aboutsummaryrefslogtreecommitdiff
path: root/target/mips
diff options
context:
space:
mode:
Diffstat (limited to 'target/mips')
-rw-r--r--target/mips/tcg/mxu_translate.c36
-rw-r--r--target/mips/tcg/sysemu/tlb_helper.c48
2 files changed, 49 insertions, 35 deletions
diff --git a/target/mips/tcg/mxu_translate.c b/target/mips/tcg/mxu_translate.c
index deb8060..e662acd 100644
--- a/target/mips/tcg/mxu_translate.c
+++ b/target/mips/tcg/mxu_translate.c
@@ -609,7 +609,7 @@ enum {
static TCGv mxu_gpr[NUMBER_OF_MXU_REGISTERS - 1];
static TCGv mxu_CR;
-static const char mxuregnames[][4] = {
+static const char mxuregnames[NUMBER_OF_MXU_REGISTERS][4] = {
"XR1", "XR2", "XR3", "XR4", "XR5", "XR6", "XR7", "XR8",
"XR9", "XR10", "XR11", "XR12", "XR13", "XR14", "XR15", "XCR",
};
@@ -644,6 +644,16 @@ static inline void gen_store_mxu_gpr(TCGv t, unsigned int reg)
}
}
+static inline void gen_extract_mxu_gpr(TCGv t, unsigned int reg,
+ unsigned int ofs, unsigned int len)
+{
+ if (reg == 0) {
+ tcg_gen_movi_tl(t, 0);
+ } else if (reg <= 15) {
+ tcg_gen_extract_tl(t, mxu_gpr[reg - 1], ofs, len);
+ }
+}
+
/* MXU control register moves. */
static inline void gen_load_mxu_cr(TCGv t)
{
@@ -2434,8 +2444,12 @@ static void gen_mxu_S32SLT(DisasContext *ctx)
tcg_gen_movi_tl(mxu_gpr[XRa - 1], 0);
} else {
/* the most general case */
- tcg_gen_setcond_tl(TCG_COND_LT, mxu_gpr[XRa - 1],
- mxu_gpr[XRb - 1], mxu_gpr[XRc - 1]);
+ TCGv t0 = tcg_temp_new();
+ TCGv t1 = tcg_temp_new();
+
+ gen_load_mxu_gpr(t0, XRb);
+ gen_load_mxu_gpr(t1, XRc);
+ tcg_gen_setcond_tl(TCG_COND_LT, mxu_gpr[XRa - 1], t0, t1);
}
}
@@ -3000,10 +3014,10 @@ static void gen_mxu_q8adde(DisasContext *ctx, bool accumulate)
TCGv t5 = tcg_temp_new();
if (XRa != 0) {
- tcg_gen_extract_tl(t0, mxu_gpr[XRb - 1], 16, 8);
- tcg_gen_extract_tl(t1, mxu_gpr[XRc - 1], 16, 8);
- tcg_gen_extract_tl(t2, mxu_gpr[XRb - 1], 24, 8);
- tcg_gen_extract_tl(t3, mxu_gpr[XRc - 1], 24, 8);
+ gen_extract_mxu_gpr(t0, XRb, 16, 8);
+ gen_extract_mxu_gpr(t1, XRc, 16, 8);
+ gen_extract_mxu_gpr(t2, XRb, 24, 8);
+ gen_extract_mxu_gpr(t3, XRc, 24, 8);
if (aptn2 & 2) {
tcg_gen_sub_tl(t0, t0, t1);
tcg_gen_sub_tl(t2, t2, t3);
@@ -3023,10 +3037,10 @@ static void gen_mxu_q8adde(DisasContext *ctx, bool accumulate)
tcg_gen_or_tl(t4, t2, t0);
}
if (XRd != 0) {
- tcg_gen_extract_tl(t0, mxu_gpr[XRb - 1], 0, 8);
- tcg_gen_extract_tl(t1, mxu_gpr[XRc - 1], 0, 8);
- tcg_gen_extract_tl(t2, mxu_gpr[XRb - 1], 8, 8);
- tcg_gen_extract_tl(t3, mxu_gpr[XRc - 1], 8, 8);
+ gen_extract_mxu_gpr(t0, XRb, 0, 8);
+ gen_extract_mxu_gpr(t1, XRc, 0, 8);
+ gen_extract_mxu_gpr(t2, XRb, 8, 8);
+ gen_extract_mxu_gpr(t3, XRc, 8, 8);
if (aptn2 & 1) {
tcg_gen_sub_tl(t0, t0, t1);
tcg_gen_sub_tl(t2, t2, t3);
diff --git a/target/mips/tcg/sysemu/tlb_helper.c b/target/mips/tcg/sysemu/tlb_helper.c
index e5e1e9d..7dbc2e2 100644
--- a/target/mips/tcg/sysemu/tlb_helper.c
+++ b/target/mips/tcg/sysemu/tlb_helper.c
@@ -623,18 +623,13 @@ static uint64_t get_tlb_entry_layout(CPUMIPSState *env, uint64_t entry,
static int walk_directory(CPUMIPSState *env, uint64_t *vaddr,
int directory_index, bool *huge_page, bool *hgpg_directory_hit,
- uint64_t *pw_entrylo0, uint64_t *pw_entrylo1)
+ uint64_t *pw_entrylo0, uint64_t *pw_entrylo1,
+ unsigned directory_shift, unsigned leaf_shift)
{
int dph = (env->CP0_PWCtl >> CP0PC_DPH) & 0x1;
int psn = (env->CP0_PWCtl >> CP0PC_PSN) & 0x3F;
int hugepg = (env->CP0_PWCtl >> CP0PC_HUGEPG) & 0x1;
int pf_ptew = (env->CP0_PWField >> CP0PF_PTEW) & 0x3F;
- int ptew = (env->CP0_PWSize >> CP0PS_PTEW) & 0x3F;
- int native_shift = (((env->CP0_PWSize >> CP0PS_PS) & 1) == 0) ? 2 : 3;
- int directory_shift = (ptew > 1) ? -1 :
- (hugepg && (ptew == 1)) ? native_shift + 1 : native_shift;
- int leaf_shift = (ptew > 1) ? -1 :
- (ptew == 1) ? native_shift + 1 : native_shift;
uint32_t direntry_size = 1 << (directory_shift + 3);
uint32_t leafentry_size = 1 << (leaf_shift + 3);
uint64_t entry;
@@ -735,21 +730,11 @@ static bool page_table_walk_refill(CPUMIPSState *env, vaddr address,
/* Other HTW configs */
int hugepg = (env->CP0_PWCtl >> CP0PC_HUGEPG) & 0x1;
-
- /* HTW Shift values (depend on entry size) */
- int directory_shift = (ptew > 1) ? -1 :
- (hugepg && (ptew == 1)) ? native_shift + 1 : native_shift;
- int leaf_shift = (ptew > 1) ? -1 :
- (ptew == 1) ? native_shift + 1 : native_shift;
+ unsigned directory_shift, leaf_shift;
/* Offsets into tables */
- int goffset = gindex << directory_shift;
- int uoffset = uindex << directory_shift;
- int moffset = mindex << directory_shift;
- int ptoffset0 = (ptindex >> 1) << (leaf_shift + 1);
- int ptoffset1 = ptoffset0 | (1 << (leaf_shift));
-
- uint32_t leafentry_size = 1 << (leaf_shift + 3);
+ unsigned goffset, uoffset, moffset, ptoffset0, ptoffset1;
+ uint32_t leafentry_size;
/* Starting address - Page Table Base */
uint64_t vaddr = env->CP0_PWBase;
@@ -771,15 +756,28 @@ static bool page_table_walk_refill(CPUMIPSState *env, vaddr address,
/* no structure to walk */
return false;
}
- if ((directory_shift == -1) || (leaf_shift == -1)) {
+ if (ptew > 1) {
return false;
}
+ /* HTW Shift values (depend on entry size) */
+ directory_shift = (hugepg && (ptew == 1)) ? native_shift + 1 : native_shift;
+ leaf_shift = (ptew == 1) ? native_shift + 1 : native_shift;
+
+ goffset = gindex << directory_shift;
+ uoffset = uindex << directory_shift;
+ moffset = mindex << directory_shift;
+ ptoffset0 = (ptindex >> 1) << (leaf_shift + 1);
+ ptoffset1 = ptoffset0 | (1 << (leaf_shift));
+
+ leafentry_size = 1 << (leaf_shift + 3);
+
/* Global Directory */
if (gdw > 0) {
vaddr |= goffset;
switch (walk_directory(env, &vaddr, pf_gdw, &huge_page, &hgpg_gdhit,
- &pw_entrylo0, &pw_entrylo1))
+ &pw_entrylo0, &pw_entrylo1,
+ directory_shift, leaf_shift))
{
case 0:
return false;
@@ -795,7 +793,8 @@ static bool page_table_walk_refill(CPUMIPSState *env, vaddr address,
if (udw > 0) {
vaddr |= uoffset;
switch (walk_directory(env, &vaddr, pf_udw, &huge_page, &hgpg_udhit,
- &pw_entrylo0, &pw_entrylo1))
+ &pw_entrylo0, &pw_entrylo1,
+ directory_shift, leaf_shift))
{
case 0:
return false;
@@ -811,7 +810,8 @@ static bool page_table_walk_refill(CPUMIPSState *env, vaddr address,
if (mdw > 0) {
vaddr |= moffset;
switch (walk_directory(env, &vaddr, pf_mdw, &huge_page, &hgpg_mdhit,
- &pw_entrylo0, &pw_entrylo1))
+ &pw_entrylo0, &pw_entrylo1,
+ directory_shift, leaf_shift))
{
case 0:
return false;
generated by cgit v1.1 at 2025-02-19 11:34:08 +0000