From c03e7e6d7294248c1bdcac1576923fd898f4d9bf Mon Sep 17 00:00:00 2001
From: RAJEES RAHMAN P P <39120657+rajez133@users.noreply.github.com>
Date: Tue, 24 Sep 2024 07:39:30 +0530
Subject: [PATCH] Addding relocation type for PPC 32 EABI (#532)

---
 elftools/elf/descriptions.py |  5 +++-
 elftools/elf/enums.py        | 58 ++++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+), 1 deletion(-)

diff --git a/elftools/elf/descriptions.py b/elftools/elf/descriptions.py
index 838668b2..5fc9a4a2 100644
--- a/elftools/elf/descriptions.py
+++ b/elftools/elf/descriptions.py
@@ -12,7 +12,7 @@
     ENUM_RELOC_TYPE_ARM, ENUM_RELOC_TYPE_AARCH64, ENUM_RELOC_TYPE_PPC64,
     ENUM_RELOC_TYPE_MIPS, ENUM_ATTR_TAG_ARM, ENUM_ATTR_TAG_RISCV,
     ENUM_RELOC_TYPE_S390X, ENUM_RELOC_TYPE_LOONGARCH, ENUM_DT_FLAGS,
-    ENUM_DT_FLAGS_1)
+    ENUM_DT_FLAGS_1, ENUM_RELOC_TYPE_PPC)
 from .constants import (
     P_FLAGS, RH_FLAGS, SH_FLAGS, SUNW_SYMINFO_FLAGS, VER_FLAGS)
 from ..common.utils import bytes2hex
@@ -151,6 +151,8 @@ def describe_reloc_type(x, elffile):
         return _DESCR_RELOC_TYPE_AARCH64.get(x, _unknown)
     elif arch == '64-bit PowerPC':
         return _DESCR_RELOC_TYPE_PPC64.get(x, _unknown)
+    elif arch == 'PowerPC':
+        return _DESCR_RELOC_TYPE_PPC.get(x, _unknown)
     elif arch == 'IBM S/390':
         return _DESCR_RELOC_TYPE_S390X.get(x, _unknown)
     elif arch == 'MIPS':
@@ -691,6 +693,7 @@ def _reverse_dict(d, low_priority=()):
 _DESCR_RELOC_TYPE_ARM = _reverse_dict(ENUM_RELOC_TYPE_ARM)
 _DESCR_RELOC_TYPE_AARCH64 = _reverse_dict(ENUM_RELOC_TYPE_AARCH64)
 _DESCR_RELOC_TYPE_PPC64 = _reverse_dict(ENUM_RELOC_TYPE_PPC64)
+_DESCR_RELOC_TYPE_PPC = _reverse_dict(ENUM_RELOC_TYPE_PPC)
 _DESCR_RELOC_TYPE_S390X = _reverse_dict(ENUM_RELOC_TYPE_S390X)
 _DESCR_RELOC_TYPE_MIPS = _reverse_dict(ENUM_RELOC_TYPE_MIPS)
 _DESCR_RELOC_TYPE_LOONGARCH = _reverse_dict(ENUM_RELOC_TYPE_LOONGARCH)
diff --git a/elftools/elf/enums.py b/elftools/elf/enums.py
index 9e519ab4..6ab9db0c 100644
--- a/elftools/elf/enums.py
+++ b/elftools/elf/enums.py
@@ -1523,6 +1523,64 @@
     R_PPC64_GNU_VTENTRY=254,
 )
 
+# https://example61560.files.wordpress.com/2016/11/powerpc_abi.pdf
+# See 4.13.5 Relocation Types Table.
+ENUM_RELOC_TYPE_PPC = dict(
+    R_PPC_NONE=0,
+    R_PPC_ADDR32=1,
+    R_PPC_ADDR24=2,
+    R_PPC_ADDR16=3,
+    R_PPC_ADDR16_LO=4,
+    R_PPC_ADDR16_HI=5,
+    R_PPC_ADDR16_HA=6,
+    R_PPC_ADDR14=7,
+    R_PPC_ADDR14_BRTAKEN=8,
+    R_PPC_ADDR14_BRNTAKEN=9,
+    R_PPC_REL24=10,
+    R_PPC_REL14=11,
+    R_PPC_REL14_BRTAKEN=12,
+    R_PPC_REL14_BRNTAKEN=13,
+    R_PPC_GOT16=14,
+    R_PPC_GOT16_LO=15,
+    R_PPC_GOT16_HI=16,
+    R_PPC_GOT16_HA=17,
+    R_PPC_PLTREL24=18,
+    R_PPC_COPY=19,
+    R_PPC_GLOB_DAT=20,
+    R_PPC_JMP_SLOT=21,
+    R_PPC_RELATIVE=22,
+    R_PPC_LOCAL24PC=23,
+    R_PPC_UADDR32=24,
+    R_PPC_UADDR16=25,
+    R_PPC_REL32=26,
+    R_PPC_PLT32=27,
+    R_PPC_PLTREL32=28,
+    R_PPC_PLT16_LO=29,
+    R_PPC_PLT16_HI=30,
+    R_PPC_PLT16_HA=31,
+    R_PPC_SECTOFF=33,
+    R_PPC_SECTOFF_LO=34,
+    R_PPC_SECTOFF_HI=35,
+    R_PPC_SECTOFF_HA=36,
+    R_PPC_ADDR30=37,
+    R_PPC_EMB_NADDR32=101,
+    R_PPC_EMB_NADDR16=102,
+    R_PPC_EMB_NADDR16_LO=103,
+    R_PPC_EMB_NADDR16_HI=104,
+    R_PPC_EMB_NADDR16_HA=105,
+    R_PPC_EMB_SDAI16=106,
+    R_PPC_EMB_SDA2I16=107,
+    R_PPC_EMB_SDA2REL=108,
+    R_PPC_EMB_SDA21=109,
+    R_PPC_EMB_MRKREF=110,
+    R_PPC_EMB_RELSEC16=111,
+    R_PPC_EMB_RELST_LO=112,
+    R_PPC_EMB_RELST_HI=113,
+    R_PPC_EMB_RELST_HA=114,
+    R_PPC_EMB_BIT_FLD=115,
+    R_PPC_EMB_RELSDA=116,
+)
+
 # https://gitlab.utu.fi/soft/binutils-gdb/-/blob/d18547d8b08615a58db18ad3e43f721dc92ae298/include/elf/v850.h
 ENUM_RELOC_TYPE_V850 = dict(
     R_V800_NONE=0,