objtool/LoongArch: Enable objtool to be built

[linux-2.6-block.git] / tools / objtool / arch / loongarch / decode.c

diff --git a/tools/objtool/arch/loongarch/decode.c b/tools/objtool/arch/loongarch/decode.c
new file mode 100644 (file)
index 0000000..cc74ba4
--- /dev/null
+++ b/tools/objtool/arch/loongarch/decode.c
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include <string.h>
+#include <objtool/check.h>
+
+int arch_ftrace_match(char *name)
+{
+       return !strcmp(name, "_mcount");
+}
+
+unsigned long arch_jump_destination(struct instruction *insn)
+{
+       return insn->offset + (insn->immediate << 2);
+}
+
+unsigned long arch_dest_reloc_offset(int addend)
+{
+       return addend;
+}
+
+bool arch_pc_relative_reloc(struct reloc *reloc)
+{
+       return false;
+}
+
+bool arch_callee_saved_reg(unsigned char reg)
+{
+       switch (reg) {
+       case CFI_RA:
+       case CFI_FP:
+       case CFI_S0 ... CFI_S8:
+               return true;
+       default:
+               return false;
+       }
+}
+
+int arch_decode_hint_reg(u8 sp_reg, int *base)
+{
+       return 0;
+}
+
+int arch_decode_instruction(struct objtool_file *file, const struct section *sec,
+                           unsigned long offset, unsigned int maxlen,
+                           struct instruction *insn)
+{
+       return 0;
+}
+
+const char *arch_nop_insn(int len)
+{
+       return NULL;
+}
+
+const char *arch_ret_insn(int len)
+{
+       return NULL;
+}
+
+void arch_initial_func_cfi_state(struct cfi_init_state *state)
+{
+       int i;
+
+       for (i = 0; i < CFI_NUM_REGS; i++) {
+               state->regs[i].base = CFI_UNDEFINED;
+               state->regs[i].offset = 0;
+       }
+
+       /* initial CFA (call frame address) */
+       state->cfa.base = CFI_SP;
+       state->cfa.offset = 0;
+}