From 6a01ac25040e69186033d3d4292aa48545f34383 Mon Sep 17 00:00:00 2001
From: Raul E Rangel <rrangel@chromium.org>
Date: Fri, 23 Jul 2021 10:09:45 -0600
Subject: arch/x86/thread: Add #error when compiling for x86_64
The x86 thread code is all x86_32 specific. It needs to be updated to
work with 64 bit. For now just throw an error when compiling.
BUG=b:179699789
TEST=none
Suggested-by: Furquan Shaikh <furquan@google.com>
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I96187ad84bdec40c6883748afa41e217bc389b79
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56571
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
---
src/arch/x86/thread.c | 4 ++++
src/arch/x86/thread_switch.S | 4 ++++
2 files changed, 8 insertions(+)
(limited to 'src')
diff --git a/src/arch/x86/thread.c b/src/arch/x86/thread.c
index a9fda66245..fa6096161b 100644
--- a/src/arch/x86/thread.c
+++ b/src/arch/x86/thread.c
@@ -2,6 +2,10 @@
#include <thread.h>
+#if ENV_X86_64
+#error COOP_MULTITASKING does not currently support x86_64
+#endif
+
/* The stack frame looks like the following after a pushad instruction. */
struct pushad_regs {
uint32_t edi; /* Offset 0x00 */
diff --git a/src/arch/x86/thread_switch.S b/src/arch/x86/thread_switch.S
index 049f092741..3c6a34dd13 100644
--- a/src/arch/x86/thread_switch.S
+++ b/src/arch/x86/thread_switch.S
@@ -1,5 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0-only */
+#if ENV_X86_64
+#error COOP_MULTITASKING does not currently support x86_64
+#endif
+
.code32
.text
--
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