From cb3a86c89ebdf917b88665f70e06863986fbab5c Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Fri, 8 May 2009 17:25:35 +0900
Subject: sh: Kill off sh64's hand-rolled syscall tracer.

This is no longer necessary, as there are now sufficient generic
alternatives available.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
 arch/sh/lib64/.gitignore |   1 -
 arch/sh/lib64/dbg.c      | 134 -----------------------------------------------
 2 files changed, 135 deletions(-)
 delete mode 100644 arch/sh/lib64/.gitignore

(limited to 'arch/sh/lib64')

diff --git a/arch/sh/lib64/.gitignore b/arch/sh/lib64/.gitignore
deleted file mode 100644
index 3508c2cb23c4..000000000000
--- a/arch/sh/lib64/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-syscalltab.h
diff --git a/arch/sh/lib64/dbg.c b/arch/sh/lib64/dbg.c
index 2fb8eaf6de60..25f2481bd89e 100644
--- a/arch/sh/lib64/dbg.c
+++ b/arch/sh/lib64/dbg.c
@@ -135,140 +135,6 @@ void print_itlb(void)
 	    (" =============================================================\n");
 }
 
-/* ======================================================================= */
-
-#ifdef CONFIG_POOR_MANS_STRACE
-
-#include "syscalltab.h"
-
-struct ring_node {
-	int evt;
-	int ret_addr;
-	int event;
-	int tra;
-	int pid;
-	unsigned long sp;
-	unsigned long pc;
-};
-
-static struct ring_node event_ring[16];
-static int event_ptr = 0;
-
-struct stored_syscall_data {
-	int pid;
-	int syscall_number;
-};
-
-#define N_STORED_SYSCALLS 16
-
-static struct stored_syscall_data stored_syscalls[N_STORED_SYSCALLS];
-static int syscall_next=0;
-static int syscall_next_print=0;
-
-void evt_debug(int evt, int ret_addr, int event, int tra, struct pt_regs *regs)
-{
-	int syscallno = tra & 0xff;
-	unsigned long sp;
-	unsigned long stack_bottom;
-	int pid;
-	struct ring_node *rr;
-
-	pid = current->pid;
-	stack_bottom = (unsigned long) task_stack_page(current);
-	asm volatile("ori r15, 0, %0" : "=r" (sp));
-	rr = event_ring + event_ptr;
-	rr->evt = evt;
-	rr->ret_addr = ret_addr;
-	rr->event = event;
-	rr->tra = tra;
-	rr->pid = pid;
-	rr->sp = sp;
-	rr->pc = regs->pc;
-
-	if (sp < stack_bottom + 3092) {
-		int i, j;
-		printk("evt_debug : stack underflow report\n");
-		for (j=0, i = event_ptr; j<16; j++) {
-			rr = event_ring + i;
-			printk("evt=%08x event=%08x tra=%08x pid=%5d sp=%08lx pc=%08lx\n",
-				rr->evt, rr->event, rr->tra, rr->pid, rr->sp, rr->pc);
-			i--;
-			i &= 15;
-		}
-		panic("STACK UNDERFLOW\n");
-	}
-
-	event_ptr = (event_ptr + 1) & 15;
-
-	if ((event == 2) && (evt == 0x160)) {
-		if (syscallno < NUM_SYSCALL_INFO_ENTRIES) {
-			/* Store the syscall information to print later.  We
-			 * can't print this now - currently we're running with
-			 * SR.BL=1, so we can't take a tlbmiss (which could occur
-			 * in the console drivers under printk).
-			 *
-			 * Just overwrite old entries on ring overflow - this
-			 * is only for last-hope debugging. */
-			stored_syscalls[syscall_next].pid = current->pid;
-			stored_syscalls[syscall_next].syscall_number = syscallno;
-			syscall_next++;
-			syscall_next &= (N_STORED_SYSCALLS - 1);
-		}
-	}
-}
-
-static void drain_syscalls(void) {
-	while (syscall_next_print != syscall_next) {
-		printk("Task %d: %s()\n",
-			stored_syscalls[syscall_next_print].pid,
-			syscall_info_table[stored_syscalls[syscall_next_print].syscall_number].name);
-			syscall_next_print++;
-			syscall_next_print &= (N_STORED_SYSCALLS - 1);
-	}
-}
-
-void evt_debug2(unsigned int ret)
-{
-	drain_syscalls();
-	printk("Task %d: syscall returns %08x\n", current->pid, ret);
-}
-
-void evt_debug_ret_from_irq(struct pt_regs *regs)
-{
-	int pid;
-	struct ring_node *rr;
-
-	pid = current->pid;
-	rr = event_ring + event_ptr;
-	rr->evt = 0xffff;
-	rr->ret_addr = 0;
-	rr->event = 0;
-	rr->tra = 0;
-	rr->pid = pid;
-	rr->pc = regs->pc;
-	event_ptr = (event_ptr + 1) & 15;
-}
-
-void evt_debug_ret_from_exc(struct pt_regs *regs)
-{
-	int pid;
-	struct ring_node *rr;
-
-	pid = current->pid;
-	rr = event_ring + event_ptr;
-	rr->evt = 0xfffe;
-	rr->ret_addr = 0;
-	rr->event = 0;
-	rr->tra = 0;
-	rr->pid = pid;
-	rr->pc = regs->pc;
-	event_ptr = (event_ptr + 1) & 15;
-}
-
-#endif /* CONFIG_POOR_MANS_STRACE */
-
-/* ======================================================================= */
-
 void show_excp_regs(char *from, int trapnr, int signr, struct pt_regs *regs)
 {
 
-- 
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