diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2014-01-27 15:23:09 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:10 +0100 |
| commit | 7f65afb97f279d9d02d0779384e8bd5ace064dea (patch) | |
| tree | dc478d16bb3d470e5dcd4b167c969656ac7a874e /arch/mips/include/asm/asmmacro.h | |
| parent | 02987633df7ba2f62967791dda816eb191d1add3 (diff) | |
MIPS: Add MSA register definitions & access
This patch introduces definitions for the MSA control registers and
functions which allow access to both the control & vector registers. If
the toolchain being used to build the kernel includes support for MSA
then this patch will make use of that support & use MSA instructions
directly. However toolchain support for MSA is very new & far from a
point where it can be reasonably expected that everyone building the
kernel uses a toolchain with support. Thus fallbacks using .word
assembler directives are also provided for now as a temporary measure.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6429/
Patchwork: https://patchwork.linux-mips.org/patch/6607/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/asmmacro.h')
| -rw-r--r-- | arch/mips/include/asm/asmmacro.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h index 63cf43472814..f571db371b3e 100644 --- a/arch/mips/include/asm/asmmacro.h +++ b/arch/mips/include/asm/asmmacro.h @@ -207,4 +207,125 @@ .word 0x41800000 | (\rt << 16) | (\rd << 11) | (\u << 5) | (\sel) .endm +#ifdef TOOLCHAIN_SUPPORTS_MSA + .macro ld_d wd, off, base + .set push + .set mips32r2 + .set msa + ld.d $w\wd, \off(\base) + .set pop + .endm + + .macro st_d wd, off, base + .set push + .set mips32r2 + .set msa + st.d $w\wd, \off(\base) + .set pop + .endm + + .macro copy_u_w rd, ws, n + .set push + .set mips32r2 + .set msa + copy_u.w \rd, $w\ws[\n] + .set pop + .endm + + .macro copy_u_d rd, ws, n + .set push + .set mips64r2 + .set msa + copy_u.d \rd, $w\ws[\n] + .set pop + .endm + + .macro insert_w wd, n, rs + .set push + .set mips32r2 + .set msa + insert.w $w\wd[\n], \rs + .set pop + .endm + + .macro insert_d wd, n, rs + .set push + .set mips64r2 + .set msa + insert.d $w\wd[\n], \rs + .set pop + .endm +#else + /* + * Temporary until all toolchains in use include MSA support. + */ + .macro cfcmsa rd, cs + .set push + .set noat + .word 0x787e0059 | (\cs << 11) + move \rd, $1 + .set pop + .endm + + .macro ctcmsa cd, rs + .set push + .set noat + move $1, \rs + .word 0x783e0819 | (\cd << 6) + .set pop + .endm + + .macro ld_d wd, off, base + .set push + .set noat + add $1, \base, \off + .word 0x78000823 | (\wd << 6) + .set pop + .endm + + .macro st_d wd, off, base + .set push + .set noat + add $1, \base, \off + .word 0x78000827 | (\wd << 6) + .set pop + .endm + + .macro copy_u_w rd, ws, n + .set push + .set noat + .word 0x78f00059 | (\n << 16) | (\ws << 11) + /* move triggers an assembler bug... */ + or \rd, $1, zero + .set pop + .endm + + .macro copy_u_d rd, ws, n + .set push + .set noat + .word 0x78f80059 | (\n << 16) | (\ws << 11) + /* move triggers an assembler bug... */ + or \rd, $1, zero + .set pop + .endm + + .macro insert_w wd, n, rs + .set push + .set noat + /* move triggers an assembler bug... */ + or $1, \rs, zero + .word 0x79300819 | (\n << 16) | (\wd << 6) + .set pop + .endm + + .macro insert_d wd, n, rs + .set push + .set noat + /* move triggers an assembler bug... */ + or $1, \rs, zero + .word 0x79380819 | (\n << 16) | (\wd << 6) + .set pop + .endm +#endif + #endif /* _ASM_ASMMACRO_H */ |