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alpha: Remove _dl_skip_args usage

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Since ad43cac44a the generic code already shuffles the argv/envp/auxv
on the stack to remove the ld.so own arguments and thus _dl_skip_args
is always 0.  It makes the fixup_stack branch ununsed.

Checked with qemu-user that arguments are correctly passed on both
constructors and main program.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella 2022-05-26 13:00:48 -03:00
parent a8f62164b1
commit 1e4fb2e1ab
1 changed files with 0 additions and 41 deletions
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41
sysdeps/alpha/dl-machine.h
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@ -156,12 +156,6 @@ _dl_start_user: \n\
.prologue 0 \n\
/* Save the user entry point address in s0. */ \n\
mov $0, $9 \n\
/* See if we were run as a command with the executable \n\
file name as an extra leading argument. */ \n\
ldah $1, _dl_skip_args($gp) !gprelhigh \n\
ldl $1, _dl_skip_args($1) !gprellow \n\
bne $1, $fixup_stack \n\
$fixup_stack_ret: \n\
/* The special initializer gets called with the stack \n\
just as the application's entry point will see it; \n\
it can switch stacks if it moves these contents \n\
@ -182,41 +176,6 @@ $fixup_stack_ret: \n\
/* Jump to the user's entry point. */ \n\
mov $9, $27 \n\
jmp ($9) \n\
$fixup_stack: \n\
/* Adjust the stack pointer to skip _dl_skip_args words.\n\
This involves copying everything down, since the \n\
stack pointer must always be 16-byte aligned. */ \n\
ldah $7, __GI__dl_argv($gp) !gprelhigh \n\
ldq $2, 0($sp) \n\
ldq $5, __GI__dl_argv($7) !gprellow \n\
subq $31, $1, $6 \n\
subq $2, $1, $2 \n\
s8addq $6, $5, $5 \n\
mov $sp, $4 \n\
s8addq $1, $sp, $3 \n\
stq $2, 0($sp) \n\
stq $5, __GI__dl_argv($7) !gprellow \n\
/* Copy down argv. */ \n\
0: ldq $5, 8($3) \n\
addq $4, 8, $4 \n\
addq $3, 8, $3 \n\
stq $5, 0($4) \n\
bne $5, 0b \n\
/* Copy down envp. */ \n\
1: ldq $5, 8($3) \n\
addq $4, 8, $4 \n\
addq $3, 8, $3 \n\
stq $5, 0($4) \n\
bne $5, 1b \n\
/* Copy down auxiliary table. */ \n\
2: ldq $5, 8($3) \n\
ldq $6, 16($3) \n\
addq $4, 16, $4 \n\
addq $3, 16, $3 \n\
stq $5, -8($4) \n\
stq $6, 0($4) \n\
bne $5, 2b \n\
br $fixup_stack_ret \n\
.end _dl_start_user \n\
.set noat \n\
.previous");