Xen Test Framework: tests/fpu-exception-emulation/main.c File Reference

Xen Test Framework

FPU Exception Emulation - Emulation of FPU exceptions More...

#include <xtf.h>

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Data Structures
struct	test_cfg

Macros
#define	CR0_SYM(...) TOK_OR(X86_CR0_, ##__VA_ARGS__)

#define	CR0_MASK CR0_SYM(EM, MP, TS)

Functions
exinfo_t	probe_x87 (bool force)

exinfo_t	probe_x87_wait (bool force)

exinfo_t	probe_mmx (bool force)

exinfo_t	probe_sse (bool force)

static exinfo_t	probe_avx (bool force)

void	run_sequence (const struct test_cfg seq, unsigned int nr, unsigned int(fn)(bool), bool force, exinfo_t override)

void	run_tests (bool force)

void	test_main (void)
	To be implemented by each test, as its entry point. More...

Variables
const char	test_title [] = "FPU Exception Emulation"
	The title of the test. More...

static unsigned long	default_cr0

static const struct test_cfg	x87 []
	x87 coprocessor. More...

static const struct test_cfg	x87_wait []
	The x87 `wait` instruction. More...

static const struct test_cfg	mmx_sse []
	MMX and SSE instructions. More...

static const struct test_cfg	avx []
	AVX instructions. More...

Detailed Description

FPU Exception Emulation - Emulation of FPU exceptions

Definition in file main.c.

Macro Definition Documentation

◆ CR0_SYM

#define CR0_SYM ( ... ) TOK_OR(X86_CR0_, ##__VA_ARGS__)

Definition at line 40 of file main.c.

◆ CR0_MASK

#define CR0_MASK CR0_SYM(EM, MP, TS)

Definition at line 41 of file main.c.

Function Documentation

◆ probe_x87()

exinfo_t probe_x87 ( bool force )

Definition at line 67 of file main.c.

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◆ probe_x87_wait()

exinfo_t probe_x87_wait ( bool force )

Definition at line 100 of file main.c.

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◆ probe_mmx()

exinfo_t probe_mmx ( bool force )

Definition at line 132 of file main.c.

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◆ probe_sse()

exinfo_t probe_sse ( bool force )

Definition at line 148 of file main.c.

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◆ probe_avx()

static exinfo_t probe_avx ( bool force )

static

Definition at line 180 of file main.c.

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◆ run_sequence()

void run_sequence	(	const struct test_cfg *	seq,
		unsigned int	nr,
		unsigned int(*)(bool)	fn,
		bool	force,
		exinfo_t	override
	)

Definition at line 196 of file main.c.

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◆ run_tests()

void run_tests ( bool force )

Definition at line 224 of file main.c.

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◆ test_main()

void test_main ( void )

To be implemented by each test, as its entry point.

Definition at line 283 of file main.c.

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Variable Documentation

◆ test_title

const char test_title[] = "FPU Exception Emulation"

The title of the test.

Definition at line 38 of file main.c.

◆ default_cr0

unsigned long default_cr0

static

Definition at line 49 of file main.c.

◆ x87

const struct test_cfg x87[]

static

Initial value:

=
{
    { CR0_SYM(          ), 0 },
    { CR0_SYM(        TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(    MP    ), 0 },
    { CR0_SYM(    MP, TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(EM        ), EXINFO_SYM(NM, 0) },
    { CR0_SYM(EM,     TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(EM, MP    ), EXINFO_SYM(NM, 0) },
    { CR0_SYM(EM, MP, TS), EXINFO_SYM(NM, 0) },
}

x87 coprocessor.

Should raise #NM if emulation is enabled (no coprocessor available) or if the task has switched.

Definition at line 55 of file main.c.

◆ x87_wait

const struct test_cfg x87_wait[]

static

Initial value:

=
{
    { CR0_SYM(          ), 0 },
    { CR0_SYM(        TS), 0 },
    { CR0_SYM(    MP    ), 0 },
    { CR0_SYM(    MP, TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(EM        ), 0 },
    { CR0_SYM(EM,     TS), 0 },
    { CR0_SYM(EM, MP    ), 0 },
    { CR0_SYM(EM, MP, TS), EXINFO_SYM(NM, 0) },
}

The x87 wait instruction.

This instruction behaves differently, and should only raise #NM when monitoring the coprocessor and the task has switched.

Definition at line 88 of file main.c.

◆ mmx_sse

const struct test_cfg mmx_sse[]

static

Initial value:

=
{
    { CR0_SYM(          ), 0 },
    { CR0_SYM(        TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(    MP    ), 0 },
    { CR0_SYM(    MP, TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(EM        ), EXINFO_SYM(UD, 0) },
    { CR0_SYM(EM,     TS), EXINFO_SYM(UD, 0) },
    { CR0_SYM(EM, MP    ), EXINFO_SYM(UD, 0) },
    { CR0_SYM(EM, MP, TS), EXINFO_SYM(UD, 0) },
}

MMX and SSE instructions.

Emulation is unsupported (thus raising #UD), but #NM should be raised if the task has been switched.

Definition at line 120 of file main.c.

◆ avx

const struct test_cfg avx[]

static

Initial value:

=
{
    { CR0_SYM(          ), 0 },
    { CR0_SYM(        TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(    MP    ), 0 },
    { CR0_SYM(    MP, TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(EM        ), 0 },
    { CR0_SYM(EM,     TS), EXINFO_SYM(NM, 0) },
    { CR0_SYM(EM, MP    ), 0 },
    { CR0_SYM(EM, MP, TS), EXINFO_SYM(NM, 0) },
}

AVX instructions.

The emulation flag is meaningless, but #NM should be raised if the task has been switched.

Definition at line 168 of file main.c.