Question: Kernel will hand when insert module built by v3
Platform: XC7 with N1068A+AG101P
Kernel: BSP321 built with nds32le-linux-glibc-v3
Module: ftgpio010
When inserting "ftgpio010.ko" module which is built by nds32le-linux-glibc-v3 toolchain,
kernel will display following message and hand.
ftgpio010: unsupported relocation type 94.
It is OK with module built with v2 or v1 toolchain.
Reason:
It's due to v3 toolchain generate new relocation type and kernel doesn't support this type.
Solution:
Patches for BSP321 kernel source.
Code:
diff --git a/arch/nds32/include/asm/elf.h b/arch/nds32/include/asm/elf.h
index 89ecdc0..ce2296c 100644
--- a/arch/nds32/include/asm/elf.h
+++ b/arch/nds32/include/asm/elf.h
@@ -79,6 +79,7 @@ do { \
#define R_NDS32_DWARF2_OP1_RELA 77
#define R_NDS32_DWARF2_OP2_RELA 78
#define R_NDS32_DWARF2_LEB_RELA 79
+#define R_NDS32_WORD_9_PCREL_RELA 94
#define R_NDS32_RELA_NOP_MIX 192
#define R_NDS32_RELA_NOP_MAX 255
diff --git a/arch/nds32/kernel/module.c b/arch/nds32/kernel/module.c
index 0402edf..4018d90 100755
--- a/arch/nds32/kernel/module.c
+++ b/arch/nds32/kernel/module.c
@@ -260,7 +260,11 @@ apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab, unsigned int syminde
return -ENOEXEC;
do_reloc32( v - (Elf32_Addr)loc, loc, 0x01ffffff, 1, 0xff000000, 0, NEED_SWAP);
break;
-
+ case R_NDS32_WORD_9_PCREL_RELA:
+ if(exceed_limit((v - (Elf32_Addr)loc), 0x000000ff, module, rel, relindex, i))
+ return -ENOEXEC;
+ do_reloc32( v - (Elf32_Addr)loc, loc, 0x000001ff, 1, 0xffffff00, 0, NEED_SWAP);
+ break;
case R_NDS32_SDA15S3_RELA:
case R_NDS32_SDA15S2_RELA:
case R_NDS32_SDA15S1_RELA:
index 89ecdc0..ce2296c 100644
--- a/arch/nds32/include/asm/elf.h
+++ b/arch/nds32/include/asm/elf.h
@@ -79,6 +79,7 @@ do { \
#define R_NDS32_DWARF2_OP1_RELA 77
#define R_NDS32_DWARF2_OP2_RELA 78
#define R_NDS32_DWARF2_LEB_RELA 79
+#define R_NDS32_WORD_9_PCREL_RELA 94
#define R_NDS32_RELA_NOP_MIX 192
#define R_NDS32_RELA_NOP_MAX 255
diff --git a/arch/nds32/kernel/module.c b/arch/nds32/kernel/module.c
index 0402edf..4018d90 100755
--- a/arch/nds32/kernel/module.c
+++ b/arch/nds32/kernel/module.c
@@ -260,7 +260,11 @@ apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab, unsigned int syminde
return -ENOEXEC;
do_reloc32( v - (Elf32_Addr)loc, loc, 0x01ffffff, 1, 0xff000000, 0, NEED_SWAP);
break;
-
+ case R_NDS32_WORD_9_PCREL_RELA:
+ if(exceed_limit((v - (Elf32_Addr)loc), 0x000000ff, module, rel, relindex, i))
+ return -ENOEXEC;
+ do_reloc32( v - (Elf32_Addr)loc, loc, 0x000001ff, 1, 0xffffff00, 0, NEED_SWAP);
+ break;
case R_NDS32_SDA15S3_RELA:
case R_NDS32_SDA15S2_RELA:
case R_NDS32_SDA15S1_RELA:
Attachment:
Commands to patch this file.
Code:
#cd linux2.6
#cp <file location>/reloc_patch.txt .
#patch -p1 < reloc_patch.txt
#cp <file location>/reloc_patch.txt .
#patch -p1 < reloc_patch.txt