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qemu/tests/libqtest.h
John Snow 7a6a740d8d qtest: Add base64 encoded read/write 
For larger pieces of data that won't need to be debugged and
viewing the hex nibbles is unlikely to be useful, we can encode
data using base64 instead of encoding each byte as %02x, which
leads to some space savings and faster reads/writes.

For now, the default is left as hex nibbles in memwrite() and memread().
For the purposes of making qtest io easier to read and debug, some
callers may want to specify using the old encoding format for small
patches of data where the savings from base64 wouldn't be that profound.

memwrite/memread use a data encoding that takes 2x the size of the original
buffer, but base64 uses "only" (4/3)x, so for larger buffers we can save a
decent amount of time and space.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1430864578-22072-3-git-send-email-jsnow@redhat.com
2015-05-22 15:58:22 -04:00

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/*
* QTest
*
* Copyright IBM, Corp. 2012
* Copyright Red Hat, Inc. 2012
* Copyright SUSE LINUX Products GmbH 2013
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
* Paolo Bonzini <pbonzini@redhat.com>
* Andreas Färber <afaerber@suse.de>
*
* 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_H
#define LIBQTEST_H
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdarg.h>
#include <sys/types.h>
#include "qapi/qmp/qdict.h"
#include "glib-compat.h"
typedef struct QTestState QTestState;
extern QTestState *global_qtest;
/**
* qtest_init:
* @extra_args: other arguments to pass to QEMU.
*
* Returns: #QTestState instance.
*/
QTestState *qtest_init(const char *extra_args);
/**
* qtest_quit:
* @s: #QTestState instance to operate on.
*
* Shut down the QEMU process associated to @s.
*/
void qtest_quit(QTestState *s);
/**
* qtest_qmp_discard_response:
* @s: #QTestState instance to operate on.
* @fmt...: QMP message to send to qemu
*
* Sends a QMP message to QEMU and consumes the response.
*/
void qtest_qmp_discard_response(QTestState *s, const char *fmt, ...);
/**
* qtest_qmp:
* @s: #QTestState instance to operate on.
* @fmt...: QMP message to send to qemu
*
* Sends a QMP message to QEMU and returns the response.
*/
QDict *qtest_qmp(QTestState *s, const char *fmt, ...);
/**
* qtest_async_qmp:
* @s: #QTestState instance to operate on.
* @fmt...: QMP message to send to qemu
*
* Sends a QMP message to QEMU and leaves the response in the stream.
*/
void qtest_async_qmp(QTestState *s, const char *fmt, ...);
/**
* qtest_qmpv_discard_response:
* @s: #QTestState instance to operate on.
* @fmt: QMP message to send to QEMU
* @ap: QMP message arguments
*
* Sends a QMP message to QEMU and consumes the response.
*/
void qtest_qmpv_discard_response(QTestState *s, const char *fmt, va_list ap);
/**
* qtest_qmpv:
* @s: #QTestState instance to operate on.
* @fmt: QMP message to send to QEMU
* @ap: QMP message arguments
*
* Sends a QMP message to QEMU and returns the response.
*/
QDict *qtest_qmpv(QTestState *s, const char *fmt, va_list ap);
/**
* qtest_async_qmpv:
* @s: #QTestState instance to operate on.
* @fmt: QMP message to send to QEMU
* @ap: QMP message arguments
*
* Sends a QMP message to QEMU and leaves the response in the stream.
*/
void qtest_async_qmpv(QTestState *s, const char *fmt, va_list ap);
/**
* qtest_receive:
* @s: #QTestState instance to operate on.
*
* Reads a QMP message from QEMU and returns the response.
*/
QDict *qtest_qmp_receive(QTestState *s);
/**
* qtest_qmp_eventwait:
* @s: #QTestState instance to operate on.
* @s: #event event to wait for.
*
* Continuosly polls for QMP responses until it receives the desired event.
*/
void qtest_qmp_eventwait(QTestState *s, const char *event);
/**
* qtest_get_irq:
* @s: #QTestState instance to operate on.
* @num: Interrupt to observe.
*
* Returns: The level of the @num interrupt.
*/
bool qtest_get_irq(QTestState *s, int num);
/**
* qtest_irq_intercept_in:
* @s: #QTestState instance to operate on.
* @string: QOM path of a device.
*
* Associate qtest irqs with the GPIO-in pins of the device
* whose path is specified by @string.
*/
void qtest_irq_intercept_in(QTestState *s, const char *string);
/**
* qtest_irq_intercept_out:
* @s: #QTestState instance to operate on.
* @string: QOM path of a device.
*
* Associate qtest irqs with the GPIO-out pins of the device
* whose path is specified by @string.
*/
void qtest_irq_intercept_out(QTestState *s, const char *string);
/**
* qtest_outb:
* @s: #QTestState instance to operate on.
* @addr: I/O port to write to.
* @value: Value being written.
*
* Write an 8-bit value to an I/O port.
*/
void qtest_outb(QTestState *s, uint16_t addr, uint8_t value);
/**
* qtest_outw:
* @s: #QTestState instance to operate on.
* @addr: I/O port to write to.
* @value: Value being written.
*
* Write a 16-bit value to an I/O port.
*/
void qtest_outw(QTestState *s, uint16_t addr, uint16_t value);
/**
* qtest_outl:
* @s: #QTestState instance to operate on.
* @addr: I/O port to write to.
* @value: Value being written.
*
* Write a 32-bit value to an I/O port.
*/
void qtest_outl(QTestState *s, uint16_t addr, uint32_t value);
/**
* qtest_inb:
* @s: #QTestState instance to operate on.
* @addr: I/O port to read from.
*
* Returns an 8-bit value from an I/O port.
*/
uint8_t qtest_inb(QTestState *s, uint16_t addr);
/**
* qtest_inw:
* @s: #QTestState instance to operate on.
* @addr: I/O port to read from.
*
* Returns a 16-bit value from an I/O port.
*/
uint16_t qtest_inw(QTestState *s, uint16_t addr);
/**
* qtest_inl:
* @s: #QTestState instance to operate on.
* @addr: I/O port to read from.
*
* Returns a 32-bit value from an I/O port.
*/
uint32_t qtest_inl(QTestState *s, uint16_t addr);
/**
* qtest_writeb:
* @s: #QTestState instance to operate on.
* @addr: Guest address to write to.
* @value: Value being written.
*
* Writes an 8-bit value to memory.
*/
void qtest_writeb(QTestState *s, uint64_t addr, uint8_t value);
/**
* qtest_writew:
* @s: #QTestState instance to operate on.
* @addr: Guest address to write to.
* @value: Value being written.
*
* Writes a 16-bit value to memory.
*/
void qtest_writew(QTestState *s, uint64_t addr, uint16_t value);
/**
* qtest_writel:
* @s: #QTestState instance to operate on.
* @addr: Guest address to write to.
* @value: Value being written.
*
* Writes a 32-bit value to memory.
*/
void qtest_writel(QTestState *s, uint64_t addr, uint32_t value);
/**
* qtest_writeq:
* @s: #QTestState instance to operate on.
* @addr: Guest address to write to.
* @value: Value being written.
*
* Writes a 64-bit value to memory.
*/
void qtest_writeq(QTestState *s, uint64_t addr, uint64_t value);
/**
* qtest_readb:
* @s: #QTestState instance to operate on.
* @addr: Guest address to read from.
*
* Reads an 8-bit value from memory.
*
* Returns: Value read.
*/
uint8_t qtest_readb(QTestState *s, uint64_t addr);
/**
* qtest_readw:
* @s: #QTestState instance to operate on.
* @addr: Guest address to read from.
*
* Reads a 16-bit value from memory.
*
* Returns: Value read.
*/
uint16_t qtest_readw(QTestState *s, uint64_t addr);
/**
* qtest_readl:
* @s: #QTestState instance to operate on.
* @addr: Guest address to read from.
*
* Reads a 32-bit value from memory.
*
* Returns: Value read.
*/
uint32_t qtest_readl(QTestState *s, uint64_t addr);
/**
* qtest_readq:
* @s: #QTestState instance to operate on.
* @addr: Guest address to read from.
*
* Reads a 64-bit value from memory.
*
* Returns: Value read.
*/
uint64_t qtest_readq(QTestState *s, uint64_t addr);
/**
* qtest_memread:
* @s: #QTestState instance to operate on.
* @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.
*/
void qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size);
/**
* qtest_bufread:
* @s: #QTestState instance to operate on.
* @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 and receive using a base64 encoding.
*/
void qtest_bufread(QTestState *s, uint64_t addr, void *data, size_t size);
/**
* qtest_memwrite:
* @s: #QTestState instance to operate on.
* @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.
*/
void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size);
/**
* qtest_bufwrite:
* @s: #QTestState instance to operate on.
* @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 and transmit using a base64 encoding.
*/
void qtest_bufwrite(QTestState *s, uint64_t addr,
const void *data, size_t size);
/**
* qtest_memset:
* @s: #QTestState instance to operate on.
* @addr: Guest address to write to.
* @patt: Byte pattern to fill the guest memory region with.
* @size: Number of bytes to write.
*
* Write a pattern to guest memory.
*/
void qtest_memset(QTestState *s, uint64_t addr, uint8_t patt, size_t size);
/**
* qtest_clock_step_next:
* @s: #QTestState instance to operate on.
*
* Advance the QEMU_CLOCK_VIRTUAL to the next deadline.
*
* Returns: The current value of the QEMU_CLOCK_VIRTUAL in nanoseconds.
*/
int64_t qtest_clock_step_next(QTestState *s);
/**
* qtest_clock_step:
* @s: QTestState instance to operate on.
* @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.
*/
int64_t qtest_clock_step(QTestState *s, int64_t step);
/**
* qtest_clock_set:
* @s: QTestState instance to operate on.
* @val: Nanoseconds value to advance the clock to.
*
* Advance the QEMU_CLOCK_VIRTUAL to @val nanoseconds since the VM was launched.
*
* Returns: The current value of the QEMU_CLOCK_VIRTUAL in nanoseconds.
*/
int64_t qtest_clock_set(QTestState *s, int64_t val);
/**
* qtest_get_arch:
*
* Returns: The architecture for the QEMU executable under test.
*/
const char *qtest_get_arch(void);
/**
* qtest_add_func:
* @str: Test case path.
* @fn: Test case function
*
* Add a GTester testcase with the given name and function.
* The path is prefixed with the architecture under test, as
* returned by qtest_get_arch().
*/
void qtest_add_func(const char *str, void (*fn));
/**
* qtest_add_data_func:
* @str: Test case path.
* @data: Test case data
* @fn: Test case function
*
* Add a GTester testcase with the given name, data and function.
* The path is prefixed with the architecture under test, as
* returned by qtest_get_arch().
*/
void qtest_add_data_func(const char *str, const void *data, void (*fn));
/**
* qtest_add:
* @testpath: Test case path
* @Fixture: Fixture type
* @tdata: Test case data
* @fsetup: Test case setup function
* @ftest: Test case function
* @fteardown: Test case teardown function
*
* Add a GTester testcase with the given name, data and functions.
* The path is prefixed with the architecture under test, as
* returned by qtest_get_arch().
*/
#define qtest_add(testpath, Fixture, tdata, fsetup, ftest, fteardown) \
do { \
char *path = g_strdup_printf("/%s/%s", qtest_get_arch(), testpath); \
g_test_add(path, Fixture, tdata, fsetup, ftest, fteardown); \
g_free(path); \
} while (0)
/**
* 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)
{
qtest_quit(global_qtest);
global_qtest = NULL;
}
/**
* qmp:
* @fmt...: QMP message to send to qemu
*
* Sends a QMP message to QEMU and returns the response.
*/
QDict *qmp(const char *fmt, ...);
/**
* qmp_async:
* @fmt...: QMP message to send to qemu
*
* Sends a QMP message to QEMU and leaves the response in the stream.
*/
void qmp_async(const char *fmt, ...);
/**
* qmp_discard_response:
* @fmt...: QMP message to send to qemu
*
* Sends a QMP message to QEMU and consumes the response.
*/
void qmp_discard_response(const char *fmt, ...);
/**
* qmp_receive:
*
* Reads a QMP message from QEMU and returns the response.
*/
static inline QDict *qmp_receive(void)
{
return qtest_qmp_receive(global_qtest);
}
/**
* qmp_eventwait:
* @s: #event event to wait for.
*
* Continuosly 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);
}
/**
* irq_intercept_in:
* @string: QOM path of a device.
*
* Associate qtest irqs with the GPIO-in pins of the device
* whose path is specified by @string.
*/
static inline void irq_intercept_in(const char *string)
{
qtest_irq_intercept_in(global_qtest, string);
}
/**
* qtest_irq_intercept_out:
* @string: QOM path of a device.
*
* Associate qtest irqs with the GPIO-out pins of the device
* whose path is specified by @string.
*/
static inline void irq_intercept_out(const char *string)
{
qtest_irq_intercept_out(global_qtest, string);
}
/**
* 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);
}
/**
* bufread:
* @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, receive using a base64 encoding.
*/
static inline void bufread(uint64_t addr, void *data, size_t size)
{
qtest_bufread(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);
}
/**
* bufwrite:
* @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, transmit using a base64 encoding.
*/
static inline void bufwrite(uint64_t addr, const void *data, size_t size)
{
qtest_bufwrite(global_qtest, addr, data, size);
}
/**
* qmemset:
* @addr: Guest address to write to.
* @patt: Byte pattern to fill the guest memory region with.
* @size: Number of bytes to write.
*
* Write a pattern to guest memory.
*/
static inline void qmemset(uint64_t addr, uint8_t patt, size_t size)
{
qtest_memset(global_qtest, addr, patt, 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);
}
/**
* clock_set:
* @val: Nanoseconds value to advance the clock to.
*
* Advance the QEMU_CLOCK_VIRTUAL to @val nanoseconds since the VM was launched.
*
* Returns: The current value of the QEMU_CLOCK_VIRTUAL in nanoseconds.
*/
static inline int64_t clock_set(int64_t val)
{
return qtest_clock_set(global_qtest, val);
}
/**
* qtest_big_endian:
*
* Returns: True if the architecture under test has a big endian configuration.
*/
bool qtest_big_endian(void);
#endif
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