Jeff Johnston
13 years ago
26 changed files with 329 additions and 46 deletions
@ -0,0 +1,123 @@ |
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#ifndef _VH_H |
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#define _VH_H |
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/*
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BREAK #SWID definition: |
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0x00 – 0x1F: Free to use |
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0x20 – 0x1FF: Reserved for EX9 |
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0x0200 – 0x7EFF: Free to use |
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0x7F00 – 0x7FFF: Reserved for virtual hosting |
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*/ |
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/* These are #SWID defined for Virtual Hosting. */ |
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#define VH_FOPEN 0x7F00 |
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#define VH_FREOPEN 0x7F01 |
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#define VH_FCLOSE 0x7F02 |
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#define VH_FFLUSH 0x7F03 |
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#define VH_FREAD 0x7F04 |
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#define VH_FWRITE 0x7F05 |
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#define VH_FGETC 0x7F06 |
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#define VH_FGETS 0x7F07 |
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#define VH_FPUTC 0x7F08 |
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#define VH_FPUTS 0x7F09 |
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#define VH_UNGETC 0x7F0A |
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#define VH_FTELL 0x7F0B |
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#define VH_FSEEK 0x7F0C |
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#define VH_REWIND 0x7F0D |
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#define VH_CLEARERR 0x7F0E |
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#define VH_FEOF 0x7F0F |
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#define VH_FERROR 0x7F10 |
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#define VH_REMOVE 0x7F11 |
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#define VH_TMPFILE 0x7F12 |
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/* From here, define Low-level routines. */ |
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#define VH_EXIT 0x7F20 |
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#define VH_OPEN 0x7F21 |
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#define VH_CLOSE 0x7F22 |
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#define VH_READ 0x7F23 |
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#define VH_WRITE 0x7F24 |
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#define VH_LSEEK 0x7F25 |
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#define VH_UNLINK 0x7F26 |
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#define VH_RENAME 0x7F27 |
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#define VH_FSTAT 0x7F28 |
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#define VH_STAT 0x7F29 |
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#define VH_GETTIMEOFDAY 0x7F2A |
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#define VH_ISATTY 0x7F2B |
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#define VH_SYSTEM 0x7F2C |
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#define VH_GETERR 0x7F2D /* The method we get errno. */ |
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/* Define macros that generate assembly output.
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Generate a System Call exception to notify GDB |
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to handle this virtual I/O routine. */ |
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.macro TYPE0 name num |
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/* If r0 is not NULL(0), set errno. */ |
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.text |
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.global \name |
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.type \name, @function |
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.align 2 |
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\name: |
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BREAK \num /* Generate_Exception(Breakpoint); */ |
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bnez $r0, 1f /* Branch if success.
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r0 value is not NULL(0). */ |
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BREAK VH_GETERR |
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l.w $r15, _impure_ptr |
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swi $r0, [$r15] /* Set errno. */ |
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move $r0, 0 /* Set return value as 0. */ |
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1: |
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ret |
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.size \name, .-\name |
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.endm |
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.macro TYPE1 name num |
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/* If r0 is EOF(-1), set errno. */ |
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.text |
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.global \name |
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.type \name, @function |
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.align 2 |
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\name: |
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BREAK \num /* Generate_Exception(Breakpoint); */ |
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addi $r15, $r0, 1 |
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bnezs8 1f /* Branch if success.
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r0 value is EOF(-1). */ |
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BREAK VH_GETERR |
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l.w $r15, _impure_ptr |
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swi $r0, [$r15] /* Set errno. */ |
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move $r0, -1 /* Set return value as -1. */ |
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1: |
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ret |
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.size \name, .-\name |
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.endm |
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.macro TYPE2 name num |
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/* If r0 is less than r2, set errno. */ |
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.text |
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.global \name |
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.type \name, @function |
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.align 2 |
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\name: |
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BREAK \num /* Generate_Exception(Breakpoint); */ |
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slt $r15, $r0, $r2 /* If r15 is set, set errno. */ |
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beqzs8 1f /* Branch if success.
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r15 is zero. */ |
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move $r4, $r0 /* Keep return value r0. */ |
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BREAK VH_GETERR |
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l.w $r15, _impure_ptr |
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swi $r0, [$r15] /* Set errno. */ |
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move $r0, $r4 /* Restore r0. */ |
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1: |
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ret |
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.size \name, .-\name |
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.endm |
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.macro TYPE3 name num |
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/* No errors are defined. */ |
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.text |
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.global \name |
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.type \name, @function |
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.align 2 |
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\name: |
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BREAK \num /* Generate_Exception(Breakpoint); */ |
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ret |
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.size \name, .-\name |
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.endm |
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#endif /* _VH_H */ |
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