[mirror_ubuntu-eoan-kernel.git] / tools / testing / selftests / powerpc / ptrace / ptrace-gpr.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Ptrace test for GPR/FPR registers
 *
 * Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
 */
#include "ptrace.h"
#include "ptrace-gpr.h"
#include "reg.h"

/* Tracer and Tracee Shared Data */
int shm_id;
int *cptr, *pptr;

float a = FPR_1;
float b = FPR_2;
float c = FPR_3;

void gpr(void)
{
	unsigned long gpr_buf[18];
	float fpr_buf[32];

	cptr = (int *)shmat(shm_id, NULL, 0);

	asm __volatile__(
		ASM_LOAD_GPR_IMMED(gpr_1)
		ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
		:
		: [gpr_1]"i"(GPR_1), [flt_1] "b" (&a)
		: "memory", "r6", "r7", "r8", "r9", "r10",
		"r11", "r12", "r13", "r14", "r15", "r16", "r17",
		"r18", "r19", "r20", "r21", "r22", "r23", "r24",
		"r25", "r26", "r27", "r28", "r29", "r30", "r31"
		);

	cptr[1] = 1;

	while (!cptr[0])
		asm volatile("" : : : "memory");

	shmdt((void *)cptr);
	store_gpr(gpr_buf);
	store_fpr_single_precision(fpr_buf);

	if (validate_gpr(gpr_buf, GPR_3))
		exit(1);

	if (validate_fpr_float(fpr_buf, c))
		exit(1);

	exit(0);
}

int trace_gpr(pid_t child)
{
	unsigned long gpr[18];
	unsigned long fpr[32];

	FAIL_IF(start_trace(child));
	FAIL_IF(show_gpr(child, gpr));
	FAIL_IF(validate_gpr(gpr, GPR_1));
	FAIL_IF(show_fpr(child, fpr));
	FAIL_IF(validate_fpr(fpr, FPR_1_REP));
	FAIL_IF(write_gpr(child, GPR_3));
	FAIL_IF(write_fpr(child, FPR_3_REP));
	FAIL_IF(stop_trace(child));

	return TEST_PASS;
}

int ptrace_gpr(void)
{
	pid_t pid;
	int ret, status;

	shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT);
	pid = fork();
	if (pid < 0) {
		perror("fork() failed");
		return TEST_FAIL;
	}
	if (pid == 0)
		gpr();

	if (pid) {
		pptr = (int *)shmat(shm_id, NULL, 0);
		while (!pptr[1])
			asm volatile("" : : : "memory");

		ret = trace_gpr(pid);
		if (ret) {
			kill(pid, SIGTERM);
			shmdt((void *)pptr);
			shmctl(shm_id, IPC_RMID, NULL);
			return TEST_FAIL;
		}

		pptr[0] = 1;
		shmdt((void *)pptr);

		ret = wait(&status);
		shmctl(shm_id, IPC_RMID, NULL);
		if (ret != pid) {
			printf("Child's exit status not captured\n");
			return TEST_FAIL;
		}

		return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL :
			TEST_PASS;
	}

	return TEST_PASS;
}

int main(int argc, char *argv[])
{
	return test_harness(ptrace_gpr, "ptrace_gpr");
}
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
f666ad41 AK	2	/*
	3	* Ptrace test for GPR/FPR registers
	4	*
	5	* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
f666ad41 AK	6	*/
	7	#include "ptrace.h"
	8	#include "ptrace-gpr.h"
	9	#include "reg.h"
	10
	11	/* Tracer and Tracee Shared Data */
	12	int shm_id;
	13	int cptr, pptr;
	14
	15	float a = FPR_1;
	16	float b = FPR_2;
	17	float c = FPR_3;
	18
	19	void gpr(void)
	20	{
	21	unsigned long gpr_buf[18];
	22	float fpr_buf[32];
	23
	24	cptr = (int *)shmat(shm_id, NULL, 0);
	25
	26	asm __volatile__(
	27	ASM_LOAD_GPR_IMMED(gpr_1)
	28	ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
	29	:
5249497a	30	: [gpr_1]"i"(GPR_1), [flt_1] "b" (&a)
f666ad41 AK	31	: "memory", "r6", "r7", "r8", "r9", "r10",
	32	"r11", "r12", "r13", "r14", "r15", "r16", "r17",
	33	"r18", "r19", "r20", "r21", "r22", "r23", "r24",
	34	"r25", "r26", "r27", "r28", "r29", "r30", "r31"
	35	);
	36
	37	cptr[1] = 1;
	38
	39	while (!cptr[0])
	40	asm volatile("" : : : "memory");
	41
	42	shmdt((void *)cptr);
	43	store_gpr(gpr_buf);
	44	store_fpr_single_precision(fpr_buf);
	45
	46	if (validate_gpr(gpr_buf, GPR_3))
	47	exit(1);
	48
	49	if (validate_fpr_float(fpr_buf, c))
	50	exit(1);
	51
	52	exit(0);
	53	}
	54
	55	int trace_gpr(pid_t child)
	56	{
	57	unsigned long gpr[18];
	58	unsigned long fpr[32];
	59
	60	FAIL_IF(start_trace(child));
	61	FAIL_IF(show_gpr(child, gpr));
	62	FAIL_IF(validate_gpr(gpr, GPR_1));
	63	FAIL_IF(show_fpr(child, fpr));
	64	FAIL_IF(validate_fpr(fpr, FPR_1_REP));
	65	FAIL_IF(write_gpr(child, GPR_3));
	66	FAIL_IF(write_fpr(child, FPR_3_REP));
	67	FAIL_IF(stop_trace(child));
	68
	69	return TEST_PASS;
	70	}
	71
	72	int ptrace_gpr(void)
	73	{
	74	pid_t pid;
	75	int ret, status;
	76
	77	shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777\|IPC_CREAT);
	78	pid = fork();
	79	if (pid < 0) {
	80	perror("fork() failed");
	81	return TEST_FAIL;
	82	}
	83	if (pid == 0)
	84	gpr();
	85
	86	if (pid) {
	87	pptr = (int *)shmat(shm_id, NULL, 0);
	88	while (!pptr[1])
	89	asm volatile("" : : : "memory");
	90
	91	ret = trace_gpr(pid);
	92	if (ret) {
	93	kill(pid, SIGTERM);
	94	shmdt((void *)pptr);
95	shmctl(shm_id, IPC_RMID, NULL);
96	return TEST_FAIL;
97	}
98
99	pptr[0] = 1;
100	shmdt((void *)pptr);
101
102	ret = wait(&status);
103	shmctl(shm_id, IPC_RMID, NULL);
104	if (ret != pid) {
105	printf("Child's exit status not captured\n");
106	return TEST_FAIL;
107	}
108
109	return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL :
110	TEST_PASS;
111	}
112
113	return TEST_PASS;
114	}
115
116	int main(int argc, char *argv[])
117	{
118	return test_harness(ptrace_gpr, "ptrace_gpr");
119	}