| Line 354... |
Line 354... |
/* r7 and r8 hold actual real ESR and EPCR, respectively */
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/* r7 and r8 hold actual real ESR and EPCR, respectively */
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/* We'll restore them now */
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/* We'll restore them now */
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l.mtspr r0, r7, SPR_ESR_BASE /* SR before syscall */
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l.mtspr r0, r7, SPR_ESR_BASE /* SR before syscall */
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l.mtspr r0, r8, SPR_EPCR_BASE
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l.mtspr r0, r8, SPR_EPCR_BASE
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l.add r16, r16, r3 /* Add syscall number to our counter */
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l.add r16, r16, r3 /* Add syscall number to our counter */
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l.movhi r4, hi(0x01000000) /* 16MB mark of memory */
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l.movhi r4, hi(0x00400000) /* 4MB mark of memory */
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/* Ensure memory access OK */
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/* Ensure memory access OK */
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l.slli r3, r3, 2 /* Turn syscall number into a word address (<< 2) */
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l.slli r3, r3, 2 /* Turn syscall number into a word address (<< 2) */
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l.add r4, r4, r3 /* Access this offset from 16MB mark */
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l.add r4, r4, r3 /* Access this offset from 4MB mark */
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l.sw 0(r4), r16 /* Do a write to memory */
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l.sw 0(r4), r16 /* Do a write to memory */
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l.lwz r16, 0(r4) /* Do a read from memory */
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l.lwz r16, 0(r4) /* Do a read from memory */
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/* Report running value of syscall counter */
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/* Report running value of syscall counter */
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l.or r3, r0, r16
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l.or r3, r0, r16
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l.nop 2
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l.nop 2
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