mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 09:36:42 +07:00
[SPARC64]: Add user regsets.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
parent
ce22e1d394
commit
d09c2a23ee
@ -1,6 +1,6 @@
|
||||
/* ptrace.c: Sparc process tracing support.
|
||||
*
|
||||
* Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
|
||||
* Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)
|
||||
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
|
||||
*
|
||||
* Based upon code written by Ross Biro, Linus Torvalds, Bob Manson,
|
||||
@ -22,6 +22,9 @@
|
||||
#include <linux/seccomp.h>
|
||||
#include <linux/audit.h>
|
||||
#include <linux/signal.h>
|
||||
#include <linux/regset.h>
|
||||
#include <linux/compat.h>
|
||||
#include <linux/elf.h>
|
||||
|
||||
#include <asm/asi.h>
|
||||
#include <asm/pgtable.h>
|
||||
@ -167,6 +170,583 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
|
||||
}
|
||||
}
|
||||
|
||||
enum sparc_regset {
|
||||
REGSET_GENERAL,
|
||||
REGSET_FP,
|
||||
};
|
||||
|
||||
static int genregs64_get(struct task_struct *target,
|
||||
const struct user_regset *regset,
|
||||
unsigned int pos, unsigned int count,
|
||||
void *kbuf, void __user *ubuf)
|
||||
{
|
||||
const struct pt_regs *regs = task_pt_regs(target);
|
||||
int ret;
|
||||
|
||||
if (target == current)
|
||||
flushw_user();
|
||||
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
regs->u_regs,
|
||||
0, 16 * sizeof(u64));
|
||||
if (!ret) {
|
||||
unsigned long __user *reg_window = (unsigned long __user *)
|
||||
(regs->u_regs[UREG_I6] + STACK_BIAS);
|
||||
unsigned long window[16];
|
||||
|
||||
if (copy_from_user(window, reg_window, sizeof(window)))
|
||||
return -EFAULT;
|
||||
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
window,
|
||||
16 * sizeof(u64),
|
||||
32 * sizeof(u64));
|
||||
}
|
||||
|
||||
if (!ret) {
|
||||
/* TSTATE, TPC, TNPC */
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
®s->tstate,
|
||||
32 * sizeof(u64),
|
||||
35 * sizeof(u64));
|
||||
}
|
||||
|
||||
if (!ret) {
|
||||
unsigned long y = regs->y;
|
||||
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
&y,
|
||||
35 * sizeof(u64),
|
||||
36 * sizeof(u64));
|
||||
}
|
||||
|
||||
if (!ret)
|
||||
ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
|
||||
36 * sizeof(u64), -1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int genregs64_set(struct task_struct *target,
|
||||
const struct user_regset *regset,
|
||||
unsigned int pos, unsigned int count,
|
||||
const void *kbuf, const void __user *ubuf)
|
||||
{
|
||||
struct pt_regs *regs = task_pt_regs(target);
|
||||
int ret;
|
||||
|
||||
if (target == current)
|
||||
flushw_user();
|
||||
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
regs->u_regs,
|
||||
0, 16 * sizeof(u64));
|
||||
if (!ret && count > 0) {
|
||||
unsigned long __user *reg_window = (unsigned long __user *)
|
||||
(regs->u_regs[UREG_I6] + STACK_BIAS);
|
||||
unsigned long window[16];
|
||||
|
||||
if (copy_from_user(window, reg_window, sizeof(window)))
|
||||
return -EFAULT;
|
||||
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
window,
|
||||
16 * sizeof(u64),
|
||||
32 * sizeof(u64));
|
||||
if (!ret &&
|
||||
copy_to_user(reg_window, window, sizeof(window)))
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
if (!ret && count > 0) {
|
||||
unsigned long tstate;
|
||||
|
||||
/* TSTATE */
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
&tstate,
|
||||
32 * sizeof(u64),
|
||||
33 * sizeof(u64));
|
||||
if (!ret) {
|
||||
/* Only the condition codes can be modified
|
||||
* in the %tstate register.
|
||||
*/
|
||||
tstate &= (TSTATE_ICC | TSTATE_XCC);
|
||||
regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC);
|
||||
regs->tstate |= tstate;
|
||||
}
|
||||
}
|
||||
|
||||
if (!ret) {
|
||||
/* TPC, TNPC */
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
®s->tpc,
|
||||
33 * sizeof(u64),
|
||||
35 * sizeof(u64));
|
||||
}
|
||||
|
||||
if (!ret) {
|
||||
unsigned long y;
|
||||
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
&y,
|
||||
35 * sizeof(u64),
|
||||
36 * sizeof(u64));
|
||||
if (!ret)
|
||||
regs->y = y;
|
||||
}
|
||||
|
||||
if (!ret)
|
||||
ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
|
||||
36 * sizeof(u64), -1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int fpregs64_get(struct task_struct *target,
|
||||
const struct user_regset *regset,
|
||||
unsigned int pos, unsigned int count,
|
||||
void *kbuf, void __user *ubuf)
|
||||
{
|
||||
const unsigned long *fpregs = task_thread_info(target)->fpregs;
|
||||
unsigned long fprs, fsr, gsr;
|
||||
int ret;
|
||||
|
||||
if (target == current)
|
||||
save_and_clear_fpu();
|
||||
|
||||
fprs = task_thread_info(target)->fpsaved[0];
|
||||
|
||||
if (fprs & FPRS_DL)
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
fpregs,
|
||||
0, 16 * sizeof(u64));
|
||||
else
|
||||
ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
|
||||
0,
|
||||
16 * sizeof(u64));
|
||||
|
||||
if (!ret) {
|
||||
if (fprs & FPRS_DU)
|
||||
ret = user_regset_copyout(&pos, &count,
|
||||
&kbuf, &ubuf,
|
||||
fpregs + 16,
|
||||
16 * sizeof(u64),
|
||||
32 * sizeof(u64));
|
||||
else
|
||||
ret = user_regset_copyout_zero(&pos, &count,
|
||||
&kbuf, &ubuf,
|
||||
16 * sizeof(u64),
|
||||
32 * sizeof(u64));
|
||||
}
|
||||
|
||||
if (fprs & FPRS_FEF) {
|
||||
fsr = task_thread_info(target)->xfsr[0];
|
||||
gsr = task_thread_info(target)->gsr[0];
|
||||
} else {
|
||||
fsr = gsr = 0;
|
||||
}
|
||||
|
||||
if (!ret)
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
&fsr,
|
||||
32 * sizeof(u64),
|
||||
33 * sizeof(u64));
|
||||
if (!ret)
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
&gsr,
|
||||
33 * sizeof(u64),
|
||||
34 * sizeof(u64));
|
||||
if (!ret)
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
&fprs,
|
||||
34 * sizeof(u64),
|
||||
35 * sizeof(u64));
|
||||
|
||||
if (!ret)
|
||||
ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
|
||||
35 * sizeof(u64), -1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int fpregs64_set(struct task_struct *target,
|
||||
const struct user_regset *regset,
|
||||
unsigned int pos, unsigned int count,
|
||||
const void *kbuf, const void __user *ubuf)
|
||||
{
|
||||
unsigned long *fpregs = task_thread_info(target)->fpregs;
|
||||
unsigned long fprs;
|
||||
int ret;
|
||||
|
||||
if (target == current)
|
||||
save_and_clear_fpu();
|
||||
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
fpregs,
|
||||
0, 32 * sizeof(u64));
|
||||
if (!ret)
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
task_thread_info(target)->xfsr,
|
||||
32 * sizeof(u64),
|
||||
33 * sizeof(u64));
|
||||
if (!ret)
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
task_thread_info(target)->gsr,
|
||||
33 * sizeof(u64),
|
||||
34 * sizeof(u64));
|
||||
|
||||
fprs = task_thread_info(target)->fpsaved[0];
|
||||
if (!ret && count > 0) {
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
&fprs,
|
||||
34 * sizeof(u64),
|
||||
35 * sizeof(u64));
|
||||
}
|
||||
|
||||
fprs |= (FPRS_FEF | FPRS_DL | FPRS_DU);
|
||||
task_thread_info(target)->fpsaved[0] = fprs;
|
||||
|
||||
if (!ret)
|
||||
ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
|
||||
35 * sizeof(u64), -1);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static const struct user_regset sparc64_regsets[] = {
|
||||
/* Format is:
|
||||
* G0 --> G7
|
||||
* O0 --> O7
|
||||
* L0 --> L7
|
||||
* I0 --> I7
|
||||
* TSTATE, TPC, TNPC, Y
|
||||
*/
|
||||
[REGSET_GENERAL] = {
|
||||
.core_note_type = NT_PRSTATUS,
|
||||
.n = 36 * sizeof(u64),
|
||||
.size = sizeof(u64), .align = sizeof(u64),
|
||||
.get = genregs64_get, .set = genregs64_set
|
||||
},
|
||||
/* Format is:
|
||||
* F0 --> F63
|
||||
* FSR
|
||||
* GSR
|
||||
* FPRS
|
||||
*/
|
||||
[REGSET_FP] = {
|
||||
.core_note_type = NT_PRFPREG,
|
||||
.n = 35 * sizeof(u64),
|
||||
.size = sizeof(u64), .align = sizeof(u64),
|
||||
.get = fpregs64_get, .set = fpregs64_set
|
||||
},
|
||||
};
|
||||
|
||||
static const struct user_regset_view user_sparc64_view = {
|
||||
.name = "sparc64", .e_machine = EM_SPARCV9,
|
||||
.regsets = sparc64_regsets, .n = ARRAY_SIZE(sparc64_regsets)
|
||||
};
|
||||
|
||||
static int genregs32_get(struct task_struct *target,
|
||||
const struct user_regset *regset,
|
||||
unsigned int pos, unsigned int count,
|
||||
void *kbuf, void __user *ubuf)
|
||||
{
|
||||
const struct pt_regs *regs = task_pt_regs(target);
|
||||
compat_ulong_t __user *reg_window;
|
||||
compat_ulong_t *k = kbuf;
|
||||
compat_ulong_t __user *u = ubuf;
|
||||
compat_ulong_t reg;
|
||||
|
||||
if (target == current)
|
||||
flushw_user();
|
||||
|
||||
pos /= sizeof(reg);
|
||||
count /= sizeof(reg);
|
||||
|
||||
if (kbuf) {
|
||||
for (; count > 0 && pos < 16; count--)
|
||||
*k++ = regs->u_regs[pos++];
|
||||
|
||||
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
|
||||
for (; count > 0 && pos < 32; count--) {
|
||||
if (get_user(*k++, ®_window[pos++]))
|
||||
return -EFAULT;
|
||||
}
|
||||
} else {
|
||||
for (; count > 0 && pos < 16; count--) {
|
||||
if (put_user((compat_ulong_t) regs->u_regs[pos++], u++))
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
|
||||
for (; count > 0 && pos < 32; count--) {
|
||||
if (get_user(reg, ®_window[pos++]) ||
|
||||
put_user(reg, u++))
|
||||
return -EFAULT;
|
||||
}
|
||||
}
|
||||
while (count > 0) {
|
||||
switch (pos) {
|
||||
case 32: /* PSR */
|
||||
reg = tstate_to_psr(regs->tstate);
|
||||
break;
|
||||
case 33: /* PC */
|
||||
reg = regs->tpc;
|
||||
break;
|
||||
case 34: /* NPC */
|
||||
reg = regs->tnpc;
|
||||
break;
|
||||
case 35: /* Y */
|
||||
reg = regs->y;
|
||||
break;
|
||||
case 36: /* WIM */
|
||||
case 37: /* TBR */
|
||||
reg = 0;
|
||||
break;
|
||||
default:
|
||||
goto finish;
|
||||
}
|
||||
|
||||
if (kbuf)
|
||||
*k++ = reg;
|
||||
else if (put_user(reg, u++))
|
||||
return -EFAULT;
|
||||
pos++;
|
||||
count--;
|
||||
}
|
||||
finish:
|
||||
pos *= sizeof(reg);
|
||||
count *= sizeof(reg);
|
||||
|
||||
return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
|
||||
38 * sizeof(reg), -1);
|
||||
}
|
||||
|
||||
static int genregs32_set(struct task_struct *target,
|
||||
const struct user_regset *regset,
|
||||
unsigned int pos, unsigned int count,
|
||||
const void *kbuf, const void __user *ubuf)
|
||||
{
|
||||
struct pt_regs *regs = task_pt_regs(target);
|
||||
compat_ulong_t __user *reg_window;
|
||||
const compat_ulong_t *k = kbuf;
|
||||
const compat_ulong_t __user *u = ubuf;
|
||||
compat_ulong_t reg;
|
||||
|
||||
if (target == current)
|
||||
flushw_user();
|
||||
|
||||
pos /= sizeof(reg);
|
||||
count /= sizeof(reg);
|
||||
|
||||
if (kbuf) {
|
||||
for (; count > 0 && pos < 16; count--)
|
||||
regs->u_regs[pos++] = *k++;
|
||||
|
||||
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
|
||||
for (; count > 0 && pos < 32; count--) {
|
||||
if (put_user(*k++, ®_window[pos++]))
|
||||
return -EFAULT;
|
||||
}
|
||||
} else {
|
||||
for (; count > 0 && pos < 16; count--) {
|
||||
if (get_user(reg, u++))
|
||||
return -EFAULT;
|
||||
regs->u_regs[pos++] = reg;
|
||||
}
|
||||
|
||||
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
|
||||
for (; count > 0 && pos < 32; count--) {
|
||||
if (get_user(reg, u++) ||
|
||||
put_user(reg, ®_window[pos++]))
|
||||
return -EFAULT;
|
||||
}
|
||||
}
|
||||
while (count > 0) {
|
||||
unsigned long tstate;
|
||||
|
||||
if (kbuf)
|
||||
reg = *k++;
|
||||
else if (get_user(reg, u++))
|
||||
return -EFAULT;
|
||||
|
||||
switch (pos) {
|
||||
case 32: /* PSR */
|
||||
tstate = regs->tstate;
|
||||
tstate &= ~(TSTATE_ICC | TSTATE_XCC);
|
||||
tstate |= psr_to_tstate_icc(reg);
|
||||
regs->tstate = tstate;
|
||||
break;
|
||||
case 33: /* PC */
|
||||
regs->tpc = reg;
|
||||
break;
|
||||
case 34: /* NPC */
|
||||
regs->tnpc = reg;
|
||||
break;
|
||||
case 35: /* Y */
|
||||
regs->y = reg;
|
||||
break;
|
||||
case 36: /* WIM */
|
||||
case 37: /* TBR */
|
||||
break;
|
||||
default:
|
||||
goto finish;
|
||||
}
|
||||
|
||||
pos++;
|
||||
count--;
|
||||
}
|
||||
finish:
|
||||
pos *= sizeof(reg);
|
||||
count *= sizeof(reg);
|
||||
|
||||
return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
|
||||
38 * sizeof(reg), -1);
|
||||
}
|
||||
|
||||
static int fpregs32_get(struct task_struct *target,
|
||||
const struct user_regset *regset,
|
||||
unsigned int pos, unsigned int count,
|
||||
void *kbuf, void __user *ubuf)
|
||||
{
|
||||
const unsigned long *fpregs = task_thread_info(target)->fpregs;
|
||||
compat_ulong_t enabled;
|
||||
unsigned long fprs;
|
||||
compat_ulong_t fsr;
|
||||
int ret = 0;
|
||||
|
||||
if (target == current)
|
||||
save_and_clear_fpu();
|
||||
|
||||
fprs = task_thread_info(target)->fpsaved[0];
|
||||
if (fprs & FPRS_FEF) {
|
||||
fsr = task_thread_info(target)->xfsr[0];
|
||||
enabled = 1;
|
||||
} else {
|
||||
fsr = 0;
|
||||
enabled = 0;
|
||||
}
|
||||
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
fpregs,
|
||||
0, 32 * sizeof(u32));
|
||||
|
||||
if (!ret)
|
||||
ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
|
||||
32 * sizeof(u32),
|
||||
33 * sizeof(u32));
|
||||
if (!ret)
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
&fsr,
|
||||
33 * sizeof(u32),
|
||||
34 * sizeof(u32));
|
||||
|
||||
if (!ret) {
|
||||
compat_ulong_t val;
|
||||
|
||||
val = (enabled << 8) | (8 << 16);
|
||||
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
|
||||
&val,
|
||||
34 * sizeof(u32),
|
||||
35 * sizeof(u32));
|
||||
}
|
||||
|
||||
if (!ret)
|
||||
ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
|
||||
35 * sizeof(u32), -1);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int fpregs32_set(struct task_struct *target,
|
||||
const struct user_regset *regset,
|
||||
unsigned int pos, unsigned int count,
|
||||
const void *kbuf, const void __user *ubuf)
|
||||
{
|
||||
unsigned long *fpregs = task_thread_info(target)->fpregs;
|
||||
unsigned long fprs;
|
||||
int ret;
|
||||
|
||||
if (target == current)
|
||||
save_and_clear_fpu();
|
||||
|
||||
fprs = task_thread_info(target)->fpsaved[0];
|
||||
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
fpregs,
|
||||
0, 32 * sizeof(u32));
|
||||
if (!ret)
|
||||
user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
|
||||
32 * sizeof(u32),
|
||||
33 * sizeof(u32));
|
||||
if (!ret && count > 0) {
|
||||
compat_ulong_t fsr;
|
||||
unsigned long val;
|
||||
|
||||
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
|
||||
&fsr,
|
||||
33 * sizeof(u32),
|
||||
34 * sizeof(u32));
|
||||
if (!ret) {
|
||||
val = task_thread_info(target)->xfsr[0];
|
||||
val &= 0xffffffff00000000UL;
|
||||
val |= fsr;
|
||||
task_thread_info(target)->xfsr[0] = val;
|
||||
}
|
||||
}
|
||||
|
||||
fprs |= (FPRS_FEF | FPRS_DL);
|
||||
task_thread_info(target)->fpsaved[0] = fprs;
|
||||
|
||||
if (!ret)
|
||||
ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
|
||||
34 * sizeof(u32), -1);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static const struct user_regset sparc32_regsets[] = {
|
||||
/* Format is:
|
||||
* G0 --> G7
|
||||
* O0 --> O7
|
||||
* L0 --> L7
|
||||
* I0 --> I7
|
||||
* PSR, PC, nPC, Y, WIM, TBR
|
||||
*/
|
||||
[REGSET_GENERAL] = {
|
||||
.core_note_type = NT_PRSTATUS,
|
||||
.n = 38 * sizeof(u32),
|
||||
.size = sizeof(u32), .align = sizeof(u32),
|
||||
.get = genregs32_get, .set = genregs32_set
|
||||
},
|
||||
/* Format is:
|
||||
* F0 --> F31
|
||||
* empty 32-bit word
|
||||
* FSR (32--bit word)
|
||||
* FPU QUEUE COUNT (8-bit char)
|
||||
* FPU QUEUE ENTRYSIZE (8-bit char)
|
||||
* FPU ENABLED (8-bit char)
|
||||
* empty 8-bit char
|
||||
* FPU QUEUE (64 32-bit ints)
|
||||
*/
|
||||
[REGSET_FP] = {
|
||||
.core_note_type = NT_PRFPREG,
|
||||
.n = 99 * sizeof(u32),
|
||||
.size = sizeof(u32), .align = sizeof(u32),
|
||||
.get = fpregs32_get, .set = fpregs32_set
|
||||
},
|
||||
};
|
||||
|
||||
static const struct user_regset_view user_sparc32_view = {
|
||||
.name = "sparc", .e_machine = EM_SPARC,
|
||||
.regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
|
||||
};
|
||||
|
||||
const struct user_regset_view *task_user_regset_view(struct task_struct *task)
|
||||
{
|
||||
if (test_tsk_thread_flag(task, TIF_32BIT))
|
||||
return &user_sparc32_view;
|
||||
return &user_sparc64_view;
|
||||
}
|
||||
|
||||
asmlinkage void do_ptrace(struct pt_regs *regs)
|
||||
{
|
||||
int request = regs->u_regs[UREG_I0];
|
||||
|
||||
Loading…
Reference in New Issue
Block a user