[glibc] riscv: Remove _dl_skip_args usage

[glibc] riscv: Remove _dl_skip_args usage

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d62123c1ed2506f85a2f17aa195eb682796fd7ed

commit d62123c1ed2506f85a2f17aa195eb682796fd7ed
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu May 26 13:12:44 2022 -0300

    riscv: Remove _dl_skip_args usage
    
    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.   So there is no need to adjust the argc or argv.
    
    Checked with qemu-user that arguments are correctly passed on both
    constructors and main program.
    
    Reviewed-by: Carlos O'Donell <carlos@redhat.com>

Diff:
---
 sysdeps/riscv/dl-machine.h | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/sysdeps/riscv/dl-machine.h b/sysdeps/riscv/dl-machine.h
index 4912735c2b..9e026ae011 100644
--- a/sysdeps/riscv/dl-machine.h
+++ b/sysdeps/riscv/dl-machine.h
@@ -107,18 +107,8 @@ elf_machine_dynamic (void)
 	" _RTLD_PROLOGUE (_dl_start_user) "\
 	# Stash user entry point in s0.\n\
 	mv s0, a0\n\
-	# See if we were run as a command with the executable file\n\
-	# name as an extra leading argument.\n\
-	lw a0, _dl_skip_args\n\
-	# Load the original argument count.\n\
+	# Load the adjusted argument count.\n\
 	" STRINGXP (REG_L) " a1, 0(sp)\n\
-	# Subtract _dl_skip_args from it.\n\
-	sub a1, a1, a0\n\
-	# Adjust the stack pointer to skip _dl_skip_args words.\n\
-	sll a0, a0, " STRINGXP (PTRLOG) "\n\
-	add sp, sp, a0\n\
-	# Save back the modified argument count.\n\
-	" STRINGXP (REG_S) " a1, 0(sp)\n\
 	# Call _dl_init (struct link_map *main_map, int argc, char **argv, char **env) \n\
 	" STRINGXP (REG_L) " a0, _rtld_local\n\
 	add a2, sp, " STRINGXP (SZREG) "\n\