commit cb33da57aaa368d575825d80d734374e3ef8c472
Author: blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162>
Date:   Tue Oct 9 16:34:29 2007 +0000

     Support for executing 32 bit SPARC32PLUS files for Sparc64 user emulator
    
    
    git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3378 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 1db6bab..fbe7ddd 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -12,6 +12,66 @@
 #include "qemu.h"
 #include "disas.h"
 
+/* from personality.h */
+
+/*
+ * Flags for bug emulation.
+ *
+ * These occupy the top three bytes.
+ */
+enum {
+	ADDR_NO_RANDOMIZE = 	0x0040000,	/* disable randomization of VA space */
+	FDPIC_FUNCPTRS =	0x0080000,	/* userspace function ptrs point to descriptors
+						 * (signal handling)
+						 */
+	MMAP_PAGE_ZERO =	0x0100000,
+	ADDR_COMPAT_LAYOUT =	0x0200000,
+	READ_IMPLIES_EXEC =	0x0400000,
+	ADDR_LIMIT_32BIT =	0x0800000,
+	SHORT_INODE =		0x1000000,
+	WHOLE_SECONDS =		0x2000000,
+	STICKY_TIMEOUTS	=	0x4000000,
+	ADDR_LIMIT_3GB = 	0x8000000,
+};
+
+/*
+ * Personality types.
+ *
+ * These go in the low byte.  Avoid using the top bit, it will
+ * conflict with error returns.
+ */
+enum {
+	PER_LINUX =		0x0000,
+	PER_LINUX_32BIT =	0x0000 | ADDR_LIMIT_32BIT,
+	PER_LINUX_FDPIC =	0x0000 | FDPIC_FUNCPTRS,
+	PER_SVR4 =		0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+	PER_SVR3 =		0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
+	PER_SCOSVR3 =		0x0003 | STICKY_TIMEOUTS |
+					 WHOLE_SECONDS | SHORT_INODE,
+	PER_OSR5 =		0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
+	PER_WYSEV386 =		0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
+	PER_ISCR4 =		0x0005 | STICKY_TIMEOUTS,
+	PER_BSD =		0x0006,
+	PER_SUNOS =		0x0006 | STICKY_TIMEOUTS,
+	PER_XENIX =		0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
+	PER_LINUX32 =		0x0008,
+	PER_LINUX32_3GB =	0x0008 | ADDR_LIMIT_3GB,
+	PER_IRIX32 =		0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
+	PER_IRIXN32 =		0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
+	PER_IRIX64 =		0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
+	PER_RISCOS =		0x000c,
+	PER_SOLARIS =		0x000d | STICKY_TIMEOUTS,
+	PER_UW7 =		0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+	PER_OSF4 =		0x000f,			 /* OSF/1 v4 */
+	PER_HPUX =		0x0010,
+	PER_MASK =		0x00ff,
+};
+
+/*
+ * Return the base personality without flags.
+ */
+#define personality(pers)	(pers & PER_MASK)
+
 /* this flag is uneffective under linux too, should be deleted */
 #ifndef MAP_DENYWRITE
 #define MAP_DENYWRITE 0
@@ -154,7 +214,7 @@ enum
 
 #define ELF_START_MMAP 0x80000000
 
-#define elf_check_arch(x) ( (x) == EM_SPARCV9 )
+#define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS )
 
 #define ELF_CLASS   ELFCLASS64
 #define ELF_DATA    ELFDATA2MSB
@@ -168,7 +228,10 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
     regs->pc = infop->entry;
     regs->npc = regs->pc + 4;
     regs->y = 0;
-    regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
+    if (personality(infop->personality) == PER_LINUX32)
+        regs->u_regs[14] = infop->start_stack - 16 * 4;
+    else
+        regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
 }
 
 #else
@@ -412,6 +475,13 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
 #define ELF_HWCAP 0
 #endif
 
+#ifdef OVERRIDE_ELF_CLASS
+#undef ELF_CLASS
+#define ELF_CLASS OVERRIDE_ELF_CLASS
+#undef bswaptls
+#define bswaptls(ptr) bswap32s(ptr)
+#endif
+
 #include "elf.h"
 
 struct exec
@@ -439,25 +509,6 @@ struct exec
 /* max code+data+bss+brk space allocated to ET_DYN executables */
 #define ET_DYN_MAP_SIZE (128 * 1024 * 1024)
 
-/* from personality.h */
-
-/* Flags for bug emulation. These occupy the top three bytes. */
-#define STICKY_TIMEOUTS		0x4000000
-#define WHOLE_SECONDS		0x2000000
-
-/* Personality types. These go in the low byte. Avoid using the top bit,
- * it will conflict with error returns.
- */
-#define PER_MASK		(0x00ff)
-#define PER_LINUX		(0x0000)
-#define PER_SVR4		(0x0001 | STICKY_TIMEOUTS)
-#define PER_SVR3		(0x0002 | STICKY_TIMEOUTS)
-#define PER_SCOSVR3		(0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS)
-#define PER_WYSEV386		(0x0004 | STICKY_TIMEOUTS)
-#define PER_ISCR4		(0x0005 | STICKY_TIMEOUTS)
-#define PER_BSD			(0x0006)
-#define PER_XENIX		(0x0007 | STICKY_TIMEOUTS)
-
 /* Necessary parameters */
 #define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
 #define TARGET_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(TARGET_ELF_EXEC_PAGESIZE-1))
@@ -587,8 +638,8 @@ static target_ulong copy_elf_strings(int argc,char ** argv, void **page,
     return p;
 }
 
-target_ulong setup_arg_pages(target_ulong p, struct linux_binprm * bprm,
-                             struct image_info * info)
+static target_ulong setup_arg_pages(target_ulong p, struct linux_binprm *bprm,
+                                    struct image_info *info)
 {
     target_ulong stack_base, size, error;
     int i;
