qemu/tests/qtest/libqtest-single.h
Xuzhou Cheng 39f0e991e1 tests/qtest: libqtest: Adapt global_qtest declaration for win32
Commit dd21074972 ("tests/libqtest: Use libqtest-single.h in tests that require global_qtest")
moved global_qtest to libqtest-single.h, by declaring global_qtest
attribute to be common and weak.

This trick unfortunately does not work on Windows, and building
qtest test cases results in multiple definition errors of the weak
symbol global_qtest, as Windows PE does not have the concept of
the so-called weak symbol like ELF in the *nix world.

However Windows does provide a trick to declare a variable to be
a common symbol, via __declspec(selectany) [1]. It does not provide
the "strong override weak" effect but we don't need it in our use
case anyway. So let's use it for win32.

[1] https://docs.microsoft.com/en-us/cpp/cpp/selectany

Signed-off-by: Xuzhou Cheng <xuzhou.cheng@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220925113032.1949844-33-bmeng.cn@gmail.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-27 20:51:21 +02:00

320 lines
6.2 KiB
C

/*
* QTest - wrappers for test with single QEMU instances
*
* Copyright IBM, Corp. 2012
* Copyright Red Hat, Inc. 2012
* Copyright SUSE LINUX Products GmbH 2013
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef LIBQTEST_SINGLE_H
#define LIBQTEST_SINGLE_H
#include "libqtest.h"
#ifndef _WIN32
QTestState *global_qtest __attribute__((common, weak));
#else
__declspec(selectany) QTestState *global_qtest;
#endif
/**
* qtest_start:
* @args: other arguments to pass to QEMU
*
* Start QEMU and assign the resulting #QTestState to a global variable.
* The global variable is used by "shortcut" functions documented below.
*
* Returns: #QTestState instance.
*/
static inline QTestState *qtest_start(const char *args)
{
global_qtest = qtest_init(args);
return global_qtest;
}
/**
* qtest_end:
*
* Shut down the QEMU process started by qtest_start().
*/
static inline void qtest_end(void)
{
if (!global_qtest) {
return;
}
qtest_quit(global_qtest);
global_qtest = NULL;
}
/**
* qmp:
* @fmt...: QMP message to send to qemu, formatted like
* qobject_from_jsonf_nofail(). See parse_interpolation() for what's
* supported after '%'.
*
* Sends a QMP message to QEMU and returns the response.
*/
G_GNUC_PRINTF(1, 2)
static inline QDict *qmp(const char *fmt, ...)
{
va_list ap;
QDict *response;
va_start(ap, fmt);
response = qtest_vqmp(global_qtest, fmt, ap);
va_end(ap);
return response;
}
/**
* qmp_eventwait:
* @s: #event event to wait for.
*
* Continuously polls for QMP responses until it receives the desired event.
*/
static inline void qmp_eventwait(const char *event)
{
return qtest_qmp_eventwait(global_qtest, event);
}
/**
* get_irq:
* @num: Interrupt to observe.
*
* Returns: The level of the @num interrupt.
*/
static inline bool get_irq(int num)
{
return qtest_get_irq(global_qtest, num);
}
/**
* outb:
* @addr: I/O port to write to.
* @value: Value being written.
*
* Write an 8-bit value to an I/O port.
*/
static inline void outb(uint16_t addr, uint8_t value)
{
qtest_outb(global_qtest, addr, value);
}
/**
* outw:
* @addr: I/O port to write to.
* @value: Value being written.
*
* Write a 16-bit value to an I/O port.
*/
static inline void outw(uint16_t addr, uint16_t value)
{
qtest_outw(global_qtest, addr, value);
}
/**
* outl:
* @addr: I/O port to write to.
* @value: Value being written.
*
* Write a 32-bit value to an I/O port.
*/
static inline void outl(uint16_t addr, uint32_t value)
{
qtest_outl(global_qtest, addr, value);
}
/**
* inb:
* @addr: I/O port to read from.
*
* Reads an 8-bit value from an I/O port.
*
* Returns: Value read.
*/
static inline uint8_t inb(uint16_t addr)
{
return qtest_inb(global_qtest, addr);
}
/**
* inw:
* @addr: I/O port to read from.
*
* Reads a 16-bit value from an I/O port.
*
* Returns: Value read.
*/
static inline uint16_t inw(uint16_t addr)
{
return qtest_inw(global_qtest, addr);
}
/**
* inl:
* @addr: I/O port to read from.
*
* Reads a 32-bit value from an I/O port.
*
* Returns: Value read.
*/
static inline uint32_t inl(uint16_t addr)
{
return qtest_inl(global_qtest, addr);
}
/**
* writeb:
* @addr: Guest address to write to.
* @value: Value being written.
*
* Writes an 8-bit value to guest memory.
*/
static inline void writeb(uint64_t addr, uint8_t value)
{
qtest_writeb(global_qtest, addr, value);
}
/**
* writew:
* @addr: Guest address to write to.
* @value: Value being written.
*
* Writes a 16-bit value to guest memory.
*/
static inline void writew(uint64_t addr, uint16_t value)
{
qtest_writew(global_qtest, addr, value);
}
/**
* writel:
* @addr: Guest address to write to.
* @value: Value being written.
*
* Writes a 32-bit value to guest memory.
*/
static inline void writel(uint64_t addr, uint32_t value)
{
qtest_writel(global_qtest, addr, value);
}
/**
* writeq:
* @addr: Guest address to write to.
* @value: Value being written.
*
* Writes a 64-bit value to guest memory.
*/
static inline void writeq(uint64_t addr, uint64_t value)
{
qtest_writeq(global_qtest, addr, value);
}
/**
* readb:
* @addr: Guest address to read from.
*
* Reads an 8-bit value from guest memory.
*
* Returns: Value read.
*/
static inline uint8_t readb(uint64_t addr)
{
return qtest_readb(global_qtest, addr);
}
/**
* readw:
* @addr: Guest address to read from.
*
* Reads a 16-bit value from guest memory.
*
* Returns: Value read.
*/
static inline uint16_t readw(uint64_t addr)
{
return qtest_readw(global_qtest, addr);
}
/**
* readl:
* @addr: Guest address to read from.
*
* Reads a 32-bit value from guest memory.
*
* Returns: Value read.
*/
static inline uint32_t readl(uint64_t addr)
{
return qtest_readl(global_qtest, addr);
}
/**
* readq:
* @addr: Guest address to read from.
*
* Reads a 64-bit value from guest memory.
*
* Returns: Value read.
*/
static inline uint64_t readq(uint64_t addr)
{
return qtest_readq(global_qtest, addr);
}
/**
* memread:
* @addr: Guest address to read from.
* @data: Pointer to where memory contents will be stored.
* @size: Number of bytes to read.
*
* Read guest memory into a buffer.
*/
static inline void memread(uint64_t addr, void *data, size_t size)
{
qtest_memread(global_qtest, addr, data, size);
}
/**
* memwrite:
* @addr: Guest address to write to.
* @data: Pointer to the bytes that will be written to guest memory.
* @size: Number of bytes to write.
*
* Write a buffer to guest memory.
*/
static inline void memwrite(uint64_t addr, const void *data, size_t size)
{
qtest_memwrite(global_qtest, addr, data, size);
}
/**
* clock_step_next:
*
* Advance the QEMU_CLOCK_VIRTUAL to the next deadline.
*
* Returns: The current value of the QEMU_CLOCK_VIRTUAL in nanoseconds.
*/
static inline int64_t clock_step_next(void)
{
return qtest_clock_step_next(global_qtest);
}
/**
* clock_step:
* @step: Number of nanoseconds to advance the clock by.
*
* Advance the QEMU_CLOCK_VIRTUAL by @step nanoseconds.
*
* Returns: The current value of the QEMU_CLOCK_VIRTUAL in nanoseconds.
*/
static inline int64_t clock_step(int64_t step)
{
return qtest_clock_step(global_qtest, step);
}
#endif