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authorRichard Henderson <rth@twiddle.net>2011-10-17 10:42:49 -0700
committerRichard Henderson <rth@twiddle.net>2011-10-26 13:55:26 -0700
commit30038fd81808f7c3bca92be2369e74c8ca7b3d69 (patch)
treebf718259c3d5bcc3e4f8605dbe9828c739be345d /target-sparc/ldst_helper.c
parent45c7b743cda3e87e528516ac1dd039d5932433a3 (diff)
downloadqemu-arm-30038fd81808f7c3bca92be2369e74c8ca7b3d69.tar.gz
target-sparc: Change fpr representation to doubles.
This allows a more efficient representation for 64-bit hosts. It should be about the same for 32-bit hosts, as we can still access the individual pieces of the double. Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-sparc/ldst_helper.c')
-rw-r--r--target-sparc/ldst_helper.c71
1 files changed, 30 insertions, 41 deletions
diff --git a/target-sparc/ldst_helper.c b/target-sparc/ldst_helper.c
index 80e540818f..b59707ecd2 100644
--- a/target-sparc/ldst_helper.c
+++ b/target-sparc/ldst_helper.c
@@ -2045,7 +2045,7 @@ void helper_ldda_asi(target_ulong addr, int asi, int rd)
void helper_ldf_asi(target_ulong addr, int asi, int size, int rd)
{
unsigned int i;
- CPU_DoubleU u;
+ target_ulong val;
helper_check_align(addr, 3);
addr = asi_address_mask(env, asi, addr);
@@ -2060,13 +2060,11 @@ void helper_ldf_asi(target_ulong addr, int asi, int size, int rd)
return;
}
helper_check_align(addr, 0x3f);
- for (i = 0; i < 16; i++) {
- *(uint32_t *)&env->fpr[rd++] = helper_ld_asi(addr, asi & 0x8f, 4,
- 0);
- addr += 4;
+ for (i = 0; i < 8; i++, rd += 2, addr += 8) {
+ env->fpr[rd/2].ll = helper_ld_asi(addr, asi & 0x8f, 8, 0);
}
-
return;
+
case 0x16: /* UA2007 Block load primary, user privilege */
case 0x17: /* UA2007 Block load secondary, user privilege */
case 0x1e: /* UA2007 Block load primary LE, user privilege */
@@ -2080,13 +2078,11 @@ void helper_ldf_asi(target_ulong addr, int asi, int size, int rd)
return;
}
helper_check_align(addr, 0x3f);
- for (i = 0; i < 16; i++) {
- *(uint32_t *)&env->fpr[rd++] = helper_ld_asi(addr, asi & 0x19, 4,
- 0);
- addr += 4;
+ for (i = 0; i < 8; i++, rd += 2, addr += 4) {
+ env->fpr[rd/2].ll = helper_ld_asi(addr, asi & 0x19, 8, 0);
}
-
return;
+
default:
break;
}
@@ -2094,20 +2090,19 @@ void helper_ldf_asi(target_ulong addr, int asi, int size, int rd)
switch (size) {
default:
case 4:
- *((uint32_t *)&env->fpr[rd]) = helper_ld_asi(addr, asi, size, 0);
+ val = helper_ld_asi(addr, asi, size, 0);
+ if (rd & 1) {
+ env->fpr[rd/2].l.lower = val;
+ } else {
+ env->fpr[rd/2].l.upper = val;
+ }
break;
case 8:
- u.ll = helper_ld_asi(addr, asi, size, 0);
- *((uint32_t *)&env->fpr[rd++]) = u.l.upper;
- *((uint32_t *)&env->fpr[rd++]) = u.l.lower;
+ env->fpr[rd/2].ll = helper_ld_asi(addr, asi, size, 0);
break;
case 16:
- u.ll = helper_ld_asi(addr, asi, 8, 0);
- *((uint32_t *)&env->fpr[rd++]) = u.l.upper;
- *((uint32_t *)&env->fpr[rd++]) = u.l.lower;
- u.ll = helper_ld_asi(addr + 8, asi, 8, 0);
- *((uint32_t *)&env->fpr[rd++]) = u.l.upper;
- *((uint32_t *)&env->fpr[rd++]) = u.l.lower;
+ env->fpr[rd/2].ll = helper_ld_asi(addr, asi, 8, 0);
+ env->fpr[rd/2 + 1].ll = helper_ld_asi(addr + 8, asi, 8, 0);
break;
}
}
@@ -2115,8 +2110,7 @@ void helper_ldf_asi(target_ulong addr, int asi, int size, int rd)
void helper_stf_asi(target_ulong addr, int asi, int size, int rd)
{
unsigned int i;
- target_ulong val = 0;
- CPU_DoubleU u;
+ target_ulong val;
helper_check_align(addr, 3);
addr = asi_address_mask(env, asi, addr);
@@ -2133,10 +2127,8 @@ void helper_stf_asi(target_ulong addr, int asi, int size, int rd)
return;
}
helper_check_align(addr, 0x3f);
- for (i = 0; i < 16; i++) {
- val = *(uint32_t *)&env->fpr[rd++];
- helper_st_asi(addr, val, asi & 0x8f, 4);
- addr += 4;
+ for (i = 0; i < 8; i++, rd += 2, addr += 8) {
+ helper_st_asi(addr, env->fpr[rd/2].ll, asi & 0x8f, 8);
}
return;
@@ -2153,10 +2145,8 @@ void helper_stf_asi(target_ulong addr, int asi, int size, int rd)
return;
}
helper_check_align(addr, 0x3f);
- for (i = 0; i < 16; i++) {
- val = *(uint32_t *)&env->fpr[rd++];
- helper_st_asi(addr, val, asi & 0x19, 4);
- addr += 4;
+ for (i = 0; i < 8; i++, rd += 2, addr += 8) {
+ helper_st_asi(addr, env->fpr[rd/2].ll, asi & 0x19, 8);
}
return;
@@ -2167,20 +2157,19 @@ void helper_stf_asi(target_ulong addr, int asi, int size, int rd)
switch (size) {
default:
case 4:
- helper_st_asi(addr, *(uint32_t *)&env->fpr[rd], asi, size);
+ if (rd & 1) {
+ val = env->fpr[rd/2].l.lower;
+ } else {
+ val = env->fpr[rd/2].l.upper;
+ }
+ helper_st_asi(addr, val, asi, size);
break;
case 8:
- u.l.upper = *(uint32_t *)&env->fpr[rd++];
- u.l.lower = *(uint32_t *)&env->fpr[rd++];
- helper_st_asi(addr, u.ll, asi, size);
+ helper_st_asi(addr, env->fpr[rd/2].ll, asi, size);
break;
case 16:
- u.l.upper = *(uint32_t *)&env->fpr[rd++];
- u.l.lower = *(uint32_t *)&env->fpr[rd++];
- helper_st_asi(addr, u.ll, asi, 8);
- u.l.upper = *(uint32_t *)&env->fpr[rd++];
- u.l.lower = *(uint32_t *)&env->fpr[rd++];
- helper_st_asi(addr + 8, u.ll, asi, 8);
+ helper_st_asi(addr, env->fpr[rd/2].ll, asi, 8);
+ helper_st_asi(addr + 8, env->fpr[rd/2 + 1].ll, asi, 8);
break;
}
}