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target/arm: Use neon_element_offset in vfp_reg_offset

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This seems a bit more readable than using offsetof CPU_DoubleU.

Backports d8719785fde2f5041986853a314c05c6f567d3cb
This commit is contained in:
Richard Henderson 2021-03-02 11:55:48 -05:00 committed by Lioncash
parent c1ca9e53da
commit e390c1ec7f
1 changed files with 4 additions and 9 deletions
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13
qemu/target/arm/translate.c
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@ -1167,18 +1167,13 @@ neon_element_offset(int reg, int element, MemOp size)
return neon_full_reg_offset(reg) + ofs;
}
static inline long vfp_reg_offset(bool dp, unsigned reg)
/* Return the offset of a VFP Dreg (dp = true) or VFP Sreg (dp = false). */
static long vfp_reg_offset(bool dp, unsigned reg)
{
if (dp) {
return offsetof(CPUARMState, vfp.zregs[reg >> 1].d[reg & 1]);
return neon_element_offset(reg, 0, MO_64);
} else {
long ofs = offsetof(CPUARMState, vfp.zregs[reg >> 2].d[(reg >> 1) & 1]);
if (reg & 1) {
ofs += offsetof(CPU_DoubleU, l.upper);
} else {
ofs += offsetof(CPU_DoubleU, l.lower);
}
return ofs;
return neon_element_offset(reg >> 1, reg & 1, MO_32);
}
}