summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/cpu/e132xs
diff options
context:
space:
mode:
author AJR <ajrhacker@users.noreply.github.com>2022-09-25 22:28:50 -0400
committer AJR <ajrhacker@users.noreply.github.com>2022-09-25 22:37:29 -0400
commit5dc22ca8fd325315c5d24b6ed6a037cc38e86527 (patch)
tree3b0810f803ef2e9dff52c203510825f7c0b79a9b /src/devices/cpu/e132xs
parenta61cb4cb61c544241712dfb039817e7c7b72e3c0 (diff)
eminline.h: Additions
- Add mul_16x16 inline function to perform a signed 16x16-bit multiplication with 32-bit result. This was moved from cpu/e132xs to unite it with the analogous 32x32 operations. - Add rotl_32, rotr_32, rotl_64 and rotr_64 inline functions to perform 32-bit and 64-bit circular shifts in either direction by the specified number of places, modulo 32 or 64. It is anticipated that these will eventually be replaced by standard functions in C++20's <bit> header, and so they have been given similar signatures and semantics (which are also validity-checked). - Remove LSL, LSR, ROL and ROR macros from cpu/arm and cpu/arm7 to ameliorate unnecessary obfuscation.
Diffstat (limited to 'src/devices/cpu/e132xs')
-rw-r--r--src/devices/cpu/e132xs/e132xsop.hxx8
1 files changed, 1 insertions, 7 deletions
diff --git a/src/devices/cpu/e132xs/e132xsop.hxx b/src/devices/cpu/e132xs/e132xsop.hxx
index e99f86d3ec3..953e82f4150 100644
--- a/src/devices/cpu/e132xs/e132xsop.hxx
+++ b/src/devices/cpu/e132xs/e132xsop.hxx
@@ -1513,8 +1513,7 @@ void hyperstone_device::hyperstone_rol()
const uint32_t mask = (uint32_t)(0xffffffff00000000ULL >> n);
#endif
- if (n)
- val = (val << n) | (val >> (32 - n));
+ val = rotl_32(val, n);
#ifdef MISSIONCRAFT_FLAGS
SR &= ~(V_MASK | Z_MASK | C_MASK | N_MASK);
@@ -2213,11 +2212,6 @@ void hyperstone_device::hyperstone_mul()
m_core->icount -= 3 << m_core->clck_scale;
}
-static inline int32_t mul_16x16(int16_t halfd, int16_t halfs)
-{
- return (int32_t)halfd * (int32_t)halfs;
-}
-
void hyperstone_device::hyperstone_extend()
{
m_instruction_length = (2<<19);