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Message-ID: <CAKwvOd=w0=i2GPiBaXHizaMP=b0VD9Lw_o+GuvvWp-brMx2fRw@mail.gmail.com>
Date: Tue, 14 Sep 2021 09:24:54 -0700
From: Nick Desaulniers <ndesaulniers@...gle.com>
To: Paul Cercueil <paul@...pouillou.net>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Huacai Chen <chenhuacai@...nel.org>,
Jiaxun Yang <jiaxun.yang@...goat.com>,
Tiezhu Yang <yangtiezhu@...ngson.cn>,
linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
list@...ndingux.net, clang-built-linux@...glegroups.com
Subject: Re: [PATCH v2] MIPS: Avoid macro redefinitions
On Tue, Sep 14, 2021 at 9:18 AM Paul Cercueil <paul@...pouillou.net> wrote:
>
> Hi Nick,
>
> Le mar., sept. 14 2021 at 08:56:59 -0700, Nick Desaulniers
> <ndesaulniers@...gle.com> a écrit :
> > On Mon, Sep 13, 2021 at 2:34 PM Paul Cercueil <paul@...pouillou.net>
> > wrote:
> >>
> >> To be able to compile the kernel with LTO, the assembler macros
> >> cannot
> >> be declared in the global scope, or the compiler will complain about
> >> redefined macros.
> >>
> >> Update the code so that macros are defined then undefined when they
> >> are
> >> used.
> >>
> >> Note that virt support was added in 2.24 and xpa in 2.25. So we
> >> still
> >> need the TOOLCHAIN defines for them.
> >>
> >> Signed-off-by: Paul Cercueil <paul@...pouillou.net>
> >> ---
> >>
> >> Notes:
> >> v2: Removed commented undef line
> >
> > Hi Paul, thanks for the v2. I think the point of the #undef was that
> > the _IFC_REG doesn't make sense outside of this header, so they
> > probably did not want to pollute the namespace for preprocessor
> > defines. As such, I think it should actually stay, not be removed (or
> > commented out).
>
> I can test it again later, but IIRC the #undef must be removed. Since
> we use the new _ASM_SET_PARSE_R macro, which uses _IFC_REG, if we
> #undef it early then it won't compile.
Ok, it's not a big deal anyways.
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
>
> Cheers,
> -Paul
>
> >>
> >> arch/mips/include/asm/ginvt.h | 11 +-
> >> .../asm/mach-loongson64/loongson_regs.h | 12 ++
> >> arch/mips/include/asm/mipsregs.h | 190
> >> +++++++++++-------
> >> arch/mips/include/asm/msa.h | 34 +++-
> >> 4 files changed, 155 insertions(+), 92 deletions(-)
> >>
> >> diff --git a/arch/mips/include/asm/ginvt.h
> >> b/arch/mips/include/asm/ginvt.h
> >> index 6eb7c2b94dc7..87b2974ffc53 100644
> >> --- a/arch/mips/include/asm/ginvt.h
> >> +++ b/arch/mips/include/asm/ginvt.h
> >> @@ -12,11 +12,13 @@ enum ginvt_type {
> >>
> >> #ifdef TOOLCHAIN_SUPPORTS_GINV
> >> # define _ASM_SET_GINV ".set ginv\n"
> >> +# define _ASM_UNSET_GINV
> >> #else
> >> -_ASM_MACRO_1R1I(ginvt, rs, type,
> >> - _ASM_INSN_IF_MIPS(0x7c0000bd | (__rs << 21) |
> >> (\\type << 8))
> >> - _ASM_INSN32_IF_MM(0x0000717c | (__rs << 16) |
> >> (\\type << 9)));
> >> -# define _ASM_SET_GINV
> >> +# define _ASM_SET_GINV
> >> \
> >> + _ASM_MACRO_1R1I(ginvt, rs, type,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x7c0000bd | (__rs << 21)
> >> | (\\type << 8)) \
> >> + _ASM_INSN32_IF_MM(0x0000717c | (__rs << 16)
> >> | (\\type << 9)))
> >> +# define _ASM_UNSET_GINV ".purgem ginvt\n"
> >> #endif
> >>
> >> static __always_inline void ginvt(unsigned long addr, enum
> >> ginvt_type type)
> >> @@ -25,6 +27,7 @@ static __always_inline void ginvt(unsigned long
> >> addr, enum ginvt_type type)
> >> ".set push\n"
> >> _ASM_SET_GINV
> >> " ginvt %0, %1\n"
> >> + _ASM_UNSET_GINV
> >> ".set pop"
> >> : /* no outputs */
> >> : "r"(addr), "i"(type)
> >> diff --git a/arch/mips/include/asm/mach-loongson64/loongson_regs.h
> >> b/arch/mips/include/asm/mach-loongson64/loongson_regs.h
> >> index 165993514762..b5be7511f6cd 100644
> >> --- a/arch/mips/include/asm/mach-loongson64/loongson_regs.h
> >> +++ b/arch/mips/include/asm/mach-loongson64/loongson_regs.h
> >> @@ -21,8 +21,10 @@ static inline u32 read_cpucfg(u32 reg)
> >> u32 __res;
> >>
> >> __asm__ __volatile__(
> >> + _ASM_SET_PARSE_R
> >> "parse_r __res,%0\n\t"
> >> "parse_r reg,%1\n\t"
> >> + _ASM_UNSET_PARSE_R
> >> ".insn \n\t"
> >> ".word (0xc8080118 | (reg << 21) | (__res <<
> >> 11))\n\t"
> >> :"=r"(__res)
> >> @@ -143,8 +145,10 @@ static inline u32 csr_readl(u32 reg)
> >>
> >> /* RDCSR reg, val */
> >> __asm__ __volatile__(
> >> + _ASM_SET_PARSE_R
> >> "parse_r __res,%0\n\t"
> >> "parse_r reg,%1\n\t"
> >> + _ASM_UNSET_PARSE_R
> >> ".insn \n\t"
> >> ".word (0xc8000118 | (reg << 21) | (__res <<
> >> 11))\n\t"
> >> :"=r"(__res)
> >> @@ -160,8 +164,10 @@ static inline u64 csr_readq(u32 reg)
> >>
> >> /* DRDCSR reg, val */
> >> __asm__ __volatile__(
> >> + _ASM_SET_PARSE_R
> >> "parse_r __res,%0\n\t"
> >> "parse_r reg,%1\n\t"
> >> + _ASM_UNSET_PARSE_R
> >> ".insn \n\t"
> >> ".word (0xc8020118 | (reg << 21) | (__res <<
> >> 11))\n\t"
> >> :"=r"(__res)
> >> @@ -175,8 +181,10 @@ static inline void csr_writel(u32 val, u32 reg)
> >> {
> >> /* WRCSR reg, val */
> >> __asm__ __volatile__(
> >> + _ASM_SET_PARSE_R
> >> "parse_r reg,%0\n\t"
> >> "parse_r val,%1\n\t"
> >> + _ASM_UNSET_PARSE_R
> >> ".insn \n\t"
> >> ".word (0xc8010118 | (reg << 21) | (val << 11))\n\t"
> >> :
> >> @@ -189,8 +197,10 @@ static inline void csr_writeq(u64 val, u32 reg)
> >> {
> >> /* DWRCSR reg, val */
> >> __asm__ __volatile__(
> >> + _ASM_SET_PARSE_R
> >> "parse_r reg,%0\n\t"
> >> "parse_r val,%1\n\t"
> >> + _ASM_UNSET_PARSE_R
> >> ".insn \n\t"
> >> ".word (0xc8030118 | (reg << 21) | (val << 11))\n\t"
> >> :
> >> @@ -243,8 +253,10 @@ static inline u64 drdtime(void)
> >> u64 val = 0;
> >>
> >> __asm__ __volatile__(
> >> + _ASM_SET_PARSE_R
> >> "parse_r rID,%0\n\t"
> >> "parse_r val,%1\n\t"
> >> + _ASM_UNSET_PARSE_R
> >> ".insn \n\t"
> >> ".word (0xc8090118 | (rID << 21) | (val << 11))\n\t"
> >> :"=r"(rID),"=r"(val)
> >> diff --git a/arch/mips/include/asm/mipsregs.h
> >> b/arch/mips/include/asm/mipsregs.h
> >> index acdf8c69220b..2616353b940c 100644
> >> --- a/arch/mips/include/asm/mipsregs.h
> >> +++ b/arch/mips/include/asm/mipsregs.h
> >> @@ -1297,22 +1297,22 @@ static inline int mm_insn_16bit(u16 insn)
> >> "\\var = " #n "\n\t" \
> >> ".endif\n\t"
> >>
> >> -__asm__(".macro parse_r var r\n\t"
> >> - "\\var = -1\n\t"
> >> - _IFC_REG(0) _IFC_REG(1) _IFC_REG(2) _IFC_REG(3)
> >> - _IFC_REG(4) _IFC_REG(5) _IFC_REG(6) _IFC_REG(7)
> >> - _IFC_REG(8) _IFC_REG(9) _IFC_REG(10) _IFC_REG(11)
> >> - _IFC_REG(12) _IFC_REG(13) _IFC_REG(14) _IFC_REG(15)
> >> - _IFC_REG(16) _IFC_REG(17) _IFC_REG(18) _IFC_REG(19)
> >> - _IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23)
> >> - _IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27)
> >> - _IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31)
> >> - ".iflt \\var\n\t"
> >> - ".error \"Unable to parse register name \\r\"\n\t"
> >> - ".endif\n\t"
> >> - ".endm");
> >> -
> >> -#undef _IFC_REG
> >
> > ^ ie. I don't think we want to remove this undef.
> >
> >> +#define _ASM_SET_PARSE_R
> >> \
> >> + ".macro parse_r var r\n\t"
> >> \
> >> + "\\var = -1\n\t"
> >> \
> >> + _IFC_REG(0) _IFC_REG(1) _IFC_REG(2) _IFC_REG(3)
> >> \
> >> + _IFC_REG(4) _IFC_REG(5) _IFC_REG(6) _IFC_REG(7)
> >> \
> >> + _IFC_REG(8) _IFC_REG(9) _IFC_REG(10) _IFC_REG(11)
> >> \
> >> + _IFC_REG(12) _IFC_REG(13) _IFC_REG(14) _IFC_REG(15)
> >> \
> >> + _IFC_REG(16) _IFC_REG(17) _IFC_REG(18) _IFC_REG(19)
> >> \
> >> + _IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23)
> >> \
> >> + _IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27)
> >> \
> >> + _IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31)
> >> \
> >> + ".iflt \\var\n\t"
> >> \
> >> + ".error \"Unable to parse register name \\r\"\n\t"
> >> \
> >> + ".endif\n\t"
> >> \
> >> + ".endm\n\t"
> >> +#define _ASM_UNSET_PARSE_R ".purgem parse_r\n\t"
> >>
> >> /*
> >> * C macros for generating assembler macros for common instruction
> >> formats.
> >> @@ -1322,43 +1322,45 @@ __asm__(".macro parse_r var r\n\t"
> >> * the ENC encodings.
> >> */
> >>
> >> -/* Instructions with no operands */
> >> -#define _ASM_MACRO_0(OP, ENC)
> >> \
> >> - __asm__(".macro " #OP "\n\t"
> >> \
> >> - ENC
> >> \
> >> - ".endm")
> >> -
> >> /* Instructions with 1 register operand & 1 immediate operand */
> >> #define _ASM_MACRO_1R1I(OP, R1, I2, ENC)
> >> \
> >> - __asm__(".macro " #OP " " #R1 ", " #I2 "\n\t"
> >> \
> >> + ".macro " #OP " " #R1 ", " #I2 "\n\t"
> >> \
> >> + _ASM_SET_PARSE_R
> >> \
> >> "parse_r __" #R1 ", \\" #R1 "\n\t"
> >> \
> >> ENC
> >> \
> >> - ".endm")
> >> + _ASM_UNSET_PARSE_R
> >> \
> >> + ".endm\n\t"
> >>
> >> /* Instructions with 2 register operands */
> >> #define _ASM_MACRO_2R(OP, R1, R2, ENC)
> >> \
> >> - __asm__(".macro " #OP " " #R1 ", " #R2 "\n\t"
> >> \
> >> + ".macro " #OP " " #R1 ", " #R2 "\n\t"
> >> \
> >> + _ASM_SET_PARSE_R
> >> \
> >> "parse_r __" #R1 ", \\" #R1 "\n\t"
> >> \
> >> "parse_r __" #R2 ", \\" #R2 "\n\t"
> >> \
> >> ENC
> >> \
> >> - ".endm")
> >> + _ASM_UNSET_PARSE_R
> >> \
> >> + ".endm\n\t"
> >>
> >> /* Instructions with 3 register operands */
> >> #define _ASM_MACRO_3R(OP, R1, R2, R3, ENC)
> >> \
> >> - __asm__(".macro " #OP " " #R1 ", " #R2 ", " #R3 "\n\t"
> >> \
> >> + ".macro " #OP " " #R1 ", " #R2 ", " #R3 "\n\t"
> >> \
> >> + _ASM_SET_PARSE_R
> >> \
> >> "parse_r __" #R1 ", \\" #R1 "\n\t"
> >> \
> >> "parse_r __" #R2 ", \\" #R2 "\n\t"
> >> \
> >> "parse_r __" #R3 ", \\" #R3 "\n\t"
> >> \
> >> ENC
> >> \
> >> - ".endm")
> >> + _ASM_UNSET_PARSE_R
> >> \
> >> + ".endm\n\t"
> >>
> >> /* Instructions with 2 register operands and 1 optional select
> >> operand */
> >> #define _ASM_MACRO_2R_1S(OP, R1, R2, SEL3, ENC)
> >> \
> >> - __asm__(".macro " #OP " " #R1 ", " #R2 ", " #SEL3 " =
> >> 0\n\t" \
> >> + ".macro " #OP " " #R1 ", " #R2 ", " #SEL3 " =
> >> 0\n\t" \
> >> + _ASM_SET_PARSE_R
> >> \
> >> "parse_r __" #R1 ", \\" #R1 "\n\t"
> >> \
> >> "parse_r __" #R2 ", \\" #R2 "\n\t"
> >> \
> >> ENC
> >> \
> >> - ".endm")
> >> + _ASM_UNSET_PARSE_R
> >> \
> >> + ".endm\n\t"
> >>
> >> /*
> >> * TLB Invalidate Flush
> >> @@ -1618,15 +1620,21 @@ do {
> >> \
> >> } while (0)
> >>
> >> #ifndef TOOLCHAIN_SUPPORTS_XPA
> >> -_ASM_MACRO_2R_1S(mfhc0, rt, rs, sel,
> >> - _ASM_INSN_IF_MIPS(0x40400000 | __rt << 16 | __rs << 11 |
> >> \\sel)
> >> - _ASM_INSN32_IF_MM(0x000000f4 | __rt << 21 | __rs << 16 |
> >> \\sel << 11));
> >> -_ASM_MACRO_2R_1S(mthc0, rt, rd, sel,
> >> - _ASM_INSN_IF_MIPS(0x40c00000 | __rt << 16 | __rd << 11 |
> >> \\sel)
> >> - _ASM_INSN32_IF_MM(0x000002f4 | __rt << 21 | __rd << 16 |
> >> \\sel << 11));
> >> -#define _ASM_SET_XPA ""
> >> +#define _ASM_SET_MFHC0
> >> \
> >> + _ASM_MACRO_2R_1S(mfhc0, rt, rs, sel,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x40400000 | __rt << 16
> >> | __rs << 11 | \\sel) \
> >> + _ASM_INSN32_IF_MM(0x000000f4 | __rt << 21
> >> | __rs << 16 | \\sel << 11))
> >> +#define _ASM_UNSET_MFHC0 ".purgem mfhc0\n\t"
> >> +#define _ASM_SET_MTHC0
> >> \
> >> + _ASM_MACRO_2R_1S(mthc0, rt, rd, sel,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x40c00000 | __rt << 16
> >> | __rd << 11 | \\sel) \
> >> + _ASM_INSN32_IF_MM(0x000002f4 | __rt << 21
> >> | __rd << 16 | \\sel << 11))
> >> +#define _ASM_UNSET_MTHC0 ".purgem mthc0\n\t"
> >> #else /* !TOOLCHAIN_SUPPORTS_XPA */
> >> -#define _ASM_SET_XPA ".set\txpa\n\t"
> >> +#define _ASM_SET_MFHC0 ".set\txpa\n\t"
> >> +#define _ASM_SET_MTHC0 ".set\txpa\n\t"
> >> +#define _ASM_UNSET_MFHC0
> >> +#define _ASM_UNSET_MTHC0
> >> #endif
> >>
> >> #define __readx_32bit_c0_register(source, sel)
> >> \
> >> @@ -1636,8 +1644,9 @@ _ASM_MACRO_2R_1S(mthc0, rt, rd, sel,
> >> __asm__ __volatile__(
> >> \
> >> " .set push \n"
> >> \
> >> " .set mips32r2 \n"
> >> \
> >> - _ASM_SET_XPA
> >> \
> >> + _ASM_SET_MFHC0
> >> \
> >> " mfhc0 %0, " #source ", %1 \n"
> >> \
> >> + _ASM_UNSET_MFHC0
> >> \
> >> " .set pop \n"
> >> \
> >> : "=r" (__res)
> >> \
> >> : "i" (sel));
> >> \
> >> @@ -1649,8 +1658,9 @@ do {
> >> \
> >> __asm__ __volatile__(
> >> \
> >> " .set push \n"
> >> \
> >> " .set mips32r2 \n"
> >> \
> >> - _ASM_SET_XPA
> >> \
> >> + _ASM_SET_MTHC0
> >> \
> >> " mthc0 %z0, " #register ", %1 \n"
> >> \
> >> + _ASM_UNSET_MTHC0
> >> \
> >> " .set pop \n"
> >> \
> >> :
> >> \
> >> : "Jr" (value), "i" (sel));
> >> \
> >> @@ -2046,31 +2056,58 @@ do {
> >> \
> >> */
> >>
> >> #ifndef TOOLCHAIN_SUPPORTS_VIRT
> >> -_ASM_MACRO_2R_1S(mfgc0, rt, rs, sel,
> >> - _ASM_INSN_IF_MIPS(0x40600000 | __rt << 16 | __rs << 11 |
> >> \\sel)
> >> - _ASM_INSN32_IF_MM(0x000004fc | __rt << 21 | __rs << 16 |
> >> \\sel << 11));
> >> -_ASM_MACRO_2R_1S(dmfgc0, rt, rs, sel,
> >> - _ASM_INSN_IF_MIPS(0x40600100 | __rt << 16 | __rs << 11 |
> >> \\sel)
> >> - _ASM_INSN32_IF_MM(0x580004fc | __rt << 21 | __rs << 16 |
> >> \\sel << 11));
> >> -_ASM_MACRO_2R_1S(mtgc0, rt, rd, sel,
> >> - _ASM_INSN_IF_MIPS(0x40600200 | __rt << 16 | __rd << 11 |
> >> \\sel)
> >> - _ASM_INSN32_IF_MM(0x000006fc | __rt << 21 | __rd << 16 |
> >> \\sel << 11));
> >> -_ASM_MACRO_2R_1S(dmtgc0, rt, rd, sel,
> >> - _ASM_INSN_IF_MIPS(0x40600300 | __rt << 16 | __rd << 11 |
> >> \\sel)
> >> - _ASM_INSN32_IF_MM(0x580006fc | __rt << 21 | __rd << 16 |
> >> \\sel << 11));
> >> -_ASM_MACRO_0(tlbgp, _ASM_INSN_IF_MIPS(0x42000010)
> >> - _ASM_INSN32_IF_MM(0x0000017c));
> >> -_ASM_MACRO_0(tlbgr, _ASM_INSN_IF_MIPS(0x42000009)
> >> - _ASM_INSN32_IF_MM(0x0000117c));
> >> -_ASM_MACRO_0(tlbgwi, _ASM_INSN_IF_MIPS(0x4200000a)
> >> - _ASM_INSN32_IF_MM(0x0000217c));
> >> -_ASM_MACRO_0(tlbgwr, _ASM_INSN_IF_MIPS(0x4200000e)
> >> - _ASM_INSN32_IF_MM(0x0000317c));
> >> -_ASM_MACRO_0(tlbginvf, _ASM_INSN_IF_MIPS(0x4200000c)
> >> - _ASM_INSN32_IF_MM(0x0000517c));
> >> -#define _ASM_SET_VIRT ""
> >> +#define _ASM_SET_MFGC0
> >> \
> >> + _ASM_MACRO_2R_1S(mfgc0, rt, rs, sel,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x40600000 | __rt << 16
> >> | __rs << 11 | \\sel) \
> >> + _ASM_INSN32_IF_MM(0x000004fc | __rt << 21
> >> | __rs << 16 | \\sel << 11))
> >> +#define _ASM_UNSET_MFGC0 ".purgem mfgc0\n\t"
> >> +#define _ASM_SET_DMFGC0
> >> \
> >> + _ASM_MACRO_2R_1S(dmfgc0, rt, rs, sel,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x40600100 | __rt << 16
> >> | __rs << 11 | \\sel) \
> >> + _ASM_INSN32_IF_MM(0x580004fc | __rt << 21
> >> | __rs << 16 | \\sel << 11))
> >> +#define _ASM_UNSET_DMFGC0 ".purgem dmfgc0\n\t"
> >> +#define _ASM_SET_MTGC0
> >> \
> >> + _ASM_MACRO_2R_1S(mtgc0, rt, rd, sel,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x40600200 | __rt << 16
> >> | __rd << 11 | \\sel) \
> >> + _ASM_INSN32_IF_MM(0x000006fc | __rt << 21
> >> | __rd << 16 | \\sel << 11))
> >> +#define _ASM_UNSET_MTGC0 ".purgem mtgc0\n\t"
> >> +#define _ASM_SET_DMTGC0
> >> \
> >> + _ASM_MACRO_2R_1S(dmtgc0, rt, rd, sel,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x40600300 | __rt << 16
> >> | __rd << 11 | \\sel) \
> >> + _ASM_INSN32_IF_MM(0x580006fc | __rt << 21
> >> | __rd << 16 | \\sel << 11))
> >> +#define _ASM_UNSET_DMTGC0 ".purgem dmtgc0\n\t"
> >> +
> >> +#define __tlbgp()
> >> \
> >> + _ASM_INSN_IF_MIPS(0x42000010)
> >> \
> >> + _ASM_INSN32_IF_MM(0x0000017c)
> >> +#define __tlbgr()
> >> \
> >> + _ASM_INSN_IF_MIPS(0x42000009)
> >> \
> >> + _ASM_INSN32_IF_MM(0x0000117c)
> >> +#define __tlbgwi()
> >> \
> >> + _ASM_INSN_IF_MIPS(0x4200000a)
> >> \
> >> + _ASM_INSN32_IF_MM(0x0000217c)
> >> +#define __tlbgwr()
> >> \
> >> + _ASM_INSN_IF_MIPS(0x4200000e)
> >> \
> >> + _ASM_INSN32_IF_MM(0x0000317c)
> >> +#define __tlbginvf()
> >> \
> >> + _ASM_INSN_IF_MIPS(0x4200000c)
> >> \
> >> + _ASM_INSN32_IF_MM(0x0000517c)
> >> #else /* !TOOLCHAIN_SUPPORTS_VIRT */
> >> #define _ASM_SET_VIRT ".set\tvirt\n\t"
> >> +#define _ASM_SET_MFGC0 _ASM_SET_VIRT
> >> +#define _ASM_SET_DMFGC0 _ASM_SET_VIRT
> >> +#define _ASM_SET_MTGC0 _ASM_SET_VIRT
> >> +#define _ASM_SET_DMTGC0 _ASM_SET_VIRT
> >> +#define _ASM_UNSET_MFGC0
> >> +#define _ASM_UNSET_DMFGC0
> >> +#define _ASM_UNSET_MTGC0
> >> +#define _ASM_UNSET_DMTGC0
> >> +
> >> +#define __tlbgp() _ASM_SET_VIRT "tlbgp\n\t"
> >> +#define __tlbgr() _ASM_SET_VIRT "tlbgr\n\t"
> >> +#define __tlbgwi() _ASM_SET_VIRT "tlbgwi\n\t"
> >> +#define __tlbgwr() _ASM_SET_VIRT "tlbgwr\n\t"
> >> +#define __tlbginvf() _ASM_SET_VIRT "tlbginvf\n\t"
> >> #endif
> >>
> >> #define __read_32bit_gc0_register(source, sel)
> >> \
> >> @@ -2078,8 +2115,9 @@ _ASM_MACRO_0(tlbginvf,
> >> _ASM_INSN_IF_MIPS(0x4200000c)
> >> __asm__ __volatile__(
> >> \
> >> ".set\tpush\n\t"
> >> \
> >> ".set\tmips32r5\n\t"
> >> \
> >> - _ASM_SET_VIRT
> >> \
> >> + _ASM_SET_MFGC0
> >> \
> >> "mfgc0\t%0, " #source ", %1\n\t"
> >> \
> >> + _ASM_UNSET_MFGC0
> >> \
> >> ".set\tpop"
> >> \
> >> : "=r" (__res)
> >> \
> >> : "i" (sel));
> >> \
> >> @@ -2091,8 +2129,9 @@ _ASM_MACRO_0(tlbginvf,
> >> _ASM_INSN_IF_MIPS(0x4200000c)
> >> __asm__ __volatile__(
> >> \
> >> ".set\tpush\n\t"
> >> \
> >> ".set\tmips64r5\n\t"
> >> \
> >> - _ASM_SET_VIRT
> >> \
> >> + _ASM_SET_DMFGC0
> >> \
> >> "dmfgc0\t%0, " #source ", %1\n\t"
> >> \
> >> + _ASM_UNSET_DMFGC0
> >> \
> >> ".set\tpop"
> >> \
> >> : "=r" (__res)
> >> \
> >> : "i" (sel));
> >> \
> >> @@ -2104,8 +2143,9 @@ do {
> >> \
> >> __asm__ __volatile__(
> >> \
> >> ".set\tpush\n\t"
> >> \
> >> ".set\tmips32r5\n\t"
> >> \
> >> - _ASM_SET_VIRT
> >> \
> >> + _ASM_SET_MTGC0
> >> \
> >> "mtgc0\t%z0, " #register ", %1\n\t"
> >> \
> >> + _ASM_UNSET_MTGC0
> >> \
> >> ".set\tpop"
> >> \
> >> : : "Jr" ((unsigned int)(value)),
> >> \
> >> "i" (sel));
> >> \
> >> @@ -2116,8 +2156,9 @@ do {
> >> \
> >> __asm__ __volatile__(
> >> \
> >> ".set\tpush\n\t"
> >> \
> >> ".set\tmips64r5\n\t"
> >> \
> >> - _ASM_SET_VIRT
> >> \
> >> + _ASM_SET_DMTGC0
> >> \
> >> "dmtgc0\t%z0, " #register ", %1\n\t"
> >> \
> >> + _ASM_UNSET_DMTGC0
> >> \
> >> ".set\tpop"
> >> \
> >> : : "Jr" (value),
> >> \
> >> "i" (sel));
> >> \
> >> @@ -2788,8 +2829,7 @@ static inline void guest_tlb_probe(void)
> >> __asm__ __volatile__(
> >> ".set push\n\t"
> >> ".set noreorder\n\t"
> >> - _ASM_SET_VIRT
> >> - "tlbgp\n\t"
> >> + __tlbgp()
> >> ".set pop");
> >> }
> >>
> >> @@ -2798,8 +2838,7 @@ static inline void guest_tlb_read(void)
> >> __asm__ __volatile__(
> >> ".set push\n\t"
> >> ".set noreorder\n\t"
> >> - _ASM_SET_VIRT
> >> - "tlbgr\n\t"
> >> + __tlbgr()
> >> ".set pop");
> >> }
> >>
> >> @@ -2808,8 +2847,7 @@ static inline void
> >> guest_tlb_write_indexed(void)
> >> __asm__ __volatile__(
> >> ".set push\n\t"
> >> ".set noreorder\n\t"
> >> - _ASM_SET_VIRT
> >> - "tlbgwi\n\t"
> >> + __tlbgwi()
> >> ".set pop");
> >> }
> >>
> >> @@ -2818,8 +2856,7 @@ static inline void
> >> guest_tlb_write_random(void)
> >> __asm__ __volatile__(
> >> ".set push\n\t"
> >> ".set noreorder\n\t"
> >> - _ASM_SET_VIRT
> >> - "tlbgwr\n\t"
> >> + __tlbgwr()
> >> ".set pop");
> >> }
> >>
> >> @@ -2831,8 +2868,7 @@ static inline void guest_tlbinvf(void)
> >> __asm__ __volatile__(
> >> ".set push\n\t"
> >> ".set noreorder\n\t"
> >> - _ASM_SET_VIRT
> >> - "tlbginvf\n\t"
> >> + __tlbginvf()
> >> ".set pop");
> >> }
> >>
> >> diff --git a/arch/mips/include/asm/msa.h
> >> b/arch/mips/include/asm/msa.h
> >> index e0a3dd52334d..236a49ee2e3e 100644
> >> --- a/arch/mips/include/asm/msa.h
> >> +++ b/arch/mips/include/asm/msa.h
> >> @@ -162,16 +162,26 @@ static inline void init_msa_upper(void)
> >> * to allow compilation with toolchains that do not support MSA.
> >> Once all
> >> * toolchains in use support MSA these can be removed.
> >> */
> >> -_ASM_MACRO_2R(cfcmsa, rd, cs,
> >> - _ASM_INSN_IF_MIPS(0x787e0019 | __cs << 11 | __rd << 6)
> >> - _ASM_INSN32_IF_MM(0x587e0016 | __cs << 11 | __rd << 6));
> >> -_ASM_MACRO_2R(ctcmsa, cd, rs,
> >> - _ASM_INSN_IF_MIPS(0x783e0019 | __rs << 11 | __cd << 6)
> >> - _ASM_INSN32_IF_MM(0x583e0016 | __rs << 11 | __cd << 6));
> >> -#define _ASM_SET_MSA ""
> >> +
> >> +#define _ASM_SET_CFCMSA
> >> \
> >> + _ASM_MACRO_2R(cfcmsa, rd, cs,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x787e0019 | __cs << 11 |
> >> __rd << 6) \
> >> + _ASM_INSN32_IF_MM(0x587e0016 | __cs << 11 |
> >> __rd << 6))
> >> +#define _ASM_UNSET_CFCMSA ".purgem cfcmsa\n\t"
> >> +#define _ASM_SET_CTCMSA
> >> \
> >> + _ASM_MACRO_2R(ctcmsa, cd, rs,
> >> \
> >> + _ASM_INSN_IF_MIPS(0x783e0019 | __rs << 11 |
> >> __cd << 6) \
> >> + _ASM_INSN32_IF_MM(0x583e0016 | __rs << 11 |
> >> __cd << 6))
> >> +#define _ASM_UNSET_CTCMSA ".purgem ctcmsa\n\t"
> >> #else /* TOOLCHAIN_SUPPORTS_MSA */
> >> -#define _ASM_SET_MSA ".set\tfp=64\n\t" \
> >> - ".set\tmsa\n\t"
> >> +#define _ASM_SET_CFCMSA
> >> \
> >> + ".set\tfp=64\n\t" \
> >> + ".set\tmsa\n\t"
> >> +#define _ASM_UNSET_CFCMSA
> >> +#define _ASM_SET_CTCMSA
> >> \
> >> + ".set\tfp=64\n\t" \
> >> + ".set\tmsa\n\t"
> >> +#define _ASM_UNSET_CTCMSA
> >> #endif
> >>
> >> #define __BUILD_MSA_CTL_REG(name, cs) \
> >> @@ -180,8 +190,9 @@ static inline unsigned int
> >> read_msa_##name(void) \
> >> unsigned int reg; \
> >> __asm__ __volatile__( \
> >> " .set push\n" \
> >> - _ASM_SET_MSA \
> >> + _ASM_SET_CFCMSA \
> >> " cfcmsa %0, $" #cs "\n" \
> >> + _ASM_UNSET_CFCMSA \
> >> " .set pop\n" \
> >> : "=r"(reg)); \
> >> return reg; \
> >> @@ -191,8 +202,9 @@ static inline void write_msa_##name(unsigned
> >> int val) \
> >> { \
> >> __asm__ __volatile__( \
> >> " .set push\n" \
> >> - _ASM_SET_MSA \
> >> + _ASM_SET_CTCMSA \
> >> " ctcmsa $" #cs ", %0\n" \
> >> + _ASM_UNSET_CTCMSA \
> >> " .set pop\n" \
> >> : : "r"(val)); \
> >> }
> >> --
> >> 2.33.0
> >>
> >
> >
> > --
> > Thanks,
> > ~Nick Desaulniers
>
>
--
Thanks,
~Nick Desaulniers
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