Fixes some bugs with memory setup and halt-sled allocation and...

src/trusted/service_runtime/arch/x86_64/nacl_text_pad_test.S

+/*
+ * Copyright 2010 The Native Client Authors.  All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can
+ * be found in the LICENSE file.
+ */
+#include "native_client/src/trusted/service_runtime/include/bits/nacl_syscalls.h"
+#include "native_client/src/trusted/service_runtime/nacl_config.h"
+
+        .text
+start_of_text:
+
+        .p2align NACLENTRYALIGN
+write_num_10:
+        /* rdi has descriptor number, rsi has number to be printed */
+        pushq %rbp
+        movq %rsp, %rbp
+        naclspadj $-0x20, %r15  /* buffer[0x20] */
+        movl %ebp, %r8d         /* %r8 = &buffer[0x20] (off the end) */
+        xorq %rcx, %rcx         /* %ecx = 0;  (byte count) */
+
+        movq %rsi, %rax
+
+        movq $10, %r9
+do_digit_10:
+        xorq %rdx, %rdx
+        divq %r9                /* %rdx:%rax div_mod 10 */
+        addq $'0', %rdx         /* *--%r8 = remainder + '0' */
+        subl $1, %r8d
+        movb %dl, (%r15, %r8)
+        addq $1, %rcx           /* ++byte_count */
+        andq %rax, %rax
+        jnz do_digit_10
+
+        movq %rcx, %rdx
+        movq %r8, %rsi
+        /* rdi still has descriptor number */
+        call NACL_SYSCALL_ADDR(NACL_sys_write)
+
+        movq %rbp, %rsp
+        popq %r11
+        naclrestbp %r11d, %r15
+        popq %r11
+        nacljmp %r11d, %r15
+
+        .p2align NACLENTRYALIGN
+write_num_16:
+        pushq %rbp
+        movq %rsp, %rbp
+        naclspadj $-0x20, %r15
+        movl %ebp, %r8d
+        xorq %rcx, %rcx
+do_digit_16:
+        movq %rsi, %rax
+        andq $0xf, %rax
+        addq $'0', %rax
+        cmpq $(10 + '0'), %rax
+        jl do_digit_not_upper
+        addq $('a'-'0'-10), %rax
+do_digit_not_upper:
+        subl $1, %r8d
+        movb %al, (%r15, %r8)
+        addq $1, %rcx
+        shrq $4, %rsi
+        jnz do_digit_16
+
+        movq %rcx, %rdx
+        movq %r8, %rsi
+        /* rdi still has descriptor number */
+        call NACL_SYSCALL_ADDR(NACL_sys_write)
+
+        movq %rbp, %rsp
+        popq %r11
+        naclrestbp %r11d, %r15
+        popq %r11
+        nacljmp %r11d, %r15
+
+        .p2align NACLENTRYALIGN
+write_char:
+        pushq %rbp
+        movq %rsp, %rbp
+        subl $0x10, %esp
+        addq %r15, %rsp
+
+        movl %esp, %r8d
+        movb %sil, (%r15, %r8)
+        movq $1, %rdx
+        movl %esp, %esi
+        /* %rdi retains value */
+        call NACL_SYSCALL_ADDR(NACL_sys_write)
+
+        movq %rbp, %rsp
+        popq %r11
+        naclrestbp %r11d, %r15
+        popq %r11
+        nacljmp %r11d, %r15
+
+        .p2align NACLENTRYALIGN
+        .globl _start
+_start:
+        movq $123456789012345, %rsi
+        movq $1, %rdi
+        call write_num_10
+
+        movq $'\n', %rsi
+        movq $1, %rdi
+        call write_char
+
+        movq $0xdeadbeefcafebabe, %rsi
+        movq $1, %rdi
+        call write_num_16
+
+        movq $'\n', %rsi
+        movq $1, %rdi
+        call write_char
+
+        leaq end_of_text, %rsi
+        movq $1, %rdi
+        call write_num_16
+
+        movq $'\n', %rsi
+        movq $1, %rdi
+        call write_char
+
+        movq $0, %rdi
+        call NACL_SYSCALL_ADDR(NACL_sys_sysbrk)
+
+        xorq %r12, %r12  /* r12 holds our eventual exit status */
+        cmpl $EXPECTED_BREAK, %eax
+        je brk_sane
+        movq $1, %r12
+brk_sane:
+
+        movq %rax, %rsi
+        movq $1, %rdi
+        call write_num_16
+
+        movq $'\n', %rsi
+        movq $1, %rdi
+        call write_char
+
+        movq $EXPECTED_BREAK, %rsi
+        movq $1, %rdi
+        call write_num_16
+
+        movq $'\n', %rsi
+        movq $1, %rdi
+        call write_char
+
+#if EXPECTED_RODATA != 0
+        movq $12, %rdx
+        movq $ro_str, %rsi
+        movq $1, %rdi
+        call NACL_SYSCALL_ADDR(NACL_sys_write)
+
+        movq $ro_str, %rsi
+        movq $1, %rdi
+        call write_num_16
+
+        movq $'\n', %rsi
+        movq $1, %rdi
+        call write_char
+
+        leaq ro_str, %rax
+        cmpq $EXPECTED_RODATA, %rax
+        je ro_sane
+        movq $1, %r12
+ro_sane:
+
+        leaq ro_str, %rsi
+        movq $1, %rdi
+        call write_num_16
+
+        movq $'\n', %rsi
+        movq $1, %rdi
+        call write_char
+#endif
+
+        movq %r12, %rdi
+        call NACL_SYSCALL_ADDR(NACL_sys_exit)
+
+        .skip TEXT_EXTEND - (. - start_of_text), 0xf4
+end_of_text:
+
+#if EXPECTED_RODATA != 0
+        .section .rodata
+ro_str: .ascii "Hello world\n"
+        /*      123456789012 */
+#endif