#ifndef __ASMARM_ELF_H
#define __ASMARM_ELF_H
-
+#ifndef __ASSEMBLY__
/*
* ELF register definitions..
*/
-
#include <asm/ptrace.h>
#include <asm/user.h>
-#ifdef __KERNEL
-#include <asm/procinfo.h>
-#endif
typedef unsigned long elf_greg_t;
typedef unsigned long elf_freg_t[3];
+#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef struct user_fp elf_fpregset_t;
+#endif
+
#define EM_ARM 40
#define EF_ARM_APCS26 0x08
#define EF_ARM_SOFT_FLOAT 0x200
#define R_ARM_CALL 28
#define R_ARM_JUMP24 29
-#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-typedef struct user_fp elf_fpregset_t;
-
-/*
- * This is used to ensure we don't load something for the wrong architecture.
- */
-#define elf_check_arch(x) ( ((x)->e_machine == EM_ARM) && (ELF_PROC_OK((x))) )
-
/*
* These are used to set parameters in the core dumps.
*/
#endif
#define ELF_ARCH EM_ARM
-#define USE_ELF_CORE_DUMP
-#define ELF_EXEC_PAGESIZE 4096
-
-/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
- use of this is to invoke "./ld.so someprog" to test out a new version of
- the loader. We need to make sure that it is out of the way of the program
- that it will "exec", and that there is sufficient room for the brk. */
-
-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
-
-/* When the program starts, a1 contains a pointer to a function to be
- registered with atexit, as per the SVR4 ABI. A value of 0 means we
- have no such handler. */
-#define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0
-
-/* This yields a mask that user programs can use to figure out what
- instruction set this cpu supports. */
+/*
+ * HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP
+ */
+#define HWCAP_SWP 1
+#define HWCAP_HALF 2
+#define HWCAP_THUMB 4
+#define HWCAP_26BIT 8 /* Play it safe */
+#define HWCAP_FAST_MULT 16
+#define HWCAP_FPA 32
+#define HWCAP_VFP 64
+#define HWCAP_EDSP 128
+#define HWCAP_JAVA 256
+#define HWCAP_IWMMXT 512
+#define HWCAP_CRUNCH 1024
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this cpu supports.
+ */
#define ELF_HWCAP (elf_hwcap)
+extern unsigned int elf_hwcap;
-/* This yields a string that ld.so will use to load implementation
- specific libraries for optimization. This is more specific in
- intent than poking at uname or /proc/cpuinfo. */
-
-/* For now we just provide a fairly general string that describes the
- processor family. This could be made more specific later if someone
- implemented optimisations that require it. 26-bit CPUs give you
- "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
- supported). 32-bit CPUs give you "v3[lb]" for anything based on an
- ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
- core. */
-
+/*
+ * This yields a string that ld.so will use to load implementation
+ * specific libraries for optimization. This is more specific in
+ * intent than poking at uname or /proc/cpuinfo.
+ *
+ * For now we just provide a fairly general string that describes the
+ * processor family. This could be made more specific later if someone
+ * implemented optimisations that require it. 26-bit CPUs give you
+ * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
+ * supported). 32-bit CPUs give you "v3[lb]" for anything based on an
+ * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
+ * core.
+ */
#define ELF_PLATFORM_SIZE 8
-extern char elf_platform[];
#define ELF_PLATFORM (elf_platform)
-#ifdef __KERNEL__
+extern char elf_platform[];
+#endif
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x) ((x)->e_machine == EM_ARM && ELF_PROC_OK(x))
/*
* 32-bit code is always OK. Some cpus can do 26-bit, some can't.
#define ELF_PROC_OK(x) (ELF_THUMB_OK(x) && ELF_26BIT_OK(x))
#define ELF_THUMB_OK(x) \
- (( (elf_hwcap & HWCAP_THUMB) && ((x)->e_entry & 1) == 1) || \
+ ((elf_hwcap & HWCAP_THUMB && ((x)->e_entry & 1) == 1) || \
((x)->e_entry & 3) == 0)
#define ELF_26BIT_OK(x) \
- (( (elf_hwcap & HWCAP_26BIT) && (x)->e_flags & EF_ARM_APCS26) || \
+ ((elf_hwcap & HWCAP_26BIT && (x)->e_flags & EF_ARM_APCS26) || \
((x)->e_flags & EF_ARM_APCS26) == 0)
-#ifndef CONFIG_IWMMXT
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 4096
-/* Old NetWinder binaries were compiled in such a way that the iBCS
- heuristic always trips on them. Until these binaries become uncommon
- enough not to care, don't trust the `ibcs' flag here. In any case
- there is no other ELF system currently supported by iBCS.
- @@ Could print a warning message to encourage users to upgrade. */
-#define SET_PERSONALITY(ex,ibcs2) \
- set_personality(((ex).e_flags&EF_ARM_APCS26 ?PER_LINUX :PER_LINUX_32BIT))
+/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
+ use of this is to invoke "./ld.so someprog" to test out a new version of
+ the loader. We need to make sure that it is out of the way of the program
+ that it will "exec", and that there is sufficient room for the brk. */
-#else
+#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
+
+/* When the program starts, a1 contains a pointer to a function to be
+ registered with atexit, as per the SVR4 ABI. A value of 0 means we
+ have no such handler. */
+#define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0
/*
- * All iWMMXt capable CPUs don't support 26-bit mode. Yet they can run
- * legacy binaries which used to contain FPA11 floating point instructions
- * that have always been emulated by the kernel. PFA11 and iWMMXt overlap
- * on coprocessor 1 space though. We therefore must decide if given task
- * is allowed to use CP 0 and 1 for iWMMXt, or if they should be blocked
- * at all times for the prefetch exception handler to catch FPA11 opcodes
- * and emulate them. The best indication to discriminate those two cases
- * is the SOFT_FLOAT flag in the ELF header.
+ * Since the FPA coprocessor uses CP1 and CP2, and iWMMXt uses CP0
+ * and CP1, we only enable access to the iWMMXt coprocessor if the
+ * binary is EABI or softfloat (and thus, guaranteed not to use
+ * FPA instructions.)
*/
-
-#define SET_PERSONALITY(ex,ibcs2) \
-do { \
- set_personality(PER_LINUX_32BIT); \
- if (((ex).e_flags & EF_ARM_EABI_MASK) || \
- ((ex).e_flags & EF_ARM_SOFT_FLOAT)) \
- set_thread_flag(TIF_USING_IWMMXT); \
- else \
- clear_thread_flag(TIF_USING_IWMMXT); \
-} while (0)
-
-#endif
+#define SET_PERSONALITY(ex, ibcs2) \
+ do { \
+ if ((ex).e_flags & EF_ARM_APCS26) { \
+ set_personality(PER_LINUX); \
+ } else { \
+ set_personality(PER_LINUX_32BIT); \
+ if (elf_hwcap & HWCAP_IWMMXT && (ex).e_flags & (EF_ARM_EABI_MASK | EF_ARM_SOFT_FLOAT)) \
+ set_thread_flag(TIF_USING_IWMMXT); \
+ else \
+ clear_thread_flag(TIF_USING_IWMMXT); \
+ } \
+ } while (0)
#endif
git.openpandora.org / pandora-kernel.git / blobdiff