diff options
Diffstat (limited to 'arch/arm64/include/asm/fpsimdmacros.h')
| -rw-r--r-- | arch/arm64/include/asm/fpsimdmacros.h | 48 |
1 files changed, 38 insertions, 10 deletions
diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h index 636e9d9c7929..af43367534c7 100644 --- a/arch/arm64/include/asm/fpsimdmacros.h +++ b/arch/arm64/include/asm/fpsimdmacros.h @@ -164,25 +164,59 @@ | ((\np) << 5) .endm +/* PFALSE P\np.B */ +.macro _sve_pfalse np + _sve_check_preg \np + .inst 0x2518e400 \ + | (\np) +.endm + .macro __for from:req, to:req .if (\from) == (\to) - _for__body \from + _for__body %\from .else - __for \from, (\from) + ((\to) - (\from)) / 2 - __for (\from) + ((\to) - (\from)) / 2 + 1, \to + __for %\from, %((\from) + ((\to) - (\from)) / 2) + __for %((\from) + ((\to) - (\from)) / 2 + 1), %\to .endif .endm .macro _for var:req, from:req, to:req, insn:vararg .macro _for__body \var:req + .noaltmacro \insn + .altmacro .endm + .altmacro __for \from, \to + .noaltmacro .purgem _for__body .endm +/* Update ZCR_EL1.LEN with the new VQ */ +.macro sve_load_vq xvqminus1, xtmp, xtmp2 + mrs_s \xtmp, SYS_ZCR_EL1 + bic \xtmp2, \xtmp, ZCR_ELx_LEN_MASK + orr \xtmp2, \xtmp2, \xvqminus1 + cmp \xtmp2, \xtmp + b.eq 921f + msr_s SYS_ZCR_EL1, \xtmp2 //self-synchronising +921: +.endm + +/* Preserve the first 128-bits of Znz and zero the rest. */ +.macro _sve_flush_z nz + _sve_check_zreg \nz + mov v\nz\().16b, v\nz\().16b +.endm + +.macro sve_flush + _for n, 0, 31, _sve_flush_z \n + _for n, 0, 15, _sve_pfalse \n + _sve_wrffr 0 +.endm + .macro sve_save nxbase, xpfpsr, nxtmp _for n, 0, 31, _sve_str_v \n, \nxbase, \n - 34 _for n, 0, 15, _sve_str_p \n, \nxbase, \n - 16 @@ -197,13 +231,7 @@ .endm .macro sve_load nxbase, xpfpsr, xvqminus1, nxtmp, xtmp2 - mrs_s x\nxtmp, SYS_ZCR_EL1 - bic \xtmp2, x\nxtmp, ZCR_ELx_LEN_MASK - orr \xtmp2, \xtmp2, \xvqminus1 - cmp \xtmp2, x\nxtmp - b.eq 921f - msr_s SYS_ZCR_EL1, \xtmp2 // self-synchronising -921: + sve_load_vq \xvqminus1, x\nxtmp, \xtmp2 _for n, 0, 31, _sve_ldr_v \n, \nxbase, \n - 34 _sve_ldr_p 0, \nxbase _sve_wrffr 0 |