From 420a2f8b8dfe796e5f38da1e233ee99be6ec028f Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Thu, 29 Apr 2004 20:09:32 +0000 Subject: [BZ #140] 2004-04-29 Philip Blundell * sysdeps/arm/dl-machine.h (RTLD_START): Avoid unnecessary GOT entries. [BZ #140] * sysdeps/unix/sysv/linux/sys/sysctl.h: Remove linux/compiler.h include. (_LINUX_KERNEL_H, _LINUX_TYPES_H, _LINUX_LIST_H): Only define if not yet defined, #undef back after including linux/sysctl.h if defined here. (__LINUX_COMPILER_H, __user): Define if not yet defined, #undef back after including linux/sysctl.h if defined here. --- sysdeps/arm/dl-machine.h | 33 +++++++++++++-------------------- 1 file changed, 13 insertions(+), 20 deletions(-) (limited to 'sysdeps/arm/dl-machine.h') diff --git a/sysdeps/arm/dl-machine.h b/sysdeps/arm/dl-machine.h index a131676d5a..5dfe3346f5 100644 --- a/sysdeps/arm/dl-machine.h +++ b/sysdeps/arm/dl-machine.h @@ -255,26 +255,27 @@ _dl_runtime_profile:\n\ .globl _start\n\ .globl _dl_start_user\n\ _start:\n\ + @ we are PIC code, so get global offset table\n\ + ldr sl, .L_GET_GOT\n\ + @ See if we were run as a command with the executable file\n\ + @ name as an extra leading argument.\n\ + ldr r4, .L_SKIP_ARGS\n\ @ at start time, all the args are on the stack\n\ mov r0, sp\n\ bl _dl_start\n\ @ returns user entry point in r0\n\ _dl_start_user:\n\ - mov r6, r0\n\ - @ we are PIC code, so get global offset table\n\ - ldr sl, .L_GET_GOT\n\ add sl, pc, sl\n\ .L_GOT_GOT:\n\ - @ See if we were run as a command with the executable file\n\ - @ name as an extra leading argument.\n\ - ldr r4, .L_SKIP_ARGS\n\ ldr r4, [sl, r4]\n\ @ get the original arg count\n\ ldr r1, [sp]\n\ - @ subtract _dl_skip_args from it\n\ - sub r1, r1, r4\n\ - @ adjust the stack pointer to skip them\n\ + @ save the entry point in another register\n\ + mov r6, r0\n\ + @ adjust the stack pointer to skip the extra args\n\ add sp, sp, r4, lsl #2\n\ + @ subtract _dl_skip_args from original arg count\n\ + sub r1, r1, r4\n\ @ get the argv address\n\ add r2, sp, #4\n\ @ store the new argc in the new stack location\n\ @@ -286,29 +287,21 @@ _dl_start_user:\n\ @ now we call _dl_init\n\ ldr r0, .L_LOADED\n\ ldr r0, [sl, r0]\n\ - ldr r0, [r0]\n\ @ call _dl_init\n\ bl _dl_init_internal(PLT)\n\ - @ clear the startup flag\n\ - ldr r2, .L_STARTUP_FLAG\n\ - ldr r1, [sl, r2]\n\ - mov r0, #0\n\ - str r0, [r1]\n\ @ load the finalizer function\n\ ldr r0, .L_FINI_PROC\n\ - ldr r0, [sl, r0]\n\ + add r0, sl, r0\n\ @ jump to the user_s entry point\n\ mov pc, r6\n\ .L_GET_GOT:\n\ .word _GLOBAL_OFFSET_TABLE_ - .L_GOT_GOT - 4\n\ .L_SKIP_ARGS:\n\ .word _dl_skip_args(GOTOFF)\n\ -.L_STARTUP_FLAG:\n\ - .word _dl_starting_up(GOT)\n\ .L_FINI_PROC:\n\ - .word _dl_fini(GOT)\n\ + .word _dl_fini(GOTOFF)\n\ .L_LOADED:\n\ - .word _rtld_local(GOT)\n\ + .word _rtld_local(GOTOFF)\n\ .previous\n\ "); -- cgit 1.4.1