Use a x86_64-unknown-uefi-drv target

This is currently identical to the output of
`rustc -Z unstable-options --print target-spec-json --target x86_64-unknown-uefi`
except with changes to `pre-link-args`.

Author: ids1024

Makefile

@@ -1,4 +1,4 @@
-TARGET?=x86_64-uefi-pe
+TARGET?=x86_64-unknown-uefi-drv
 
 export LD=ld
 export RUST_TARGET_PATH=$(CURDIR)/targets

firmware-setup.inf

@@ -14,5 +14,5 @@
   VALID_ARCHITECTURES           = X64
 
 [Binaries.X64]
-  PE32|build/x86_64-uefi-pe/boot.efi|*
+  PE32|build/x86_64-unknown-uefi-drv/boot.efi|*
 

targets/x86_64-uefi-pe.json

@@ -0,0 +1,40 @@
+{
+  "abi-return-struct-as-int": true,
+  "allows-weak-linkage": false,
+  "arch": "x86_64",
+  "code-model": "large",
+  "cpu": "x86-64",
+  "data-layout": "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128",
+  "disable-redzone": true,
+  "emit-debug-gdb-scripts": false,
+  "env": "",
+  "exe-suffix": ".efi",
+  "executables": true,
+  "features": "-mmx,-sse,+soft-float",
+  "is-builtin": true,
+  "linker": "rust-lld",
+  "linker-flavor": "lld-link",
+  "lld-flavor": "link",
+  "llvm-target": "x86_64-unknown-windows",
+  "max-atomic-width": 64,
+  "os": "uefi",
+  "panic-strategy": "abort",
+  "pre-link-args": {
+    "lld-link": [
+      "/entry:_start",
+      "/heap:0,0",
+      "/stack:0,0",
+      "/dll",
+      "/base:0",
+      "/align:32",
+      "/filealign:32",
+      "/subsystem:efi_boot_service_driver"
+    ]
+  },
+  "singlethread": true,
+  "stack-probes": true,
+  "target-c-int-width": "32",
+  "target-endian": "little",
+  "target-pointer-width": "64",
+  "vendor": "unknown"
+}