rune/libenclave/skeleton: Fix code style of sgxutils.c

Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

rune/libenclave/internal/runtime/pal/skeleton/sgx.h

@@ -10,8 +10,8 @@
 
 /**
  * enum sgx_epage_flags - page control flags
- * %SGX_PAGE_MEASURE:	Measure the page contents with a sequence of
- *			ENCLS[EEXTEND] operations.
+ * %SGX_PAGE_MEASURE:	Measure the page contents with a
+ * sequence of ENCLS[EEXTEND] operations.
  */
 enum sgx_page_flags {
 	SGX_PAGE_MEASURE	= 0x01,

rune/libenclave/internal/runtime/pal/skeleton/sgxutils.c

@@ -7,88 +7,84 @@ static inline void cpuid(int *eax, int *ebx, int *ecx, int *edx)
 {
 #if defined(__x86_64__)
 	asm volatile ("cpuid"
-		: "=a" (*eax),
-		"=b" (*ebx),
-		"=c" (*ecx),
-		"=d" (*edx)
-		: "0" (*eax), "2" (*ecx)
-		: "memory");
+		      : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
+		      : "0" (*eax), "2" (*ecx)
+		      : "memory");
 #else
-	/*on 32bit, ebx can NOT be used as PIC code*/
+	/* on 32bit, ebx can NOT be used as PIC code */
 	asm volatile ("xchgl %%ebx, %1; cpuid; xchgl %%ebx, %1"
-		: "=a" (*eax), "=r" (*ebx), "=c" (*ecx), "=d" (*edx)
-		: "0" (*eax), "2" (*ecx)
-		: "memory");
+		      : "=a" (*eax), "=r" (*ebx), "=c" (*ecx), "=d" (*edx)
+		      : "0" (*eax), "2" (*ecx)
+		      : "memory");
 #endif
 }
 
 static inline void __cpuid(int a[4], int b)
 {
-    a[0] = b;
-    a[2] = 0;
-    cpuid(&a[0], &a[1], &a[2], &a[3]);
+	a[0] = b;
+	a[2] = 0;
+	cpuid(&a[0], &a[1], &a[2], &a[3]);
 }
 
 static inline void __cpuidex(int a[4], int b, int c)
 {
-    a[0] = b;
-    a[2] = c;
-    cpuid(&a[0], &a[1], &a[2], &a[3]);
+	a[0] = b;
+	a[2] = c;
+	cpuid(&a[0], &a[1], &a[2], &a[3]);
 }
 
 static inline uint64_t xgetbv(uint32_t index)
 {
-    uint32_t eax, edx;
+	uint32_t eax, edx;
 
-    asm volatile(".byte 0x0f,0x01,0xd0" /* xgetbv */
-		: "=a" (eax), "=d" (edx)
-		: "c" (index));
+	asm volatile(".byte 0x0f,0x01,0xd0" /* xgetbv */
+		     : "=a" (eax), "=d" (edx)
+		     : "c" (index));
 
-    return eax + ((uint64_t)edx << 32);
+	return eax + ((uint64_t)edx << 32);
 }
 
 static inline uint64_t get_xcr0()
 {
-    return xgetbv(0);
+	return xgetbv(0);
 }
 
 static bool try_get_xcr0(uint64_t *value)
 {
-    int cpu_info[4] = {0, 0, 0, 0};
+	int cpu_info[4] = {0, 0, 0, 0};
 
-    *value = SGX_XFRM_LEGACY;
+	*value = SGX_XFRM_LEGACY;
 
-    // check if xgetbv instruction is supported
-    __cpuid(cpu_info, 1);
-    // ecx[27:26] indicate whether support xsave/xrstor, and whether enable xgetbv, xsetbv
-    if (!(cpu_info[2] & (1<<XSAVE_SHIFT)) || !(cpu_info[2] & (1<<OSXSAVE_SHIFT)))
-        return false;
+	// check if xgetbv instruction is supported
+	__cpuid(cpu_info, 1);
+	// ecx[27:26] indicate whether support xsave/xrstor, and whether enable xgetbv, xsetbv
+	if (!(cpu_info[2] & (1<<XSAVE_SHIFT)) || !(cpu_info[2] & (1<<OSXSAVE_SHIFT)))
+		return false;
 
-    *value = get_xcr0();
+	*value = get_xcr0();
 
-    // check if xsavec is supported
-    // Assume that XSAVEC is always supported if XSAVE is supported
-    cpu_info[0] = cpu_info[1] = cpu_info[2] = cpu_info[3] = 0;
-    __cpuidex(cpu_info, 0xD, 1);
-    if (!(cpu_info[0] & (1<<XSAVEC_SHIFT)))
-        return false;
+	// check if xsavec is supported
+	// Assume that XSAVEC is always supported if XSAVE is supported
+	cpu_info[0] = cpu_info[1] = cpu_info[2] = cpu_info[3] = 0;
+	__cpuidex(cpu_info, 0xD, 1);
+	if (!(cpu_info[0] & (1<<XSAVEC_SHIFT)))
+		return false;
 
-    return true;
+	return true;
 }
 
 void get_sgx_xfrm_by_cpuid(uint64_t *xfrm)
 {
-    int cpu_info[4] = {0, 0, 0, 0};
+	int cpu_info[4] = {0, 0, 0, 0};
 
-    __cpuidex(cpu_info, SGX_LEAF, 1);
+	__cpuidex(cpu_info, SGX_LEAF, 1);
 
-    if (false == try_get_xcr0(xfrm))
-    {
+	if (try_get_xcr0(xfrm) == false) {
 	// if XSAVE is supported, while XSAVEC is not supported,
 	// set xfrm to legacy, because XSAVEC cannot be executed within enclave.
-	*xfrm = SGX_XFRM_LEGACY;
-    } else {
+		*xfrm = SGX_XFRM_LEGACY;
+	} else {
 	// If x-feature is supported and enabled by OS, we need make sure it is also supported in enclave.
-	*xfrm &= (((uint64_t)cpu_info[3] << 32) | cpu_info[2]);
-    }
+		*xfrm &= (((uint64_t)cpu_info[3] << 32) | cpu_info[2]);
+	}
 }