diff options
Diffstat (limited to 'libgloss/nds32/vh.h')
| -rw-r--r-- | libgloss/nds32/vh.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/libgloss/nds32/vh.h b/libgloss/nds32/vh.h new file mode 100644 index 000000000..4ee3e8961 --- /dev/null +++ b/libgloss/nds32/vh.h @@ -0,0 +1,123 @@ +#ifndef _VH_H +#define _VH_H + +/* +BREAK #SWID definition: +0x00 – 0x1F: Free to use +0x20 – 0x1FF: Reserved for EX9 +0x0200 – 0x7EFF: Free to use +0x7F00 – 0x7FFF: Reserved for virtual hosting +*/ +/* These are #SWID defined for Virtual Hosting. */ +#define VH_FOPEN 0x7F00 +#define VH_FREOPEN 0x7F01 +#define VH_FCLOSE 0x7F02 +#define VH_FFLUSH 0x7F03 +#define VH_FREAD 0x7F04 +#define VH_FWRITE 0x7F05 +#define VH_FGETC 0x7F06 +#define VH_FGETS 0x7F07 +#define VH_FPUTC 0x7F08 +#define VH_FPUTS 0x7F09 +#define VH_UNGETC 0x7F0A +#define VH_FTELL 0x7F0B +#define VH_FSEEK 0x7F0C +#define VH_REWIND 0x7F0D +#define VH_CLEARERR 0x7F0E +#define VH_FEOF 0x7F0F +#define VH_FERROR 0x7F10 +#define VH_REMOVE 0x7F11 +#define VH_TMPFILE 0x7F12 +/* From here, define Low-level routines. */ +#define VH_EXIT 0x7F20 +#define VH_OPEN 0x7F21 +#define VH_CLOSE 0x7F22 +#define VH_READ 0x7F23 +#define VH_WRITE 0x7F24 +#define VH_LSEEK 0x7F25 +#define VH_UNLINK 0x7F26 +#define VH_RENAME 0x7F27 +#define VH_FSTAT 0x7F28 +#define VH_STAT 0x7F29 +#define VH_GETTIMEOFDAY 0x7F2A +#define VH_ISATTY 0x7F2B +#define VH_SYSTEM 0x7F2C +#define VH_GETERR 0x7F2D /* The method we get errno. */ + + +/* Define macros that generate assembly output. + Generate a System Call exception to notify GDB + to handle this virtual I/O routine. */ + +.macro TYPE0 name num +/* If r0 is not NULL(0), set errno. */ + .text + .global \name + .type \name, @function + .align 2 +\name: + BREAK \num /* Generate_Exception(Breakpoint); */ + bnez $r0, 1f /* Branch if success. + r0 value is not NULL(0). */ + BREAK VH_GETERR + l.w $r15, _impure_ptr + swi $r0, [$r15] /* Set errno. */ + move $r0, 0 /* Set return value as 0. */ +1: + ret + .size \name, .-\name +.endm + +.macro TYPE1 name num +/* If r0 is EOF(-1), set errno. */ + .text + .global \name + .type \name, @function + .align 2 +\name: + BREAK \num /* Generate_Exception(Breakpoint); */ + addi $r15, $r0, 1 + bnezs8 1f /* Branch if success. + r0 value is EOF(-1). */ + BREAK VH_GETERR + l.w $r15, _impure_ptr + swi $r0, [$r15] /* Set errno. */ + move $r0, -1 /* Set return value as -1. */ +1: + ret + .size \name, .-\name +.endm + +.macro TYPE2 name num +/* If r0 is less than r2, set errno. */ + .text + .global \name + .type \name, @function + .align 2 +\name: + BREAK \num /* Generate_Exception(Breakpoint); */ + slt $r15, $r0, $r2 /* If r15 is set, set errno. */ + beqzs8 1f /* Branch if success. + r15 is zero. */ + move $r4, $r0 /* Keep return value r0. */ + BREAK VH_GETERR + l.w $r15, _impure_ptr + swi $r0, [$r15] /* Set errno. */ + move $r0, $r4 /* Restore r0. */ +1: + ret + .size \name, .-\name +.endm + +.macro TYPE3 name num +/* No errors are defined. */ + .text + .global \name + .type \name, @function + .align 2 +\name: + BREAK \num /* Generate_Exception(Breakpoint); */ + ret + .size \name, .-\name +.endm +#endif /* _VH_H */ |