
# CHECK-NEXT: Flags [ (0x5)
|
||||
# CHECK-NEXT: PF_R (0x4)
|
||||
# CHECK-NEXT: PF_X (0x1)
|
||||
|
|
|
|||
|
|
@ -65,15 +65,15 @@ _start:
|
|||
# DEFAULT: Contents of section .note.test:
|
||||
# DEFAULT: Contents of section .note.gnu.build-id:
|
||||
# DEFAULT-NEXT: 04000000 08000000 03000000 474e5500 ............GNU.
|
||||
# DEFAULT-NEXT: 95849665 2621c734
|
||||
# DEFAULT-NEXT: 605e19a6 30469e00
|
||||
|
||||
# MD5: Contents of section .note.gnu.build-id:
|
||||
# MD5-NEXT: 04000000 10000000 03000000 474e5500 ............GNU.
|
||||
# MD5-NEXT: 1882c01f 71698eed 229b3994 eb554c80
|
||||
# MD5-NEXT: adbf65c5 42b4a428 184fd7c9 099cdc29
|
||||
|
||||
# SHA1: Contents of section .note.gnu.build-id:
|
||||
# SHA1-NEXT: 04000000 14000000 03000000 474e5500 ............GNU.
|
||||
# SHA1-NEXT: 96820adf d90d5470 0a0c32ff a88c4017
|
||||
# SHA1-NEXT: fe148fd4 1add2878 6b298b61 5880148b
|
||||
|
||||
# UUID: Contents of section .note.gnu.build-id:
|
||||
# UUID-NEXT: 04000000 10000000 03000000 474e5500 ............GNU.
|
||||
|
|
|
|||
|
|
@ -54,7 +54,7 @@ _start:
|
|||
# CHECK-MAX-NEXT: SHF_STRINGS (0x20)
|
||||
# CHECK-MAX-NEXT: ]
|
||||
# CHECK-MAX-NEXT: Address: 0x0
|
||||
# CHECK-MAX-NEXT: Offset: 0x11000
|
||||
# CHECK-MAX-NEXT: Offset: 0x10001
|
||||
# CHECK-MAX-NEXT: Size: 8
|
||||
# CHECK-MAX-NEXT: Link: 0
|
||||
# CHECK-MAX-NEXT: Info: 0
|
||||
|
|
@ -91,8 +91,8 @@ _start:
|
|||
# CHECK-MAX-NEXT: Offset: 0x10000
|
||||
# CHECK-MAX-NEXT: VirtualAddress: 0x210000
|
||||
# CHECK-MAX-NEXT: PhysicalAddress: 0x210000
|
||||
# CHECK-MAX-NEXT: FileSize: 4096
|
||||
# CHECK-MAX-NEXT: MemSize: 4096
|
||||
# CHECK-MAX-NEXT: FileSize: 1
|
||||
# CHECK-MAX-NEXT: MemSize: 1
|
||||
# CHECK-MAX-NEXT: Flags [ (0x5)
|
||||
# CHECK-MAX-NEXT: PF_R (0x4)
|
||||
# CHECK-MAX-NEXT: PF_X (0x1)
|
||||
|
|
@ -164,7 +164,7 @@ _start:
|
|||
# CHECK-COMMON-NEXT: SHF_STRINGS (0x20)
|
||||
# CHECK-COMMON-NEXT: ]
|
||||
# CHECK-COMMON-NEXT: Address: 0x0
|
||||
# CHECK-COMMON-NEXT: Offset: 0x20000
|
||||
# CHECK-COMMON-NEXT: Offset: 0x10001
|
||||
# CHECK-COMMON-NEXT: Size: 8
|
||||
# CHECK-COMMON-NEXT: Link: 0
|
||||
# CHECK-COMMON-NEXT: Info: 0
|
||||
|
|
@ -201,8 +201,8 @@ _start:
|
|||
# CHECK-COMMON-NEXT: Offset: 0x10000
|
||||
# CHECK-COMMON-NEXT: VirtualAddress: 0x210000
|
||||
# CHECK-COMMON-NEXT: PhysicalAddress: 0x210000
|
||||
# CHECK-COMMON-NEXT: FileSize: 65536
|
||||
# CHECK-COMMON-NEXT: MemSize: 65536
|
||||
# CHECK-COMMON-NEXT: FileSize: 1
|
||||
# CHECK-COMMON-NEXT: MemSize: 1
|
||||
# CHECK-COMMON-NEXT: Flags [ (0x5)
|
||||
# CHECK-COMMON-NEXT: PF_R (0x4)
|
||||
# CHECK-COMMON-NEXT: PF_X (0x1)
|
||||
|
|
|
|||
|
|
@ -1,12 +1,12 @@
|
|||
# REQUIRES: ppc
|
||||
|
||||
# RUN: llvm-mc -filetype=obj -triple=powerpc64le-linux %s -o %t.o
|
||||
# RUN: ld.lld %t.o -o %t.ppc64le
|
||||
# RUN: ld.lld %t.o -z separate-code -o %t.ppc64le
|
||||
# RUN: llvm-readobj -l %t.ppc64le | FileCheck %s
|
||||
# RUN: od -Ax -t x1 -N16 -j0x10ff0 %t.ppc64le | FileCheck %s -check-prefix=LE
|
||||
|
||||
# RUN: llvm-mc -filetype=obj -triple=powerpc64-linux %s -o %t.o
|
||||
# RUN: ld.lld %t.o -o %t.ppc64
|
||||
# RUN: ld.lld %t.o -z separate-code -o %t.ppc64
|
||||
# RUN: llvm-readobj -l %t.ppc64 | FileCheck %s
|
||||
# RUN: od -Ax -t x1 -N16 -j0x10ff0 %t.ppc64 | FileCheck %s -check-prefix=BE
|
||||
|
||||
|
|
|
|||
|
|
@ -1,16 +1,27 @@
|
|||
# REQUIRES: x86
|
||||
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
|
||||
|
||||
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
|
||||
# RUN: ld.lld %t -o %t2
|
||||
# RUN: llvm-readobj -l %t2 | FileCheck %s
|
||||
# RUN: od -Ax -x -N16 -j0x1ff0 %t2 | FileCheck %s -check-prefix=FILL
|
||||
## -z noseparate-code is the default: text segment is not tail padded.
|
||||
# RUN: ld.lld %t.o -o %t
|
||||
# RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,NOPAD
|
||||
# RUN: ld.lld %t.o -z noseparate-code -o %t
|
||||
# RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,NOPAD
|
||||
|
||||
## -z separate-code pads the tail of text segment with traps.
|
||||
# RUN: ld.lld %t.o -z separate-code -o %t
|
||||
# RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,PAD
|
||||
# RUN: od -Ax -x -N16 -j0x1ff0 %t | FileCheck %s --check-prefix=FILL
|
||||
|
||||
# RUN: ld.lld %t.o -z separate-code -z noseparate-code -o %t
|
||||
# RUN: llvm-readobj -l %t | FileCheck %s --check-prefixes=CHECK,NOPAD
|
||||
|
||||
# CHECK: ProgramHeader {
|
||||
# CHECK: Type: PT_LOAD
|
||||
# CHECK: Offset: 0x1000
|
||||
# CHECK-NEXT: VirtualAddress:
|
||||
# CHECK-NEXT: PhysicalAddress:
|
||||
# CHECK-NEXT: FileSize: 4096
|
||||
# PAD-NEXT: FileSize: 4096
|
||||
# NOPAD-NEXT: FileSize: 1
|
||||
# CHECK-NEXT: MemSize:
|
||||
# CHECK-NEXT: Flags [
|
||||
# CHECK-NEXT: PF_R
|
||||
|
|
|
|||
|
|
@ -47,8 +47,8 @@ _start:
|
|||
# CHECK-NEXT: Offset: 0x1000
|
||||
# CHECK-NEXT: VirtualAddress: 0x1001000
|
||||
# CHECK-NEXT: PhysicalAddress: 0x1001000
|
||||
# CHECK-NEXT: FileSize: 4096
|
||||
# CHECK-NEXT: MemSize: 4096
|
||||
# CHECK-NEXT: FileSize: 1
|
||||
# CHECK-NEXT: MemSize: 1
|
||||
# CHECK-NEXT: Flags [ (0x5)
|
||||
# CHECK-NEXT: PF_R (0x4)
|
||||
# CHECK-NEXT: PF_X (0x1)
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
; REQUIRES: msp430
|
||||
; RUN: llvm-mc -filetype=obj -triple=msp430-elf -o %t1.o %s
|
||||
; RUN: echo -e '.global _start\n _start: nop' | llvm-mc -filetype=obj -triple=msp430-elf -o %t2.o -
|
||||
; RUN: ld.lld -o %t.exe --Tdata=0x2000 --Ttext=0x8000 --defsym=_byte=0x21 %t2.o %t1.o
|
||||
; RUN: ld.lld -o %t.exe --Tdata=0x2000 --Ttext=0x8000 --defsym=_byte=0x21 -z separate-code %t2.o %t1.o
|
||||
; RUN: llvm-objdump -s -d %t.exe | FileCheck %s
|
||||
|
||||
;; Check handling of basic msp430 relocation types.
|
||||
|
|
|
|||
|
|
@ -4,11 +4,11 @@
|
|||
|
||||
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/verneed1.s -o %t1.o
|
||||
// RUN: echo "v1 {}; v2 {}; v3 { local: *; };" > %t1.script
|
||||
// RUN: ld.lld -shared %t1.o --version-script %t1.script -o %t1.so -soname verneed1.so.0
|
||||
// RUN: ld.lld -shared %t1.o --version-script %t1.script -o %t1.so -soname verneed1.so.0 -z separate-code
|
||||
|
||||
// RUN: llvm-mc %s -o %t.o -filetype=obj --triple=x86_64-unknown-linux
|
||||
// RUN: echo "x1 { global: p0; }; x2 { global: p1; p1alias; };" > %t.script
|
||||
// RUN: ld.lld %t.o %t1.so --version-script %t.script -o %t --shared --gc-sections --eh-frame-hdr -soname main.so
|
||||
// RUN: ld.lld %t.o %t1.so --version-script %t.script -o %t --shared --gc-sections --eh-frame-hdr -soname main.so -z separate-code
|
||||
|
||||
// RUN: llvm-objcopy --extract-main-partition %t %t0
|
||||
// RUN: llvm-objcopy --extract-partition=part1 %t %t1
|
||||
|
|
|
|||
|
|
@ -94,7 +94,7 @@
|
|||
# CHECKEXE-NEXT: Version: 1
|
||||
# CHECKEXE-NEXT: Entry: 0x201000
|
||||
# CHECKEXE-NEXT: ProgramHeaderOffset: 0x40
|
||||
# CHECKEXE-NEXT: SectionHeaderOffset: 0x21A0
|
||||
# CHECKEXE-NEXT: SectionHeaderOffset: 0x11F8
|
||||
# CHECKEXE-NEXT: Flags [
|
||||
# CHECKEXE-NEXT: ]
|
||||
# CHECKEXE-NEXT: HeaderSize: 64
|
||||
|
|
|
|||
Loading…
Reference in New Issue