From: Adhemerval Zanella Date: Thu, 26 May 2022 16:14:37 +0000 (-0300) Subject: sparc: Remove _dl_skip_args usage X-Git-Tag: glibc-2.36~221 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b6712b137f2ba6160599bdae60b8562bb6361737;p=thirdparty%2Fglibc.git sparc: 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 on sparc64-linux-gnu and sparcv9-linux-gnu. Reviewed-by: Carlos O'Donell --- diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h index 8c2408b1e69..8baf45be52f 100644 --- a/sysdeps/sparc/sparc32/dl-machine.h +++ b/sysdeps/sparc/sparc32/dl-machine.h @@ -196,48 +196,9 @@ _dl_start_user:\n\ add %l7, %o7, %l7\n\ /* Save the user entry point address in %l0 */\n\ mov %o0, %l0\n\ - /* See if we were run as a command with the executable file name as an\n\ - extra leading argument. If so, adjust the contents of the stack. */\n\ - " RTLD_GOT_ADDRESS(%l7, %g2, _dl_skip_args) "\n\ - ld [%g2], %i0\n\ - tst %i0\n\ - beq 3f\n\ - ld [%sp+22*4], %i5 /* load argc */\n\ - /* Find out how far to shift. */\n\ - " RTLD_GOT_ADDRESS(%l7, %l3, _dl_argv) "\n\ - sub %i5, %i0, %i5\n\ - ld [%l3], %l4\n\ - sll %i0, 2, %i2\n\ - st %i5, [%sp+22*4]\n\ - sub %l4, %i2, %l4\n\ - add %sp, 23*4, %i1\n\ - add %i1, %i2, %i2\n\ - st %l4, [%l3]\n\ - /* Copy down argv */\n\ -21: ld [%i2], %i3\n\ - add %i2, 4, %i2\n\ - tst %i3\n\ - st %i3, [%i1]\n\ - bne 21b\n\ - add %i1, 4, %i1\n\ - /* Copy down env */\n\ -22: ld [%i2], %i3\n\ - add %i2, 4, %i2\n\ - tst %i3\n\ - st %i3, [%i1]\n\ - bne 22b\n\ - add %i1, 4, %i1\n\ - /* Copy down auxiliary table. */\n\ -23: ld [%i2], %i3\n\ - ld [%i2+4], %i4\n\ - add %i2, 8, %i2\n\ - tst %i3\n\ - st %i3, [%i1]\n\ - st %i4, [%i1+4]\n\ - bne 23b\n\ - add %i1, 8, %i1\n\ + ld [%sp+22*4], %i5 /* load argc */\n\ /* %o0 = _dl_loaded, %o1 = argc, %o2 = argv, %o3 = envp. */\n\ -3: " RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) "\n\ + " RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) "\n\ add %sp, 23*4, %o2\n\ sll %i5, 2, %o3\n\ add %o3, 4, %o3\n\ diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h index 8c4bab14fc5..d34d9aa4700 100644 --- a/sysdeps/sparc/sparc64/dl-machine.h +++ b/sysdeps/sparc/sparc64/dl-machine.h @@ -245,45 +245,9 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[], " add %l7, %o7, %l7\n" \ " /* Save the user entry point address in %l0. */\n" \ " mov %o0, %l0\n" \ -" /* See if we were run as a command with the executable file name as an\n" \ -" extra leading argument. If so, we must shift things around since we\n" \ -" must keep the stack doubleword aligned. */\n" \ - RTLD_GOT_ADDRESS(%l7, %g5, _dl_skip_args) \ -" ld [%g5], %i0\n" \ -" brz,pt %i0, 2f\n" \ -" ldx [%sp + " __S(STACK_BIAS) " + 22*8], %i5\n" \ -" /* Find out how far to shift. */\n" \ -" sub %i5, %i0, %i5\n" \ -" sllx %i0, 3, %l6\n" \ - RTLD_GOT_ADDRESS(%l7, %l4, _dl_argv) \ -" stx %i5, [%sp + " __S(STACK_BIAS) " + 22*8]\n" \ -" add %sp, " __S(STACK_BIAS) " + 23*8, %i1\n" \ -" add %i1, %l6, %i2\n" \ -" ldx [%l4], %l5\n" \ -" /* Copy down argv. */\n" \ -"12: ldx [%i2], %i3\n" \ -" add %i2, 8, %i2\n" \ -" stx %i3, [%i1]\n" \ -" brnz,pt %i3, 12b\n" \ -" add %i1, 8, %i1\n" \ -" sub %l5, %l6, %l5\n" \ -" /* Copy down envp. */\n" \ -"13: ldx [%i2], %i3\n" \ -" add %i2, 8, %i2\n" \ -" stx %i3, [%i1]\n" \ -" brnz,pt %i3, 13b\n" \ -" add %i1, 8, %i1\n" \ -" /* Copy down auxiliary table. */\n" \ -"14: ldx [%i2], %i3\n" \ -" ldx [%i2 + 8], %i4\n" \ -" add %i2, 16, %i2\n" \ -" stx %i3, [%i1]\n" \ -" stx %i4, [%i1 + 8]\n" \ -" brnz,pt %i3, 14b\n" \ -" add %i1, 16, %i1\n" \ -" stx %l5, [%l4]\n" \ +" ldx [%sp + " __S(STACK_BIAS) " + 22*8], %i5\n" \ " /* %o0 = _dl_loaded, %o1 = argc, %o2 = argv, %o3 = envp. */\n" \ -"2:\t" RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) \ +"" RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) \ " sllx %i5, 3, %o3\n" \ " add %sp, " __S(STACK_BIAS) " + 23*8, %o2\n" \ " add %o3, 8, %o3\n" \