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MN10300: Remove monitor/JTAG functions

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Remove the monitor trap function and the set_jtag_stub function as they're not
really necessary.

Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
Akira Takeuchi 2010-10-27 17:28:41 +01:00 committed by David Howells
parent 8fbbf7c76a
commit 86c0f935c1
4 changed files with 2 additions and 55 deletions
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5
arch/mn10300/include/asm/exceptions.h
View File

@ -15,8 +15,8 @@
/*
* define the breakpoint instruction opcode to use
* - note that the JTAG unit steals 0xFF, so we want to avoid that if we can
* (can use 0xF7)
* - note that the JTAG unit steals 0xFF, so you can't use JTAG and GDBSTUB at
* the same time.
*/
#define GDBSTUB_BKPT 0xFF
@ -90,7 +90,6 @@ enum exception_code {
extern void __set_intr_stub(enum exception_code code, void *handler);
extern void set_intr_stub(enum exception_code code, void *handler);
extern void set_jtag_stub(enum exception_code code, void *handler);
struct pt_regs;

25
arch/mn10300/kernel/entry.S
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@ -214,31 +214,6 @@ ENTRY(irq_handler)
jmp ret_from_intr
###############################################################################
#
# Monitor Signal handler entry point
#
###############################################################################
ENTRY(monitor_signal)
movbu (0xae000001),d1
cmp 1,d1
beq monsignal
ret [],0
monsignal:
or EPSW_NMID,epsw
mov d0,a0
mov a0,sp
mov (REG_EPSW,fp),d1
and ~EPSW_nSL,d1
mov d1,(REG_EPSW,fp)
movm (sp),[d2,d3,a2,a3,exreg0,exreg1,exother]
mov (sp),a1
mov a1,usp
movm (sp),[other]
add 4,sp
here: jmp 0x8e000008-here+0x8e000008
###############################################################################
#
# Double Fault handler entry point

22
arch/mn10300/kernel/traps.c
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@ -537,28 +537,6 @@ void __init set_intr_stub(enum exception_code code, void *handler)
mn10300_icache_inv();
}
/*
* set an interrupt stub to invoke the JTAG unit and then jump to a handler
*/
void __init set_jtag_stub(enum exception_code code, void *handler)
{
unsigned long addr;
u8 *vector = (u8 *)(CONFIG_INTERRUPT_VECTOR_BASE + code);
addr = (unsigned long) handler - ((unsigned long) vector + 1);
vector[0] = 0xff; /* PI to jump into JTAG debugger */
vector[1] = 0xdc; /* jmp handler */
vector[2] = addr;
vector[3] = addr >> 8;
vector[4] = addr >> 16;
vector[5] = addr >> 24;
vector[6] = 0xcb;
vector[7] = 0xcb;
mn10300_dcache_flush_inv();
flush_icache_range((unsigned long) vector, (unsigned long) vector + 8);
}
/*
* initialise the exception table
*/

5
arch/mn10300/mm/fault.c
View File

@ -100,8 +100,6 @@ static void print_pagetable_entries(pgd_t *pgdir, unsigned long address)
}
#endif
asmlinkage void monitor_signal(struct pt_regs *);
/*
* This routine handles page faults. It determines the address,
* and the problem, and then passes it off to one of the appropriate
@ -279,7 +277,6 @@ good_area:
*/
bad_area:
up_read(&mm->mmap_sem);
monitor_signal(regs);
/* User mode accesses just cause a SIGSEGV */
if ((fault_code & MMUFCR_xFC_ACCESS) == MMUFCR_xFC_ACCESS_USR) {
@ -292,7 +289,6 @@ bad_area:
}
no_context:
monitor_signal(regs);
/* Are we prepared to handle this kernel fault? */
if (fixup_exception(regs))
return;
@ -345,7 +341,6 @@ out_of_memory:
do_sigbus:
up_read(&mm->mmap_sem);
monitor_signal(regs);
/*
* Send a sigbus, regardless of whether we were in kernel