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Blackfin: initial XIP support

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Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Barry Song
2010-01-07 04:11:17 +00:00
committed by Mike Frysinger
parent aad16f3228
commit d86bfb1600
13 changed files with 160 additions and 29 deletions
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17
arch/blackfin/mach-common/entry.S
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@@ -405,7 +405,7 @@ ENTRY(_double_fault)
r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
SP += -12;
call _double_fault_c;
pseudo_long_call _double_fault_c, p5;
SP += 12;
.L_double_fault_panic:
JUMP .L_double_fault_panic
@@ -447,7 +447,7 @@ ENTRY(_exception_to_level5)
r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */
SP += -12;
call _trap_c;
pseudo_long_call _trap_c, p4;
SP += 12;
/* If interrupts were off during the exception (IPEND[4] = 1), turn them off
@@ -551,7 +551,7 @@ ENTRY(_kernel_execve)
p0 = sp;
sp += -16;
[sp + 12] = p0;
call _do_execve;
pseudo_long_call _do_execve, p5;
SP += 16;
cc = r0 == 0;
if ! cc jump .Lexecve_failed;
@@ -704,7 +704,7 @@ ENTRY(_system_call)
sp += 4;
SP += -12;
call _schedule;
pseudo_long_call _schedule, p4;
SP += 12;
jump .Lresume_userspace_1;
@@ -723,7 +723,7 @@ ENTRY(_system_call)
r0 = sp;
SP += -12;
call _do_notify_resume;
pseudo_long_call _do_notify_resume, p5;
SP += 12;
.Lsyscall_really_exit:
@@ -736,7 +736,7 @@ ENDPROC(_system_call)
* this symbol need not be global anyways, so ...
*/
_sys_trace:
call _syscall_trace;
pseudo_long_call _syscall_trace, p5;
/* Execute the appropriate system call */
@@ -760,7 +760,7 @@ _sys_trace:
SP += 24;
[sp + PT_R0] = r0;
call _syscall_trace;
pseudo_long_call _syscall_trace, p5;
jump .Lresume_userspace;
ENDPROC(_sys_trace)
@@ -1007,7 +1007,8 @@ ENTRY(_schedule_and_signal_from_int)
r0 = sp;
sp += -12;
call _finish_atomic_sections;
pseudo_long_call _finish_atomic_sections, p5;
sp += 12;
jump.s .Lresume_userspace;
ENDPROC(_schedule_and_signal_from_int)