2002-10-29 23:50:15

by Brian Gerst

[permalink] [raw]
Subject: [PATCH] make x86 ptrace use init_fpu()

diff -urN linux-2.5.44-bk3/arch/i386/kernel/ptrace.c linux/arch/i386/kernel/ptrace.c
--- linux-2.5.44-bk3/arch/i386/kernel/ptrace.c Sun Sep 15 22:18:24 2002
+++ linux/arch/i386/kernel/ptrace.c Tue Oct 29 17:04:59 2002
@@ -375,12 +375,8 @@
break;
}
ret = 0;
- if ( !child->used_math ) {
- /* Simulate an empty FPU. */
- set_fpu_cwd(child, 0x037f);
- set_fpu_swd(child, 0x0000);
- set_fpu_twd(child, 0xffff);
- }
+ if (!child->used_math)
+ init_fpu(child);
get_fpregs((struct user_i387_struct *)data, child);
break;
}
@@ -403,13 +399,8 @@
ret = -EIO;
break;
}
- if ( !child->used_math ) {
- /* Simulate an empty FPU. */
- set_fpu_cwd(child, 0x037f);
- set_fpu_swd(child, 0x0000);
- set_fpu_twd(child, 0xffff);
- set_fpu_mxcsr(child, 0x1f80);
- }
+ if (!child->used_math)
+ init_fpu(child);
ret = get_fpxregs((struct user_fxsr_struct *)data, child);
break;
}


Attachments:
ptrace-fpu-1 (921.00 B)