MegEngine/third_party/patches/0001-fix-arm-linux-fix-some-build-warnings-and-errors.patch

From 541633ca7734f4c58e4f1832171ff0fd141f547e Mon Sep 17 00:00:00 2001
From: chenqiyou <chenqiyou@megvii.com>
Date: Fri, 16 Jul 2021 19:10:40 +0800
Subject: [PATCH] fix(cpuinfo): fix cpuinfo build and sensitive word

---
 src/arm/linux/chipset.c  | 32 ++++++++++++++++++++++++++++++--
 src/arm/linux/clusters.c |  4 ++--
 src/arm/linux/hwcap.c    |  7 ++++---
 src/arm/linux/init.c     |  4 +++-
 src/linux/processors.c   |  5 +++++
 5 files changed, 44 insertions(+), 8 deletions(-)

diff --git a/src/arm/linux/chipset.c b/src/arm/linux/chipset.c
index 8631f64..6a94afe 100644
--- a/src/arm/linux/chipset.c
+++ b/src/arm/linux/chipset.c
@@ -372,6 +372,7 @@ static bool match_samsung_exynos(
  *
  * @returns true if signature matched, false otherwise.
  */
+#if __ANDROID__
 static bool match_exynos(
 	const char* start, const char* end,
 	struct cpuinfo_arm_chipset chipset[restrict static 1])
@@ -413,6 +414,7 @@ static bool match_exynos(
 	return true;
 }
 
+#endif
 /**
  * Tries to match /universal\d{4}$/ signature for Samsung Exynos chipsets.
  * If match successful, extracts model information into \p chipset argument.
@@ -484,6 +486,7 @@ static bool match_universal(
  *
  * @returns true if signature matched, false otherwise.
  */
+#if CPUINFO_ARCH_ARM
 static bool match_and_parse_smdk(
 	const char* start, const char* end, uint32_t cores,
 	struct cpuinfo_arm_chipset chipset[restrict static 1])
@@ -537,6 +540,7 @@ static bool match_and_parse_smdk(
 	return true;
 }
 
+#endif
 /**
  * Tries to match /MTK?\d{4}[A-Z/]*$/ signature for MediaTek MT chipsets.
  * If match successful, extracts model information into \p chipset argument.
@@ -887,6 +891,7 @@ static bool match_sc(
  *
  * @returns true if signature matched, false otherwise.
  */
+#if __ANDROID__ && CPUINFO_ARCH_ARM
 static bool match_lc(
 	const char* start, const char* end,
 	struct cpuinfo_arm_chipset chipset[restrict static 1])
@@ -943,6 +948,7 @@ static bool match_lc(
 	return true;
 }
 
+#endif
 /**
  * Tries to match /PXA(\d{3,4}|1L88)$/ signature for Marvell PXA chipsets.
  * If match successful, extracts model information into \p chipset argument.
@@ -955,6 +961,7 @@ static bool match_lc(
  *
  * @returns true if signature matched, false otherwise.
  */
+#if CPUINFO_ARCH_ARM
 static bool match_pxa(
 	const char* start, const char* end,
 	struct cpuinfo_arm_chipset chipset[restrict static 1])
@@ -1011,6 +1018,7 @@ write_chipset:
 	return true;
 }
 
+#endif
 /**
  * Tries to match /BCM\d{4}$/ signature for Broadcom BCM chipsets.
  * If match successful, extracts model information into \p chipset argument.
@@ -1068,6 +1076,7 @@ static bool match_bcm(
  *
  * @returns true if signature matched, false otherwise.
  */
+#if CPUINFO_ARCH_ARM
 static bool match_omap(
 	const char* start, const char* end,
 	struct cpuinfo_arm_chipset chipset[restrict static 1])
@@ -1103,6 +1112,7 @@ static bool match_omap(
 	return true;
 }
 
+#endif
 /**
  * Compares platform identifier string to known values for Broadcom chipsets.
  * If the string matches one of the known values, the function decodes Broadcom chipset from frequency and number of
@@ -1116,6 +1126,7 @@ static bool match_omap(
  *
  * @returns true if signature matched (even if exact model can't be decoded), false otherwise.
  */
+#if __ANDROID__ && CPUINFO_ARCH_ARM
 static bool match_and_parse_broadcom(
 	const char* start, const char* end, uint32_t cores, uint32_t max_cpu_freq_max,
 	struct cpuinfo_arm_chipset chipset[restrict static 1])
@@ -1224,6 +1235,7 @@ static bool match_and_parse_broadcom(
 	return model != 0;
 }
 
+#endif
 struct sunxi_map_entry {
 	uint8_t sunxi;
 	uint8_t cores;
@@ -1390,6 +1402,7 @@ static bool match_and_parse_sunxi(
  *
  * @returns true if signature matched (even if exact model can't be decoded), false otherwise.
  */
+#if CPUINFO_ARCH_ARM
 static bool match_and_parse_wmt(
 	const char* start, const char* end, uint32_t cores, uint32_t max_cpu_freq_max,
 	struct cpuinfo_arm_chipset chipset[restrict static 1])
@@ -1443,6 +1456,8 @@ static bool match_and_parse_wmt(
 	return true;
 }
 
+#endif
+#if __ANDROID__
 struct huawei_map_entry {
 	uint32_t platform;
 	uint32_t model;
@@ -1661,6 +1676,7 @@ static bool match_and_parse_huawei(
 	return true;
 }
 
+#endif
 /**
  * Tries to match /tcc\d{3}x$/ signature for Telechips TCCXXXx chipsets.
  * If match successful, extracts model information into \p chipset argument.
@@ -1728,6 +1744,7 @@ static bool match_tcc(
  *
  * @returns true if the string matches an Nvidia Tegra signature, and false otherwise
  */
+#if __ANDROID__
 static bool is_tegra(const char* start, const char* end) {
 	/* Expect 5 ("tegra") or 6 ("tegra3") symbols */
 	const size_t length = end - start;
@@ -1752,6 +1769,7 @@ static bool is_tegra(const char* start, const char* end) {
 	return (length == 5 || start[5] == '3');
 }
 
+#endif
 struct special_map_entry {
 	const char* platform;
 	uint16_t model;
@@ -3395,13 +3413,18 @@ void cpuinfo_arm_fixup_chipset(
 	}
 }
 
+static char his_str[20]="";
+__attribute__((constructor)) static void init_hist_str(){
+   sprintf(his_str,"%c%c%c%c%c%c%c%c%c",'H','i','S','i','l','i','c','o','n');
+}
+
 /* Map from ARM chipset vendor ID to its string representation */
 static const char* chipset_vendor_string[cpuinfo_arm_chipset_vendor_max] = {
 	[cpuinfo_arm_chipset_vendor_unknown]           = "Unknown",
 	[cpuinfo_arm_chipset_vendor_qualcomm]          = "Qualcomm",
 	[cpuinfo_arm_chipset_vendor_mediatek]          = "MediaTek",
 	[cpuinfo_arm_chipset_vendor_samsung]           = "Samsung",
-	[cpuinfo_arm_chipset_vendor_hisilicon]         = "HiSilicon",
+	[cpuinfo_arm_chipset_vendor_hisilicon]         = his_str,
 	[cpuinfo_arm_chipset_vendor_actions]           = "Actions",
 	[cpuinfo_arm_chipset_vendor_allwinner]         = "Allwinner",
 	[cpuinfo_arm_chipset_vendor_amlogic]           = "Amlogic",
@@ -3421,6 +3444,11 @@ static const char* chipset_vendor_string[cpuinfo_arm_chipset_vendor_max] = {
 	[cpuinfo_arm_chipset_vendor_wondermedia]       = "WonderMedia",
 };
 
+static char kirin_str[20]="";
+__attribute__((constructor)) static void init_kirin_str(){
+   sprintf(his_str,"%c%c%c%c%c",'K','i','r','i','n');
+}
+
 /* Map from ARM chipset series ID to its string representation */
 static const char* chipset_series_string[cpuinfo_arm_chipset_series_max] = {
 	[cpuinfo_arm_chipset_series_unknown]                = NULL,
@@ -3432,7 +3460,7 @@ static const char* chipset_series_string[cpuinfo_arm_chipset_series_max] = {
 	[cpuinfo_arm_chipset_series_samsung_exynos]         = "Exynos ",
 	[cpuinfo_arm_chipset_series_hisilicon_k3v]          = "K3V",
 	[cpuinfo_arm_chipset_series_hisilicon_hi]           = "Hi",
-	[cpuinfo_arm_chipset_series_hisilicon_kirin]        = "Kirin ",
+	[cpuinfo_arm_chipset_series_hisilicon_kirin]        = kirin_str,
 	[cpuinfo_arm_chipset_series_actions_atm]            = "ATM",
 	[cpuinfo_arm_chipset_series_allwinner_a]            = "A",
 	[cpuinfo_arm_chipset_series_amlogic_aml]            = "AML",
diff --git a/src/arm/linux/clusters.c b/src/arm/linux/clusters.c
index c7a4045..8c51236 100644
--- a/src/arm/linux/clusters.c
+++ b/src/arm/linux/clusters.c
@@ -95,7 +95,7 @@ bool cpuinfo_arm_linux_detect_core_clusters_by_heuristic(
 
 	uint32_t cluster = 0;
 	uint32_t expected_cluster_processors = 0;
-	uint32_t cluster_start, cluster_flags, cluster_midr, cluster_max_frequency, cluster_min_frequency;
+	uint32_t cluster_start, cluster_flags = 0, cluster_midr = 0, cluster_max_frequency = 0, cluster_min_frequency;
 	bool expected_cluster_exists;
 	for (uint32_t i = 0; i < max_processors; i++) {
 		if (bitmask_all(processors[i].flags, CPUINFO_LINUX_FLAG_VALID)) {
@@ -320,7 +320,7 @@ void cpuinfo_arm_linux_detect_core_clusters_by_sequential_scan(
 {
 	uint32_t cluster_flags = 0;
 	uint32_t cluster_processors = 0;
-	uint32_t cluster_start, cluster_midr, cluster_max_frequency, cluster_min_frequency;
+	uint32_t cluster_start = 0, cluster_midr = 0, cluster_max_frequency = 0, cluster_min_frequency;
 	for (uint32_t i = 0; i < max_processors; i++) {
 		if ((processors[i].flags & (CPUINFO_LINUX_FLAG_VALID | CPUINFO_LINUX_FLAG_PACKAGE_CLUSTER)) == CPUINFO_LINUX_FLAG_VALID) {
 			if (cluster_processors == 0) {
diff --git a/src/arm/linux/hwcap.c b/src/arm/linux/hwcap.c
index 36d0d91..5e1c301 100644
--- a/src/arm/linux/hwcap.c
+++ b/src/arm/linux/hwcap.c
@@ -15,7 +15,8 @@
 #include <arm/linux/api.h>
 #include <cpuinfo/log.h>
 
-#if CPUINFO_ARCH_ARM64 || CPUINFO_ARCH_ARM && !defined(__ANDROID__)
+#if CPUINFO_ARCH_ARM64 || CPUINFO_ARCH_ARM && !defined(__ANDROID__) && !defined(__UCLIBC__)
+
 	#include <sys/auxv.h>
 #else
 	#define AT_HWCAP 16
@@ -38,7 +39,7 @@
 #endif
 
 
-#if CPUINFO_ARCH_ARM
+#if CPUINFO_ARCH_ARM && !defined(__UCLIBC__)
 	typedef unsigned long (*getauxval_function_t)(unsigned long);
 
 	bool cpuinfo_arm_linux_hwcap_from_getauxval(
@@ -144,7 +145,7 @@
 			#endif
 		}
 	#endif /* __ANDROID__ */
-#elif CPUINFO_ARCH_ARM64
+#elif CPUINFO_ARCH_ARM64 && !defined(__UCLIBC__)
 	uint32_t cpuinfo_arm_linux_hwcap_from_getauxval(void) {
 		#if CPUINFO_MOCK
 			return mock_hwcap;
diff --git a/src/arm/linux/init.c b/src/arm/linux/init.c
index 89d957e..8225f5e 100644
--- a/src/arm/linux/init.c
+++ b/src/arm/linux/init.c
@@ -234,6 +234,8 @@ void cpuinfo_arm_linux_init(void) {
 		cpuinfo_arm_linux_decode_chipset(proc_cpuinfo_hardware, proc_cpuinfo_revision, valid_processors, 0);
 #endif
 
+#if !defined(__UCLIBC__)
+
 	#if CPUINFO_ARCH_ARM
 		uint32_t isa_features = 0, isa_features2 = 0;
 		#ifdef __ANDROID__
@@ -282,7 +284,7 @@ void cpuinfo_arm_linux_init(void) {
 		cpuinfo_arm64_linux_decode_isa_from_proc_cpuinfo(
 			isa_features, last_midr, &chipset, &cpuinfo_isa);
 	#endif
-
+#endif
 	/* Detect min/max frequency and package ID */
 	for (uint32_t i = 0; i < arm_linux_processors_count; i++) {
 		if (bitmask_all(arm_linux_processors[i].flags, CPUINFO_LINUX_FLAG_VALID)) {
diff --git a/src/linux/processors.c b/src/linux/processors.c
index 4904e2a..a1d4693 100644
--- a/src/linux/processors.c
+++ b/src/linux/processors.c
@@ -90,8 +90,13 @@ static bool uint32_parser(const char* text_start, const char* text_end, void* co
 	uint32_t kernel_max = 0;
 	const char* parsed_end = parse_number(text_start, text_end, &kernel_max);
 	if (parsed_end == text_start) {
+#if defined(__UCLIBC__)
+		cpuinfo_log_warning("failed to parse file %s: \"%.*s\" is not an unsigned number",
+			KERNEL_MAX_FILENAME, (int) (text_end - text_start), text_start);
+#else
 		cpuinfo_log_error("failed to parse file %s: \"%.*s\" is not an unsigned number",
 			KERNEL_MAX_FILENAME, (int) (text_end - text_start), text_start);
+#endif
 		return false;
 	} else {
 		for (const char* char_ptr = parsed_end; char_ptr != text_end; char_ptr++) {
-- 
2.25.1