diff options
| author | Paul E. Murphy <murp@ibm.com> | 2021-07-14 14:09:27 -0500 |
|---|---|---|
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | 2021-11-05 19:14:22 +0000 |
| commit | fa16efb8358e0cb23e285803075764abbdcffe5e (patch) | |
| tree | 48840800c98379e5fb0c286723c1b300297e48d7 /src/debug/elf | |
| parent | 93bab8a2f918afa8417f7b46da69c21d643de880 (diff) | |
| download | go-fa16efb8358e0cb23e285803075764abbdcffe5e.tar.xz | |
cmd/link: enable internal linking of PIE binaries on ppc64le
The amd64/arm64 relocation processing is used as a template
and updated for ppc64le.
This requires updating the TOC relocation handling code to
support linux type TOC relocations too (note, AIX uses
TOC-indirect accesses).
Noteably, the shared flag of go functions is used as a proxy
for the local entry point offset encoded in elf objects. Functions
in go ppc64le shared objects always[1] insert 2 instructions to
regenerate the TOC pointer.
[1] excepting a couple special runtime functions, see preprocess
in obj9.go for specific details of this behavior.
Change-Id: I3646e6dc8a0a0ffe712771a976983315eae5c418
Reviewed-on: https://go-review.googlesource.com/c/go/+/352829
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
Diffstat (limited to 'src/debug/elf')
| -rw-r--r-- | src/debug/elf/elf.go | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/debug/elf/elf.go b/src/debug/elf/elf.go index 9f8399d4d3..4c51bc4de2 100644 --- a/src/debug/elf/elf.go +++ b/src/debug/elf/elf.go @@ -2349,6 +2349,7 @@ const ( R_PPC64_GOT16_HI R_PPC64 = 16 // R_POWERPC_GOT16_HI R_PPC64_GOT16_HA R_PPC64 = 17 // R_POWERPC_GOT16_HA R_PPC64_JMP_SLOT R_PPC64 = 21 // R_POWERPC_JMP_SLOT + R_PPC64_RELATIVE R_PPC64 = 22 // R_POWERPC_RELATIVE R_PPC64_REL32 R_PPC64 = 26 // R_POWERPC_REL32 R_PPC64_ADDR64 R_PPC64 = 38 R_PPC64_ADDR16_HIGHER R_PPC64 = 39 @@ -2457,6 +2458,7 @@ var rppc64Strings = []intName{ {16, "R_PPC64_GOT16_HI"}, {17, "R_PPC64_GOT16_HA"}, {21, "R_PPC64_JMP_SLOT"}, + {22, "R_PPC64_RELATIVE"}, {26, "R_PPC64_REL32"}, {38, "R_PPC64_ADDR64"}, {39, "R_PPC64_ADDR16_HIGHER"}, |