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-rw-r--r--include/asm-sh/elf.h53
-rw-r--r--include/asm-sh/mmu.h4
-rw-r--r--include/asm-sh/ptrace.h5
3 files changed, 61 insertions, 1 deletions
diff --git a/include/asm-sh/elf.h b/include/asm-sh/elf.h
index 05092da1aa5..f01449a8d37 100644
--- a/include/asm-sh/elf.h
+++ b/include/asm-sh/elf.h
@@ -1,10 +1,15 @@
#ifndef __ASM_SH_ELF_H
#define __ASM_SH_ELF_H
+#include <linux/utsname.h>
#include <asm/auxvec.h>
#include <asm/ptrace.h>
#include <asm/user.h>
+/* ELF header e_flags defines */
+#define EF_SH_PIC 0x100 /* -fpic */
+#define EF_SH_FDPIC 0x8000 /* -mfdpic */
+
/* SH (particularly SHcompact) relocation types */
#define R_SH_NONE 0
#define R_SH_DIR32 1
@@ -43,6 +48,28 @@
#define R_SH_RELATIVE 165
#define R_SH_GOTOFF 166
#define R_SH_GOTPC 167
+
+/* FDPIC relocs */
+#define R_SH_GOT20 70
+#define R_SH_GOTOFF20 71
+#define R_SH_GOTFUNCDESC 72
+#define R_SH_GOTFUNCDESC20 73
+#define R_SH_GOTOFFFUNCDESC 74
+#define R_SH_GOTOFFFUNCDESC20 75
+#define R_SH_FUNCDESC 76
+#define R_SH_FUNCDESC_VALUE 77
+
+#if 0 /* XXX - later .. */
+#define R_SH_GOT20 198
+#define R_SH_GOTOFF20 199
+#define R_SH_GOTFUNCDESC 200
+#define R_SH_GOTFUNCDESC20 201
+#define R_SH_GOTOFFFUNCDESC 202
+#define R_SH_GOTOFFFUNCDESC20 203
+#define R_SH_FUNCDESC 204
+#define R_SH_FUNCDESC_VALUE 205
+#endif
+
/* SHmedia relocs */
#define R_SH_IMM_LOW16 246
#define R_SH_IMM_LOW16_PCREL 247
@@ -77,9 +104,12 @@ typedef struct user_fpu_struct 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_SH )
+#define elf_check_arch(x) ((x)->e_machine == EM_SH)
+#define elf_check_fdpic(x) ((x)->e_flags & EF_SH_FDPIC)
+#define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC)
#define USE_ELF_CORE_DUMP
+#define ELF_FDPIC_CORE_EFLAGS EF_SH_FDPIC
#define ELF_EXEC_PAGESIZE PAGE_SIZE
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
@@ -136,6 +166,27 @@ typedef struct user_fpu_struct elf_fpregset_t;
_r->regs[8]=0; _r->regs[9]=0; _r->regs[10]=0; _r->regs[11]=0; \
_r->regs[12]=0; _r->regs[13]=0; _r->regs[14]=0; \
_r->sr = SR_FD; } while (0)
+
+#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, \
+ _dynamic_addr) \
+do { \
+ _r->regs[0] = 0; \
+ _r->regs[1] = 0; \
+ _r->regs[2] = 0; \
+ _r->regs[3] = 0; \
+ _r->regs[4] = 0; \
+ _r->regs[5] = 0; \
+ _r->regs[6] = 0; \
+ _r->regs[7] = 0; \
+ _r->regs[8] = _exec_map_addr; \
+ _r->regs[9] = _interp_map_addr; \
+ _r->regs[10] = _dynamic_addr; \
+ _r->regs[11] = 0; \
+ _r->regs[12] = 0; \
+ _r->regs[13] = 0; \
+ _r->regs[14] = 0; \
+ _r->sr = SR_FD; \
+} while (0)
#endif
#define SET_PERSONALITY(ex, ibcs2) set_personality(PER_LINUX_32BIT)
diff --git a/include/asm-sh/mmu.h b/include/asm-sh/mmu.h
index eb0358c097d..fdcb93bc6d1 100644
--- a/include/asm-sh/mmu.h
+++ b/include/asm-sh/mmu.h
@@ -12,6 +12,10 @@ typedef struct {
struct vm_list_struct *vmlist;
unsigned long end_brk;
#endif
+#ifdef CONFIG_BINFMT_ELF_FDPIC
+ unsigned long exec_fdpic_loadmap;
+ unsigned long interp_fdpic_loadmap;
+#endif
} mm_context_t;
/*
diff --git a/include/asm-sh/ptrace.h b/include/asm-sh/ptrace.h
index 7d36dc3bee6..643ab5a7cf3 100644
--- a/include/asm-sh/ptrace.h
+++ b/include/asm-sh/ptrace.h
@@ -87,6 +87,11 @@ struct pt_dspregs {
unsigned long mod;
};
+#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
+
+#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
+#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
+
#define PTRACE_GETDSPREGS 55
#define PTRACE_SETDSPREGS 56
#endif