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[Qemu-devel] [PULL 22/26] tests/tcg/i386: add system mode Hello World te
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [PULL 22/26] tests/tcg/i386: add system mode Hello World test |
Date: |
Tue, 12 Mar 2019 17:09:27 +0000 |
This introduces the build framework for simple i386 system tests. The
first test is the eponymous "Hello World" which simply outputs the
text on the serial port and then exits.
I've included the framework for x86_64 but it is not in this series as
it is a work in progress.
Signed-off-by: Alex Bennée <address@hidden>
diff --git a/tests/tcg/i386/Makefile.softmmu-target
b/tests/tcg/i386/Makefile.softmmu-target
new file mode 100644
index 0000000000..53c9c5ece0
--- /dev/null
+++ b/tests/tcg/i386/Makefile.softmmu-target
@@ -0,0 +1,46 @@
+#
+# x86 system tests
+#
+# This currently builds only for i386. The common C code is built
+# with standard compiler flags however so we can support both by
+# adding additional boot files for x86_64.
+#
+
+I386_SYSTEM_SRC=$(SRC_PATH)/tests/tcg/i386/system
+X64_SYSTEM_SRC=$(SRC_PATH)/tests/tcg/x86_64/system
+# Set search path for all sources
+VPATH+=$(I386_SYSTEM_SRC)
+
+# These objects provide the basic boot code and helper functions for all tests
+CRT_OBJS=boot.o
+
+X86_TEST_SRCS=$(wildcard $(I386_SYSTEM_SRC)/*.c)
+X86_TESTS = $(patsubst $(I386_SYSTEM_SRC)/%.c, %, $(X86_TEST_SRCS))
+
+ifeq ($(TARGET_X86_64), y)
+CRT_PATH=$(X64_SYSTEM_SRC)
+LINK_SCRIPT=$(X64_SYSTEM_SRC)/kernel.ld
+LDFLAGS=-Wl,-T$(LINK_SCRIPT) -Wl,-melf_x86_64
+else
+CRT_PATH=$(I386_SYSTEM_SRC)
+CFLAGS+=-m32
+LINK_SCRIPT=$(I386_SYSTEM_SRC)/kernel.ld
+LDFLAGS=-Wl,-T$(LINK_SCRIPT) -Wl,-melf_i386
+# FIXME: move to common once x86_64 is bootstrapped
+TESTS+=$(X86_TESTS)
+endif
+CFLAGS+=-nostdlib -ggdb -O0 $(MINILIB_INC)
+LDFLAGS+=-static -nostdlib $(CRT_OBJS) $(MINILIB_OBJS) -lgcc
+
+# building head blobs
+.PRECIOUS: $(CRT_OBJS)
+
+%.o: $(CRT_PATH)/%.S
+ $(CC) $(CFLAGS) -c $< -o $@
+
+# Build and link the tests
+%: %.c $(LINK_SCRIPT) $(CRT_OBJS) $(MINILIB_OBJS)
+ $(CC) $(CFLAGS) $< -o $@ $(LDFLAGS)
+
+# Running
+QEMU_OPTS+=-device isa-debugcon,chardev=output -device
isa-debug-exit,iobase=0xf4,iosize=0x4 -kernel
diff --git a/tests/tcg/i386/system/boot.S b/tests/tcg/i386/system/boot.S
new file mode 100644
index 0000000000..90aa174908
--- /dev/null
+++ b/tests/tcg/i386/system/boot.S
@@ -0,0 +1,172 @@
+/*
+ * i386 boot code, based on qemu-bmibug.
+ *
+ * Copyright 2019 Doug Gale
+ * Copyright 2019 Linaro
+ *
+ * This work is licensed under the terms of the GNU GPL, version 3 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+ .section .head
+
+ /* Multi-boot header */
+multiboot_st:
+ .int 0x1BADB002
+ .int 0x10000
+ .int -(0x10000+0x1BADB002)
+ // Load address
+ .int __load_st
+ .int __load_st
+ .int __load_en
+ .int __bss_en
+ .int _start
+ // mode
+ .int 0
+ // width
+ .int 0
+ // height
+ .int 0
+ // depth
+ .int 0
+
+ .code32
+ .section .text
+
+ /* Kernel Entry Point */
+.global _start
+_start:
+ // Setup stack ASAP
+ mov $stack_end,%esp
+
+ // Load GDT ASAP
+ lgdt gdtr
+ ljmp $0x8,$.Lloadcs
+.Lloadcs:
+ mov $0x10,%eax
+ mov %eax,%ds
+ mov %eax,%es
+ mov %eax,%fs
+ mov %eax,%gs
+ mov %eax,%ss
+
+ // Fixup the IDT to the ridiculous i386 layout
+ xor %ebx,%ebx
+.Lnextidt:
+ mov idt_00(,%ebx,8),%eax
+ shr $16,%eax
+ movw $0x8,idt_00+2(,%ebx,8)
+ movw $0x8E00,idt_00+4(,%ebx,8)
+ movw %ax,idt_00+6(,%ebx,8)
+ add $1,%ebx
+ cmp $32,%ebx
+ jl .Lnextidt
+
+ // Load IDTR
+ push $idt_00
+ push $((32 * 8 - 1) << 16)
+ lidt 2(%esp)
+ add $8,%esp
+
+ /*
+ * Don't worry about stack frame, assume everthing
+ * is garbage when we return, we won't need it.
+ */
+ call main
+
+ /* output any non-zero result in eax to isa-debug-exit device */
+ test %al, %al
+ jz 1f
+ out %ax, $0xf4
+
+1: /* QEMU ACPI poweroff */
+ mov $0x604,%edx
+ mov $0x2000,%eax
+ out %ax,%dx
+ hlt
+ jmp 1b
+
+ /*
+ * Helper Functions
+ */
+
+ /* Output a single character to serial port */
+ .global __sys_outc
+__sys_outc:
+ pushl %ebp
+ movl %esp, %ebp
+ out %al,$0xE9
+ movl %ebp, %esp
+ popl %ebp
+ ret
+
+
+ /* Interrupt Descriptor Table */
+
+ .section .data
+ .align 16
+
+idt_00: .int 0, 0
+idt_01: .int 0, 0
+idt_02: .int 0, 0
+idt_03: .int 0, 0
+idt_04: .int 0, 0
+idt_05: .int 0, 0
+idt_06: .int 0, 0 /* intr_6_opcode, Invalid Opcode */
+idt_07: .int 0, 0
+idt_08: .int 0, 0
+idt_09: .int 0, 0
+idt_0A: .int 0, 0
+idt_0B: .int 0, 0
+idt_0C: .int 0, 0
+idt_0D: .int 0, 0
+idt_0E: .int 0, 0
+idt_0F: .int 0, 0
+idt_10: .int 0, 0
+idt_11: .int 0, 0
+idt_12: .int 0, 0
+idt_13: .int 0, 0
+idt_14: .int 0, 0
+idt_15: .int 0, 0
+idt_16: .int 0, 0
+idt_17: .int 0, 0
+idt_18: .int 0, 0
+idt_19: .int 0, 0
+idt_1A: .int 0, 0
+idt_1B: .int 0, 0
+idt_1C: .int 0, 0
+idt_1D: .int 0, 0
+idt_1E: .int 0, 0
+idt_1F: .int 0, 0
+
+gdt:
+ .short 0
+gdtr:
+ .short gdt_en - gdt - 1
+ .int gdt
+
+ // Code
+ .short 0xFFFF
+ .short 0
+ .byte 0
+ .byte 0x9b
+ .byte 0xCF
+ .byte 0
+
+ // Data
+ .short 0xFFFF
+ .short 0
+ .byte 0
+ .byte 0x93
+ .byte 0xCF
+ .byte 0
+
+gdt_en:
+
+ .section .bss
+ .align 16
+
+stack: .space 65536
+stack_end:
diff --git a/tests/tcg/i386/system/hello.c b/tests/tcg/i386/system/hello.c
new file mode 100644
index 0000000000..821dc0ef09
--- /dev/null
+++ b/tests/tcg/i386/system/hello.c
@@ -0,0 +1,14 @@
+/*
+ * Hello World, system test version
+ *
+ * We don't have the benefit of libc, just builtin C primitives and
+ * whatever is in minilib.
+ */
+
+#include <minilib.h>
+
+int main(void)
+{
+ ml_printf("Hello World\n");
+ return 0;
+}
diff --git a/tests/tcg/i386/system/kernel.ld b/tests/tcg/i386/system/kernel.ld
new file mode 100644
index 0000000000..92de525e93
--- /dev/null
+++ b/tests/tcg/i386/system/kernel.ld
@@ -0,0 +1,23 @@
+SECTIONS {
+ . = 0x100000;
+
+ .text : {
+ __load_st = .;
+ *(.head)
+ *(.text)
+ }
+
+ .rodata : {
+ *(.rodata)
+ }
+
+ .data : {
+ *(.data)
+ __load_en = .;
+ }
+
+ .bss : {
+ *(.bss)
+ __bss_en = .;
+ }
+}
--
2.20.1
- [Qemu-devel] [PULL 00/26] final testing updates for 4.0, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 18/26] tests/tcg/cris: comment out the ccs test, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 23/26] tests/tcg/i386: add memory test to exercise softmmu, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 24/26] tests/tcg/arm: account for pauth randomness, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 17/26] tests/tcg: split cris tests into bare and libc directories, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 20/26] tests/tcg: enable cris base user-mode tests, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 21/26] tests/tcg: provide a minilib for system tests, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 22/26] tests/tcg/i386: add system mode Hello World test,
Alex Bennée <=
- [Qemu-devel] [PULL 12/26] tests/docker: add debian-xtensa-cross image, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 26/26] .travis.yml: add softmmu check-tcg tests, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 19/26] tests/tcg/cris: align mul operations, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 25/26] .travis.yml: separate softfloat from check-tcg, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 13/26] tests/tcg/xtensa: enable system tests, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 06/26] tests/tcg: add softmmu awareness to Makefile, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 03/26] .travis.yml: reduce the module builds to major architectures, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 01/26] travis: Bump Xcode 10 image to 10.2, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 02/26] .travis.yml: combine docs and tools build with out-of-tree, Alex Bennée, 2019/03/12
- [Qemu-devel] [PULL 09/26] tests/tcg: split run-test into user and system variants, Alex Bennée, 2019/03/12