X-Git-Url: https://git.wh0rd.org/?p=ICEs.git;a=blobdiff_plain;f=388835%2Faesni-intel_glue.i.9;fp=388835%2Faesni-intel_glue.i.9;h=0f7f07c5458fccfd7c32cef294ae718bdcd7fdf3;hp=0000000000000000000000000000000000000000;hb=bd3239d2bbe0de3a200b266503e3330b1e391489;hpb=dbff64cb4b7530861c2309c794efdd4e0cf47a23

diff --git a/388835/aesni-intel_glue.i.9 b/388835/aesni-intel_glue.i.9
new file mode 100644
index 0000000..0f7f07c
--- /dev/null
+++ b/388835/aesni-intel_glue.i.9
@@ -0,0 +1,155 @@
+struct list_head {
+};
+int __static_cpu_has(unsigned short bit)
+{
+	asm goto ("1: jmp %l[t_no]\n" "2:\n" ".section .altinstructions,\"a\"\n"
+		  " " ".balign 4" " " "\n" " " ".long" " " "1b\n" " " ".long"
+		  " " "0\n" " .word %P0\n" " .byte 2b - 1b\n" " .byte 0\n"
+		  ".previous\n"::"i" (bit)::t_no);
+	return 1;
+      t_no:return 0;
+}
+
+struct cpuinfo_x86 {
+	unsigned int x86_capability[10];
+} __attribute__ ((__aligned__((1 << (6)))));
+extern struct cpuinfo_x86 boot_cpu_data;
+struct i387_fxsave_struct {
+	unsigned short swd;
+} __attribute__ ((aligned(16)));
+struct xsave_hdr_struct {
+	unsigned long long xstate_bv;
+} __attribute__ ((packed));
+struct xsave_struct {
+	struct xsave_hdr_struct xsave_hdr;
+} __attribute__ ((packed, aligned(64)));
+union thread_xstate {
+	struct i387_fxsave_struct fxsave;
+	struct xsave_struct xsave;
+};
+struct fpu {
+	union thread_xstate *state;
+};
+struct crypto_alg {
+	struct list_head cra_list;
+	void (*cia_decrypt) (void);
+};
+static __attribute__ ((always_inline)) __attribute__ ((pure))
+int use_xsave(void)
+{
+	return
+	    __builtin_constant_p(constant_test_bit
+				 (boot_cpu_data.x86_capability)) ?
+	    constant_test_bit(
+boot_cpu_data.x86_capability
+) :
+	    __static_cpu_has(154);
+}
+
+static inline __attribute__ ((always_inline)) __attribute__ ((always_inline))
+    __attribute__ ((pure))
+int use_fxsr(void)
+{
+	return
+	    __builtin_constant_p(variable_test_bit
+				 (24,
+				  (unsigned long *)((&boot_cpu_data)->
+						    x86_capability))) ?
+	    variable_test_bit(24,
+			      (unsigned long *)((&boot_cpu_data)->
+						x86_capability)) :
+	    __static_cpu_has(24);
+}
+
+static inline __attribute__ ((always_inline))
+void fpu_save_init(struct fpu *fpu)
+{
+	if (__builtin_constant_p(use_xsave())? use_xsave() : use_xsave()) {
+		if (__builtin_constant_p
+		    (((!(fpu->state->xsave.xsave_hdr.
+			 xstate_bv & 0x1)))) ? ! !((!(fpu->state->xsave.
+						      xsave_hdr.
+						      xstate_bv & 0x1))) : ( {
+									    ! !((!(fpu->state->xsave.xsave_hdr.xstate_bv & 0x1)));}
+		    ))
+			return;
+	} else if (use_fxsr()) {
+	}
+	if (__builtin_constant_p
+	    ((((__builtin_constant_p(fpu->state->fxsave.swd & (1 << 7)) ?
+		! !(fpu->state->fxsave.swd & (1 << 7)) : ( {
+							  __builtin_expect(! !
+									   (fpu->
+									    state->
+									    fxsave.
+									    swd
+									    & (1
+									       <<
+									       7)),
+									   1);}
+		)))))?
+	    ! !(((__builtin_constant_p(fpu->state->fxsave.swd & (1 << 7)) ?
+		  ! !(fpu->state->fxsave.swd & (1 << 7)) : ( {
+							    __builtin_expect(! !
+									     (fpu->
+									      state->
+									      fxsave.
+									      swd
+									      &
+									      (1
+									       <<
+									       7)),
+									     1);}
+      )))):	  ( {
+		   int ______r;
+		   ______r =
+		   ! !(((__builtin_constant_p(fpu->state->fxsave.swd & (1 << 7))
+			 ? ! !(fpu->state->fxsave.swd & (1 << 7)) : ( {
+								     ______r =
+								     __builtin_expect
+								     (! !
+								      (fpu->
+								       state->
+								       fxsave.
+								       swd & (1
+									      <<
+									      7)),
+								      1);}
+			 ))));}
+	    ))
+		asm volatile ("fnclex");
+}
+
+static __attribute__ ((always_inline))
+void __save_init_fpu(void)
+{
+	fpu_save_init(0);
+}
+
+static __attribute__ ((always_inline))
+void kernel_fpu_begin(void)
+{
+	__save_init_fpu();
+}
+
+static void aes_decrypt(void)
+{
+	if (!irq_fpu_usable())
+		crypto_aes_decrypt_x86(0);
+	else
+		kernel_fpu_begin();
+}
+
+static struct crypto_alg aesni_alg = {
+	.cra_list = { &aesni_alg.cra_list },
+	.cia_decrypt = aes_decrypt
+};
+
+static struct crypto_alg ablk_ecb_alg = {
+};
+
+int aesni_init(void)
+{
+	if (! !crypto_register_alg(&aesni_alg))
+		crypto_unregister_alg(&ablk_ecb_alg);
+}