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-rw-r--r--arch/mips/include/asm/elfcore-compat.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/mips/include/asm/elfcore-compat.h b/arch/mips/include/asm/elfcore-compat.h
new file mode 100644
index 000000000..2f0f0103c
--- /dev/null
+++ b/arch/mips/include/asm/elfcore-compat.h
@@ -0,0 +1,29 @@
+#ifndef _ASM_MIPS_ELFCORE_COMPAT_H
+#define _ASM_MIPS_ELFCORE_COMPAT_H
+
+/*
+ * On mips we have two 32bit ABIs - o32 and n32. The latter
+ * has bigger registers, so we use it for compat_elf_regset_t.
+ * The former uses o32_elf_prstatus and PRSTATUS_SIZE/SET_PR_FPVALID
+ * are used to choose the size and location of ->pr_fpvalid of
+ * the layout actually used.
+ */
+typedef elf_gregset_t compat_elf_gregset_t;
+
+struct o32_elf_prstatus
+{
+ struct compat_elf_prstatus_common common;
+ unsigned int pr_reg[ELF_NGREG];
+ compat_int_t pr_fpvalid;
+};
+
+#define PRSTATUS_SIZE \
+ (!test_thread_flag(TIF_32BIT_REGS) \
+ ? sizeof(struct compat_elf_prstatus) \
+ : sizeof(struct o32_elf_prstatus))
+#define SET_PR_FPVALID(S) \
+ (*(!test_thread_flag(TIF_32BIT_REGS) \
+ ? &(S)->pr_fpvalid \
+ : &((struct o32_elf_prstatus *)(S))->pr_fpvalid) = 1)
+
+#endif