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powerpc: Use a datatype for instructions

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Currently unsigned ints are used to represent instructions on powerpc.
This has worked well as instructions have always been 4 byte words.

However, ISA v3.1 introduces some changes to instructions that mean
this scheme will no longer work as well. This change is Prefixed
Instructions. A prefixed instruction is made up of a word prefix
followed by a word suffix to make an 8 byte double word instruction.
No matter the endianness of the system the prefix always comes first.
Prefixed instructions are only planned for powerpc64.

Introduce a ppc_inst type to represent both prefixed and word
instructions on powerpc64 while keeping it possible to exclusively
have word instructions on powerpc32.

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
[mpe: Fix compile error in emulate_spe()]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-12-jniethe5@gmail.com
This commit is contained in:
Jordan Niethe 2020-05-06 13:40:31 +10:00 committed by Michael Ellerman
parent 217862d9b9
commit 94afd069d9
26 changed files with 237 additions and 214 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
arch/powerpc/include/asm/code-patching.h
View File

@ -23,33 +23,33 @@
#define BRANCH_ABSOLUTE 0x2
bool is_offset_in_branch_range(long offset);
int create_branch(unsigned int *instr, const unsigned int *addr,
int create_branch(struct ppc_inst *instr, const struct ppc_inst *addr,
unsigned long target, int flags);
int create_cond_branch(unsigned int *instr, const unsigned int *addr,
int create_cond_branch(struct ppc_inst *instr, const struct ppc_inst *addr,
unsigned long target, int flags);
int patch_branch(unsigned int *addr, unsigned long target, int flags);
int patch_instruction(unsigned int *addr, unsigned int instr);
int raw_patch_instruction(unsigned int *addr, unsigned int instr);
int patch_branch(struct ppc_inst *addr, unsigned long target, int flags);
int patch_instruction(struct ppc_inst *addr, struct ppc_inst instr);
int raw_patch_instruction(struct ppc_inst *addr, struct ppc_inst instr);
static inline unsigned long patch_site_addr(s32 *site)
{
return (unsigned long)site + *site;
}
static inline int patch_instruction_site(s32 *site, unsigned int instr)
static inline int patch_instruction_site(s32 *site, struct ppc_inst instr)
{
return patch_instruction((unsigned int *)patch_site_addr(site), instr);
return patch_instruction((struct ppc_inst *)patch_site_addr(site), instr);
}
static inline int patch_branch_site(s32 *site, unsigned long target, int flags)
{
return patch_branch((unsigned int *)patch_site_addr(site), target, flags);
return patch_branch((struct ppc_inst *)patch_site_addr(site), target, flags);
}
static inline int modify_instruction(unsigned int *addr, unsigned int clr,
unsigned int set)
{
return patch_instruction(addr, ppc_inst((*addr & ~clr) | set));
return patch_instruction((struct ppc_inst *)addr, ppc_inst((*addr & ~clr) | set));
}
static inline int modify_instruction_site(s32 *site, unsigned int clr, unsigned int set)
@ -57,13 +57,13 @@ static inline int modify_instruction_site(s32 *site, unsigned int clr, unsigned
return modify_instruction((unsigned int *)patch_site_addr(site), clr, set);
}
int instr_is_relative_branch(unsigned int instr);
int instr_is_relative_link_branch(unsigned int instr);
int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr);
unsigned long branch_target(const unsigned int *instr);
int translate_branch(unsigned int *instr, const unsigned int *dest,
const unsigned int *src);
extern bool is_conditional_branch(unsigned int instr);
int instr_is_relative_branch(struct ppc_inst instr);
int instr_is_relative_link_branch(struct ppc_inst instr);
int instr_is_branch_to_addr(const struct ppc_inst *instr, unsigned long addr);
unsigned long branch_target(const struct ppc_inst *instr);
int translate_branch(struct ppc_inst *instr, const struct ppc_inst *dest,
const struct ppc_inst *src);
extern bool is_conditional_branch(struct ppc_inst instr);
#ifdef CONFIG_PPC_BOOK3E_64
void __patch_exception(int exc, unsigned long addr);
#define patch_exception(exc, name) do { \

18
arch/powerpc/include/asm/inst.h
View File

@ -6,26 +6,30 @@
* Instruction data type for POWER
*/
#define ppc_inst(x) (x)
struct ppc_inst {
u32 val;
} __packed;
static inline u32 ppc_inst_val(u32 x)
#define ppc_inst(x) ((struct ppc_inst){ .val = x })
static inline u32 ppc_inst_val(struct ppc_inst x)
{
return x;
return x.val;
}
static inline int ppc_inst_primary_opcode(u32 x)
static inline int ppc_inst_primary_opcode(struct ppc_inst x)
{
return ppc_inst_val(x) >> 26;
}
static inline u32 ppc_inst_swab(u32 x)
static inline struct ppc_inst ppc_inst_swab(struct ppc_inst x)
{
return ppc_inst(swab32(ppc_inst_val(x)));
}
static inline bool ppc_inst_equal(u32 x, u32 y)
static inline bool ppc_inst_equal(struct ppc_inst x, struct ppc_inst y)
{
return x == y;
return ppc_inst_val(x) == ppc_inst_val(y);
}
#endif /* _ASM_POWERPC_INST_H */

5
arch/powerpc/include/asm/sstep.h
View File

@ -2,6 +2,7 @@
/*
* Copyright (C) 2004 Paul Mackerras <paulus@au.ibm.com>, IBM
*/
#include <asm/inst.h>
struct pt_regs;
@ -132,7 +133,7 @@ union vsx_reg {
* otherwise.
*/
extern int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
unsigned int instr);
struct ppc_inst instr);
/*
* Emulate an instruction that can be executed just by updating
@ -149,7 +150,7 @@ void emulate_update_regs(struct pt_regs *reg, struct instruction_op *op);
* 0 if it could not be emulated, or -1 for an instruction that
* should not be emulated (rfid, mtmsrd clearing MSR_RI, etc.).
*/
extern int emulate_step(struct pt_regs *regs, unsigned int instr);
extern int emulate_step(struct pt_regs *regs, struct ppc_inst instr);
/*
* Emulate a load or store instruction by reading/writing the

5
arch/powerpc/include/asm/uprobes.h
View File

@ -11,6 +11,7 @@
#include <linux/notifier.h>
#include <asm/probes.h>
#include <asm/inst.h>
typedef ppc_opcode_t uprobe_opcode_t;
@ -23,8 +24,8 @@ typedef ppc_opcode_t uprobe_opcode_t;
struct arch_uprobe {
union {
u32 insn;
u32 ixol;
struct ppc_inst insn;
struct ppc_inst ixol;
};
};

9
arch/powerpc/kernel/align.c
View File

@ -105,7 +105,7 @@ static struct aligninfo spe_aligninfo[32] = {
* so we don't need the address swizzling.
*/
static int emulate_spe(struct pt_regs *regs, unsigned int reg,
unsigned int instr)
struct ppc_inst ppc_instr)
{
int ret;
union {
@ -116,8 +116,9 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg,
} data, temp;
unsigned char __user *p, *addr;
unsigned long *evr = &current->thread.evr[reg];
unsigned int nb, flags;
unsigned int nb, flags, instr;
instr = ppc_inst_val(ppc_instr);
instr = (instr >> 1) & 0x1f;
/* DAR has the operand effective address */
@ -294,7 +295,7 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg,
int fix_alignment(struct pt_regs *regs)
{
unsigned int instr;
struct ppc_inst instr;
struct instruction_op op;
int r, type;
@ -304,7 +305,7 @@ int fix_alignment(struct pt_regs *regs)
*/
CHECK_FULL_REGS(regs);
if (unlikely(__get_user(instr, (unsigned int __user *)regs->nip)))
if (unlikely(__get_user(instr.val, (unsigned int __user *)regs->nip)))
return -EFAULT;
if ((regs->msr & MSR_LE) != (MSR_KERNEL & MSR_LE)) {
/* We don't handle PPC little-endian any more... */

2
arch/powerpc/kernel/crash_dump.c
View File

@ -35,7 +35,7 @@ void __init reserve_kdump_trampoline(void)
static void __init create_trampoline(unsigned long addr)
{
unsigned int *p = (unsigned int *)addr;
struct ppc_inst *p = (struct ppc_inst *)addr;
/* The maximum range of a single instruction branch, is the current
* instruction's address + (32 MB - 4) bytes. For the trampoline we

6
arch/powerpc/kernel/epapr_paravirt.c
View File

@ -37,10 +37,10 @@ static int __init early_init_dt_scan_epapr(unsigned long node,
return -1;
for (i = 0; i < (len / 4); i++) {
u32 inst = ppc_inst(be32_to_cpu(insts[i]));
patch_instruction(epapr_hypercall_start + i, inst);
struct ppc_inst inst = ppc_inst(be32_to_cpu(insts[i]));
patch_instruction((struct ppc_inst *)(epapr_hypercall_start + i), inst);
#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64)
patch_instruction(epapr_ev_idle_start + i, inst);
patch_instruction((struct ppc_inst *)(epapr_ev_idle_start + i), inst);
#endif
}

4
arch/powerpc/kernel/hw_breakpoint.c
View File

@ -244,12 +244,12 @@ dar_range_overlaps(unsigned long dar, int size, struct arch_hw_breakpoint *info)
static bool stepping_handler(struct pt_regs *regs, struct perf_event *bp,
struct arch_hw_breakpoint *info)
{
unsigned int instr = ppc_inst(0);
struct ppc_inst instr = ppc_inst(0);
int ret, type, size;
struct instruction_op op;
unsigned long addr = info->address;
if (__get_user_inatomic(instr, (unsigned int *)regs->nip))
if (__get_user_inatomic(instr.val, (unsigned int *)regs->nip))
goto fail;
ret = analyse_instr(&op, regs, instr);

2
arch/powerpc/kernel/jump_label.c
View File

@ -11,7 +11,7 @@
void arch_jump_label_transform(struct jump_entry *entry,
enum jump_label_type type)
{
u32 *addr = (u32 *)(unsigned long)entry->code;
struct ppc_inst *addr = (struct ppc_inst *)(unsigned long)entry->code;
if (type == JUMP_LABEL_JMP)
patch_branch(addr, entry->target, 0);

4
arch/powerpc/kernel/kgdb.c
View File

@ -419,7 +419,7 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
{
int err;
unsigned int instr;
unsigned int *addr = (unsigned int *)bpt->bpt_addr;
struct ppc_inst *addr = (struct ppc_inst *)bpt->bpt_addr;
err = probe_kernel_address(addr, instr);
if (err)
@ -438,7 +438,7 @@ int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt)
{
int err;
unsigned int instr = *(unsigned int *)bpt->saved_instr;
unsigned int *addr = (unsigned int *)bpt->bpt_addr;
struct ppc_inst *addr = (struct ppc_inst *)bpt->bpt_addr;
err = patch_instruction(addr, ppc_inst(instr));
if (err)

8
arch/powerpc/kernel/kprobes.c
View File

@ -106,7 +106,7 @@ kprobe_opcode_t *kprobe_lookup_name(const char *name, unsigned int offset)
int arch_prepare_kprobe(struct kprobe *p)
{
int ret = 0;
kprobe_opcode_t insn = *p->addr;
struct ppc_inst insn = *(struct ppc_inst *)p->addr;
if ((unsigned long)p->addr & 0x03) {
printk("Attempt to register kprobe at an unaligned address\n");
@ -139,13 +139,13 @@ NOKPROBE_SYMBOL(arch_prepare_kprobe);
void arch_arm_kprobe(struct kprobe *p)
{
patch_instruction(p->addr, ppc_inst(BREAKPOINT_INSTRUCTION));
patch_instruction((struct ppc_inst *)p->addr, ppc_inst(BREAKPOINT_INSTRUCTION));
}
NOKPROBE_SYMBOL(arch_arm_kprobe);
void arch_disarm_kprobe(struct kprobe *p)
{
patch_instruction(p->addr, ppc_inst(p->opcode));
patch_instruction((struct ppc_inst *)p->addr, ppc_inst(p->opcode));
}
NOKPROBE_SYMBOL(arch_disarm_kprobe);
@ -217,7 +217,7 @@ NOKPROBE_SYMBOL(arch_prepare_kretprobe);
static int try_to_emulate(struct kprobe *p, struct pt_regs *regs)
{
int ret;
unsigned int insn = *p->ainsn.insn;
struct ppc_inst insn = *(struct ppc_inst *)p->ainsn.insn;
/* regs->nip is also adjusted if emulate_step returns 1 */
ret = emulate_step(regs, insn);

5
arch/powerpc/kernel/mce_power.c
View File

@ -20,6 +20,7 @@
#include <asm/sstep.h>
#include <asm/exception-64s.h>
#include <asm/extable.h>
#include <asm/inst.h>
/*
* Convert an address related to an mm to a PFN. NOTE: we are in real
@ -369,7 +370,7 @@ static int mce_find_instr_ea_and_phys(struct pt_regs *regs, uint64_t *addr,
* in real-mode is tricky and can lead to recursive
* faults
*/
int instr;
struct ppc_inst instr;
unsigned long pfn, instr_addr;
struct instruction_op op;
struct pt_regs tmp = *regs;
@ -377,7 +378,7 @@ static int mce_find_instr_ea_and_phys(struct pt_regs *regs, uint64_t *addr,
pfn = addr_to_pfn(regs, regs->nip);
if (pfn != ULONG_MAX) {
instr_addr = (pfn << PAGE_SHIFT) + (regs->nip & ~PAGE_MASK);
instr = *(unsigned int *)(instr_addr);
instr = *(struct ppc_inst *)(instr_addr);
if (!analyse_instr(&op, &tmp, instr)) {
pfn = addr_to_pfn(regs, op.ea);
*addr = op.ea;

64
arch/powerpc/kernel/optprobes.c
View File

@ -100,8 +100,9 @@ static unsigned long can_optimize(struct kprobe *p)
* Ensure that the instruction is not a conditional branch,
* and that can be emulated.
*/
if (!is_conditional_branch(*p->ainsn.insn) &&
analyse_instr(&op, &regs, *p->ainsn.insn) == 1) {
if (!is_conditional_branch(*(struct ppc_inst *)p->ainsn.insn) &&
analyse_instr(&op, &regs,
*(struct ppc_inst *)p->ainsn.insn) == 1) {
emulate_update_regs(&regs, &op);
nip = regs.nip;
}
@ -148,13 +149,15 @@ void arch_remove_optimized_kprobe(struct optimized_kprobe *op)
void patch_imm32_load_insns(unsigned int val, kprobe_opcode_t *addr)
{
/* addis r4,0,(insn)@h */
patch_instruction(addr, ppc_inst(PPC_INST_ADDIS | ___PPC_RT(4) |
((val >> 16) & 0xffff)));
patch_instruction((struct ppc_inst *)addr,
ppc_inst(PPC_INST_ADDIS | ___PPC_RT(4) |
((val >> 16) & 0xffff)));
addr++;
/* ori r4,r4,(insn)@l */
patch_instruction(addr, ppc_inst(PPC_INST_ORI | ___PPC_RA(4) |
___PPC_RS(4) | (val & 0xffff)));
patch_instruction((struct ppc_inst *)addr,
ppc_inst(PPC_INST_ORI | ___PPC_RA(4) |
___PPC_RS(4) | (val & 0xffff)));
}
/*
@ -164,34 +167,39 @@ void patch_imm32_load_insns(unsigned int val, kprobe_opcode_t *addr)
void patch_imm64_load_insns(unsigned long val, kprobe_opcode_t *addr)
{
/* lis r3,(op)@highest */
patch_instruction(addr, ppc_inst(PPC_INST_ADDIS | ___PPC_RT(3) |
((val >> 48) & 0xffff)));
patch_instruction((struct ppc_inst *)addr,
ppc_inst(PPC_INST_ADDIS | ___PPC_RT(3) |
((val >> 48) & 0xffff)));
addr++;
/* ori r3,r3,(op)@higher */
patch_instruction(addr, ppc_inst(PPC_INST_ORI | ___PPC_RA(3) |
___PPC_RS(3) | ((val >> 32) & 0xffff)));
patch_instruction((struct ppc_inst *)addr,
ppc_inst(PPC_INST_ORI | ___PPC_RA(3) |
___PPC_RS(3) | ((val >> 32) & 0xffff)));
addr++;
/* rldicr r3,r3,32,31 */
patch_instruction(addr, ppc_inst(PPC_INST_RLDICR | ___PPC_RA(3) |
___PPC_RS(3) | __PPC_SH64(32) | __PPC_ME64(31)));
patch_instruction((struct ppc_inst *)addr,
ppc_inst(PPC_INST_RLDICR | ___PPC_RA(3) |
___PPC_RS(3) | __PPC_SH64(32) | __PPC_ME64(31)));
addr++;
/* oris r3,r3,(op)@h */
patch_instruction(addr, ppc_inst(PPC_INST_ORIS | ___PPC_RA(3) |
___PPC_RS(3) | ((val >> 16) & 0xffff)));
patch_instruction((struct ppc_inst *)addr,
ppc_inst(PPC_INST_ORIS | ___PPC_RA(3) |
___PPC_RS(3) | ((val >> 16) & 0xffff)));
addr++;
/* ori r3,r3,(op)@l */
patch_instruction(addr, ppc_inst(PPC_INST_ORI | ___PPC_RA(3) |
___PPC_RS(3) | (val & 0xffff)));
patch_instruction((struct ppc_inst *)addr,
ppc_inst(PPC_INST_ORI | ___PPC_RA(3) |
___PPC_RS(3) | (val & 0xffff)));
}
int arch_prepare_optimized_kprobe(struct optimized_kprobe *op, struct kprobe *p)
{
kprobe_opcode_t *buff, branch_op_callback, branch_emulate_step;
kprobe_opcode_t *op_callback_addr, *emulate_step_addr;
struct ppc_inst branch_op_callback, branch_emulate_step;
kprobe_opcode_t *op_callback_addr, *emulate_step_addr, *buff;
long b_offset;
unsigned long nip, size;
int rc, i;
@ -231,7 +239,7 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op, struct kprobe *p)
size = (TMPL_END_IDX * sizeof(kprobe_opcode_t)) / sizeof(int);
pr_devel("Copying template to %p, size %lu\n", buff, size);
for (i = 0; i < size; i++) {
rc = patch_instruction(buff + i,
rc = patch_instruction((struct ppc_inst *)(buff + i),
ppc_inst(*(optprobe_template_entry + i)));
if (rc < 0)
goto error;
@ -254,20 +262,22 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op, struct kprobe *p)
}
rc = create_branch(&branch_op_callback,
(unsigned int *)buff + TMPL_CALL_HDLR_IDX,
(struct ppc_inst *)(buff + TMPL_CALL_HDLR_IDX),
(unsigned long)op_callback_addr,
BRANCH_SET_LINK);
rc |= create_branch(&branch_emulate_step,
(unsigned int *)buff + TMPL_EMULATE_IDX,
(struct ppc_inst *)(buff + TMPL_EMULATE_IDX),
(unsigned long)emulate_step_addr,
BRANCH_SET_LINK);
if (rc)
goto error;
patch_instruction(buff + TMPL_CALL_HDLR_IDX, branch_op_callback);
patch_instruction(buff + TMPL_EMULATE_IDX, branch_emulate_step);
patch_instruction((struct ppc_inst *)(buff + TMPL_CALL_HDLR_IDX),
branch_op_callback);
patch_instruction((struct ppc_inst *)(buff + TMPL_EMULATE_IDX),
branch_emulate_step);
/*
* 3. load instruction to be emulated into relevant register, and
@ -277,7 +287,7 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op, struct kprobe *p)
/*
* 4. branch back from trampoline
*/
patch_branch(buff + TMPL_RET_IDX, (unsigned long)nip, 0);
patch_branch((struct ppc_inst *)(buff + TMPL_RET_IDX), (unsigned long)nip, 0);
flush_icache_range((unsigned long)buff,
(unsigned long)(&buff[TMPL_END_IDX]));
@ -309,7 +319,7 @@ int arch_check_optimized_kprobe(struct optimized_kprobe *op)
void arch_optimize_kprobes(struct list_head *oplist)
{
unsigned int instr;
struct ppc_inst instr;
struct optimized_kprobe *op;
struct optimized_kprobe *tmp;
@ -321,9 +331,9 @@ void arch_optimize_kprobes(struct list_head *oplist)
memcpy(op->optinsn.copied_insn, op->kp.addr,
RELATIVEJUMP_SIZE);
create_branch(&instr,
(unsigned int *)op->kp.addr,
(struct ppc_inst *)op->kp.addr,
(unsigned long)op->optinsn.insn, 0);
patch_instruction(op->kp.addr, instr);
patch_instruction((struct ppc_inst *)op->kp.addr, instr);
list_del_init(&op->list);
}
}

4
arch/powerpc/kernel/setup_32.c
View File

@ -74,8 +74,8 @@ EXPORT_SYMBOL(DMA_MODE_WRITE);
*/
notrace void __init machine_init(u64 dt_ptr)
{
unsigned int *addr = (unsigned int *)patch_site_addr(&patch__memset_nocache);
unsigned int insn;
struct ppc_inst *addr = (struct ppc_inst *)patch_site_addr(&patch__memset_nocache);
struct ppc_inst insn;
/* Configure static keys first, now that we're relocated. */
setup_feature_keys();

83
arch/powerpc/kernel/trace/ftrace.c
View File

@ -41,23 +41,23 @@
#define NUM_FTRACE_TRAMPS 8
static unsigned long ftrace_tramps[NUM_FTRACE_TRAMPS];
static unsigned int
static struct ppc_inst
ftrace_call_replace(unsigned long ip, unsigned long addr, int link)
{
unsigned int op;
struct ppc_inst op;
addr = ppc_function_entry((void *)addr);
/* if (link) set op to 'bl' else 'b' */
create_branch(&op, (unsigned int *)ip, addr, link ? 1 : 0);
create_branch(&op, (struct ppc_inst *)ip, addr, link ? 1 : 0);
return op;
}
static int
ftrace_modify_code(unsigned long ip, unsigned int old, unsigned int new)
ftrace_modify_code(unsigned long ip, struct ppc_inst old, struct ppc_inst new)
{
unsigned int replaced;
struct ppc_inst replaced;
/*
* Note:
@ -79,7 +79,7 @@ ftrace_modify_code(unsigned long ip, unsigned int old, unsigned int new)
}
/* replace the text with the new text */
if (patch_instruction((unsigned int *)ip, new))
if (patch_instruction((struct ppc_inst *)ip, new))
return -EPERM;
return 0;
@ -90,24 +90,24 @@ ftrace_modify_code(unsigned long ip, unsigned int old, unsigned int new)
*/
static int test_24bit_addr(unsigned long ip, unsigned long addr)
{
unsigned int op;
struct ppc_inst op;
addr = ppc_function_entry((void *)addr);
/* use the create_branch to verify that this offset can be branched */
return create_branch(&op, (unsigned int *)ip, addr, 0) == 0;
return create_branch(&op, (struct ppc_inst *)ip, addr, 0) == 0;
}
static int is_bl_op(unsigned int op)
static int is_bl_op(struct ppc_inst op)
{
return (ppc_inst_val(op) & 0xfc000003) == 0x48000001;
}
static int is_b_op(unsigned int op)
static int is_b_op(struct ppc_inst op)
{
return (ppc_inst_val(op) & 0xfc000003) == 0x48000000;
}
static unsigned long find_bl_target(unsigned long ip, unsigned int op)
static unsigned long find_bl_target(unsigned long ip, struct ppc_inst op)
{
int offset;
@ -127,7 +127,7 @@ __ftrace_make_nop(struct module *mod,
{
unsigned long entry, ptr, tramp;
unsigned long ip = rec->ip;
unsigned int op, pop;
struct ppc_inst op, pop;
/* read where this goes */
if (probe_kernel_read(&op, (void *)ip, sizeof(int))) {
@ -208,7 +208,7 @@ __ftrace_make_nop(struct module *mod,
}
#endif /* CONFIG_MPROFILE_KERNEL */
if (patch_instruction((unsigned int *)ip, pop)) {
if (patch_instruction((struct ppc_inst *)ip, pop)) {
pr_err("Patching NOP failed.\n");
return -EPERM;
}
@ -221,7 +221,7 @@ static int
__ftrace_make_nop(struct module *mod,
struct dyn_ftrace *rec, unsigned long addr)
{
unsigned int op;
struct ppc_inst op;
unsigned int jmp[4];
unsigned long ip = rec->ip;
unsigned long tramp;
@ -280,7 +280,7 @@ __ftrace_make_nop(struct module *mod,
op = ppc_inst(PPC_INST_NOP);
if (patch_instruction((unsigned int *)ip, op))
if (patch_instruction((struct ppc_inst *)ip, op))
return -EPERM;
return 0;
@ -291,7 +291,7 @@ __ftrace_make_nop(struct module *mod,
static unsigned long find_ftrace_tramp(unsigned long ip)
{
int i;
unsigned int instr;
struct ppc_inst instr;
/*
* We have the compiler generated long_branch tramps at the end
@ -328,9 +328,10 @@ static int add_ftrace_tramp(unsigned long tramp)
*/
static int setup_mcount_compiler_tramp(unsigned long tramp)
{
int i, op;
int i;
struct ppc_inst op;
unsigned long ptr;
unsigned int instr;
struct ppc_inst instr;
static unsigned long ftrace_plt_tramps[NUM_FTRACE_TRAMPS];
/* Is this a known long jump tramp? */
@ -379,7 +380,7 @@ static int setup_mcount_compiler_tramp(unsigned long tramp)
return -1;
}
if (patch_branch((unsigned int *)tramp, ptr, 0)) {
if (patch_branch((struct ppc_inst *)tramp, ptr, 0)) {
pr_debug("REL24 out of range!\n");
return -1;
}
@ -395,7 +396,7 @@ static int setup_mcount_compiler_tramp(unsigned long tramp)
static int __ftrace_make_nop_kernel(struct dyn_ftrace *rec, unsigned long addr)
{
unsigned long tramp, ip = rec->ip;
unsigned int op;
struct ppc_inst op;
/* Read where this goes */
if (probe_kernel_read(&op, (void *)ip, sizeof(int))) {
@ -423,7 +424,7 @@ static int __ftrace_make_nop_kernel(struct dyn_ftrace *rec, unsigned long addr)
}
}
if (patch_instruction((unsigned int *)ip, ppc_inst(PPC_INST_NOP))) {
if (patch_instruction((struct ppc_inst *)ip, ppc_inst(PPC_INST_NOP))) {
pr_err("Patching NOP failed.\n");
return -EPERM;
}
@ -435,7 +436,7 @@ int ftrace_make_nop(struct module *mod,
struct dyn_ftrace *rec, unsigned long addr)
{
unsigned long ip = rec->ip;
unsigned int old, new;
struct ppc_inst old, new;
/*
* If the calling address is more that 24 bits away,
@ -488,7 +489,7 @@ int ftrace_make_nop(struct module *mod,
*/
#ifndef CONFIG_MPROFILE_KERNEL
static int
expected_nop_sequence(void *ip, unsigned int op0, unsigned int op1)
expected_nop_sequence(void *ip, struct ppc_inst op0, struct ppc_inst op1)
{
/*
* We expect to see:
@ -506,7 +507,7 @@ expected_nop_sequence(void *ip, unsigned int op0, unsigned int op1)
}
#else
static int
expected_nop_sequence(void *ip, unsigned int op0, unsigned int op1)
expected_nop_sequence(void *ip, struct ppc_inst op0, struct ppc_inst op1)
{
/* look for patched "NOP" on ppc64 with -mprofile-kernel */
if (!ppc_inst_equal(op0, ppc_inst(PPC_INST_NOP)))
@ -518,8 +519,8 @@ expected_nop_sequence(void *ip, unsigned int op0, unsigned int op1)
static int
__ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
{
unsigned int op[2];
unsigned int instr;
struct ppc_inst op[2];
struct ppc_inst instr;
void *ip = (void *)rec->ip;
unsigned long entry, ptr, tramp;
struct module *mod = rec->arch.mod;
@ -584,7 +585,7 @@ static int
__ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
{
int err;
unsigned int op;
struct ppc_inst op;
unsigned long ip = rec->ip;
/* read where this goes */
@ -604,7 +605,7 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
}
/* create the branch to the trampoline */
err = create_branch(&op, (unsigned int *)ip,
err = create_branch(&op, (struct ppc_inst *)ip,
rec->arch.mod->arch.tramp, BRANCH_SET_LINK);
if (err) {
pr_err("REL24 out of range!\n");
@ -613,7 +614,7 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
pr_devel("write to %lx\n", rec->ip);
if (patch_instruction((unsigned int *)ip, op))
if (patch_instruction((struct ppc_inst *)ip, op))
return -EPERM;
return 0;
@ -623,7 +624,7 @@ __ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
static int __ftrace_make_call_kernel(struct dyn_ftrace *rec, unsigned long addr)
{
unsigned int op;
struct ppc_inst op;
void *ip = (void *)rec->ip;
unsigned long tramp, entry, ptr;
@ -671,7 +672,7 @@ static int __ftrace_make_call_kernel(struct dyn_ftrace *rec, unsigned long addr)
int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
{
unsigned long ip = rec->ip;
unsigned int old, new;
struct ppc_inst old, new;
/*
* If the calling address is more that 24 bits away,
@ -710,7 +711,7 @@ static int
__ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
unsigned long addr)
{
unsigned int op;
struct ppc_inst op;
unsigned long ip = rec->ip;
unsigned long entry, ptr, tramp;
struct module *mod = rec->arch.mod;
@ -758,7 +759,7 @@ __ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
/* The new target may be within range */
if (test_24bit_addr(ip, addr)) {
/* within range */
if (patch_branch((unsigned int *)ip, addr, BRANCH_SET_LINK)) {
if (patch_branch((struct ppc_inst *)ip, addr, BRANCH_SET_LINK)) {
pr_err("REL24 out of range!\n");
return -EINVAL;
}
@ -786,12 +787,12 @@ __ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
}
/* Ensure branch is within 24 bits */
if (create_branch(&op, (unsigned int *)ip, tramp, BRANCH_SET_LINK)) {
if (create_branch(&op, (struct ppc_inst *)ip, tramp, BRANCH_SET_LINK)) {
pr_err("Branch out of range\n");
return -EINVAL;
}
if (patch_branch((unsigned int *)ip, tramp, BRANCH_SET_LINK)) {
if (patch_branch((struct ppc_inst *)ip, tramp, BRANCH_SET_LINK)) {
pr_err("REL24 out of range!\n");
return -EINVAL;
}
@ -804,7 +805,7 @@ int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
unsigned long addr)
{
unsigned long ip = rec->ip;
unsigned int old, new;
struct ppc_inst old, new;
/*
* If the calling address is more that 24 bits away,
@ -844,10 +845,10 @@ int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
int ftrace_update_ftrace_func(ftrace_func_t func)
{
unsigned long ip = (unsigned long)(&ftrace_call);
unsigned int old, new;
struct ppc_inst old, new;
int ret;
old = *(unsigned int *)&ftrace_call;
old = *(struct ppc_inst *)&ftrace_call;
new = ftrace_call_replace(ip, (unsigned long)func, 1);
ret = ftrace_modify_code(ip, old, new);
@ -855,7 +856,7 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
/* Also update the regs callback function */
if (!ret) {
ip = (unsigned long)(&ftrace_regs_call);
old = *(unsigned int *)&ftrace_regs_call;
old = *(struct ppc_inst *)&ftrace_regs_call;
new = ftrace_call_replace(ip, (unsigned long)func, 1);
ret = ftrace_modify_code(ip, old, new);
}
@ -929,7 +930,7 @@ int ftrace_enable_ftrace_graph_caller(void)
unsigned long ip = (unsigned long)(&ftrace_graph_call);
unsigned long addr = (unsigned long)(&ftrace_graph_caller);
unsigned long stub = (unsigned long)(&ftrace_graph_stub);
unsigned int old, new;
struct ppc_inst old, new;
old = ftrace_call_replace(ip, stub, 0);
new = ftrace_call_replace(ip, addr, 0);
@ -942,7 +943,7 @@ int ftrace_disable_ftrace_graph_caller(void)
unsigned long ip = (unsigned long)(&ftrace_graph_call);
unsigned long addr = (unsigned long)(&ftrace_graph_caller);
unsigned long stub = (unsigned long)(&ftrace_graph_stub);
unsigned int old, new;
struct ppc_inst old, new;
old = ftrace_call_replace(ip, addr, 0);
new = ftrace_call_replace(ip, stub, 0);

5
arch/powerpc/kernel/vecemu.c
View File

@ -261,11 +261,12 @@ static unsigned int rfin(unsigned int x)
int emulate_altivec(struct pt_regs *regs)
{
unsigned int instr, i, word;
struct ppc_inst instr;
unsigned int i, word;
unsigned int va, vb, vc, vd;
vector128 *vrs;
if (get_user(instr, (unsigned int __user *) regs->nip))
if (get_user(instr.val, (unsigned int __user *)regs->nip))
return -EFAULT;
word = ppc_inst_val(instr);

76
arch/powerpc/lib/code-patching.c
View File

@ -19,12 +19,12 @@
#include <asm/setup.h>
#include <asm/inst.h>
static int __patch_instruction(unsigned int *exec_addr, unsigned int instr,
unsigned int *patch_addr)
static int __patch_instruction(struct ppc_inst *exec_addr, struct ppc_inst instr,
struct ppc_inst *patch_addr)
{
int err = 0;
__put_user_asm(instr, patch_addr, err, "stw");
__put_user_asm(ppc_inst_val(instr), patch_addr, err, "stw");
if (err)
return err;
@ -34,7 +34,7 @@ static int __patch_instruction(unsigned int *exec_addr, unsigned int instr,
return 0;
}
int raw_patch_instruction(unsigned int *addr, unsigned int instr)
int raw_patch_instruction(struct ppc_inst *addr, struct ppc_inst instr)
{
return __patch_instruction(addr, instr, addr);
}
@ -137,10 +137,10 @@ static inline int unmap_patch_area(unsigned long addr)
return 0;
}
static int do_patch_instruction(unsigned int *addr, unsigned int instr)
static int do_patch_instruction(struct ppc_inst *addr, struct ppc_inst instr)
{
int err;
unsigned int *patch_addr = NULL;
struct ppc_inst *patch_addr = NULL;
unsigned long flags;
unsigned long text_poke_addr;
unsigned long kaddr = (unsigned long)addr;
@ -161,8 +161,7 @@ static int do_patch_instruction(unsigned int *addr, unsigned int instr)
goto out;
}
patch_addr = (unsigned int *)(text_poke_addr) +
((kaddr & ~PAGE_MASK) / sizeof(unsigned int));
patch_addr = (struct ppc_inst *)(text_poke_addr + (kaddr & ~PAGE_MASK));
__patch_instruction(addr, instr, patch_addr);
@ -177,14 +176,14 @@ out:
}
#else /* !CONFIG_STRICT_KERNEL_RWX */
static int do_patch_instruction(unsigned int *addr, unsigned int instr)
static int do_patch_instruction(struct ppc_inst *addr, struct ppc_inst instr)
{
return raw_patch_instruction(addr, instr);
}
#endif /* CONFIG_STRICT_KERNEL_RWX */
int patch_instruction(unsigned int *addr, unsigned int instr)
int patch_instruction(struct ppc_inst *addr, struct ppc_inst instr)
{
/* Make sure we aren't patching a freed init section */
if (init_mem_is_free && init_section_contains(addr, 4)) {
@ -195,9 +194,9 @@ int patch_instruction(unsigned int *addr, unsigned int instr)
}
NOKPROBE_SYMBOL(patch_instruction);
int patch_branch(unsigned int *addr, unsigned long target, int flags)
int patch_branch(struct ppc_inst *addr, unsigned long target, int flags)
{
unsigned int instr;
struct ppc_inst instr;
create_branch(&instr, addr, target, flags);
return patch_instruction(addr, instr);
@ -229,7 +228,7 @@ bool is_offset_in_branch_range(long offset)
* Helper to check if a given instruction is a conditional branch
* Derived from the conditional checks in analyse_instr()
*/
bool is_conditional_branch(unsigned int instr)
bool is_conditional_branch(struct ppc_inst instr)
{
unsigned int opcode = ppc_inst_primary_opcode(instr);
@ -247,13 +246,13 @@ bool is_conditional_branch(unsigned int instr)
}
NOKPROBE_SYMBOL(is_conditional_branch);
int create_branch(unsigned int *instr,
const unsigned int *addr,
int create_branch(struct ppc_inst *instr,
const struct ppc_inst *addr,
unsigned long target, int flags)
{
long offset;
*instr = 0;
*instr = ppc_inst(0);
offset = target;
if (! (flags & BRANCH_ABSOLUTE))
offset = offset - (unsigned long)addr;
@ -263,12 +262,12 @@ int create_branch(unsigned int *instr,
return 1;
/* Mask out the flags and target, so they don't step on each other. */
*instr = 0x48000000 | (flags & 0x3) | (offset & 0x03FFFFFC);
*instr = ppc_inst(0x48000000 | (flags & 0x3) | (offset & 0x03FFFFFC));
return 0;
}
int create_cond_branch(unsigned int *instr, const unsigned int *addr,
int create_cond_branch(struct ppc_inst *instr, const struct ppc_inst *addr,
unsigned long target, int flags)
{
long offset;
@ -282,27 +281,27 @@ int create_cond_branch(unsigned int *instr, const unsigned int *addr,
return 1;
/* Mask out the flags and target, so they don't step on each other. */
*instr = 0x40000000 | (flags & 0x3FF0003) | (offset & 0xFFFC);
*instr = ppc_inst(0x40000000 | (flags & 0x3FF0003) | (offset & 0xFFFC));
return 0;
}
static unsigned int branch_opcode(unsigned int instr)
static unsigned int branch_opcode(struct ppc_inst instr)
{
return ppc_inst_primary_opcode(instr) & 0x3F;
}
static int instr_is_branch_iform(unsigned int instr)
static int instr_is_branch_iform(struct ppc_inst instr)
{
return branch_opcode(instr) == 18;
}
static int instr_is_branch_bform(unsigned int instr)
static int instr_is_branch_bform(struct ppc_inst instr)
{
return branch_opcode(instr) == 16;
}
int instr_is_relative_branch(unsigned int instr)
int instr_is_relative_branch(struct ppc_inst instr)
{
if (ppc_inst_val(instr) & BRANCH_ABSOLUTE)
return 0;
@ -310,12 +309,12 @@ int instr_is_relative_branch(unsigned int instr)
return instr_is_branch_iform(instr) || instr_is_branch_bform(instr);
}
int instr_is_relative_link_branch(unsigned int instr)
int instr_is_relative_link_branch(struct ppc_inst instr)
{
return instr_is_relative_branch(instr) && (ppc_inst_val(instr) & BRANCH_SET_LINK);
}
static unsigned long branch_iform_target(const unsigned int *instr)
static unsigned long branch_iform_target(const struct ppc_inst *instr)
{
signed long imm;
@ -331,7 +330,7 @@ static unsigned long branch_iform_target(const unsigned int *instr)
return (unsigned long)imm;
}
static unsigned long branch_bform_target(const unsigned int *instr)
static unsigned long branch_bform_target(const struct ppc_inst *instr)
{
signed long imm;
@ -347,7 +346,7 @@ static unsigned long branch_bform_target(const unsigned int *instr)
return (unsigned long)imm;
}
unsigned long branch_target(const unsigned int *instr)
unsigned long branch_target(const struct ppc_inst *instr)
{
if (instr_is_branch_iform(*instr))
return branch_iform_target(instr);
@ -357,7 +356,7 @@ unsigned long branch_target(const unsigned int *instr)
return 0;
}
int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr)
int instr_is_branch_to_addr(const struct ppc_inst *instr, unsigned long addr)
{
if (instr_is_branch_iform(*instr) || instr_is_branch_bform(*instr))
return branch_target(instr) == addr;
@ -365,8 +364,8 @@ int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr)
return 0;
}
int translate_branch(unsigned int *instr, const unsigned int *dest,
const unsigned int *src)
int translate_branch(struct ppc_inst *instr, const struct ppc_inst *dest,
const struct ppc_inst *src)
{
unsigned long target;
@ -392,7 +391,7 @@ void __patch_exception(int exc, unsigned long addr)
* instruction of the exception, not the first one
*/
patch_branch(ibase + (exc / 4) + 1, addr, 0);
patch_branch((struct ppc_inst *)(ibase + (exc / 4) + 1), addr, 0);
}
#endif
@ -409,7 +408,7 @@ static void __init test_trampoline(void)
static void __init test_branch_iform(void)
{
int err;
unsigned int instr;
struct ppc_inst instr;
unsigned long addr;
addr = (unsigned long)&instr;
@ -484,12 +483,12 @@ static void __init test_branch_iform(void)
static void __init test_create_function_call(void)
{
unsigned int *iptr;
struct ppc_inst *iptr;
unsigned long dest;
unsigned int instr;
struct ppc_inst instr;
/* Check we can create a function call */
iptr = (unsigned int *)ppc_function_entry(test_trampoline);
iptr = (struct ppc_inst *)ppc_function_entry(test_trampoline);
dest = ppc_function_entry(test_create_function_call);
create_branch(&instr, iptr, dest, BRANCH_SET_LINK);
patch_instruction(iptr, instr);
@ -500,7 +499,8 @@ static void __init test_branch_bform(void)
{
int err;
unsigned long addr;
unsigned int *iptr, instr, flags;
struct ppc_inst *iptr, instr;
unsigned int flags;
iptr = &instr;
addr = (unsigned long)iptr;
@ -570,8 +570,8 @@ static void __init test_branch_bform(void)
static void __init test_translate_branch(void)
{
unsigned long addr;
unsigned int *p, *q;
unsigned int instr;
struct ppc_inst *p, *q;
struct ppc_inst instr;
void *buf;
buf = vmalloc(PAGE_ALIGN(0x2000000 + 1));

62
arch/powerpc/lib/feature-fixups.c
View File

@ -32,26 +32,26 @@ struct fixup_entry {
long alt_end_off;
};
static unsigned int *calc_addr(struct fixup_entry *fcur, long offset)
static struct ppc_inst *calc_addr(struct fixup_entry *fcur, long offset)
{
/*
* We store the offset to the code as a negative offset from
* the start of the alt_entry, to support the VDSO. This
* routine converts that back into an actual address.
*/
return (unsigned int *)((unsigned long)fcur + offset);
return (struct ppc_inst *)((unsigned long)fcur + offset);
}
static int patch_alt_instruction(unsigned int *src, unsigned int *dest,
unsigned int *alt_start, unsigned int *alt_end)
static int patch_alt_instruction(struct ppc_inst *src, struct ppc_inst *dest,
struct ppc_inst *alt_start, struct ppc_inst *alt_end)
{
int err;
unsigned int instr;
struct ppc_inst instr;
instr = *src;
if (instr_is_relative_branch(*src)) {
unsigned int *target = (unsigned int *)branch_target(src);
struct ppc_inst *target = (struct ppc_inst *)branch_target(src);
/* Branch within the section doesn't need translating */
if (target < alt_start || target > alt_end) {
@ -68,7 +68,7 @@ static int patch_alt_instruction(unsigned int *src, unsigned int *dest,
static int patch_feature_section(unsigned long value, struct fixup_entry *fcur)
{
unsigned int *start, *end, *alt_start, *alt_end, *src, *dest;
struct ppc_inst *start, *end, *alt_start, *alt_end, *src, *dest;
start = calc_addr(fcur, fcur->start_off);
end = calc_addr(fcur, fcur->end_off);
@ -147,15 +147,17 @@ static void do_stf_entry_barrier_fixups(enum stf_barrier_type types)
pr_devel("patching dest %lx\n", (unsigned long)dest);
patch_instruction(dest, ppc_inst(instrs[0]));
patch_instruction((struct ppc_inst *)dest, ppc_inst(instrs[0]));
if (types & STF_BARRIER_FALLBACK)
patch_branch(dest + 1, (unsigned long)&stf_barrier_fallback,
patch_branch((struct ppc_inst *)(dest + 1),
(unsigned long)&stf_barrier_fallback,
BRANCH_SET_LINK);
else
patch_instruction(dest + 1, ppc_inst(instrs[1]));
patch_instruction((struct ppc_inst *)(dest + 1),
ppc_inst(instrs[1]));
patch_instruction(dest + 2, ppc_inst(instrs[2]));
patch_instruction((struct ppc_inst *)(dest + 2), ppc_inst(instrs[2]));
}
printk(KERN_DEBUG "stf-barrier: patched %d entry locations (%s barrier)\n", i,
@ -208,12 +210,12 @@ static void do_stf_exit_barrier_fixups(enum stf_barrier_type types)
pr_devel("patching dest %lx\n", (unsigned long)dest);
patch_instruction(dest, ppc_inst(instrs[0]));
patch_instruction(dest + 1, ppc_inst(instrs[1]));
patch_instruction(dest + 2, ppc_inst(instrs[2]));
patch_instruction(dest + 3, ppc_inst(instrs[3]));
patch_instruction(dest + 4, ppc_inst(instrs[4]));
patch_instruction(dest + 5, ppc_inst(instrs[5]));
patch_instruction((struct ppc_inst *)dest, ppc_inst(instrs[0]));
patch_instruction((struct ppc_inst *)(dest + 1), ppc_inst(instrs[1]));
patch_instruction((struct ppc_inst *)(dest + 2), ppc_inst(instrs[2]));
patch_instruction((struct ppc_inst *)(dest + 3), ppc_inst(instrs[3]));
patch_instruction((struct ppc_inst *)(dest + 4), ppc_inst(instrs[4]));
patch_instruction((struct ppc_inst *)(dest + 5), ppc_inst(instrs[5]));
}
printk(KERN_DEBUG "stf-barrier: patched %d exit locations (%s barrier)\n", i,
(types == STF_BARRIER_NONE) ? "no" :
@ -261,9 +263,9 @@ void do_rfi_flush_fixups(enum l1d_flush_type types)
pr_devel("patching dest %lx\n", (unsigned long)dest);
patch_instruction(dest, ppc_inst(instrs[0]));
patch_instruction(dest + 1, ppc_inst(instrs[1]));
patch_instruction(dest + 2, ppc_inst(instrs[2]));
patch_instruction((struct ppc_inst *)dest, ppc_inst(instrs[0]));
patch_instruction((struct ppc_inst *)(dest + 1), ppc_inst(instrs[1]));
patch_instruction((struct ppc_inst *)(dest + 2), ppc_inst(instrs[2]));
}
printk(KERN_DEBUG "rfi-flush: patched %d locations (%s flush)\n", i,
@ -296,7 +298,7 @@ void do_barrier_nospec_fixups_range(bool enable, void *fixup_start, void *fixup_
dest = (void *)start + *start;
pr_devel("patching dest %lx\n", (unsigned long)dest);
patch_instruction(dest, ppc_inst(instr));
patch_instruction((struct ppc_inst *)dest, ppc_inst(instr));
}
printk(KERN_DEBUG "barrier-nospec: patched %d locations\n", i);
@ -339,8 +341,8 @@ void do_barrier_nospec_fixups_range(bool enable, void *fixup_start, void *fixup_
dest = (void *)start + *start;
pr_devel("patching dest %lx\n", (unsigned long)dest);
patch_instruction(dest, ppc_inst(instr[0]));
patch_instruction(dest + 1, ppc_inst(instr[1]));
patch_instruction((struct ppc_inst *)dest, ppc_inst(instr[0]));
patch_instruction((struct ppc_inst *)(dest + 1), ppc_inst(instr[1]));
}
printk(KERN_DEBUG "barrier-nospec: patched %d locations\n", i);
@ -354,7 +356,7 @@ static void patch_btb_flush_section(long *curr)
end = (void *)curr + *(curr + 1);
for (; start < end; start++) {
pr_devel("patching dest %lx\n", (unsigned long)start);
patch_instruction(start, ppc_inst(PPC_INST_NOP));
patch_instruction((struct ppc_inst *)start, ppc_inst(PPC_INST_NOP));
}
}
@ -373,7 +375,7 @@ void do_btb_flush_fixups(void)
void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end)
{
long *start, *end;
unsigned int *dest;
struct ppc_inst *dest;
if (!(value & CPU_FTR_LWSYNC))
return ;
@ -390,18 +392,18 @@ void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end)
static void do_final_fixups(void)
{
#if defined(CONFIG_PPC64) && defined(CONFIG_RELOCATABLE)
int *src, *dest;
struct ppc_inst *src, *dest;
unsigned long length;
if (PHYSICAL_START == 0)
return;
src = (int *)(KERNELBASE + PHYSICAL_START);
dest = (int *)KERNELBASE;
length = (__end_interrupts - _stext) / sizeof(int);
src = (struct ppc_inst *)(KERNELBASE + PHYSICAL_START);
dest = (struct ppc_inst *)KERNELBASE;
length = (__end_interrupts - _stext) / sizeof(struct ppc_inst);
while (length--) {
raw_patch_instruction(dest, ppc_inst(*src));
raw_patch_instruction(dest, *src);
src++;
dest++;
}

4
arch/powerpc/lib/sstep.c
View File

@ -1163,7 +1163,7 @@ static nokprobe_inline int trap_compare(long v1, long v2)
* otherwise.
*/
int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
unsigned int instr)
struct ppc_inst instr)
{
unsigned int opcode, ra, rb, rc, rd, spr, u;
unsigned long int imm;
@ -3103,7 +3103,7 @@ NOKPROBE_SYMBOL(emulate_loadstore);
* or -1 if the instruction is one that should not be stepped,
* such as an rfid, or a mtmsrd that would clear MSR_RI.
*/
int emulate_step(struct pt_regs *regs, unsigned int instr)
int emulate_step(struct pt_regs *regs, struct ppc_inst instr)
{
struct instruction_op op;
int r, err, type;

9
arch/powerpc/lib/test_emulate_step.c
View File

@ -462,7 +462,7 @@ struct compute_test {
struct {
char *descr;
unsigned long flags;
unsigned int instr;
struct ppc_inst instr;
struct pt_regs regs;
} subtests[MAX_SUBTESTS + 1];
};
@ -843,7 +843,7 @@ static struct compute_test compute_tests[] = {
};
static int __init emulate_compute_instr(struct pt_regs *regs,
unsigned int instr)
struct ppc_inst instr)
{
struct instruction_op op;
@ -861,7 +861,7 @@ static int __init emulate_compute_instr(struct pt_regs *regs,
}
static int __init execute_compute_instr(struct pt_regs *regs,
unsigned int instr)
struct ppc_inst instr)
{
extern int exec_instr(struct pt_regs *regs);
extern s32 patch__exec_instr;
@ -892,7 +892,8 @@ static void __init run_tests_compute(void)
unsigned long flags;
struct compute_test *test;
struct pt_regs *regs, exp, got;
unsigned int i, j, k, instr;
unsigned int i, j, k;
struct ppc_inst instr;
bool ignore_gpr, ignore_xer, ignore_ccr, passed;
for (i = 0; i < ARRAY_SIZE(compute_tests); i++) {

4
arch/powerpc/mm/fault.c
View File

@ -47,7 +47,7 @@
* Check whether the instruction inst is a store using
* an update addressing form which will update r1.
*/
static bool store_updates_sp(unsigned int inst)
static bool store_updates_sp(struct ppc_inst inst)
{
/* check for 1 in the rA field */
if (((ppc_inst_val(inst) >> 16) & 0x1f) != 1)
@ -305,7 +305,7 @@ static bool bad_stack_expansion(struct pt_regs *regs, unsigned long address,
if ((flags & FAULT_FLAG_WRITE) && (flags & FAULT_FLAG_USER) &&
access_ok(nip, sizeof(*nip))) {
unsigned int inst;
struct ppc_inst inst;
if (!probe_user_read(&inst, nip, sizeof(inst)))
return !store_updates_sp(inst);

4
arch/powerpc/perf/core-book3s.c
View File

@ -421,14 +421,14 @@ static __u64 power_pmu_bhrb_to(u64 addr)
if (probe_kernel_read(&instr, (void *)addr, sizeof(instr)))
return 0;
return branch_target(&instr);
return branch_target((struct ppc_inst *)&instr);
}
/* Userspace: need copy instruction here then translate it */
if (probe_user_read(&instr, (unsigned int __user *)addr, sizeof(instr)))
return 0;
target = branch_target(&instr);
target = branch_target((struct ppc_inst *)&instr);
if ((!target) || (instr & BRANCH_ABSOLUTE))
return target;

4
arch/powerpc/platforms/86xx/mpc86xx_smp.c
View File

@ -73,7 +73,7 @@ smp_86xx_kick_cpu(int nr)
/* Setup fake reset vector to call __secondary_start_mpc86xx. */
target = (unsigned long) __secondary_start_mpc86xx;
patch_branch(vector, target, BRANCH_SET_LINK);
patch_branch((struct ppc_inst *)vector, target, BRANCH_SET_LINK);
/* Kick that CPU */
smp_86xx_release_core(nr);
@ -83,7 +83,7 @@ smp_86xx_kick_cpu(int nr)
mdelay(1);
/* Restore the exception vector */
patch_instruction(vector, ppc_inst(save_vector));
patch_instruction((struct ppc_inst *)vector, ppc_inst(save_vector));
local_irq_restore(flags);

4
arch/powerpc/platforms/powermac/smp.c
View File

@ -814,7 +814,7 @@ static int smp_core99_kick_cpu(int nr)
* b __secondary_start_pmac_0 + nr*8
*/
target = (unsigned long) __secondary_start_pmac_0 + nr * 8;
patch_branch(vector, target, BRANCH_SET_LINK);
patch_branch((struct ppc_inst *)vector, target, BRANCH_SET_LINK);
/* Put some life in our friend */
pmac_call_feature(PMAC_FTR_RESET_CPU, NULL, nr, 0);
@ -827,7 +827,7 @@ static int smp_core99_kick_cpu(int nr)
mdelay(1);
/* Restore our exception vector */
patch_instruction(vector, ppc_inst(save_vector));
patch_instruction((struct ppc_inst *)vector, ppc_inst(save_vector));
local_irq_restore(flags);
if (ppc_md.progress) ppc_md.progress("smp_core99_kick_cpu done", 0x347);

22
arch/powerpc/xmon/xmon.c
View File

@ -100,7 +100,7 @@ static long *xmon_fault_jmp[NR_CPUS];
/* Breakpoint stuff */
struct bpt {
unsigned long address;
unsigned int *instr;
struct ppc_inst *instr;
atomic_t ref_count;
int enabled;
unsigned long pad;
@ -876,8 +876,8 @@ static struct bpt *new_breakpoint(unsigned long a)
for (bp = bpts; bp < &bpts[NBPTS]; ++bp) {
if (!bp->enabled && atomic_read(&bp->ref_count) == 0) {
bp->address = a;
bp->instr = bpt_table + ((bp - bpts) * BPT_WORDS);
patch_instruction(bp->instr + 1, bpinstr);
bp->instr = (void *)(bpt_table + ((bp - bpts) * BPT_WORDS));
patch_instruction(bp->instr + 1, ppc_inst(bpinstr));
return bp;
}
}
@ -889,7 +889,7 @@ static struct bpt *new_breakpoint(unsigned long a)
static void insert_bpts(void)
{
int i;
unsigned int instr;
struct ppc_inst instr;
struct bpt *bp;
bp = bpts;
@ -911,8 +911,8 @@ static void insert_bpts(void)
patch_instruction(bp->instr, instr);
if (bp->enabled & BP_CIABR)
continue;
if (patch_instruction((unsigned int *)bp->address,
bpinstr) != 0) {
if (patch_instruction((struct ppc_inst *)bp->address,
ppc_inst(bpinstr)) != 0) {
printf("Couldn't write instruction at %lx, "
"disabling breakpoint there\n", bp->address);
bp->enabled &= ~BP_TRAP;
@ -940,7 +940,7 @@ static void remove_bpts(void)
{
int i;
struct bpt *bp;
unsigned instr;
struct ppc_inst instr;
bp = bpts;
for (i = 0; i < NBPTS; ++i, ++bp) {
@ -949,7 +949,7 @@ static void remove_bpts(void)
if (mread(bp->address, &instr, 4) == 4
&& ppc_inst_equal(instr, ppc_inst(bpinstr))
&& patch_instruction(
(unsigned int *)bp->address, bp->instr[0]) != 0)
(struct ppc_inst *)bp->address, bp->instr[0]) != 0)
printf("Couldn't remove breakpoint at %lx\n",
bp->address);
}
@ -1156,7 +1156,7 @@ static int do_step(struct pt_regs *regs)
*/
static int do_step(struct pt_regs *regs)
{
unsigned int instr;
struct ppc_inst instr;
int stepped;
force_enable_xmon();
@ -1322,7 +1322,7 @@ csum(void)
*/
static long check_bp_loc(unsigned long addr)
{
unsigned int instr;
struct ppc_inst instr;
addr &= ~3;
if (!is_kernel_addr(addr)) {
@ -2848,7 +2848,7 @@ generic_inst_dump(unsigned long adr, long count, int praddr,
{
int nr, dotted;
unsigned long first_adr;
unsigned int inst, last_inst = ppc_inst(0);
struct ppc_inst inst, last_inst = ppc_inst(0);
unsigned char val[4];
dotted = 0;

6
arch/powerpc/xmon/xmon_bpts.h
View File

@ -4,11 +4,11 @@
#define NBPTS 256
#ifndef __ASSEMBLY__
#define BPT_SIZE (sizeof(unsigned int) * 2)
#define BPT_WORDS (BPT_SIZE / sizeof(unsigned int))
#include <asm/inst.h>
#define BPT_SIZE (sizeof(struct ppc_inst) * 2)
#define BPT_WORDS (BPT_SIZE / sizeof(struct ppc_inst))
extern unsigned int bpt_table[NBPTS * BPT_WORDS];
#endif /* __ASSEMBLY__ */
#endif /* XMON_BPTS_H */