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crtso.S: save *argv[] and argc globally, to be used by getprogname().

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This commit is contained in:
Ben Gras 2010-06-09 12:10:31 +00:00
parent ba9990cc00
commit c046958745
1 changed files with 12 additions and 2 deletions
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14
lib/csu/i386/crtso.S
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@ -23,7 +23,7 @@ begdata:
.bss
begbss:
.globl crtso, __penviron, __penvp
.globl crtso, __penviron, __penvp, ___prognamep, ___argc
.globl __minix_datastart, __minix_mainjump, __minix_unmapzero
.extern _main, _exit
@ -57,6 +57,13 @@ crtso:
movl __penviron, %ebx
movl %ecx, (%ebx) /* *_penviron = envp; */
/* Save argv[] and argc. This is so that we can return
* argv[0] in the future, without having to check whether
* argv can be dereferenced safely now.
*/
mov %edx, (___prognamep)
mov %eax, (___argc)
push %ecx /* push envp */
push %edx /* push argv */
push %eax /* push argc */
@ -108,8 +115,11 @@ __minix_datastart:
.data
__penviron:
.long __penvp /* Pointer to environ, or hidden pointer */
.bss
___prognamep:
.space 4
___argc:
.space 4
.lcomm __penvp, 4 /* Hidden environment vector */
.extern endtext /* Force loading of end labels. */