Squash commits for public release

2025-02-12 09:54:05 -05:00
commit 7118adc514
1108 changed files with 80873 additions and 0 deletions
--- a/kernel/include/platform/arm64/registers.h
+++ b/kernel/include/platform/arm64/registers.h
@@ -0,0 +1,63 @@
+{
+    uint64_t el;
+    asm volatile("mrs %x0, CurrentEL"
+                 : "=r"(el)
+                 :);
+    return el >> 2;
+}
+
+static inline uint64_t read_sp()
+{
+    uint64_t sp;
+    asm volatile("mov %x0, sp"
+                 : "=r"(sp)
+                 :);
+    return sp;
+}
+
+static inline uint64_t read_fp()
+{
+    uint64_t fp;
+    asm volatile("mov %x0, x29"
+                 : "=r"(fp)
+                 :);
+    return fp;
+}
+
+static inline uint64_t read_cbar()
+{
+    uint32_t val;
+    asm volatile("mrs %x0, S3_1_C15_C3_0"
+                 : "=r"(val)
+                 :);
+    return val;
+}
+
+static inline uint64_t read_cpacr()
+{
+    uint64_t cpacr;
+    asm volatile("mrs %x0, CPACR_EL1"
+                 : "=r"(cpacr)
+                 :);
+    return cpacr;
+}
+
+static inline void write_cpacr(uint64_t val)
+{
+    asm volatile("msr CPACR_EL1, %x0"
+                 :
+                 : "r"(val)
+                 : "memory");
+    asm volatile("isb");
+}
+
+static inline void write_tpidr(uint64_t val)
+{
+    asm volatile("msr TPIDR_EL1, %x0"
+                 :
+                 : "r"(val)
+                 : "memory");
+    asm volatile("isb");
+}
+
+#endif /* _KERNEL_PLATFORM_ARM64_REGISTERS_H */