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authorRalf Baechle <ralf@linux-mips.org>2005-05-31 11:49:19 +0000
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 19:31:17 +0100
commite50c0a8fa60da9ac0e0a70caa8a3a803815c1f2f (patch)
tree1928e8b0a4b7fb615e5a9f65dc934ba2e74cb9cd /arch/mips/kernel/ptrace.c
parent10f650db1bcc193ea07d4f8c2f07315da38ea0c4 (diff)
downloadop-kernel-dev-e50c0a8fa60da9ac0e0a70caa8a3a803815c1f2f.zip
op-kernel-dev-e50c0a8fa60da9ac0e0a70caa8a3a803815c1f2f.tar.gz
Support the MIPS32 / MIPS64 DSP ASE.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/ptrace.c')
-rw-r--r--arch/mips/kernel/ptrace.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 49821ee..2441e32 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -30,6 +30,7 @@
#include <asm/byteorder.h>
#include <asm/cpu.h>
+#include <asm/dsp.h>
#include <asm/fpu.h>
#include <asm/mipsregs.h>
#include <asm/pgtable.h>
@@ -176,6 +177,27 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
write_c0_status(flags);
break;
}
+ case DSP_BASE ... DSP_BASE + 5:
+ if (!cpu_has_dsp) {
+ tmp = 0;
+ ret = -EIO;
+ goto out_tsk;
+ }
+ if (child->thread.dsp.used_dsp) {
+ dspreg_t *dregs = __get_dsp_regs(child);
+ tmp = (unsigned long) (dregs[addr - DSP_BASE]);
+ } else {
+ tmp = -1; /* DSP registers yet used */
+ }
+ break;
+ case DSP_CONTROL:
+ if (!cpu_has_dsp) {
+ tmp = 0;
+ ret = -EIO;
+ goto out_tsk;
+ }
+ tmp = child->thread.dsp.dspcontrol;
+ break;
default:
tmp = 0;
ret = -EIO;
@@ -248,6 +270,22 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
else
child->thread.fpu.soft.fcr31 = data;
break;
+ case DSP_BASE ... DSP_BASE + 5:
+ if (!cpu_has_dsp) {
+ ret = -EIO;
+ break;
+ }
+
+ dspreg_t *dregs = __get_dsp_regs(child);
+ dregs[addr - DSP_BASE] = data;
+ break;
+ case DSP_CONTROL:
+ if (!cpu_has_dsp) {
+ ret = -EIO;
+ break;
+ }
+ child->thread.dsp.dspcontrol = data;
+ break;
default:
/* The rest are not allowed. */
ret = -EIO;
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