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-rw-r--r--arch/powerpc/lib/sstep.c610
1 files changed, 570 insertions, 40 deletions
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index b80ccff23657..b1ba74117ad5 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -42,8 +42,29 @@ extern int do_stfs(int rn, unsigned long ea);
extern int do_stfd(int rn, unsigned long ea);
extern int do_lvx(int rn, unsigned long ea);
extern int do_stvx(int rn, unsigned long ea);
-extern int do_lxvd2x(int rn, unsigned long ea);
-extern int do_stxvd2x(int rn, unsigned long ea);
+extern void load_vsrn(int vsr, const void *p);
+extern void store_vsrn(int vsr, void *p);
+extern void conv_sp_to_dp(const float *sp, double *dp);
+extern void conv_dp_to_sp(const double *dp, float *sp);
+#endif
+
+#ifdef __powerpc64__
+/*
+ * Functions in quad.S
+ */
+extern int do_lq(unsigned long ea, unsigned long *regs);
+extern int do_stq(unsigned long ea, unsigned long val0, unsigned long val1);
+extern int do_lqarx(unsigned long ea, unsigned long *regs);
+extern int do_stqcx(unsigned long ea, unsigned long val0, unsigned long val1,
+ unsigned int *crp);
+#endif
+
+#ifdef __LITTLE_ENDIAN__
+#define IS_LE 1
+#define IS_BE 0
+#else
+#define IS_LE 0
+#define IS_BE 1
#endif
/*
@@ -125,6 +146,23 @@ static nokprobe_inline unsigned long dsform_ea(unsigned int instr,
return truncate_if_32bit(regs->msr, ea);
}
+
+/*
+ * Calculate effective address for a DQ-form instruction
+ */
+static nokprobe_inline unsigned long dqform_ea(unsigned int instr,
+ const struct pt_regs *regs)
+{
+ int ra;
+ unsigned long ea;
+
+ ra = (instr >> 16) & 0x1f;
+ ea = (signed short) (instr & ~0xf); /* sign-extend */
+ if (ra)
+ ea += regs->gpr[ra];
+
+ return truncate_if_32bit(regs->msr, ea);
+}
#endif /* __powerpc64 */
/*
@@ -454,43 +492,195 @@ static nokprobe_inline int do_vec_store(int rn, int (*func)(int, unsigned long),
}
#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_VSX
-static nokprobe_inline int do_vsx_load(int rn, int (*func)(int, unsigned long),
- unsigned long ea, struct pt_regs *regs)
+#ifdef __powerpc64__
+static nokprobe_inline int emulate_lq(struct pt_regs *regs, unsigned long ea,
+ int reg)
{
int err;
- unsigned long val[2];
if (!address_ok(regs, ea, 16))
return -EFAULT;
- if ((ea & 3) == 0)
- return (*func)(rn, ea);
- err = read_mem_unaligned(&val[0], ea, 8, regs);
- if (!err)
- err = read_mem_unaligned(&val[1], ea + 8, 8, regs);
+ /* if aligned, should be atomic */
+ if ((ea & 0xf) == 0)
+ return do_lq(ea, &regs->gpr[reg]);
+
+ err = read_mem(&regs->gpr[reg + IS_LE], ea, 8, regs);
if (!err)
- err = (*func)(rn, (unsigned long) &val[0]);
+ err = read_mem(&regs->gpr[reg + IS_BE], ea + 8, 8, regs);
return err;
}
-static nokprobe_inline int do_vsx_store(int rn, int (*func)(int, unsigned long),
- unsigned long ea, struct pt_regs *regs)
+static nokprobe_inline int emulate_stq(struct pt_regs *regs, unsigned long ea,
+ int reg)
{
int err;
- unsigned long val[2];
if (!address_ok(regs, ea, 16))
return -EFAULT;
- if ((ea & 3) == 0)
- return (*func)(rn, ea);
- err = (*func)(rn, (unsigned long) &val[0]);
- if (err)
- return err;
- err = write_mem_unaligned(val[0], ea, 8, regs);
+ /* if aligned, should be atomic */
+ if ((ea & 0xf) == 0)
+ return do_stq(ea, regs->gpr[reg], regs->gpr[reg + 1]);
+
+ err = write_mem(regs->gpr[reg + IS_LE], ea, 8, regs);
if (!err)
- err = write_mem_unaligned(val[1], ea + 8, 8, regs);
+ err = write_mem(regs->gpr[reg + IS_BE], ea + 8, 8, regs);
return err;
}
+#endif /* __powerpc64 */
+
+#ifdef CONFIG_VSX
+void emulate_vsx_load(struct instruction_op *op, union vsx_reg *reg,
+ const void *mem)
+{
+ int size, read_size;
+ int i, j;
+ const unsigned int *wp;
+ const unsigned short *hp;
+ const unsigned char *bp;
+
+ size = GETSIZE(op->type);
+ reg->d[0] = reg->d[1] = 0;
+
+ switch (op->element_size) {
+ case 16:
+ /* whole vector; lxv[x] or lxvl[l] */
+ if (size == 0)
+ break;
+ memcpy(reg, mem, size);
+ if (IS_LE && (op->vsx_flags & VSX_LDLEFT)) {
+ /* reverse 16 bytes */
+ unsigned long tmp;
+ tmp = byterev_8(reg->d[0]);
+ reg->d[0] = byterev_8(reg->d[1]);
+ reg->d[1] = tmp;
+ }
+ break;
+ case 8:
+ /* scalar loads, lxvd2x, lxvdsx */
+ read_size = (size >= 8) ? 8 : size;
+ i = IS_LE ? 8 : 8 - read_size;
+ memcpy(&reg->b[i], mem, read_size);
+ if (size < 8) {
+ if (op->type & SIGNEXT) {
+ /* size == 4 is the only case here */
+ reg->d[IS_LE] = (signed int) reg->d[IS_LE];
+ } else if (op->vsx_flags & VSX_FPCONV) {
+ preempt_disable();
+ conv_sp_to_dp(&reg->fp[1 + IS_LE],
+ &reg->dp[IS_LE]);
+ preempt_enable();
+ }
+ } else {
+ if (size == 16)
+ reg->d[IS_BE] = *(unsigned long *)(mem + 8);
+ else if (op->vsx_flags & VSX_SPLAT)
+ reg->d[IS_BE] = reg->d[IS_LE];
+ }
+ break;
+ case 4:
+ /* lxvw4x, lxvwsx */
+ wp = mem;
+ for (j = 0; j < size / 4; ++j) {
+ i = IS_LE ? 3 - j : j;
+ reg->w[i] = *wp++;
+ }
+ if (op->vsx_flags & VSX_SPLAT) {
+ u32 val = reg->w[IS_LE ? 3 : 0];
+ for (; j < 4; ++j) {
+ i = IS_LE ? 3 - j : j;
+ reg->w[i] = val;
+ }
+ }
+ break;
+ case 2:
+ /* lxvh8x */
+ hp = mem;
+ for (j = 0; j < size / 2; ++j) {
+ i = IS_LE ? 7 - j : j;
+ reg->h[i] = *hp++;
+ }
+ break;
+ case 1:
+ /* lxvb16x */
+ bp = mem;
+ for (j = 0; j < size; ++j) {
+ i = IS_LE ? 15 - j : j;
+ reg->b[i] = *bp++;
+ }
+ break;
+ }
+}
+EXPORT_SYMBOL_GPL(emulate_vsx_load);
+NOKPROBE_SYMBOL(emulate_vsx_load);
+
+void emulate_vsx_store(struct instruction_op *op, const union vsx_reg *reg,
+ void *mem)
+{
+ int size, write_size;
+ int i, j;
+ union vsx_reg buf;
+ unsigned int *wp;
+ unsigned short *hp;
+ unsigned char *bp;
+
+ size = GETSIZE(op->type);
+
+ switch (op->element_size) {
+ case 16:
+ /* stxv, stxvx, stxvl, stxvll */
+ if (size == 0)
+ break;
+ if (IS_LE && (op->vsx_flags & VSX_LDLEFT)) {
+ /* reverse 16 bytes */
+ buf.d[0] = byterev_8(reg->d[1]);
+ buf.d[1] = byterev_8(reg->d[0]);
+ reg = &buf;
+ }
+ memcpy(mem, reg, size);
+ break;
+ case 8:
+ /* scalar stores, stxvd2x */
+ write_size = (size >= 8) ? 8 : size;
+ i = IS_LE ? 8 : 8 - write_size;
+ if (size < 8 && op->vsx_flags & VSX_FPCONV) {
+ buf.d[0] = buf.d[1] = 0;
+ preempt_disable();
+ conv_dp_to_sp(&reg->dp[IS_LE], &buf.fp[1 + IS_LE]);
+ preempt_enable();
+ reg = &buf;
+ }
+ memcpy(mem, &reg->b[i], write_size);
+ if (size == 16)
+ memcpy(mem + 8, &reg->d[IS_BE], 8);
+ break;
+ case 4:
+ /* stxvw4x */
+ wp = mem;
+ for (j = 0; j < size / 4; ++j) {
+ i = IS_LE ? 3 - j : j;
+ *wp++ = reg->w[i];
+ }
+ break;
+ case 2:
+ /* stxvh8x */
+ hp = mem;
+ for (j = 0; j < size / 2; ++j) {
+ i = IS_LE ? 7 - j : j;
+ *hp++ = reg->h[i];
+ }
+ break;
+ case 1:
+ /* stvxb16x */
+ bp = mem;
+ for (j = 0; j < size; ++j) {
+ i = IS_LE ? 15 - j : j;
+ *bp++ = reg->b[i];
+ }
+ break;
+ }
+}
+EXPORT_SYMBOL_GPL(emulate_vsx_store);
+NOKPROBE_SYMBOL(emulate_vsx_store);
#endif /* CONFIG_VSX */
#define __put_user_asmx(x, addr, err, op, cr) \
@@ -1455,14 +1645,15 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
break;
}
- /*
- * Loads and stores.
- */
+/*
+ * Loads and stores.
+ */
op->type = UNKNOWN;
op->update_reg = ra;
op->reg = rd;
op->val = regs->gpr[rd];
u = (instr >> 20) & UPDATE;
+ op->vsx_flags = 0;
switch (opcode) {
case 31:
@@ -1486,9 +1677,30 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
op->type = MKOP(STCX, 0, 8);
break;
- case 21: /* ldx */
- case 53: /* ldux */
- op->type = MKOP(LOAD, u, 8);
+ case 52: /* lbarx */
+ op->type = MKOP(LARX, 0, 1);
+ break;
+
+ case 694: /* stbcx. */
+ op->type = MKOP(STCX, 0, 1);
+ break;
+
+ case 116: /* lharx */
+ op->type = MKOP(LARX, 0, 2);
+ break;
+
+ case 726: /* sthcx. */
+ op->type = MKOP(STCX, 0, 2);
+ break;
+
+ case 276: /* lqarx */
+ if (!((rd & 1) || rd == ra || rd == rb))
+ op->type = MKOP(LARX, 0, 16);
+ break;
+
+ case 182: /* stqcx. */
+ if (!(rd & 1))
+ op->type = MKOP(STCX, 0, 16);
break;
#endif
@@ -1506,6 +1718,7 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
case 103: /* lvx */
case 359: /* lvxl */
op->type = MKOP(LOAD_VMX, 0, 16);
+ op->element_size = 16;
break;
case 231: /* stvx */
@@ -1515,6 +1728,11 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
#endif /* CONFIG_ALTIVEC */
#ifdef __powerpc64__
+ case 21: /* ldx */
+ case 53: /* ldux */
+ op->type = MKOP(LOAD, u, 8);
+ break;
+
case 149: /* stdx */
case 181: /* stdux */
op->type = MKOP(STORE, u, 8);
@@ -1635,16 +1853,184 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
break;
#ifdef CONFIG_VSX
+ case 12: /* lxsiwzx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 4);
+ op->element_size = 8;
+ break;
+
+ case 76: /* lxsiwax */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, SIGNEXT, 4);
+ op->element_size = 8;
+ break;
+
+ case 140: /* stxsiwx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 4);
+ op->element_size = 8;
+ break;
+
+ case 268: /* lxvx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 16);
+ op->element_size = 16;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 269: /* lxvl */
+ case 301: { /* lxvll */
+ int nb;
+ op->reg = rd | ((instr & 1) << 5);
+ op->ea = ra ? regs->gpr[ra] : 0;
+ nb = regs->gpr[rb] & 0xff;
+ if (nb > 16)
+ nb = 16;
+ op->type = MKOP(LOAD_VSX, 0, nb);
+ op->element_size = 16;
+ op->vsx_flags = ((instr & 0x20) ? VSX_LDLEFT : 0) |
+ VSX_CHECK_VEC;
+ break;
+ }
+ case 332: /* lxvdsx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 8);
+ op->element_size = 8;
+ op->vsx_flags = VSX_SPLAT;
+ break;
+
+ case 364: /* lxvwsx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 4);
+ op->element_size = 4;
+ op->vsx_flags = VSX_SPLAT | VSX_CHECK_VEC;
+ break;
+
+ case 396: /* stxvx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 16);
+ op->element_size = 16;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 397: /* stxvl */
+ case 429: { /* stxvll */
+ int nb;
+ op->reg = rd | ((instr & 1) << 5);
+ op->ea = ra ? regs->gpr[ra] : 0;
+ nb = regs->gpr[rb] & 0xff;
+ if (nb > 16)
+ nb = 16;
+ op->type = MKOP(STORE_VSX, 0, nb);
+ op->element_size = 16;
+ op->vsx_flags = ((instr & 0x20) ? VSX_LDLEFT : 0) |
+ VSX_CHECK_VEC;
+ break;
+ }
+ case 524: /* lxsspx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 4);
+ op->element_size = 8;
+ op->vsx_flags = VSX_FPCONV;
+ break;
+
+ case 588: /* lxsdx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 8);
+ op->element_size = 8;
+ break;
+
+ case 652: /* stxsspx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 4);
+ op->element_size = 8;
+ op->vsx_flags = VSX_FPCONV;
+ break;
+
+ case 716: /* stxsdx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 8);
+ op->element_size = 8;
+ break;
+
+ case 780: /* lxvw4x */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 16);
+ op->element_size = 4;
+ break;
+
+ case 781: /* lxsibzx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 1);
+ op->element_size = 8;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 812: /* lxvh8x */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 16);
+ op->element_size = 2;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 813: /* lxsihzx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 2);
+ op->element_size = 8;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
case 844: /* lxvd2x */
- case 876: /* lxvd2ux */
op->reg = rd | ((instr & 1) << 5);
- op->type = MKOP(LOAD_VSX, u, 16);
+ op->type = MKOP(LOAD_VSX, 0, 16);
+ op->element_size = 8;
+ break;
+
+ case 876: /* lxvb16x */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(LOAD_VSX, 0, 16);
+ op->element_size = 1;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 908: /* stxvw4x */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 16);
+ op->element_size = 4;
+ break;
+
+ case 909: /* stxsibx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 1);
+ op->element_size = 8;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 940: /* stxvh8x */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 16);
+ op->element_size = 2;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 941: /* stxsihx */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 2);
+ op->element_size = 8;
+ op->vsx_flags = VSX_CHECK_VEC;
break;
case 972: /* stxvd2x */
- case 1004: /* stxvd2ux */
op->reg = rd | ((instr & 1) << 5);
- op->type = MKOP(STORE_VSX, u, 16);
+ op->type = MKOP(STORE_VSX, 0, 16);
+ op->element_size = 8;
+ break;
+
+ case 1004: /* stxvb16x */
+ op->reg = rd | ((instr & 1) << 5);
+ op->type = MKOP(STORE_VSX, 0, 16);
+ op->element_size = 1;
+ op->vsx_flags = VSX_CHECK_VEC;
break;
#endif /* CONFIG_VSX */
@@ -1732,6 +2118,34 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
#endif
#ifdef __powerpc64__
+ case 56: /* lq */
+ if (!((rd & 1) || (rd == ra)))
+ op->type = MKOP(LOAD, 0, 16);
+ op->ea = dqform_ea(instr, regs);
+ break;
+#endif
+
+#ifdef CONFIG_VSX
+ case 57: /* lxsd, lxssp */
+ op->ea = dsform_ea(instr, regs);
+ switch (instr & 3) {
+ case 2: /* lxsd */
+ op->reg = rd + 32;
+ op->type = MKOP(LOAD_VSX, 0, 8);
+ op->element_size = 8;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+ case 3: /* lxssp */
+ op->reg = rd + 32;
+ op->type = MKOP(LOAD_VSX, 0, 4);
+ op->element_size = 8;
+ op->vsx_flags = VSX_FPCONV | VSX_CHECK_VEC;
+ break;
+ }
+ break;
+#endif /* CONFIG_VSX */
+
+#ifdef __powerpc64__
case 58: /* ld[u], lwa */
op->ea = dsform_ea(instr, regs);
switch (instr & 3) {
@@ -1746,7 +2160,51 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
break;
}
break;
+#endif
+#ifdef CONFIG_VSX
+ case 61: /* lxv, stxsd, stxssp, stxv */
+ switch (instr & 7) {
+ case 1: /* lxv */
+ op->ea = dqform_ea(instr, regs);
+ if (instr & 8)
+ op->reg = rd + 32;
+ op->type = MKOP(LOAD_VSX, 0, 16);
+ op->element_size = 16;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 2: /* stxsd with LSB of DS field = 0 */
+ case 6: /* stxsd with LSB of DS field = 1 */
+ op->ea = dsform_ea(instr, regs);
+ op->reg = rd + 32;
+ op->type = MKOP(STORE_VSX, 0, 8);
+ op->element_size = 8;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+
+ case 3: /* stxssp with LSB of DS field = 0 */
+ case 7: /* stxssp with LSB of DS field = 1 */
+ op->ea = dsform_ea(instr, regs);
+ op->reg = rd + 32;
+ op->type = MKOP(STORE_VSX, 0, 4);
+ op->element_size = 8;
+ op->vsx_flags = VSX_FPCONV | VSX_CHECK_VEC;
+ break;
+
+ case 5: /* stxv */
+ op->ea = dqform_ea(instr, regs);
+ if (instr & 8)
+ op->reg = rd + 32;
+ op->type = MKOP(STORE_VSX, 0, 16);
+ op->element_size = 16;
+ op->vsx_flags = VSX_CHECK_VEC;
+ break;
+ }
+ break;
+#endif /* CONFIG_VSX */
+
+#ifdef __powerpc64__
case 62: /* std[u] */
op->ea = dsform_ea(instr, regs);
switch (instr & 3) {
@@ -1756,6 +2214,10 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
case 1: /* stdu */
op->type = MKOP(STORE, UPDATE, 8);
break;
+ case 2: /* stq */
+ if (!(rd & 1))
+ op->type = MKOP(STORE, 0, 16);
+ break;
}
break;
#endif /* __powerpc64__ */
@@ -1994,6 +2456,14 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
return 0;
err = 0;
switch (size) {
+#ifdef __powerpc64__
+ case 1:
+ __get_user_asmx(val, op.ea, err, "lbarx");
+ break;
+ case 2:
+ __get_user_asmx(val, op.ea, err, "lharx");
+ break;
+#endif
case 4:
__get_user_asmx(val, op.ea, err, "lwarx");
break;
@@ -2001,6 +2471,9 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
case 8:
__get_user_asmx(val, op.ea, err, "ldarx");
break;
+ case 16:
+ err = do_lqarx(op.ea, &regs->gpr[op.reg]);
+ goto ldst_done;
#endif
default:
return 0;
@@ -2016,6 +2489,14 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
return 0;
err = 0;
switch (size) {
+#ifdef __powerpc64__
+ case 1:
+ __put_user_asmx(op.val, op.ea, err, "stbcx.", cr);
+ break;
+ case 2:
+ __put_user_asmx(op.val, op.ea, err, "stbcx.", cr);
+ break;
+#endif
case 4:
__put_user_asmx(op.val, op.ea, err, "stwcx.", cr);
break;
@@ -2023,6 +2504,10 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
case 8:
__put_user_asmx(op.val, op.ea, err, "stdcx.", cr);
break;
+ case 16:
+ err = do_stqcx(op.ea, regs->gpr[op.reg],
+ regs->gpr[op.reg + 1], &cr);
+ break;
#endif
default:
return 0;
@@ -2034,6 +2519,12 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
goto ldst_done;
case LOAD:
+#ifdef __powerpc64__
+ if (size == 16) {
+ err = emulate_lq(regs, op.ea, op.reg);
+ goto ldst_done;
+ }
+#endif
err = read_mem(&regs->gpr[op.reg], op.ea, size, regs);
if (!err) {
if (op.type & SIGNEXT)
@@ -2057,15 +2548,31 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
case LOAD_VMX:
if (!(regs->msr & MSR_VEC))
return 0;
- err = do_vec_load(op.reg, do_lvx, op.ea & ~0xfUL, regs);
+ err = do_vec_load(op.reg, do_lvx, op.ea, regs);
goto ldst_done;
#endif
#ifdef CONFIG_VSX
- case LOAD_VSX:
- if (!(regs->msr & MSR_VSX))
+ case LOAD_VSX: {
+ char mem[16];
+ union vsx_reg buf;
+ unsigned long msrbit = MSR_VSX;
+
+ /*
+ * Some VSX instructions check the MSR_VEC bit rather than MSR_VSX
+ * when the target of the instruction is a vector register.
+ */
+ if (op.reg >= 32 && (op.vsx_flags & VSX_CHECK_VEC))
+ msrbit = MSR_VEC;
+ if (!(regs->msr & msrbit))
+ return 0;
+ if (!address_ok(regs, op.ea, size) ||
+ __copy_from_user(mem, (void __user *)op.ea, size))
return 0;
- err = do_vsx_load(op.reg, do_lxvd2x, op.ea, regs);
+
+ emulate_vsx_load(&op, &buf, mem);
+ load_vsrn(op.reg, &buf);
goto ldst_done;
+ }
#endif
case LOAD_MULTI:
if (regs->msr & MSR_LE)
@@ -2086,6 +2593,12 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
goto instr_done;
case STORE:
+#ifdef __powerpc64__
+ if (size == 16) {
+ err = emulate_stq(regs, op.ea, op.reg);
+ goto ldst_done;
+ }
+#endif
if ((op.type & UPDATE) && size == sizeof(long) &&
op.reg == 1 && op.update_reg == 1 &&
!(regs->msr & MSR_PR) &&
@@ -2110,15 +2623,32 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
case STORE_VMX:
if (!(regs->msr & MSR_VEC))
return 0;
- err = do_vec_store(op.reg, do_stvx, op.ea & ~0xfUL, regs);
+ err = do_vec_store(op.reg, do_stvx, op.ea, regs);
goto ldst_done;
#endif
#ifdef CONFIG_VSX
- case STORE_VSX:
- if (!(regs->msr & MSR_VSX))
+ case STORE_VSX: {
+ char mem[16];
+ union vsx_reg buf;
+ unsigned long msrbit = MSR_VSX;
+
+ /*
+ * Some VSX instructions check the MSR_VEC bit rather than MSR_VSX
+ * when the target of the instruction is a vector register.
+ */
+ if (op.reg >= 32 && (op.vsx_flags & VSX_CHECK_VEC))
+ msrbit = MSR_VEC;
+ if (!(regs->msr & msrbit))
+ return 0;
+ if (!address_ok(regs, op.ea, size))
+ return 0;
+
+ store_vsrn(op.reg, &buf);
+ emulate_vsx_store(&op, &buf, mem);
+ if (__copy_to_user((void __user *)op.ea, mem, size))
return 0;
- err = do_vsx_store(op.reg, do_stxvd2x, op.ea, regs);
goto ldst_done;
+ }
#endif
case STORE_MULTI:
if (regs->msr & MSR_LE)
generated by cgit (git 2.34.1) at 2024-05-12 22:28:51 +0000