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81 lines
1.8 KiB
Plaintext
81 lines
1.8 KiB
Plaintext
NEW
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AUTO 3,1
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*/--------------------------------------
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* # SetEnv
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* Change or add an environment variable
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* ## C / CSH
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* `int setenv(const char *name, const char *value);`
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* ## ASM
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* `>PUSHW name`
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* `>PUSHW value`
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* `>SYSCALL setenv`
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* ## RETURN VALUE
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*\--------------------------------------
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K.SetEnv
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* >PULLW FORPNT value
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* >PULLW TXTPTR name
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* ldy #S.PS.hENV
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* lda (pPS),y
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* jmp K.SYSCALL.JMPX
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*/--------------------------------------
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* # GetEnv
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* searches the environment list to find the environment variable name,
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* and returns a pointer to the corresponding value string.
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* ## C / CSH
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* `char *getenv(const char *name, char *value);`
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* ## ASM
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* `>PUSHW name`
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* `>PUSHW value`
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* `>SYSCALL getenv`
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* ## RETURN VALUE
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* CC : Y,A = PTR to VALUE (C-String)
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* CS : not found
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*\--------------------------------------
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K.GetEnv >PULLW FORPNT value
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*/--------------------------------------
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* # PutEnv
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* Change or add an environment variable, string is 'NAME=VALUE'
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* ## C / CSH
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* `int putenv(char *string);`
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* ## ASM
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* **In:**
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* `>PUSHW string`
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* `>SYSCALL putenv`
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* ## RETURN VALUE
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*\--------------------------------------
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K.PutEnv
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* >PULLW TXTPTR name=value
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*/--------------------------------------
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* # UnsetEnv
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* Remove an environment variable
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* ## C / CSH
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* `int unsetenv(const char *name);`
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* ## ASM
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* `>PUSHW name`
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* `>SYSCALL unsetenv`
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* ## RETURN VALUE
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*\--------------------------------------
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K.UnsetEnv >PULLW TXTPTR name
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K.GetEnv.I ldy #S.PS.hENV FROM STDLIB:EXPAND
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lda (pPS),y
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pha
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ldy #S.PS.hSession
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lda (pPS),y
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tay
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lda S.Table.hSID-1,y
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tay Y = hSID
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pla A = hENV
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jmp K.SYSCALL.JMPX
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*--------------------------------------
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MAN
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SAVE usr/src/sys/kernel.s.env
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LOAD usr/src/sys/kernel.s
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ASM
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