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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2021-07-23 13:53:43 +0800 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-07-28 23:31:48 +0200 |
| commit | a1cd62883f84072b7c9fa13e9a2512e13618399e (patch) | |
| tree | 36802d1e1235362484a4cef1fcd8ab141aae77ff | |
| parent | 1042039ccda7e9099f139b14981b48ee59900804 (diff) | |
| download | ffmpeg-a1cd62883f84072b7c9fa13e9a2512e13618399e.tar.gz | |
avutil/mips: Use $at as MMI macro temporary register
Some function had exceed 30 inline assembly register oprands limiation
when using LOONGSON2 version of MMI macros. We can avoid that by take
$at, which is register reserved for assembler, as temporary register.
As none of instructions used in these macros is pseudo, it is safe to
utilize $at here.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Shiyou Yin <yinshiyou-hf@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavutil/mips/mmiutils.h | 108 |
1 files changed, 66 insertions, 42 deletions
diff --git a/libavutil/mips/mmiutils.h b/libavutil/mips/mmiutils.h index 41715c6490..7991e14e84 100644 --- a/libavutil/mips/mmiutils.h +++ b/libavutil/mips/mmiutils.h @@ -29,74 +29,103 @@ #include "libavutil/mem_internal.h" #include "libavutil/mips/asmdefs.h" -#if HAVE_LOONGSON2 +/* + * These were used to define temporary registers for MMI marcos + * however now we're using $at. They're theoretically unnecessary + * but just leave them here to avoid mess. + */ +#define DECLARE_VAR_LOW32 +#define RESTRICT_ASM_LOW32 +#define DECLARE_VAR_ALL64 +#define RESTRICT_ASM_ALL64 +#define DECLARE_VAR_ADDRT +#define RESTRICT_ASM_ADDRT -#define DECLARE_VAR_LOW32 int32_t low32 -#define RESTRICT_ASM_LOW32 [low32]"=&r"(low32), -#define DECLARE_VAR_ALL64 int64_t all64 -#define RESTRICT_ASM_ALL64 [all64]"=&r"(all64), -#define DECLARE_VAR_ADDRT mips_reg addrt -#define RESTRICT_ASM_ADDRT [addrt]"=&r"(addrt), +#if HAVE_LOONGSON2 #define MMI_LWX(reg, addr, stride, bias) \ - PTR_ADDU "%[addrt], "#addr", "#stride" \n\t" \ - "lw "#reg", "#bias"(%[addrt]) \n\t" + ".set noat \n\t" \ + PTR_ADDU "$at, "#addr", "#stride" \n\t" \ + "lw "#reg", "#bias"($at) \n\t" \ + ".set at \n\t" #define MMI_SWX(reg, addr, stride, bias) \ - PTR_ADDU "%[addrt], "#addr", "#stride" \n\t" \ - "sw "#reg", "#bias"(%[addrt]) \n\t" + ".set noat \n\t" \ + PTR_ADDU "$at, "#addr", "#stride" \n\t" \ + "sw "#reg", "#bias"($at) \n\t" \ + ".set at \n\t" #define MMI_LDX(reg, addr, stride, bias) \ - PTR_ADDU "%[addrt], "#addr", "#stride" \n\t" \ - "ld "#reg", "#bias"(%[addrt]) \n\t" + ".set noat \n\t" \ + PTR_ADDU "$at, "#addr", "#stride" \n\t" \ + "ld "#reg", "#bias"($at) \n\t" \ + ".set at \n\t" #define MMI_SDX(reg, addr, stride, bias) \ - PTR_ADDU "%[addrt], "#addr", "#stride" \n\t" \ - "sd "#reg", "#bias"(%[addrt]) \n\t" + ".set noat \n\t" \ + PTR_ADDU "$at, "#addr", "#stride" \n\t" \ + "sd "#reg", "#bias"($at) \n\t" \ + ".set at \n\t" #define MMI_LWC1(fp, addr, bias) \ "lwc1 "#fp", "#bias"("#addr") \n\t" #define MMI_ULWC1(fp, addr, bias) \ - "ulw %[low32], "#bias"("#addr") \n\t" \ - "mtc1 %[low32], "#fp" \n\t" + ".set noat \n\t" \ + "ulw $at, "#bias"("#addr") \n\t" \ + "mtc1 $at, "#fp" \n\t" \ + ".set at \n\t" #define MMI_LWXC1(fp, addr, stride, bias) \ - PTR_ADDU "%[addrt], "#addr", "#stride" \n\t" \ - MMI_LWC1(fp, %[addrt], bias) + ".set noat \n\t" \ + PTR_ADDU "$at, "#addr", "#stride" \n\t" \ + MMI_LWC1(fp, $at, bias) \ + ".set at \n\t" #define MMI_SWC1(fp, addr, bias) \ "swc1 "#fp", "#bias"("#addr") \n\t" #define MMI_USWC1(fp, addr, bias) \ - "mfc1 %[low32], "#fp" \n\t" \ - "usw %[low32], "#bias"("#addr") \n\t" + ".set noat \n\t" \ + "mfc1 $at, "#fp" \n\t" \ + "usw $at, "#bias"("#addr") \n\t" \ + ".set at \n\t" #define MMI_SWXC1(fp, addr, stride, bias) \ - PTR_ADDU "%[addrt], "#addr", "#stride" \n\t" \ - MMI_SWC1(fp, %[addrt], bias) + ".set noat \n\t" \ + PTR_ADDU "$at, "#addr", "#stride" \n\t" \ + MMI_SWC1(fp, $at, bias) \ + ".set at \n\t" #define MMI_LDC1(fp, addr, bias) \ "ldc1 "#fp", "#bias"("#addr") \n\t" #define MMI_ULDC1(fp, addr, bias) \ - "uld %[all64], "#bias"("#addr") \n\t" \ - "dmtc1 %[all64], "#fp" \n\t" + ".set noat \n\t" \ + "uld $at, "#bias"("#addr") \n\t" \ + "dmtc1 $at, "#fp" \n\t" \ + ".set at \n\t" #define MMI_LDXC1(fp, addr, stride, bias) \ - PTR_ADDU "%[addrt], "#addr", "#stride" \n\t" \ - MMI_LDC1(fp, %[addrt], bias) + ".set noat \n\t" \ + PTR_ADDU "$at, "#addr", "#stride" \n\t" \ + MMI_LDC1(fp, $at, bias) \ + ".set at \n\t" #define MMI_SDC1(fp, addr, bias) \ "sdc1 "#fp", "#bias"("#addr") \n\t" #define MMI_USDC1(fp, addr, bias) \ - "dmfc1 %[all64], "#fp" \n\t" \ - "usd %[all64], "#bias"("#addr") \n\t" + ".set noat \n\t" \ + "dmfc1 $at, "#fp" \n\t" \ + "usd $at, "#bias"("#addr") \n\t" \ + ".set at \n\t" #define MMI_SDXC1(fp, addr, stride, bias) \ - PTR_ADDU "%[addrt], "#addr", "#stride" \n\t" \ - MMI_SDC1(fp, %[addrt], bias) + ".set noat \n\t" \ + PTR_ADDU "$at, "#addr", "#stride" \n\t" \ + MMI_SDC1(fp, $at, bias) \ + ".set at \n\t" #define MMI_LQ(reg1, reg2, addr, bias) \ "ld "#reg1", "#bias"("#addr") \n\t" \ @@ -116,11 +145,6 @@ #elif HAVE_LOONGSON3 /* !HAVE_LOONGSON2 */ -#define DECLARE_VAR_ALL64 -#define RESTRICT_ASM_ALL64 -#define DECLARE_VAR_ADDRT -#define RESTRICT_ASM_ADDRT - #define MMI_LWX(reg, addr, stride, bias) \ "gslwx "#reg", "#bias"("#addr", "#stride") \n\t" @@ -138,12 +162,12 @@ #if _MIPS_SIM == _ABIO32 /* workaround for 3A2000 gslwlc1 bug */ -#define DECLARE_VAR_LOW32 int32_t low32 -#define RESTRICT_ASM_LOW32 [low32]"=&r"(low32), - -#define MMI_ULWC1(fp, addr, bias) \ - "ulw %[low32], "#bias"("#addr") \n\t" \ - "mtc1 %[low32], "#fp" \n\t" +#define MMI_LWLRC1(fp, addr, bias, off) \ + ".set noat \n\t" \ + "lwl $at, "#bias"+"#off"("#addr") \n\t" \ + "lwr $at, "#bias"("#addr") \n\t" \ + "mtc1 $at, "#fp" \n\t" \ + ".set at \n\t" #else /* _MIPS_SIM != _ABIO32 */ |