More devtools stuff (#1637)

* devtools: memory map viewer

* devtools: batch highlight only for non-group viewer

* devtools: fix not showing entire user data

* devtools: shader debug viewer

* devtools: add more reg naming

src/core/devtools/widget/common.h

@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <filesystem>
 #include <string>
 #include <type_traits>
 #include <variant>
@@ -10,9 +11,16 @@
 #include <magic_enum.hpp>
 
 #include "common/bit_field.h"
+#include "common/io_file.h"
 #include "common/types.h"
+#include "core/debug_state.h"
 #include "video_core/amdgpu/pm4_opcodes.h"
 
+#if defined(_WIN32)
+#define popen _popen
+#define pclose _pclose
+#endif
+
 namespace Core::Devtools::Widget {
 /*
  * Generic PM4 header
@@ -106,4 +114,53 @@ static bool IsDrawCall(AmdGpu::PM4ItOpcode opcode) {
     }
 }
 
+inline std::optional<std::string> exec_cli(const char* cli) {
+    std::array<char, 64> buffer{};
+    std::string output;
+    const auto f = popen(cli, "r");
+    if (!f) {
+        pclose(f);
+        return {};
+    }
+    while (fgets(buffer.data(), buffer.size(), f)) {
+        output += buffer.data();
+    }
+    pclose(f);
+    return output;
+}
+
+inline std::string RunDisassembler(const std::string& disassembler_cli,
+                                   const std::vector<u32>& shader_code) {
+    std::string shader_dis;
+
+    if (disassembler_cli.empty()) {
+        shader_dis = "No disassembler set";
+    } else {
+        auto bin_path = std::filesystem::temp_directory_path() / "shadps4_tmp_shader.bin";
+
+        constexpr std::string_view src_arg = "{src}";
+        std::string cli = disassembler_cli;
+        const auto pos = cli.find(src_arg);
+        if (pos == std::string::npos) {
+            DebugState.ShowDebugMessage("Disassembler CLI does not contain {src} argument\n" +
+                                        disassembler_cli);
+        } else {
+            cli.replace(pos, src_arg.size(), "\"" + bin_path.string() + "\"");
+            Common::FS::IOFile file(bin_path, Common::FS::FileAccessMode::Write);
+            file.Write(shader_code);
+            file.Close();
+
+            auto result = exec_cli(cli.c_str());
+            shader_dis = result.value_or("Could not disassemble shader");
+            if (shader_dis.empty()) {
+                shader_dis = "Disassembly empty or failed";
+            }
+
+            std::filesystem::remove(bin_path);
+        }
+    }
+
+    return shader_dis;
+}
+
 } // namespace Core::Devtools::Widget