[IA64] Remove COMPAT_IA32 support

This has been broken since May 2008 when Al Viro killed altroot support.
Since nobody has complained, it would appear that there are no users of
this code (A plausible theory since the main OSVs that support ia64 prefer
to use the IA32-EL software emulation).

Signed-off-by: Tony Luck <tony.luck@intel.com>

5 files changed, 1 insertions, 191 deletions

diff --git a/arch/ia64/include/asm/ia32.h b/arch/ia64/include/asm/ia32.h
deleted file mode 100644
index 2390ee1..0000000
--- a/arch/ia64/include/asm/ia32.h
+++ /dev/null
@@ -1,40 +0,0 @@
-#ifndef _ASM_IA64_IA32_H
-#define _ASM_IA64_IA32_H
-
-
-#include <asm/ptrace.h>
-#include <asm/signal.h>
-
-#define IA32_NR_syscalls		285	/* length of syscall table */
-#define IA32_PAGE_SHIFT			12	/* 4KB pages */
-
-#ifndef __ASSEMBLY__
-
-# ifdef CONFIG_IA32_SUPPORT
-
-#define IA32_PAGE_OFFSET	0xc0000000
-
-extern void ia32_cpu_init (void);
-extern void ia32_mem_init (void);
-extern void ia32_gdt_init (void);
-extern int ia32_exception (struct pt_regs *regs, unsigned long isr);
-extern int ia32_intercept (struct pt_regs *regs, unsigned long isr);
-extern int ia32_clone_tls (struct task_struct *child, struct pt_regs *childregs);
-
-# endif /* !CONFIG_IA32_SUPPORT */
-
-/* Declare this unconditionally, so we don't get warnings for unreachable code.  */
-extern int ia32_setup_frame1 (int sig, struct k_sigaction *ka, siginfo_t *info,
-			      sigset_t *set, struct pt_regs *regs);
-#if PAGE_SHIFT > IA32_PAGE_SHIFT
-extern int ia32_copy_ia64_partial_page_list(struct task_struct *,
-					unsigned long);
-extern void ia32_drop_ia64_partial_page_list(struct task_struct *);
-#else
-# define ia32_copy_ia64_partial_page_list(a1, a2)	0
-# define ia32_drop_ia64_partial_page_list(a1)	do { ; } while (0)
-#endif
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_IA64_IA32_H */
diff --git a/arch/ia64/include/asm/processor.h b/arch/ia64/include/asm/processor.h
index 7fa90f7..348e44d 100644
--- a/arch/ia64/include/asm/processor.h
+++ b/arch/ia64/include/asm/processor.h
@@ -270,23 +270,6 @@ typedef struct {
 		 (int __user *) (addr));							\
 })
 
-#ifdef CONFIG_IA32_SUPPORT
-struct desc_struct {
-	unsigned int a, b;
-};
-
-#define desc_empty(desc)		(!((desc)->a | (desc)->b))
-#define desc_equal(desc1, desc2)	(((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
-
-#define GDT_ENTRY_TLS_ENTRIES	3
-#define GDT_ENTRY_TLS_MIN	6
-#define GDT_ENTRY_TLS_MAX 	(GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
-
-#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
-
-struct ia64_partial_page_list;
-#endif
-
 struct thread_struct {
 	__u32 flags;			/* various thread flags (see IA64_THREAD_*) */
 	/* writing on_ustack is performance-critical, so it's worth spending 8 bits on it... */
@@ -298,29 +281,6 @@ struct thread_struct {
 	__u64 rbs_bot;			/* the base address for the RBS */
 	int last_fph_cpu;		/* CPU that may hold the contents of f32-f127 */
 
-#ifdef CONFIG_IA32_SUPPORT
-	__u64 eflag;			/* IA32 EFLAGS reg */
-	__u64 fsr;			/* IA32 floating pt status reg */
-	__u64 fcr;			/* IA32 floating pt control reg */
-	__u64 fir;			/* IA32 fp except. instr. reg */
-	__u64 fdr;			/* IA32 fp except. data reg */
-	__u64 old_k1;			/* old value of ar.k1 */
-	__u64 old_iob;			/* old IOBase value */
-	struct ia64_partial_page_list *ppl; /* partial page list for 4K page size issue */
-        /* cached TLS descriptors. */
-	struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
-
-# define INIT_THREAD_IA32	.eflag =	0,			\
-				.fsr =		0,			\
-				.fcr =		0x17800000037fULL,	\
-				.fir =		0,			\
-				.fdr =		0,			\
-				.old_k1 =	0,			\
-				.old_iob =	0,			\
-				.ppl =		NULL,
-#else
-# define INIT_THREAD_IA32
-#endif /* CONFIG_IA32_SUPPORT */
 #ifdef CONFIG_PERFMON
 	void *pfm_context;		     /* pointer to detailed PMU context */
 	unsigned long pfm_needs_checking;    /* when >0, pending perfmon work on kernel exit */
@@ -342,7 +302,6 @@ struct thread_struct {
 	.rbs_bot =	STACK_TOP - DEFAULT_USER_STACK_SIZE,	\
 	.task_size =	DEFAULT_TASK_SIZE,			\
 	.last_fph_cpu =  -1,					\
-	INIT_THREAD_IA32					\
 	INIT_THREAD_PM						\
 	.dbr =		{0, },					\
 	.ibr =		{0, },					\
@@ -485,11 +444,6 @@ extern void __ia64_load_fpu (struct ia64_fpreg *fph);
 extern void ia64_save_debug_regs (unsigned long *save_area);
 extern void ia64_load_debug_regs (unsigned long *save_area);
 
-#ifdef CONFIG_IA32_SUPPORT
-extern void ia32_save_state (struct task_struct *task);
-extern void ia32_load_state (struct task_struct *task);
-#endif
-
 #define ia64_fph_enable()	do { ia64_rsm(IA64_PSR_DFH); ia64_srlz_d(); } while (0)
 #define ia64_fph_disable()	do { ia64_ssm(IA64_PSR_DFH); ia64_srlz_d(); } while (0)
 
diff --git a/arch/ia64/include/asm/syscall.h b/arch/ia64/include/asm/syscall.h
index 2f758a4..a7ff1c6 100644
--- a/arch/ia64/include/asm/syscall.h
+++ b/arch/ia64/include/asm/syscall.h
@@ -22,33 +22,18 @@ static inline long syscall_get_nr(struct task_struct *task,
 	if ((long)regs->cr_ifs < 0) /* Not a syscall */
 		return -1;
 
-#ifdef CONFIG_IA32_SUPPORT
-	if (IS_IA32_PROCESS(regs))
-		return regs->r1;
-#endif
-
 	return regs->r15;
 }
 
 static inline void syscall_rollback(struct task_struct *task,
 				    struct pt_regs *regs)
 {
-#ifdef CONFIG_IA32_SUPPORT
-	if (IS_IA32_PROCESS(regs))
-		regs->r8 = regs->r1;
-#endif
-
 	/* do nothing */
 }
 
 static inline long syscall_get_error(struct task_struct *task,
 				     struct pt_regs *regs)
 {
-#ifdef CONFIG_IA32_SUPPORT
-	if (IS_IA32_PROCESS(regs))
-		return regs->r8;
-#endif
-
 	return regs->r10 == -1 ? regs->r8:0;
 }
 
@@ -62,13 +47,6 @@ static inline void syscall_set_return_value(struct task_struct *task,
 					    struct pt_regs *regs,
 					    int error, long val)
 {
-#ifdef CONFIG_IA32_SUPPORT
-	if (IS_IA32_PROCESS(regs)) {
-		regs->r8 = (long) error ? error : val;
-		return;
-	}
-#endif
-
 	if (error) {
 		/* error < 0, but ia64 uses > 0 return value */
 		regs->r8 = -error;
@@ -89,37 +67,6 @@ static inline void syscall_get_arguments(struct task_struct *task,
 {
 	BUG_ON(i + n > 6);
 
-#ifdef CONFIG_IA32_SUPPORT
-	if (IS_IA32_PROCESS(regs)) {
-		switch (i + n) {
-		case 6:
-			if (!n--) break;
-			*args++ = regs->r13;
-		case 5:
-			if (!n--) break;
-			*args++ = regs->r15;
-		case 4:
-			if (!n--) break;
-			*args++ = regs->r14;
-		case 3:
-			if (!n--) break;
-			*args++ = regs->r10;
-		case 2:
-			if (!n--) break;
-			*args++ = regs->r9;
-		case 1:
-			if (!n--) break;
-			*args++ = regs->r11;
-		case 0:
-			if (!n--) break;
-		default:
-			BUG();
-			break;
-		}
-
-		return;
-	}
-#endif
 	ia64_syscall_get_set_arguments(task, regs, i, n, args, 0);
 }
 
@@ -130,34 +77,6 @@ static inline void syscall_set_arguments(struct task_struct *task,
 {
 	BUG_ON(i + n > 6);
 
-#ifdef CONFIG_IA32_SUPPORT
-	if (IS_IA32_PROCESS(regs)) {
-		switch (i + n) {
-		case 6:
-			if (!n--) break;
-			regs->r13 = *args++;
-		case 5:
-			if (!n--) break;
-			regs->r15 = *args++;
-		case 4:
-			if (!n--) break;
-			regs->r14 = *args++;
-		case 3:
-			if (!n--) break;
-			regs->r10 = *args++;
-		case 2:
-			if (!n--) break;
-			regs->r9 = *args++;
-		case 1:
-			if (!n--) break;
-			regs->r11 = *args++;
-		case 0:
-			if (!n--) break;
-		}
-
-		return;
-	}
-#endif
 	ia64_syscall_get_set_arguments(task, regs, i, n, args, 1);
 }
 #endif	/* _ASM_SYSCALL_H */
diff --git a/arch/ia64/include/asm/system.h b/arch/ia64/include/asm/system.h
index 927a381..9f342a5 100644
--- a/arch/ia64/include/asm/system.h
+++ b/arch/ia64/include/asm/system.h
@@ -191,15 +191,6 @@ do {								\
 
 #ifdef __KERNEL__
 
-#ifdef CONFIG_IA32_SUPPORT
-# define IS_IA32_PROCESS(regs)	(ia64_psr(regs)->is != 0)
-#else
-# define IS_IA32_PROCESS(regs)		0
-struct task_struct;
-static inline void ia32_save_state(struct task_struct *t __attribute__((unused))){}
-static inline void ia32_load_state(struct task_struct *t __attribute__((unused))){}
-#endif
-
 /*
  * Context switch from one thread to another.  If the two threads have
  * different address spaces, schedule() has already taken care of
@@ -233,7 +224,7 @@ extern void ia64_account_on_switch (struct task_struct *prev, struct task_struct
 
 #define IA64_HAS_EXTRA_STATE(t)							\
 	((t)->thread.flags & (IA64_THREAD_DBG_VALID|IA64_THREAD_PM_VALID)	\
-	 || IS_IA32_PROCESS(task_pt_regs(t)) || PERFMON_IS_SYSWIDE())
+	 || PERFMON_IS_SYSWIDE())
 
 #define __switch_to(prev,next,last) do {							 \
 	IA64_ACCOUNT_ON_SWITCH(prev, next);							 \
diff --git a/arch/ia64/include/asm/unistd.h b/arch/ia64/include/asm/unistd.h
index 10a8f21..bb8b0ff 100644
--- a/arch/ia64/include/asm/unistd.h
+++ b/arch/ia64/include/asm/unistd.h
@@ -335,20 +335,6 @@
 #define __ARCH_WANT_SYS_RT_SIGACTION
 #define __ARCH_WANT_SYS_RT_SIGSUSPEND
 
-#ifdef CONFIG_IA32_SUPPORT
-# define __ARCH_WANT_SYS_FADVISE64
-# define __ARCH_WANT_SYS_GETPGRP
-# define __ARCH_WANT_SYS_LLSEEK
-# define __ARCH_WANT_SYS_NICE
-# define __ARCH_WANT_SYS_OLD_GETRLIMIT
-# define __ARCH_WANT_SYS_OLDUMOUNT
-# define __ARCH_WANT_SYS_PAUSE
-# define __ARCH_WANT_SYS_SIGPENDING
-# define __ARCH_WANT_SYS_SIGPROCMASK
-# define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
-# define __ARCH_WANT_COMPAT_SYS_TIME
-#endif
-
 #if !defined(__ASSEMBLY__) && !defined(ASSEMBLER)
 
 #include <linux/types.h>