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selftests/powerpc/ptrace: Convert to load/store doubles

Browse source 
Some of the ptrace tests check the contents of floating pointer
registers. Currently these use float, which is always 4 bytes, but the
ptrace API supports saving/restoring 8 bytes per register, so switch to
using doubles to exercise the code more fully.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220627140239.2464900-8-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman 2022-06-28 00:02:34 +10:00
parent af9f3f31f6
commit 53fa86e7ec
7 changed files with 111 additions and 109 deletions
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68
tools/testing/selftests/powerpc/include/reg.h
View file

@ -127,44 +127,44 @@
"li 30, %[" #_asm_symbol_name_immed "];" \
"li 31, %[" #_asm_symbol_name_immed "];"
#define ASM_LOAD_FPR_SINGLE_PRECISION(_asm_symbol_name_addr) \
"lfs 0, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 1, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 2, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 3, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 4, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 5, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 6, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 7, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 8, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 9, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 10, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 11, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 12, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 13, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 14, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 15, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 16, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 17, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 18, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 19, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 20, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 21, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 22, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 23, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 24, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 25, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 26, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 27, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 28, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 29, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 30, 0(%[" #_asm_symbol_name_addr "]);" \
"lfs 31, 0(%[" #_asm_symbol_name_addr "]);"
#define ASM_LOAD_FPR(_asm_symbol_name_addr) \
"lfd 0, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 1, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 2, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 3, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 4, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 5, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 6, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 7, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 8, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 9, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 10, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 11, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 12, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 13, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 14, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 15, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 16, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 17, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 18, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 19, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 20, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 21, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 22, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 23, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 24, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 25, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 26, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 27, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 28, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 29, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 30, 0(%[" #_asm_symbol_name_addr "]);" \
"lfd 31, 0(%[" #_asm_symbol_name_addr "]);"
#ifndef __ASSEMBLER__
void store_gpr(unsigned long *addr);
void load_gpr(unsigned long *addr);
void store_fpr_single_precision(float *addr);
void store_fpr(double *addr);
#endif /* end of __ASSEMBLER__ */
#endif /* _SELFTESTS_POWERPC_REG_H */

70
tools/testing/selftests/powerpc/lib/reg.S
View file

@ -53,42 +53,42 @@ FUNC_START(store_gpr)
blr
FUNC_END(store_gpr)
/* Single Precision Float - float buf[32] */
FUNC_START(store_fpr_single_precision)
stfs 0, 0*4(3)
stfs 1, 1*4(3)
stfs 2, 2*4(3)
stfs 3, 3*4(3)
stfs 4, 4*4(3)
stfs 5, 5*4(3)
stfs 6, 6*4(3)
stfs 7, 7*4(3)
stfs 8, 8*4(3)
stfs 9, 9*4(3)
stfs 10, 10*4(3)
stfs 11, 11*4(3)
stfs 12, 12*4(3)
stfs 13, 13*4(3)
stfs 14, 14*4(3)
stfs 15, 15*4(3)
stfs 16, 16*4(3)
stfs 17, 17*4(3)
stfs 18, 18*4(3)
stfs 19, 19*4(3)
stfs 20, 20*4(3)
stfs 21, 21*4(3)
stfs 22, 22*4(3)
stfs 23, 23*4(3)
stfs 24, 24*4(3)
stfs 25, 25*4(3)
stfs 26, 26*4(3)
stfs 27, 27*4(3)
stfs 28, 28*4(3)
stfs 29, 29*4(3)
stfs 30, 30*4(3)
stfs 31, 31*4(3)
/* Double Precision Float - double buf[32] */
FUNC_START(store_fpr)
stfd 0, 0*8(3)
stfd 1, 1*8(3)
stfd 2, 2*8(3)
stfd 3, 3*8(3)
stfd 4, 4*8(3)
stfd 5, 5*8(3)
stfd 6, 6*8(3)
stfd 7, 7*8(3)
stfd 8, 8*8(3)
stfd 9, 9*8(3)
stfd 10, 10*8(3)
stfd 11, 11*8(3)
stfd 12, 12*8(3)
stfd 13, 13*8(3)
stfd 14, 14*8(3)
stfd 15, 15*8(3)
stfd 16, 16*8(3)
stfd 17, 17*8(3)
stfd 18, 18*8(3)
stfd 19, 19*8(3)
stfd 20, 20*8(3)
stfd 21, 21*8(3)
stfd 22, 22*8(3)
stfd 23, 23*8(3)
stfd 24, 24*8(3)
stfd 25, 25*8(3)
stfd 26, 26*8(3)
stfd 27, 27*8(3)
stfd 28, 28*8(3)
stfd 29, 29*8(3)
stfd 30, 30*8(3)
stfd 31, 31*8(3)
blr
FUNC_END(store_fpr_single_precision)
FUNC_END(store_fpr)
/* VMX/VSX registers - unsigned long buf[128] */
FUNC_START(loadvsx)

16
tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c
View file

@ -12,20 +12,20 @@
int shm_id;
int *cptr, *pptr;
float a = FPR_1;
float b = FPR_2;
float c = FPR_3;
double a = FPR_1;
double b = FPR_2;
double c = FPR_3;
void gpr(void)
{
unsigned long gpr_buf[18];
float fpr_buf[32];
double 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)
ASM_LOAD_FPR(flt_1)
:
: [gpr_1]"i"(GPR_1), [flt_1] "b" (&a)
: "memory", "r6", "r7", "r8", "r9", "r10",
@ -41,12 +41,12 @@ void gpr(void)
shmdt((void *)cptr);
store_gpr(gpr_buf);
store_fpr_single_precision(fpr_buf);
store_fpr(fpr_buf);
if (validate_gpr(gpr_buf, GPR_3))
exit(1);
if (validate_fpr_float(fpr_buf, c))
if (validate_fpr_double(fpr_buf, c))
exit(1);
exit(0);
@ -55,7 +55,7 @@ void gpr(void)
int trace_gpr(pid_t child)
{
unsigned long gpr[18];
unsigned long fpr[32];
__u64 fpr[32];
FAIL_IF(start_trace(child));
FAIL_IF(show_gpr(child, gpr));

14
tools/testing/selftests/powerpc/ptrace/ptrace-gpr.h
View file

@ -12,10 +12,10 @@
#define FPR_3 0.003
#define FPR_4 0.004
#define FPR_1_REP 0x3f50624de0000000
#define FPR_2_REP 0x3f60624de0000000
#define FPR_3_REP 0x3f689374c0000000
#define FPR_4_REP 0x3f70624de0000000
#define FPR_1_REP 0x3f50624dd2f1a9fcull
#define FPR_2_REP 0x3f60624dd2f1a9fcull
#define FPR_3_REP 0x3f689374bc6a7efaull
#define FPR_4_REP 0x3f70624dd2f1a9fcull
/* Buffer must have 18 elements */
int validate_gpr(unsigned long *gpr, unsigned long val)
@ -36,13 +36,13 @@ int validate_gpr(unsigned long *gpr, unsigned long val)
}
/* Buffer must have 32 elements */
int validate_fpr(unsigned long *fpr, unsigned long val)
int validate_fpr(__u64 *fpr, __u64 val)
{
int i, found = 1;
for (i = 0; i < 32; i++) {
if (fpr[i] != val) {
printf("FPR[%d]: %lx Expected: %lx\n", i, fpr[i], val);
printf("FPR[%d]: %llx Expected: %llx\n", i, fpr[i], val);
found = 0;
}
}
@ -53,7 +53,7 @@ int validate_fpr(unsigned long *fpr, unsigned long val)
}
/* Buffer must have 32 elements */
int validate_fpr_float(float *fpr, float val)
int validate_fpr_double(double *fpr, double val)
{
int i, found = 1;

18
tools/testing/selftests/powerpc/ptrace/ptrace-tm-gpr.c
View file

@ -12,15 +12,15 @@
int shm_id;
unsigned long *cptr, *pptr;
float a = FPR_1;
float b = FPR_2;
float c = FPR_3;
double a = FPR_1;
double b = FPR_2;
double c = FPR_3;
void tm_gpr(void)
{
unsigned long gpr_buf[18];
unsigned long result, texasr;
float fpr_buf[32];
double fpr_buf[32];
printf("Starting the child\n");
cptr = (unsigned long *)shmat(shm_id, NULL, 0);
@ -29,12 +29,12 @@ void tm_gpr(void)
cptr[1] = 0;
asm __volatile__(
ASM_LOAD_GPR_IMMED(gpr_1)
ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
ASM_LOAD_FPR(flt_1)
"1: ;"
"tbegin.;"
"beq 2f;"
ASM_LOAD_GPR_IMMED(gpr_2)
ASM_LOAD_FPR_SINGLE_PRECISION(flt_2)
ASM_LOAD_FPR(flt_2)
"tsuspend.;"
"li 7, 1;"
"stw 7, 0(%[cptr1]);"
@ -70,12 +70,12 @@ void tm_gpr(void)
shmdt((void *)cptr);
store_gpr(gpr_buf);
store_fpr_single_precision(fpr_buf);
store_fpr(fpr_buf);
if (validate_gpr(gpr_buf, GPR_3))
exit(1);
if (validate_fpr_float(fpr_buf, c))
if (validate_fpr_double(fpr_buf, c))
exit(1);
exit(0);
@ -87,7 +87,7 @@ void tm_gpr(void)
int trace_tm_gpr(pid_t child)
{
unsigned long gpr[18];
unsigned long fpr[32];
__u64 fpr[32];
FAIL_IF(start_trace(child));
FAIL_IF(show_gpr(child, gpr));

20
tools/testing/selftests/powerpc/ptrace/ptrace-tm-spd-gpr.c
View file

@ -12,10 +12,10 @@
int shm_id;
int *cptr, *pptr;
float a = FPR_1;
float b = FPR_2;
float c = FPR_3;
float d = FPR_4;
double a = FPR_1;
double b = FPR_2;
double c = FPR_3;
double d = FPR_4;
__attribute__((used)) void wait_parent(void)
{
@ -28,7 +28,7 @@ void tm_spd_gpr(void)
{
unsigned long gpr_buf[18];
unsigned long result, texasr;
float fpr_buf[32];
double fpr_buf[32];
cptr = (int *)shmat(shm_id, NULL, 0);
@ -36,7 +36,7 @@ void tm_spd_gpr(void)
cptr[2] = 0;
asm __volatile__(
ASM_LOAD_GPR_IMMED(gpr_1)
ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
ASM_LOAD_FPR(flt_1)
"1: ;"
"tbegin.;"
@ -45,7 +45,7 @@ void tm_spd_gpr(void)
ASM_LOAD_GPR_IMMED(gpr_2)
"tsuspend.;"
ASM_LOAD_GPR_IMMED(gpr_4)
ASM_LOAD_FPR_SINGLE_PRECISION(flt_4)
ASM_LOAD_FPR(flt_4)
"bl wait_parent;"
"tresume.;"
@ -77,12 +77,12 @@ void tm_spd_gpr(void)
shmdt((void *)cptr);
store_gpr(gpr_buf);
store_fpr_single_precision(fpr_buf);
store_fpr(fpr_buf);
if (validate_gpr(gpr_buf, GPR_3))
exit(1);
if (validate_fpr_float(fpr_buf, c))
if (validate_fpr_double(fpr_buf, c))
exit(1);
exit(0);
}
@ -93,7 +93,7 @@ void tm_spd_gpr(void)
int trace_tm_spd_gpr(pid_t child)
{
unsigned long gpr[18];
unsigned long fpr[32];
__u64 fpr[32];
FAIL_IF(start_trace(child));
FAIL_IF(show_gpr(child, gpr));

14
tools/testing/selftests/powerpc/ptrace/ptrace.h
View file

@ -4,6 +4,9 @@
*
* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
*/
#define __SANE_USERSPACE_TYPES__
#include <inttypes.h>
#include <unistd.h>
#include <stdlib.h>
@ -30,8 +33,8 @@
#define TEST_FAIL 1
struct fpr_regs {
unsigned long fpr[32];
unsigned long fpscr;
__u64 fpr[32];
__u64 fpscr;
};
struct tm_spr_regs {
@ -318,7 +321,7 @@ int write_ckpt_tar_registers(pid_t child, unsigned long tar,
}
/* FPR */
int show_fpr(pid_t child, unsigned long *fpr)
int show_fpr(pid_t child, __u64 *fpr)
{
struct fpr_regs *regs;
int ret, i;
@ -337,7 +340,7 @@ int show_fpr(pid_t child, unsigned long *fpr)
return TEST_PASS;
}
int write_fpr(pid_t child, unsigned long val)
int write_fpr(pid_t child, __u64 val)
{
struct fpr_regs *regs;
int ret, i;
@ -360,7 +363,7 @@ int write_fpr(pid_t child, unsigned long val)
return TEST_PASS;
}
int show_ckpt_fpr(pid_t child, unsigned long *fpr)
int show_ckpt_fpr(pid_t child, __u64 *fpr)
{
struct fpr_regs *regs;
struct iovec iov;
@ -742,4 +745,3 @@ void analyse_texasr(unsigned long texasr)
}
void store_gpr(unsigned long *addr);
void store_fpr(float *addr);