git subrepo pull (merge) --force deps/lightning

[pcsx_rearmed.git] / deps / lightning / include / lightning / jit_riscv.h

diff --git a/deps/lightning/include/lightning/jit_riscv.h b/deps/lightning/include/lightning/jit_riscv.h
index bf59c5b..652e42e 100644 (file)
--- a/deps/lightning/include/lightning/jit_riscv.h
+++ b/deps/lightning/include/lightning/jit_riscv.h
@@ -144,4 +144,24 @@ typedef enum {
 #define JIT_NOREG              _NOREG
 } jit_reg_t;
 
+typedef struct {
+    /* generate special instructions for unaligned load/store? */
+    /*
+     * For best performance, the effective address for all loads and stores
+     * should be naturally aligned for each data type (i.e., on a four-byte
+     * boundary for 32-bit accesses, and a two-byte boundary for 16-bit
+     * accesses). The base ISA supports misaligned accesses, but these might
+     * run extremely slowly depending on the implementation. Furthermore,
+     * naturally aligned loads and stores are guaranteed to execute atomically,
+     * whereas misaligned loads and stores might not, and hence require
+     * additional synchronization to ensure atomicity
+     */
+    jit_uint32_t unaligned     : 1;
+} jit_cpu_t;
+
+/*
+ * Initialization
+ */
+extern jit_cpu_t               jit_cpu;
+
 #endif /* _jit_riscv_h */