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tests: Multiboot mmap test case

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This adds a test case for Multiboot memory map in the tests/multiboot
directory, where future i386 test kernels can be dropped. Because this
requires an x86 build host and an installed 32 bit libgcc, the test is
not part of a regular 'make check'.

The reference output for the test is verified against test runs of the
same multiboot kernel booted by some GRUB 0.97.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2013-06-27 13:50:05 +02:00
parent d7b7e58009
commit d1f3a23bfa
9 changed files with 584 additions and 0 deletions
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18
tests/multiboot/Makefile Normal file
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CC=gcc
CCFLAGS=-m32 -Wall -Wextra -Werror -fno-stack-protector -nostdinc -fno-builtin
ASFLAGS=-m32
LD=ld
LDFLAGS=-melf_i386 -T link.ld
LIBS=$(shell $(CC) $(CCFLAGS) -print-libgcc-file-name)
all: mmap.elf
mmap.elf: start.o mmap.o libc.o
$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
%.o: %.c
$(CC) $(CCFLAGS) -c -o $@ $^
%.o: %.S
$(CC) $(ASFLAGS) -c -o $@ $^

139
tests/multiboot/libc.c Normal file
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/*
* Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "libc.h"
static void print_char(char c)
{
outb(0xe9, c);
}
static void print_str(char *s)
{
while (*s) {
print_char(*s++);
}
}
static void print_num(uint64_t value, int base)
{
char digits[] = "0123456789abcdef";
char buf[32] = { 0 };
int i = sizeof(buf) - 2;
do {
buf[i--] = digits[value % base];
value /= base;
} while (value);
print_str(&buf[i + 1]);
}
void printf(const char *fmt, ...)
{
va_list ap;
uint64_t val;
char *str;
int base;
int has_long;
int alt_form;
va_start(ap, fmt);
for (; *fmt; fmt++) {
if (*fmt != '%') {
print_char(*fmt);
continue;
}
fmt++;
if (*fmt == '#') {
fmt++;
alt_form = 1;
} else {
alt_form = 0;
}
if (*fmt == 'l') {
fmt++;
if (*fmt == 'l') {
fmt++;
has_long = 2;
} else {
has_long = 1;
}
} else {
has_long = 0;
}
switch (*fmt) {
case 'x':
case 'p':
base = 16;
goto convert_number;
case 'd':
case 'i':
case 'u':
base = 10;
goto convert_number;
case 'o':
base = 8;
goto convert_number;
convert_number:
switch (has_long) {
case 0:
val = va_arg(ap, unsigned int);
break;
case 1:
val = va_arg(ap, unsigned long);
break;
case 2:
val = va_arg(ap, unsigned long long);
break;
}
if (alt_form && base == 16) {
print_str("0x");
}
print_num(val, base);
break;
case 's':
str = va_arg(ap, char*);
print_str(str);
break;
case '%':
print_char(*fmt);
break;
default:
print_char('%');
print_char(*fmt);
break;
}
}
va_end(ap);
}

61
tests/multiboot/libc.h Normal file
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/*
* Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef LIBC_H
#define LIBC_H
/* Integer types */
typedef unsigned long long uint64_t;
typedef unsigned int uint32_t;
typedef unsigned short uint16_t;
typedef unsigned char uint8_t;
typedef signed long long int64_t;
typedef signed int int32_t;
typedef signed short int16_t;
typedef signed char int8_t;
typedef uint32_t uintptr_t;
/* stdarg.h */
typedef __builtin_va_list va_list;
#define va_start(ap, X) __builtin_va_start(ap, X)
#define va_arg(ap, type) __builtin_va_arg(ap, type)
#define va_end(ap) __builtin_va_end(ap)
/* Port I/O functions */
static inline void outb(uint16_t port, uint8_t data)
{
asm volatile ("outb %0, %1" : : "a" (data), "Nd" (port));
}
/* Misc functions */
void printf(const char *fmt, ...);
#endif

19
tests/multiboot/link.ld Normal file
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ENTRY(_start)
SECTIONS
{
. = 0x100000;
.text : {
*(multiboot)
*(.text)
}
.data ALIGN(4096) : {
*(.data)
}
.rodata ALIGN(4096) : {
*(.rodata)
}
.bss ALIGN(4096) : {
*(.bss)
}
}

56
tests/multiboot/mmap.c Normal file
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/*
* Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "libc.h"
#include "multiboot.h"
int test_main(uint32_t magic, struct mb_info *mbi)
{
uintptr_t entry_addr;
struct mb_mmap_entry *entry;
(void) magic;
printf("Lower memory: %dk\n", mbi->mem_lower);
printf("Upper memory: %dk\n", mbi->mem_upper);
printf("\ne820 memory map:\n");
for (entry_addr = mbi->mmap_addr;
entry_addr < mbi->mmap_addr + mbi->mmap_length;
entry_addr += entry->size + 4)
{
entry = (struct mb_mmap_entry*) entry_addr;
printf("%#llx - %#llx: type %d [entry size: %d]\n",
entry->base_addr,
entry->base_addr + entry->length,
entry->type,
entry->size);
}
printf("\nmmap start: %#x\n", mbi->mmap_addr);
printf("mmap end: %#x\n", mbi->mmap_addr + mbi->mmap_length);
printf("real mmap end: %#x\n", entry_addr);
return 0;
}

93
tests/multiboot/mmap.out Normal file
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=== Running test case: mmap.elf ===
Lower memory: 639k
Upper memory: 130040k
e820 memory map:
0x0 - 0x9fc00: type 1 [entry size: 20]
0x9fc00 - 0xa0000: type 2 [entry size: 20]
0xf0000 - 0x100000: type 2 [entry size: 20]
0x100000 - 0x7ffe000: type 1 [entry size: 20]
0x7ffe000 - 0x8000000: type 2 [entry size: 20]
0xfffc0000 - 0x100000000: type 2 [entry size: 20]
mmap start: 0x9000
mmap end: 0x9090
real mmap end: 0x9090
=== Running test case: mmap.elf -m 1.1M ===
Lower memory: 639k
Upper memory: 96k
e820 memory map:
0x0 - 0x9fc00: type 1 [entry size: 20]
0x9fc00 - 0xa0000: type 2 [entry size: 20]
0xf0000 - 0x100000: type 2 [entry size: 20]
0x100000 - 0x118000: type 1 [entry size: 20]
0x118000 - 0x11a000: type 2 [entry size: 20]
0xfffc0000 - 0x100000000: type 2 [entry size: 20]
mmap start: 0x9000
mmap end: 0x9090
real mmap end: 0x9090
=== Running test case: mmap.elf -m 2G ===
Lower memory: 639k
Upper memory: 2096120k
e820 memory map:
0x0 - 0x9fc00: type 1 [entry size: 20]
0x9fc00 - 0xa0000: type 2 [entry size: 20]
0xf0000 - 0x100000: type 2 [entry size: 20]
0x100000 - 0x7fffe000: type 1 [entry size: 20]
0x7fffe000 - 0x80000000: type 2 [entry size: 20]
0xfffc0000 - 0x100000000: type 2 [entry size: 20]
mmap start: 0x9000
mmap end: 0x9090
real mmap end: 0x9090
=== Running test case: mmap.elf -m 4G ===
Lower memory: 639k
Upper memory: 3668984k
e820 memory map:
0x0 - 0x9fc00: type 1 [entry size: 20]
0x9fc00 - 0xa0000: type 2 [entry size: 20]
0xf0000 - 0x100000: type 2 [entry size: 20]
0x100000 - 0xdfffe000: type 1 [entry size: 20]
0xdfffe000 - 0xe0000000: type 2 [entry size: 20]
0xfffc0000 - 0x100000000: type 2 [entry size: 20]
0x100000000 - 0x120000000: type 1 [entry size: 20]
mmap start: 0x9000
mmap end: 0x90a8
real mmap end: 0x90a8
=== Running test case: mmap.elf -m 8G ===
Lower memory: 639k
Upper memory: 3668984k
e820 memory map:
0x0 - 0x9fc00: type 1 [entry size: 20]
0x9fc00 - 0xa0000: type 2 [entry size: 20]
0xf0000 - 0x100000: type 2 [entry size: 20]
0x100000 - 0xdfffe000: type 1 [entry size: 20]
0xdfffe000 - 0xe0000000: type 2 [entry size: 20]
0xfffc0000 - 0x100000000: type 2 [entry size: 20]
0x100000000 - 0x220000000: type 1 [entry size: 20]
mmap start: 0x9000
mmap end: 0x90a8
real mmap end: 0x90a8

66
tests/multiboot/multiboot.h Normal file
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/*
* Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MULTIBOOT_H
#define MULTIBOOT_H
#include "libc.h"
struct mb_info {
uint32_t flags;
uint32_t mem_lower;
uint32_t mem_upper;
uint32_t boot_device;
uint32_t cmdline;
uint32_t mods_count;
uint32_t mods_addr;
char syms[16];
uint32_t mmap_length;
uint32_t mmap_addr;
uint32_t drives_length;
uint32_t drives_addr;
uint32_t config_table;
uint32_t boot_loader_name;
uint32_t apm_table;
uint32_t vbe_control_info;
uint32_t vbe_mode_info;
uint16_t vbe_mode;
uint16_t vbe_interface_seg;
uint16_t vbe_interface_off;
uint16_t vbe_interface_len;
} __attribute__((packed));
struct mb_module {
uint32_t mod_start;
uint32_t mod_end;
uint32_t string;
uint32_t reserved;
} __attribute__((packed));
struct mb_mmap_entry {
uint32_t size;
uint64_t base_addr;
uint64_t length;
uint32_t type;
} __attribute__((packed));
#endif

81
tests/multiboot/run_test.sh Executable file
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#!/bin/bash
# Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
QEMU=${QEMU:-"../../x86_64-softmmu/qemu-system-x86_64"}
run_qemu() {
local kernel=$1
shift
echo -e "\n\n=== Running test case: $kernel $@ ===\n" >> test.log
$QEMU \
-kernel $kernel \
-display none \
-device isa-debugcon,chardev=stdio \
-chardev file,path=test.out,id=stdio \
-device isa-debug-exit,iobase=0xf4,iosize=0x4 \
"$@"
ret=$?
cat test.out >> test.log
}
mmap() {
run_qemu mmap.elf
run_qemu mmap.elf -m 1.1M
run_qemu mmap.elf -m 2G
run_qemu mmap.elf -m 4G
run_qemu mmap.elf -m 8G
}
make all
for t in mmap; do
echo > test.log
$t
debugexit=$((ret & 0x1))
ret=$((ret >> 1))
pass=1
if [ $debugexit != 1 ]; then
echo -e "\e[31m ?? \e[0m $t (no debugexit used, exit code $ret)"
pass=0
elif [ $ret != 0 ]; then
echo -e "\e[31mFAIL\e[0m $t (exit code $ret)"
pass=0
fi
if ! diff $t.out test.log > /dev/null 2>&1; then
echo -e "\e[31mFAIL\e[0m $t (output difference)"
diff -u $t.out test.log
pass=0
fi
if [ $pass == 1 ]; then
echo -e "\e[32mPASS\e[0m $t"
fi
done

51
tests/multiboot/start.S Normal file
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/*
* Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
.section multiboot
#define MB_MAGIC 0x1badb002
#define MB_FLAGS 0x0
#define MB_CHECKSUM -(MB_MAGIC + MB_FLAGS)
.align 4
.int MB_MAGIC
.int MB_FLAGS
.int MB_CHECKSUM
.section .text
.global _start
_start:
mov $stack, %esp
push %ebx
push %eax
call test_main
/* Test device exit */
outl %eax, $0xf4
cli
hlt
jmp .
.section bss
.space 8192
stack: