#define EF_MIPS_ABI2 0x00000020
#define EF_MIPS_OPTIONS_FIRST 0x00000080
#define EF_MIPS_32BITMODE 0x00000100
+#define EF_MIPS_FP64 0x00000200
#define EF_MIPS_ABI 0x0000f000
#define EF_MIPS_ARCH 0xf0000000
#ifdef CONFIG_32BIT
+/*
+ * In order to be sure that we don't attempt to execute an O32 binary which
+ * requires 64 bit FP (FR=1) on a system which does not support it we refuse
+ * to execute any binary which has bits specified by the following macro set
+ * in its ELF header flags.
+ */
+#ifdef CONFIG_MIPS_O32_FP64_SUPPORT
+# define __MIPS_O32_FP64_MUST_BE_ZERO 0
+#else
+# define __MIPS_O32_FP64_MUST_BE_ZERO EF_MIPS_FP64
+#endif
+
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
__res = 0; \
if (((__h->e_flags & EF_MIPS_ABI) != 0) && \
((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
+ __res = 0; \
+ if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO) \
__res = 0; \
\
__res; \
#define SET_PERSONALITY(ex) \
do { \
+ if ((ex).e_flags & EF_MIPS_FP64) \
+ clear_thread_flag(TIF_32BIT_FPREGS); \
+ else \
+ set_thread_flag(TIF_32BIT_FPREGS); \
+ \
if (personality(current->personality) != PER_LINUX) \
set_personality(PER_LINUX); \
\
#endif
#ifdef CONFIG_MIPS32_O32
-#define __SET_PERSONALITY32_O32() \
+#define __SET_PERSONALITY32_O32(ex) \
do { \
set_thread_flag(TIF_32BIT_REGS); \
set_thread_flag(TIF_32BIT_ADDR); \
+ \
+ if (!((ex).e_flags & EF_MIPS_FP64)) \
+ set_thread_flag(TIF_32BIT_FPREGS); \
+ \
current->thread.abi = &mips_abi_32; \
} while (0)
#else
-#define __SET_PERSONALITY32_O32() \
+#define __SET_PERSONALITY32_O32(ex) \
do { } while (0)
#endif
((ex).e_flags & EF_MIPS_ABI) == 0) \
__SET_PERSONALITY32_N32(); \
else \
- __SET_PERSONALITY32_O32(); \
+ __SET_PERSONALITY32_O32(ex); \
} while (0)
#else
#define __SET_PERSONALITY32(ex) do { } while (0)
unsigned int p; \
\
clear_thread_flag(TIF_32BIT_REGS); \
+ clear_thread_flag(TIF_32BIT_FPREGS); \
clear_thread_flag(TIF_32BIT_ADDR); \
\
if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \