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kern: trivially optimize userspace io memory write
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parent
01f5c89902
commit
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1 changed files with 3 additions and 6 deletions
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@ -758,7 +758,6 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess18WriteIoMemory32BitEPvPKvm:
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mov x8, x30
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mov x8, x30
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1: /* Read the word from normal memory. */
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1: /* Read the word from normal memory. */
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mov x30, x8
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ldtr w9, [x5]
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ldtr w9, [x5]
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/* Set our return address so that on read failure we continue. */
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/* Set our return address so that on read failure we continue. */
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@ -769,7 +768,7 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess18WriteIoMemory32BitEPvPKvm:
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dsb sy
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dsb sy
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2: /* Continue. */
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2: /* Continue. */
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nop
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mov x30, x8
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/* Advance. */
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/* Advance. */
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add x4, x4, #4
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add x4, x4, #4
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@ -801,7 +800,6 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess18WriteIoMemory16BitEPvPKvm:
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mov x8, x30
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mov x8, x30
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1: /* Read the word from normal memory. */
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1: /* Read the word from normal memory. */
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mov x30, x8
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ldtrh w9, [x5]
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ldtrh w9, [x5]
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/* Set our return address so that on read failure we continue. */
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/* Set our return address so that on read failure we continue. */
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@ -812,7 +810,7 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess18WriteIoMemory16BitEPvPKvm:
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dsb sy
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dsb sy
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2: /* Continue. */
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2: /* Continue. */
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nop
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mov x30, x8
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/* Advance. */
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/* Advance. */
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add x4, x4, #2
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add x4, x4, #2
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@ -844,7 +842,6 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess17WriteIoMemory8BitEPvPKvm:
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mov x8, x30
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mov x8, x30
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1: /* Read the word from normal memory. */
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1: /* Read the word from normal memory. */
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mov x30, x8
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ldtrb w9, [x5]
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ldtrb w9, [x5]
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/* Set our return address so that on read failure we continue. */
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/* Set our return address so that on read failure we continue. */
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@ -855,7 +852,7 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess17WriteIoMemory8BitEPvPKvm:
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dsb sy
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dsb sy
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2: /* Continue. */
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2: /* Continue. */
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nop
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mov x30, x8
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/* Advance. */
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/* Advance. */
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add x4, x4, #1
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add x4, x4, #1
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