PPU LLVM: Reduce size of JIT-transition treampolines to 16

2025-01-22 11:15:55 +02:00
parent 6fc643f483
commit 4c0832e6e6
3 changed files with 153 additions and 4 deletions
@@ -147,6 +147,12 @@ static u8* add_jit_memory(usz size, usz align)
 		return pointer;
 	}

+	if (!size && align == 1)
+	{
+		// Return memory top address
+		return pointer + (Ctr.load() & 0xffff'ffff);
+	}
+
 	u64 olda, newa;

 	// Simple allocation by incrementing pointer to the next free data
@@ -273,6 +279,18 @@ u8* jit_runtime::alloc(usz size, usz align, bool exec) noexcept
 	}
 }

+u8* jit_runtime::peek(bool exec) noexcept
+{
+	if (exec)
+	{
+		return add_jit_memory<s_code_pos, 0x0, utils::protection::wx>(0, 1);
+	}
+	else
+	{
+		return add_jit_memory<s_data_pos, 0x40000000, utils::protection::rw>(0, 1);
+	}
+}
+
 void jit_runtime::initialize()
 {
 	if (!s_code_init.empty() || !s_data_init.empty())