LoongArch: Adjust process management for 32BIT/64BIT

Adjust process management for both 32BIT and 64BIT, including: CPU
context switching, FPU loading/restoring, process dumping and process
tracing routines.

Q: Why modify switch.S?
A: LoongArch32 has no ldptr.d/stptr.d instructions, and asm offsets of
   thead_struct members are too large to be filled in the 12b immediate
   field of ld.w/st.w.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/loongarch/include/asm/elf.h b/arch/loongarch/include/asm/elf.h
index f16bd42456e4..912c50cdd6b7 100644
--- a/arch/loongarch/include/asm/elf.h
+++ b/arch/loongarch/include/asm/elf.h
@@ -120,6 +120,36 @@
 #define R_LARCH_ADD_ULEB128			107
 #define R_LARCH_SUB_ULEB128			108
 #define R_LARCH_64_PCREL			109
+#define R_LARCH_CALL36				110
+#define R_LARCH_TLS_DESC_PC_HI20		111
+#define R_LARCH_TLS_DESC_PC_LO12		112
+#define R_LARCH_TLS_DESC64_PC_LO20		113
+#define R_LARCH_TLS_DESC64_PC_HI12		114
+#define R_LARCH_TLS_DESC_HI20			115
+#define R_LARCH_TLS_DESC_LO12			116
+#define R_LARCH_TLS_DESC64_LO20			117
+#define R_LARCH_TLS_DESC64_HI12			118
+#define R_LARCH_TLS_DESC_LD			119
+#define R_LARCH_TLS_DESC_CALL			120
+#define R_LARCH_TLS_LE_HI20_R			121
+#define R_LARCH_TLS_LE_ADD_R			122
+#define R_LARCH_TLS_LE_LO12_R			123
+#define R_LARCH_TLS_LD_PCREL20_S2		124
+#define R_LARCH_TLS_GD_PCREL20_S2		125
+#define R_LARCH_TLS_DESC_PCREL20_S2		126
+#define R_LARCH_CALL30				127
+#define R_LARCH_PCADD_HI20			128
+#define R_LARCH_PCADD_LO12			129
+#define R_LARCH_GOT_PCADD_HI20			130
+#define R_LARCH_GOT_PCADD_LO12			131
+#define R_LARCH_TLS_IE_PCADD_HI20		132
+#define R_LARCH_TLS_IE_PCADD_LO12		133
+#define R_LARCH_TLS_LD_PCADD_HI20		134
+#define R_LARCH_TLS_LD_PCADD_LO12		135
+#define R_LARCH_TLS_GD_PCADD_HI20		136
+#define R_LARCH_TLS_GD_PCADD_LO12		137
+#define R_LARCH_TLS_DESC_PCADD_HI20		138
+#define R_LARCH_TLS_DESC_PCADD_LO12		139
 
 #ifndef ELF_ARCH
 
@@ -156,6 +186,7 @@ typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 typedef double elf_fpreg_t;
 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 
+void loongarch_dump_regs32(u32 *uregs, const struct pt_regs *regs);
 void loongarch_dump_regs64(u64 *uregs, const struct pt_regs *regs);
 
 #ifdef CONFIG_32BIT