diff options
Diffstat (limited to 'sysdeps/alpha/dl-machine.h')
| -rw-r--r-- | sysdeps/alpha/dl-machine.h | 71 |
1 files changed, 49 insertions, 22 deletions
diff --git a/sysdeps/alpha/dl-machine.h b/sysdeps/alpha/dl-machine.h index ad79ef669c..b16e1c884c 100644 --- a/sysdeps/alpha/dl-machine.h +++ b/sysdeps/alpha/dl-machine.h @@ -289,37 +289,64 @@ _dl_start_user: /* Store the highest stack address. */ stq $30, __libc_stack_end /* See if we were run as a command with the executable file - name as an extra leading argument. If so, adjust the stack - pointer to skip _dl_skip_args words. */ + name as an extra leading argument. */ ldl $1, _dl_skip_args - beq $1, 0f - ldq $2, 0($sp) - subq $2, $1, $2 - s8addq $1, $sp, $sp - stq $2, 0($sp) - /* Load _dl_main_searchlist into s1 to pass to _dl_init_next. */ -0: ldq $10, _dl_main_searchlist - /* Call _dl_init_next to return the address of an initializer - function to run. */ -1: mov $10, $16 - jsr $26, _dl_init_next - ldgp $gp, 0($26) - beq $0, 2f - mov $0, $27 - jsr $26, ($0) - ldgp $gp, 0($26) - br 1b -2: /* Clear the startup flag. */ - stl $31, _dl_starting_up + beq $1, $fixup_stack +$fixup_stack_ret: + /* The special initializer gets called with the stack just + as the application's entry point will see it; it can + switch stacks if it moves these contents over. */ +" RTLD_START_SPECIAL_INIT " + /* Call _dl_init(_dl_loaded, argc, argv, envp) to run initializers. */ + ldq $16, _dl_loaded + ldq $17, 0($sp) + lda $18, 8($sp) + s8addq $17, 8, $19 + addq $19, $18, $19 + jsr $26, _dl_init /* Pass our finalizer function to the user in $0. */ lda $0, _dl_fini /* Jump to the user's entry point. */ mov $9, $27 jmp ($9) +$fixup_stack: + /* Adjust the stack pointer to skip _dl_skip_args words. This + involves copying everything down, since the stack pointer must + always be 16-byte aligned. */ + ldq $2, 0($sp) + subq $2, $1, $2 + mov $sp, $4 + s8addq $2, $sp, $3 + stq $2, 0($sp) + /* Copy down argv. */ +0: ldq $5, 8($3) + addq $4, 8, $4 + addq $3, 8, $3 + stq $5, 0($4) + bne $5, 0b + /* Copy down envp. */ +1: ldq $5, 8($3) + addq $4, 8, $4 + addq $3, 8, $3 + stq $5, 0($4) + bne $5, 1b + /* Copy down auxiliary table. */ +2: ldq $5, 8($3) + ldq $6, 16($3) + addq $4, 16, $4 + addq $3, 16, $3 + stq $5, -8($4) + stq $6, 0($4) + bne $5, 2b + br $fixup_stack_ret .end _dl_start_user .set noat .previous"); +#ifndef RTLD_START_SPECIAL_INIT +#define RTLD_START_SPECIAL_INIT /* nothing */ +#endif + /* Nonzero iff TYPE describes relocation of a PLT entry, so PLT entries should not be allowed to define the value. */ #define elf_machine_lookup_noplt_p(type) ((type) == R_ALPHA_JMP_SLOT) @@ -350,7 +377,7 @@ elf_machine_fixup_plt(struct link_map *l, const Elf64_Rela *reloc, /* Recover the PLT entry address by calculating reloc's index into the .rela.plt, and finding that entry in the .plt. */ rela_plt = (void *) D_PTR (l, l_info[DT_JMPREL]); - plte = (void *) (D_PTR (l, [DT_PLTGOT]) + 32); + plte = (void *) (D_PTR (l, l_info[DT_PLTGOT]) + 32); plte += 3 * (reloc - rela_plt); /* Find the displacement from the plt entry to the function. */ |