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[AMDGPU] Update relocation record description

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Document which relocation records are static and dynamic.

Differential Revision: https://reviews.llvm.org/D45587

llvm-svn: 329981
This commit is contained in:
Tony Tye 2018-04-13 01:01:27 +00:00
parent 9d297de1c9
commit 0a38435330
1 changed files with 14 additions and 4 deletions
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18
docs/AMDGPUUsage.rst
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@ -763,12 +763,16 @@ The following relocation types are supported:
Relocation Type Kind Value Field Calculation
========================== ======= ===== ========== ==============================
``R_AMDGPU_NONE`` 0 *none* *none*
``R_AMDGPU_ABS32_LO`` Dynamic 1 ``word32`` (S + A) & 0xFFFFFFFF
``R_AMDGPU_ABS32_HI`` Dynamic 2 ``word32`` (S + A) >> 32
``R_AMDGPU_ABS64`` Dynamic 3 ``word64`` S + A
``R_AMDGPU_ABS32_LO`` Static, 1 ``word32`` (S + A) & 0xFFFFFFFF
Dynamic
``R_AMDGPU_ABS32_HI`` Static, 2 ``word32`` (S + A) >> 32
Dynamic
``R_AMDGPU_ABS64`` Static, 3 ``word64`` S + A
Dynamic
``R_AMDGPU_REL32`` Static 4 ``word32`` S + A - P
``R_AMDGPU_REL64`` Static 5 ``word64`` S + A - P
``R_AMDGPU_ABS32`` Static 6 ``word32`` S + A
``R_AMDGPU_ABS32`` Static, 6 ``word32`` S + A
Dynamic
``R_AMDGPU_GOTPCREL`` Static 7 ``word32`` G + GOT + A - P
``R_AMDGPU_GOTPCREL32_LO`` Static 8 ``word32`` (G + GOT + A - P) & 0xFFFFFFFF
``R_AMDGPU_GOTPCREL32_HI`` Static 9 ``word32`` (G + GOT + A - P) >> 32
@ -778,6 +782,12 @@ The following relocation types are supported:
``R_AMDGPU_RELATIVE64`` Dynamic 13 ``word64`` B + A
========================== ======= ===== ========== ==============================
``R_AMDGPU_ABS32_LO`` and ``R_AMDGPU_ABS32_HI`` are only supported by
the ``mesa3d`` OS, which does not support ``R_AMDGPU_ABS64``.
There is no current OS loader support for 32 bit programs and so
``R_AMDGPU_ABS32`` is not used.
.. _amdgpu-dwarf:
DWARF