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Correctly pad the stack when doing uefi calls

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Related: rhbz#677468
Add ability to write UEFI callbacks and drivers
Add test harness for ABI Calling Conventions
This commit is contained in:
Peter Jones 2011-08-11 10:43:57 -04:00
parent 823cebc081
commit 50f718a229
6 changed files with 996 additions and 290 deletions
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289
gnu-efi-3.0d-unwrap.patch
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@ -1,289 +0,0 @@
diff -up gnu-efi-3.0d/inc/ia32/pe.h.unwrap gnu-efi-3.0d/inc/ia32/pe.h
--- gnu-efi-3.0d/inc/ia32/pe.h.unwrap 2008-03-10 14:38:18.000000000 -0400
+++ gnu-efi-3.0d/inc/ia32/pe.h 2008-03-10 14:39:21.000000000 -0400
@@ -588,4 +588,6 @@ typedef struct _IMAGE_IMPORT_DESCRIPTOR
PIMAGE_THUNK_DATA FirstThunk;
} IMAGE_IMPORT_DESCRIPTOR, *PIMAGE_IMPORT_DESCRIPTOR;
+#define EFI_CALL(sym, argc) sym
+
#endif
diff -up gnu-efi-3.0d/inc/ia32/efibind.h.unwrap gnu-efi-3.0d/inc/ia32/efibind.h
--- gnu-efi-3.0d/inc/ia32/efibind.h.unwrap 2008-03-10 14:34:58.000000000 -0400
+++ gnu-efi-3.0d/inc/ia32/efibind.h 2008-03-10 14:35:49.000000000 -0400
@@ -234,7 +234,22 @@ typedef uint32_t UINTN;
// one big module.
//
- #define EFI_DRIVER_ENTRY_POINT(InitFunction)
+ #define EFI_DRIVER_ENTRY_POINT(InitFunction) \
+ UINTN \
+ InitializeDriver ( \
+ VOID *ImageHandle, \
+ VOID *SystemTable \
+ ) \
+ { \
+ return InitFunction(ImageHandle, \
+ SystemTable); \
+ } \
+ \
+ EFI_STATUS efi_main( \
+ EFI_HANDLE image, \
+ EFI_SYSTEM_TABLE *systab \
+ ) __attribute__((weak, \
+ alias ("InitializeDriver")));
#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
(_if)->LoadInternal(type, name, entry)
diff -up gnu-efi-3.0d/inc/x86_64/pe.h.unwrap gnu-efi-3.0d/inc/x86_64/pe.h
--- gnu-efi-3.0d/inc/x86_64/pe.h.unwrap 2008-03-10 14:37:23.000000000 -0400
+++ gnu-efi-3.0d/inc/x86_64/pe.h 2008-03-10 14:38:08.000000000 -0400
@@ -588,4 +588,184 @@ typedef struct _IMAGE_IMPORT_DESCRIPTOR
PIMAGE_THUNK_DATA FirstThunk;
} IMAGE_IMPORT_DESCRIPTOR, *PIMAGE_IMPORT_DESCRIPTOR;
+#define alloc_lin_stack_frame(argc) \
+ "subq ($" #argc "-6)*8, %rsp\n\t"
+#define free_lin_stack_frame(argc) \
+ "addq ($" #argc "-6)*8, %rsp\n\t"
+
+#define efi2lin_prolog \
+ "push %rsi\n\t" \
+ "push %rdi\n\t"
+
+#define efi2lin_epilog \
+ "pop %rdi\n\t" \
+ "pop %rsi\n\t"
+
+#define call_lin_func \
+ "xor %rax, %rax\n\t" \
+ "call *%r10\n\t"
+
+#define efi2lin_efi_arg(n) "(" #n "+2)*8(%rsp)"
+
+#define efi2lin_arg1 "mov %rcx, %rdi\n\t"
+#define efi2lin_arg2 "mov %rdx, %rsi\n\t"
+#define efi2lin_arg3 "mov %r8, %rdx\n\t"
+#define efi2lin_arg4 "mov %r9, %rcx\n\t"
+#define efi2lin_arg5 "mov " efi2lin_efi_arg(5) ", %r8\n\t"
+#define efi2lin_arg6 "mov " efi2lin_efi_arg(6) ", %r9\n\t"
+
+#define efi2lin0 \
+ efi2lin_prolog \
+ call_lin_func \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin1 \
+ efi2lin_prolog \
+ efi2lin_arg1 \
+ call_lin_func \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin2 \
+ efi2lin_prolog \
+ efi2lin_arg1 \
+ efi2lin_arg2 \
+ call_lin_func \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin3 \
+ efi2lin_prolog \
+ efi2lin_arg1 \
+ efi2lin_arg2 \
+ efi2lin_arg3 \
+ call_lin_func \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin4 \
+ efi2lin_prolog \
+ efi2lin_arg1 \
+ efi2lin_arg2 \
+ efi2lin_arg3 \
+ efi2lin_arg4 \
+ call_lin_func \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin5 \
+ efi2lin_prolog \
+ efi2lin_arg1 \
+ efi2lin_arg2 \
+ efi2lin_arg3 \
+ efi2lin_arg4 \
+ efi2lin_arg5 \
+ call_lin_func \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin6 \
+ efi2lin_prolog \
+ efi2lin_arg1 \
+ efi2lin_arg2 \
+ efi2lin_arg3 \
+ efi2lin_arg4 \
+ efi2lin_arg5 \
+ efi2lin_arg6 \
+ call_lin_func \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define call_lin_func_args(n) \
+ "subq $(" #n "-6) *8, %rsp\n\t" \
+ call_lin_func \
+ "addq $(" #n "-6) *8, %rsp\n\t"
+
+#define efi2lin_lin_arg(m, n) "(" #m "-1-" #n ")*8(%rsp)"
+
+#define efi2lin7 \
+ efi2lin_prolog \
+ \
+ efi2lin_arg1 \
+ efi2lin_arg2 \
+ efi2lin_arg3 \
+ efi2lin_arg4 \
+ efi2lin_arg5 \
+ efi2lin_arg6 \
+ \
+ "# copy efidows argument 7 onto stack for Linux function" \
+ "mov " efi2lin_efi_arg(7) ", %r11 \n\t" \
+ "mov %r11, " efi2lin_lin_arg(7,7) "\n\t" \
+ \
+ call_lin_func_args(7) \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin8 \
+ efi2lin_prolog \
+ \
+ efi2lin_arg1 \
+ efi2lin_arg2 \
+ efi2lin_arg3 \
+ efi2lin_arg4 \
+ efi2lin_arg5 \
+ efi2lin_arg6 \
+ \
+ "# copy efidows arguments 7 and 8 onto stack for Linux function" \
+ "mov " efi2lin_efi_arg(7) ", %r11\n\t" \
+ "mov %r11, " efi2lin_lin_arg(7,8) "\n\t" \
+ "mov " efi2lin_efi_arg(8) ", %r11\n\t" \
+ "mov %r11, " efi2lin_lin_arg(8,8) "\n\t" \
+ \
+ call_lin_func_args(8) \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin9to12 \
+ efi2lin_prolog \
+ \
+ "# since we destroy rsi and rdi here, first copy efidows\n\t" \
+ "# arguments 7 through 12 onto stack for Linux function\n\t" \
+ "mov %rcx, %r11 # save rcx\n\t" \
+ "lea " efi2lin_efi_arg(7) ", %rsi # source (efidows arg 7 and up)\n\t" \
+ "lea " efi2lin_lin_arg(7,12) ", %rdi # = destination\n\t" \
+ "mov $6, %rcx # 6 arguments\n\t" \
+ "rep\n\t" \
+ "movsq\n\t" \
+ "mov %r11, %rcx # restore rcx\n\t" \
+ \
+ efi2lin_arg1 \
+ efi2lin_arg2 \
+ efi2lin_arg3 \
+ efi2lin_arg4 \
+ efi2lin_arg5 \
+ efi2lin_arg6 \
+ \
+ call_lin_func_args(12) \
+ efi2lin_epilog \
+ "ret\n\t"
+
+#define efi2lin9 efi2lin9to12
+#define efi2lin10 efi2lin9to12
+#define efi2lin11 efi2lin9to12
+#define efi2lin12 efi2lin9to12
+
+#define EFI_TOKEN_PASTE(a,b) a ## b
+#define EFI_TOKEN_STRING(a) #a
+#define EFI_CALL_NAME(sym) _efi_wrap_ ## sym
+#define EFI_CALL(sym, argc) \
+ extern EFI_CALL_NAME(sym)(); \
+ \
+ __asm__ ("\n" \
+ ".globl " #sym "\n\t" \
+ ".type\t" #sym ", @function\n" \
+ #sym ":\n\t" \
+ "lea\t_efi_wrap_" #sym "@PLT, %r10\n\t" \
+ EFI_TOKEN_PASTE(efi2lin, argc) \
+ ".size\t" #sym ", .-" #sym "\n\t" \
+ ); \
+ \
+ EFI_STATUS EFI_CALL_NAME(sym)
+
#endif
diff -up gnu-efi-3.0d/inc/x86_64/efibind.h.unwrap gnu-efi-3.0d/inc/x86_64/efibind.h
--- gnu-efi-3.0d/inc/x86_64/efibind.h.unwrap 2008-03-10 14:30:40.000000000 -0400
+++ gnu-efi-3.0d/inc/x86_64/efibind.h 2008-03-10 14:35:51.000000000 -0400
@@ -234,7 +234,22 @@ typedef uint64_t UINTN;
// one big module.
//
- #define EFI_DRIVER_ENTRY_POINT(InitFunction)
+ #define EFI_DRIVER_ENTRY_POINT(InitFunction) \
+ UINTN \
+ InitializeDriver ( \
+ VOID *ImageHandle, \
+ VOID *SystemTable \
+ ) \
+ { \
+ return InitFunction(ImageHandle, \
+ SystemTable); \
+ } \
+ \
+ EFI_STATUS efi_main( \
+ EFI_HANDLE image, \
+ EFI_SYSTEM_TABLE *systab \
+ ) __attribute__((weak, \
+ alias ("InitializeDriver")));
#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
(_if)->LoadInternal(type, name, entry)
diff -up gnu-efi-3.0d/inc/ia64/pe.h.unwrap gnu-efi-3.0d/inc/ia64/pe.h
--- gnu-efi-3.0d/inc/ia64/pe.h.unwrap 2008-03-10 14:39:01.000000000 -0400
+++ gnu-efi-3.0d/inc/ia64/pe.h 2008-03-10 14:39:20.000000000 -0400
@@ -594,4 +594,6 @@ typedef struct _IMAGE_IMPORT_DESCRIPTOR
PIMAGE_THUNK_DATA FirstThunk;
} IMAGE_IMPORT_DESCRIPTOR, *PIMAGE_IMPORT_DESCRIPTOR;
+#define EFI_CALL(sym, argc) sym
+
#endif
diff -up gnu-efi-3.0d/inc/ia64/efibind.h.unwrap gnu-efi-3.0d/inc/ia64/efibind.h
--- gnu-efi-3.0d/inc/ia64/efibind.h.unwrap 2008-03-10 14:36:00.000000000 -0400
+++ gnu-efi-3.0d/inc/ia64/efibind.h 2008-03-10 14:36:59.000000000 -0400
@@ -187,7 +187,22 @@ void __mf (void);
// one big module.
//
-#define EFI_DRIVER_ENTRY_POINT(InitFunction)
+#define EFI_DRIVER_ENTRY_POINT(InitFunction) \
+ UINTN \
+ InitializeDriver ( \
+ VOID *ImageHandle, \
+ VOID *SystemTable \
+ ) \
+ { \
+ return InitFunction(ImageHandle, \
+ SystemTable); \
+ } \
+ \
+ EFI_STATUS efi_main( \
+ EFI_HANDLE image, \
+ EFI_SYSTEM_TABLE *systab \
+ ) __attribute__((weak, \
+ alias ("InitializeDriver")));
#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
(_if)->LoadInternal(type, name, entry)

25
gnu-efi-3.0e-Add-.S-and-.E-rules.patch Normal file
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@ -0,0 +1,25 @@
From 44e7c2b928b8c71dfe189208e35ca49ab210f058 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Tue, 9 Aug 2011 12:30:49 -0400
Subject: [PATCH] Add %.S and %.E rules to make debugging easier.
---
Make.rules | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/Make.rules b/Make.rules
index 1f24ebd..cb029c3 100644
--- a/Make.rules
+++ b/Make.rules
@@ -31,3 +31,8 @@
%.o: %.c
$(CC) $(INCDIR) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
+%.S: %.c
+ $(CC) $(INCDIR) $(CFLAGS) $(CPPFLAGS) -S $< -o $@
+
+%.E: %.c
+ $(CC) $(INCDIR) $(CFLAGS) $(CPPFLAGS) -E $< -o $@
--
1.7.6

484
gnu-efi-3.0e-Add-tcc.efi-to-test-our-calling-convention-shananaga.patch Normal file
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@ -0,0 +1,484 @@
From 6ae2cc94566550e2e27c791485319bd5791cc861 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Tue, 9 Aug 2011 13:46:53 -0400
Subject: [PATCH] Add tcc.efi to test our calling convention shananagans.
Add a test case to actually make sure we've got stack alignment and
calling conventions set up correctly.
---
apps/Makefile | 3 +-
apps/tcc.c | 442 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 444 insertions(+), 1 deletions(-)
create mode 100644 apps/tcc.c
diff --git a/apps/Makefile b/apps/Makefile
index 6b50e4f..71e738d 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -32,13 +32,14 @@ TOPDIR = $(SRCDIR)/..
CDIR=$(TOPDIR)/..
LINUX_HEADERS = /usr/src/sys/build
CPPFLAGS += -D__KERNEL__ -I$(LINUX_HEADERS)/include
+#CFLAGS += -ggdb
CRTOBJS = ../gnuefi/crt0-efi-$(ARCH).o
LDSCRIPT = $(TOPDIR)/gnuefi/elf_$(ARCH)_efi.lds
LDFLAGS += -T $(LDSCRIPT) -shared -Bsymbolic -L../lib -L../gnuefi $(CRTOBJS)
LOADLIBES = -lefi -lgnuefi $(shell $(CC) $(ARCH3264) -print-libgcc-file-name)
FORMAT = efi-app-$(ARCH)
-TARGETS = t.efi t2.efi t3.efi t4.efi t5.efi t6.efi printenv.efi t7.efi route80h.efi modelist.efi
+TARGETS = t.efi t2.efi t3.efi t4.efi t5.efi t6.efi printenv.efi t7.efi route80h.efi modelist.efi tcc.efi
all: $(TARGETS)
diff --git a/apps/tcc.c b/apps/tcc.c
new file mode 100644
index 0000000..546df92
--- /dev/null
+++ b/apps/tcc.c
@@ -0,0 +1,442 @@
+/*
+ * Test if our calling convention gymnastics actually work
+ */
+
+#include <efi.h>
+#include <efilib.h>
+
+#ifdef __x86_64__
+#include <x86_64/pe.h>
+#include <x86_64/efibind.h>
+#endif
+
+#if 0
+ asm volatile("out %0,%1" : : "a" ((uint8_t)a), "dN" (0x80));
+#endif
+
+extern void dump_stack(void);
+asm( ".globl dump_stack\n"
+ "dump_stack:\n"
+ " movq %rsp, %rdi\n"
+ " jmp *dump_stack_helper@GOTPCREL(%rip)\n"
+ ".size dump_stack, .-dump_stack");
+
+void dump_stack_helper(uint64_t rsp_val)
+{
+ uint64_t *rsp = (uint64_t *)rsp_val;
+ int x;
+
+ Print(L"%%rsp: 0x%08x%08x stack:\r\n",
+ (rsp_val & 0xffffffff00000000) >>32,
+ rsp_val & 0xffffffff);
+ for (x = 0; x < 8; x++) {
+ Print(L"%08x: ", ((uint64_t)rsp) & 0xffffffff);
+ Print(L"%016x ", *rsp++);
+ Print(L"%016x ", *rsp++);
+ Print(L"%016x ", *rsp++);
+ Print(L"%016x\r\n", *rsp++);
+ }
+}
+
+EFI_STATUS EFI_FUNCTION test_failure_callback(void)
+{
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS test_failure(void)
+{
+ return uefi_call_wrapper(test_failure_callback, 0);
+}
+
+EFI_STATUS EFI_FUNCTION test_call0_callback(void)
+{
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call0(void)
+{
+ return uefi_call_wrapper(test_call0_callback, 0);
+}
+
+EFI_STATUS EFI_FUNCTION test_call1_callback(UINT32 a)
+{
+ if (a != 0x12345678) {
+ return EFI_LOAD_ERROR;
+ }
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call1(void)
+{
+ return uefi_call_wrapper(test_call1_callback, 1,0x12345678);
+}
+
+EFI_STATUS EFI_FUNCTION test_call2_callback(UINT32 a, UINT32 b)
+{
+ if (a != 0x12345678) {
+ return EFI_LOAD_ERROR;
+ }
+ if (b != 0x23456789) {
+ return EFI_INVALID_PARAMETER;
+ }
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call2(void)
+{
+ return uefi_call_wrapper(test_call2_callback, 2,
+ 0x12345678, 0x23456789);
+}
+
+EFI_STATUS EFI_FUNCTION test_call3_callback(UINT32 a, UINT32 b,
+ UINT32 c)
+{
+ if (a != 0x12345678)
+ return EFI_LOAD_ERROR;
+ if (b != 0x23456789)
+ return EFI_INVALID_PARAMETER;
+ if (c != 0x3456789a)
+ return EFI_UNSUPPORTED;
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call3(void)
+{
+ return uefi_call_wrapper(test_call3_callback, 3,
+ 0x12345678, 0x23456789, 0x3456789a);
+}
+
+EFI_STATUS EFI_FUNCTION test_call4_callback(UINT32 a, UINT32 b,
+ UINT32 c, UINT32 d)
+{
+ if (a != 0x12345678)
+ return EFI_LOAD_ERROR;
+ if (b != 0x23456789)
+ return EFI_INVALID_PARAMETER;
+ if (c != 0x3456789a)
+ return EFI_UNSUPPORTED;
+ if (d != 0x456789ab)
+ return EFI_BAD_BUFFER_SIZE;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call4(void)
+{
+ return uefi_call_wrapper(test_call4_callback, 4,
+ 0x12345678, 0x23456789, 0x3456789a, 0x456789ab);
+}
+
+EFI_STATUS EFI_FUNCTION test_call5_callback(UINT32 a, UINT32 b,
+ UINT32 c, UINT32 d, UINT32 e)
+{
+ if (a != 0x12345678)
+ return EFI_LOAD_ERROR;
+ if (b != 0x23456789)
+ return EFI_INVALID_PARAMETER;
+ if (c != 0x3456789a)
+ return EFI_UNSUPPORTED;
+ if (d != 0x456789ab)
+ return EFI_BAD_BUFFER_SIZE;
+ if (e != 0x56789abc)
+ return EFI_BUFFER_TOO_SMALL;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call5(void)
+{
+ return uefi_call_wrapper(test_call5_callback, 5,
+ 0x12345678, 0x23456789, 0x3456789a, 0x456789ab, 0x56789abc);
+}
+
+EFI_STATUS EFI_FUNCTION test_call6_callback(UINT32 a, UINT32 b,
+ UINT32 c, UINT32 d, UINT32 e, UINT32 f)
+{
+ if (a != 0x12345678)
+ return EFI_LOAD_ERROR;
+ if (b != 0x23456789)
+ return EFI_INVALID_PARAMETER;
+ if (c != 0x3456789a)
+ return EFI_UNSUPPORTED;
+ if (d != 0x456789ab)
+ return EFI_BAD_BUFFER_SIZE;
+ if (e != 0x56789abc)
+ return EFI_BUFFER_TOO_SMALL;
+ if (f != 0x6789abcd)
+ return EFI_NOT_READY;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call6(void)
+{
+ return uefi_call_wrapper(test_call6_callback, 6,
+ 0x12345678, 0x23456789, 0x3456789a, 0x456789ab, 0x56789abc,
+ 0x6789abcd);
+}
+
+EFI_STATUS EFI_FUNCTION test_call7_callback(UINT32 a, UINT32 b,
+ UINT32 c, UINT32 d, UINT32 e, UINT32 f, UINT32 g)
+{
+ if (a != 0x12345678)
+ return EFI_LOAD_ERROR;
+ if (b != 0x23456789)
+ return EFI_INVALID_PARAMETER;
+ if (c != 0x3456789a)
+ return EFI_UNSUPPORTED;
+ if (d != 0x456789ab)
+ return EFI_BAD_BUFFER_SIZE;
+ if (e != 0x56789abc)
+ return EFI_BUFFER_TOO_SMALL;
+ if (f != 0x6789abcd)
+ return EFI_NOT_READY;
+ if (g != 0x789abcde)
+ return EFI_DEVICE_ERROR;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call7(void)
+{
+ return uefi_call_wrapper(test_call7_callback, 7,
+ 0x12345678, 0x23456789, 0x3456789a, 0x456789ab,
+ 0x56789abc, 0x6789abcd, 0x789abcde);
+}
+
+EFI_STATUS EFI_FUNCTION test_call8_callback(UINT32 a, UINT32 b,
+ UINT32 c, UINT32 d, UINT32 e, UINT32 f, UINT32 g, UINT32 h)
+{
+ if (a != 0x12345678)
+ return EFI_LOAD_ERROR;
+ if (b != 0x23456789)
+ return EFI_INVALID_PARAMETER;
+ if (c != 0x3456789a)
+ return EFI_UNSUPPORTED;
+ if (d != 0x456789ab)
+ return EFI_BAD_BUFFER_SIZE;
+ if (e != 0x56789abc)
+ return EFI_BUFFER_TOO_SMALL;
+ if (f != 0x6789abcd)
+ return EFI_NOT_READY;
+ if (g != 0x789abcde)
+ return EFI_DEVICE_ERROR;
+ if (h != 0x89abcdef)
+ return EFI_WRITE_PROTECTED;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call8(void)
+{
+ return uefi_call_wrapper(test_call8_callback, 8,
+ 0x12345678,
+ 0x23456789,
+ 0x3456789a,
+ 0x456789ab,
+ 0x56789abc,
+ 0x6789abcd,
+ 0x789abcde,
+ 0x89abcdef);
+}
+
+EFI_STATUS EFI_FUNCTION test_call9_callback(UINT32 a, UINT32 b,
+ UINT32 c, UINT32 d, UINT32 e, UINT32 f, UINT32 g, UINT32 h, UINT32 i)
+{
+ if (a != 0x12345678)
+ return EFI_LOAD_ERROR;
+ if (b != 0x23456789)
+ return EFI_INVALID_PARAMETER;
+ if (c != 0x3456789a)
+ return EFI_UNSUPPORTED;
+ if (d != 0x456789ab)
+ return EFI_BAD_BUFFER_SIZE;
+ if (e != 0x56789abc)
+ return EFI_BUFFER_TOO_SMALL;
+ if (f != 0x6789abcd)
+ return EFI_NOT_READY;
+ if (g != 0x789abcde)
+ return EFI_DEVICE_ERROR;
+ if (h != 0x89abcdef)
+ return EFI_WRITE_PROTECTED;
+ if (i != 0x9abcdef0)
+ return EFI_OUT_OF_RESOURCES;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call9(void)
+{
+ return uefi_call_wrapper(test_call9_callback, 9,
+ 0x12345678,
+ 0x23456789,
+ 0x3456789a,
+ 0x456789ab,
+ 0x56789abc,
+ 0x6789abcd,
+ 0x789abcde,
+ 0x89abcdef,
+ 0x9abcdef0);
+}
+
+extern EFI_STATUS test_call10(void);
+EFI_STATUS EFI_FUNCTION test_call10_callback(UINT32 a, UINT32 b,
+ UINT32 c, UINT32 d, UINT32 e, UINT32 f, UINT32 g, UINT32 h, UINT32 i,
+ UINT32 j)
+{
+ if (a != 0x12345678)
+ return EFI_LOAD_ERROR;
+ if (b != 0x23456789)
+ return EFI_INVALID_PARAMETER;
+ if (c != 0x3456789a)
+ return EFI_UNSUPPORTED;
+ if (d != 0x456789ab)
+ return EFI_BAD_BUFFER_SIZE;
+ if (e != 0x56789abc)
+ return EFI_BUFFER_TOO_SMALL;
+ if (f != 0x6789abcd)
+ return EFI_NOT_READY;
+ if (g != 0x789abcde)
+ return EFI_DEVICE_ERROR;
+ if (h != 0x89abcdef)
+ return EFI_WRITE_PROTECTED;
+ if (i != 0x9abcdef0)
+ return EFI_OUT_OF_RESOURCES;
+ if (j != 0xabcdef01)
+ return EFI_VOLUME_CORRUPTED;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS test_call10(void)
+{
+ return uefi_call_wrapper(test_call10_callback, 10,
+ 0x12345678,
+ 0x23456789,
+ 0x3456789a,
+ 0x456789ab,
+ 0x56789abc,
+ 0x6789abcd,
+ 0x789abcde,
+ 0x89abcdef,
+ 0x9abcdef0,
+ 0xabcdef01);
+}
+
+EFI_STATUS
+efi_main (EFI_HANDLE *image, EFI_SYSTEM_TABLE *systab)
+{
+ EFI_STATUS rc = EFI_SUCCESS;
+
+ InitializeLib(image, systab);
+ PoolAllocationType = 2; /* klooj */
+
+#ifndef __x86_64__
+ uefi_call_wrapper(systab->ConOut->OutputString, 2, systab->ConOut,
+ L"This test is only valid on x86_64\n");
+ return EFI_UNSUPPORTED;
+#endif
+
+ asm volatile("out %0,%1" : : "a" ((uint8_t)0x14), "dN" (0x80));
+
+ Print(L"Hello\r\n");
+ rc = test_failure();
+ if (EFI_ERROR(rc)) {
+ Print(L"Returning Failure works\n");
+ } else {
+ Print(L"Returning failure doesn't work.\r\n");
+ Print(L"%%rax was 0x%016x, should have been 0x%016x\n",
+ rc, EFI_UNSUPPORTED);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ rc = test_call0();
+ if (!EFI_ERROR(rc)) {
+ Print(L"0 args works just fine here.\r\n");
+ } else {
+ Print(L"0 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call1();
+ if (!EFI_ERROR(rc)) {
+ Print(L"1 arg works just fine here.\r\n");
+ } else {
+ Print(L"1 arg failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call2();
+ if (!EFI_ERROR(rc)) {
+ Print(L"2 args works just fine here.\r\n");
+ } else {
+ Print(L"2 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call3();
+ if (!EFI_ERROR(rc)) {
+ Print(L"3 args works just fine here.\r\n");
+ } else {
+ Print(L"3 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call4();
+ if (!EFI_ERROR(rc)) {
+ Print(L"4 args works just fine here.\r\n");
+ } else {
+ Print(L"4 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call5();
+ if (!EFI_ERROR(rc)) {
+ Print(L"5 args works just fine here.\r\n");
+ } else {
+ Print(L"5 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call6();
+ if (!EFI_ERROR(rc)) {
+ Print(L"6 args works just fine here.\r\n");
+ } else {
+ Print(L"6 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call7();
+ if (!EFI_ERROR(rc)) {
+ Print(L"7 args works just fine here.\r\n");
+ } else {
+ Print(L"7 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call8();
+ if (!EFI_ERROR(rc)) {
+ Print(L"8 args works just fine here.\r\n");
+ } else {
+ Print(L"8 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call9();
+ if (!EFI_ERROR(rc)) {
+ Print(L"9 args works just fine here.\r\n");
+ } else {
+ Print(L"9 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ rc = test_call10();
+ if (!EFI_ERROR(rc)) {
+ Print(L"10 args works just fine here.\r\n");
+ } else {
+ Print(L"10 args failed: 0x%016x\n", rc);
+ return rc;
+ }
+
+ return rc;
+}
--
1.7.6

142
gnu-efi-3.0e-Add-the-routines-to-make-callbacks-work.patch Normal file
View File

@ -0,0 +1,142 @@
From 3f693b16c4f9992247e11c1f15cf0e06bbf69a93 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Mon, 26 Jul 2010 17:04:12 -0400
Subject: [PATCH] Add the routines to make callbacks work.
GCC on x86_64 now provides a function attribute "ms_abi" to generate
functions using the Windows x86_64 calling conventions. These can be
used to write callback functions to be called from UEFI.
---
Make.defaults | 2 +-
inc/ia32/efibind.h | 18 +++++++++++++++++-
inc/ia64/efibind.h | 19 ++++++++++++++++++-
inc/x86_64/efibind.h | 22 +++++++++++++++++-----
4 files changed, 53 insertions(+), 8 deletions(-)
diff --git a/Make.defaults b/Make.defaults
index 529d58c..2a981a1 100644
--- a/Make.defaults
+++ b/Make.defaults
@@ -59,7 +59,7 @@ ifeq ($(ARCH), ia32)
endif
ifeq ($(ARCH), x86_64)
- CFLAGS += -DEFI_FUNCTION_WRAPPER -mno-red-zone
+ CFLAGS += -mno-red-zone
ifeq ($(HOSTARCH), ia32)
ARCH3264 = -m64
endif
diff --git a/inc/ia32/efibind.h b/inc/ia32/efibind.h
index 647a63e..0201ca1 100644
--- a/inc/ia32/efibind.h
+++ b/inc/ia32/efibind.h
@@ -234,7 +234,22 @@ typedef uint32_t UINTN;
// one big module.
//
- #define EFI_DRIVER_ENTRY_POINT(InitFunction)
+ #define EFI_DRIVER_ENTRY_POINT(InitFunction) \
+ UINTN \
+ InitializeDriver ( \
+ VOID *ImageHandle, \
+ VOID *SystemTable \
+ ) \
+ { \
+ return InitFunction(ImageHandle, \
+ SystemTable); \
+ } \
+ \
+ EFI_STATUS efi_main( \
+ EFI_HANDLE image, \
+ EFI_SYSTEM_TABLE *systab \
+ ) __attribute__((weak, \
+ alias ("InitializeDriver")));
#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
(_if)->LoadInternal(type, name, entry)
@@ -259,6 +274,7 @@ typedef uint32_t UINTN;
/* No efi call wrapper for IA32 architecture */
#define uefi_call_wrapper(func, va_num, ...) func(__VA_ARGS__)
+#define EFI_FUNCTION
#ifdef _MSC_EXTENSIONS
#pragma warning ( disable : 4731 ) // Suppress warnings about modification of EBP
diff --git a/inc/ia64/efibind.h b/inc/ia64/efibind.h
index 83ca529..aac83b3 100644
--- a/inc/ia64/efibind.h
+++ b/inc/ia64/efibind.h
@@ -182,7 +182,22 @@ void __mf (void);
// one big module.
//
-#define EFI_DRIVER_ENTRY_POINT(InitFunction)
+#define EFI_DRIVER_ENTRY_POINT(InitFunction) \
+ UINTN \
+ InitializeDriver ( \
+ VOID *ImageHandle, \
+ VOID *SystemTable \
+ ) \
+ { \
+ return InitFunction(ImageHandle, \
+ SystemTable); \
+ } \
+ \
+ EFI_STATUS efi_main( \
+ EFI_HANDLE image, \
+ EFI_SYSTEM_TABLE *systab \
+ ) __attribute__((weak, \
+ alias ("InitializeDriver")));
#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
(_if)->LoadInternal(type, name, entry)
@@ -205,3 +220,5 @@ void __mf (void);
/* No efi call wrapper for IA32 architecture */
#define uefi_call_wrapper(func, va_num, ...) func(__VA_ARGS__)
+#define EFI_FUNCTION
+
diff --git a/inc/x86_64/efibind.h b/inc/x86_64/efibind.h
index 1f8e735..9250973 100644
--- a/inc/x86_64/efibind.h
+++ b/inc/x86_64/efibind.h
@@ -234,7 +234,22 @@ typedef uint64_t UINTN;
// one big module.
//
- #define EFI_DRIVER_ENTRY_POINT(InitFunction)
+ #define EFI_DRIVER_ENTRY_POINT(InitFunction) \
+ UINTN \
+ InitializeDriver ( \
+ VOID *ImageHandle, \
+ VOID *SystemTable \
+ ) \
+ { \
+ return InitFunction(ImageHandle, \
+ SystemTable); \
+ } \
+ \
+ EFI_STATUS efi_main( \
+ EFI_HANDLE image, \
+ EFI_SYSTEM_TABLE *systab \
+ ) __attribute__((weak, \
+ alias ("InitializeDriver")));
#define LOAD_INTERNAL_DRIVER(_if, type, name, entry) \
(_if)->LoadInternal(type, name, entry)
@@ -258,11 +273,8 @@ typedef uint64_t UINTN;
#endif
/* for x86_64, EFI_FUNCTION_WRAPPER must be defined */
-#ifdef EFI_FUNCTION_WRAPPER
UINTN uefi_call_wrapper(void *func, unsigned long va_num, ...);
-#else
-#error "EFI_FUNCTION_WRAPPER must be defined for x86_64 architecture"
-#endif
+#define EFI_FUNCTION __attribute__((ms_abi))
#ifdef _MSC_EXTENSIONS
#pragma warning ( disable : 4731 ) // Suppress warnings about modification of EBP
--
1.7.6

333
gnu-efi-3.0e-Guarantee-16-byte-stack-alignment-on-x86_64-efi_call.patch Normal file
View File

@ -0,0 +1,333 @@
From 1c5d58b7ce7df3a68fec248f7b8f2de943eb6ffd Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Mon, 1 Aug 2011 16:00:35 -0400
Subject: [PATCH] Guarantee 16-byte stack alignment on x86_64 efi_callN()
The Windows ABI requires 16-byte stack alignment, but the ELF/SysV ABI
only guarantees 8-byte alignment. This causes some machines to present
undefined behavior. To solve this, add some padding to the stack and store
our pad amount in the padding.
This (along with another patch) fixes Red Hat bugzillas 669765 and
677468 .
---
lib/x86_64/efi_stub.S | 213 ++++++++++++++++++++++++++++++++++++++++---------
1 files changed, 176 insertions(+), 37 deletions(-)
diff --git a/lib/x86_64/efi_stub.S b/lib/x86_64/efi_stub.S
index f9e70d4..5607779 100644
--- a/lib/x86_64/efi_stub.S
+++ b/lib/x86_64/efi_stub.S
@@ -6,133 +6,272 @@
* Huang Ying <ying.huang@intel.com>
*/
+/*
+ * EFI calling conventions are documented at:
+ * http://msdn.microsoft.com/en-us/library/ms235286%28v=vs.80%29.aspx
+ * ELF calling conventions are documented at:
+ * http://www.x86-64.org/documentation/abi.pdf
+ *
+ * Basically here are the conversion rules:
+ * a) our function pointer is in %rdi
+ * b) ELF gives us 8-byte aligned %rsp, so we need to pad out to 16-byte
+ * alignment.
+ * c) inside each call thunker, we can only adjust the stack by
+ * multiples of 16 bytes. "offset" below refers to however much
+ * we allocate inside a thunker.
+ * d) rsi through r8 (elf) aka rcx through r9 (ms) require stack space
+ * on the MS side even though it's not getting used at all.
+ * e) arguments are as follows: (elf -> ms)
+ * 1) rdi -> rcx (32 saved)
+ * 2) rsi -> rdx (32 saved)
+ * 3) rdx -> r8 ( 32 saved)
+ * 4) rcx -> r9 (32 saved)
+ * 5) r8 -> 32(%rsp) (48 saved)
+ * 6) r9 -> 40(%rsp) (48 saved)
+ * 7) pad+offset+0(%rsp) -> 48(%rsp) (64 saved)
+ * 8) pad+offset+8(%rsp) -> 56(%rsp) (64 saved)
+ * 9) pad+offset+16(%rsp) -> 64(%rsp) (80 saved)
+ * 10) pad+offset+24(%rsp) -> 72(%rsp) (80 saved)
+ * 11) pad+offset+32(%rsp) -> 80(%rsp) (96 saved)
+ * 12) pad+offset+40(%rsp) -> 88(%rsp) (96 saved)
+ * f) because the first argument we recieve in a thunker is actually the
+ * function to be called, arguments are offset as such:
+ * 0) rdi -> caller
+ * 1) rsi -> rcx (32 saved)
+ * 2) rdx -> rdx (32 saved)
+ * 3) rcx -> r8 (32 saved)
+ * 4) r8 -> r9 (32 saved)
+ * 5) r9 -> 32(%rsp) (48 saved)
+ * 6) pad+offset+0(%rsp) -> 40(%rsp) (48 saved)
+ * 7) pad+offset+8(%rsp) -> 48(%rsp) (64 saved)
+ * 8) pad+offset+16(%rsp) -> 56(%rsp) (64 saved)
+ * 9) pad+offset+24(%rsp) -> 64(%rsp) (80 saved)
+ * 10) pad+offset+32(%rsp) -> 72(%rsp) (80 saved)
+ * 11) pad+offset+40(%rsp) -> 80(%rsp) (96 saved)
+ * 12) pad+offset+48(%rsp) -> 88(%rsp) (96 saved)
+ * e) arguments need to be moved in opposite order to avoid clobbering
+ * f) pad_stack leaves the amount of padding it added in %r11 for functions
+ * to use
+ * g) efi -> elf calls don't need to pad the stack, because the 16-byte
+ * alignment is also always 8-byte aligned.
+ */
+
#define ENTRY(name) \
.globl name; \
name:
+#define out(val) \
+ push %rax ; \
+ mov val, %rax ; \
+ out %al, $128 ; \
+ pop %rax
+
+#define pad_stack \
+ subq $8, %rsp ; /* must be a multiple of 16 - sizeof(%rip) */ \
+ /* stash some handy integers */ \
+ mov $0x8, %rax ; \
+ mov $0x10, %r10 ; \
+ mov $0xf, %r11 ; \
+ /* see if we need padding */ \
+ and %rsp, %rax ; \
+ /* store the pad amount in %r11 */ \
+ cmovnz %rax, %r11 ; \
+ cmovz %r10, %r11 ; \
+ /* insert the padding */ \
+ subq %r11, %rsp ; \
+ /* add the $8 we saved above in %r11 */ \
+ addq $8, %r11 ; \
+ /* store the pad amount */ \
+ mov %r11, (%rsp) ; \
+ /* compensate for %rip being stored on the stack by call */ \
+ addq $8, %r11
+
+#define unpad_stack \
+ /* fetch the pad amount we saved (%r11 has been clobbered) */ \
+ mov (%rsp), %r11 ; \
+ /* remove the padding */ \
+ addq %r11, %rsp
+
ENTRY(efi_call0)
- subq $40, %rsp
+ pad_stack
+ subq $32, %rsp
call *%rdi
- addq $40, %rsp
+ addq $32, %rsp
+ unpad_stack
ret
ENTRY(efi_call1)
- subq $40, %rsp
+ pad_stack
+ subq $32, %rsp
mov %rsi, %rcx
call *%rdi
- addq $40, %rsp
+ addq $32, %rsp
+ unpad_stack
ret
ENTRY(efi_call2)
- subq $40, %rsp
+ pad_stack
+ subq $32, %rsp
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $40, %rsp
+ addq $32, %rsp
+ unpad_stack
ret
ENTRY(efi_call3)
- subq $40, %rsp
+ pad_stack
+ subq $32, %rsp
mov %rcx, %r8
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $40, %rsp
+ addq $32, %rsp
+ unpad_stack
ret
ENTRY(efi_call4)
- subq $40, %rsp
+ pad_stack
+ subq $32, %rsp
mov %r8, %r9
mov %rcx, %r8
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $40, %rsp
+ addq $32, %rsp
+ unpad_stack
ret
ENTRY(efi_call5)
- subq $40, %rsp
+ pad_stack
+ subq $48, %rsp
mov %r9, 32(%rsp)
mov %r8, %r9
mov %rcx, %r8
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $40, %rsp
+ addq $48, %rsp
+ unpad_stack
ret
ENTRY(efi_call6)
- subq $56, %rsp
- mov 56+8(%rsp), %rax
+ pad_stack
+ subq $48, %rsp
+ addq $48, %r11
+ addq %rsp, %r11
+ mov (%r11), %rax
mov %rax, 40(%rsp)
mov %r9, 32(%rsp)
mov %r8, %r9
mov %rcx, %r8
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $56, %rsp
+ addq $48, %rsp
+ unpad_stack
ret
ENTRY(efi_call7)
- subq $56, %rsp
- mov 56+16(%rsp), %rax
+ pad_stack
+ subq $64, %rsp
+ addq $64, %r11
+ addq $8, %r11
+ addq %rsp, %r11
+ mov (%r11), %rax
mov %rax, 48(%rsp)
- mov 56+8(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 40(%rsp)
mov %r9, 32(%rsp)
mov %r8, %r9
mov %rcx, %r8
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $56, %rsp
+ addq $64, %rsp
+ unpad_stack
ret
ENTRY(efi_call8)
- subq $72, %rsp
- mov 72+24(%rsp), %rax
+ pad_stack
+ subq $64, %rsp
+ addq $64, %r11
+ addq $16, %r11
+ addq %rsp, %r11
+ mov (%r11), %rax
mov %rax, 56(%rsp)
- mov 72+16(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 48(%rsp)
- mov 72+8(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 40(%rsp)
mov %r9, 32(%rsp)
mov %r8, %r9
mov %rcx, %r8
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $72, %rsp
+ addq $64, %rsp
+ unpad_stack
ret
ENTRY(efi_call9)
- subq $72, %rsp
- mov 72+32(%rsp), %rax
+ pad_stack
+ subq $80, %rsp
+ addq $80, %r11
+ addq $24, %r11
+ addq %rsp, %r11
+ mov (%r11), %rax
mov %rax, 64(%rsp)
- mov 72+24(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 56(%rsp)
- mov 72+16(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 48(%rsp)
- mov 72+8(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 40(%rsp)
mov %r9, 32(%rsp)
mov %r8, %r9
mov %rcx, %r8
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $72, %rsp
+ addq $80, %rsp
+ unpad_stack
ret
ENTRY(efi_call10)
- subq $88, %rsp
- mov 88+40(%rsp), %rax
+ pad_stack
+ subq $80, %rsp
+ addq $80, %r11
+ addq $32, %r11
+ addq %rsp, %r11
+ mov (%r11), %rax
mov %rax, 72(%rsp)
- mov 88+32(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 64(%rsp)
- mov 88+24(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 56(%rsp)
- mov 88+16(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 48(%rsp)
- mov 88+8(%rsp), %rax
+ subq $8, %r11
+ mov (%r11), %rax
mov %rax, 40(%rsp)
mov %r9, 32(%rsp)
mov %r8, %r9
mov %rcx, %r8
+ /* mov %rdx, %rdx */
mov %rsi, %rcx
call *%rdi
- addq $88, %rsp
+ addq $80, %rsp
+ unpad_stack
ret
+
+
--
1.7.6

13
gnu-efi.spec
View File

@ -1,7 +1,7 @@
Summary: Development Libraries and headers for EFI
Name: gnu-efi
Version: 3.0e
Release: 13%{?dist}
Release: 14%{?dist}
Group: Development/System
License: GPLv2+
URL: ftp://ftp.hpl.hp.com/pub/linux-ia64
@ -14,6 +14,11 @@ Patch4: gnu-efi-3.0e-add-pciio.patch
Patch5: gnu-efi-3.0e-route80h.patch
Patch6: gnu-efi-3.0e-modelist.patch
Patch7: gnu-efi-3.0e-route80h-add-cougarpoint.patch
Patch8: gnu-efi-3.0e-machine-types.patch
Patch9: gnu-efi-3.0e-Add-.S-and-.E-rules.patch
Patch10: gnu-efi-3.0e-Guarantee-16-byte-stack-alignment-on-x86_64-efi_call.patch
Patch11: gnu-efi-3.0e-Add-the-routines-to-make-callbacks-work.patch
Patch12: gnu-efi-3.0e-Add-tcc.efi-to-test-our-calling-convention-shananaga.patch
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
ExclusiveArch: i686 x86_64 ia64
BuildRequires: git
@ -63,6 +68,12 @@ rm -rf %{buildroot}
%attr(0644,root,root) /boot/efi/EFI/redhat/*.efi
%changelog
* Thu Aug 11 2011 Peter Jones <pjones@redhat.com> - 3.0e-14
- Correctly pad the stack when doing uefi calls
Related: rhbz#677468
- Add ability to write UEFI callbacks and drivers
- Add test harness for ABI Calling Conventions
* Wed Feb 09 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 3.0e-13
- Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild