bootrom/sdboot/linker/sdboot.elf.lds

   1 OUTPUT_ARCH("riscv")
   2 ENTRY(_prog_start)
   3
   4 INCLUDE memory.lds
   5
   6 PHDRS
   7 {
   8   text PT_LOAD;
   9   data PT_LOAD;
  10   bss PT_LOAD;
  11 }
  12
  13 SECTIONS
  14 {
  15   PROVIDE(_ram = ORIGIN(memory_mem));
  16   PROVIDE(_ram_end = _ram + LENGTH(memory_mem));
  17
  18   .text ALIGN((ORIGIN(maskrom_mem) + 0x0), 8) : AT(ALIGN((ORIGIN(maskrom_mem) + 0x0), 8)) {
  19     PROVIDE(_ftext = .);
  20     *(.text.init)
  21     *(.text.unlikely .text.unlikely.*)
  22     *(.text .text.* .gnu.linkonce.t.*)
  23     PROVIDE(_etext = .);
  24     . += 0x40; /* to create a gap between .text and .data b/c ifetch can fetch ahead from .data */
  25   } >maskrom_mem  :text
  26
  27   .eh_frame ALIGN((ADDR(.text) + SIZEOF(.text)), 8) : AT(ALIGN((LOADADDR(.text) + SIZEOF(.text)), 8)) {
  28     *(.eh_frame)
  29   } >maskrom_mem  :text
  30
  31   .rodata ALIGN((ADDR(.eh_frame) + SIZEOF(.eh_frame)), 8) : AT(ALIGN((LOADADDR(.eh_frame) + SIZEOF(.eh_frame)), 8)) ALIGN_WITH_INPUT {
  32     *(.rodata .rodata.* .gnu.linkonce.r.*)
  33   } >maskrom_mem  :data
  34
  35   .srodata ALIGN((ADDR(.rodata) + SIZEOF(.rodata)), 8) : AT(ALIGN((LOADADDR(.rodata) + SIZEOF(.rodata)), 8)) ALIGN_WITH_INPUT {
  36     *(.srodata.cst16)
  37     *(.srodata.cst8)
  38     *(.srodata.cst4)
  39     *(.srodata.cst2)
  40     *(.srodata.*)
  41   } >maskrom_mem  :data
  42
  43   .data ALIGN((ADDR(.srodata) + SIZEOF(.srodata)), 8) : AT(ALIGN((LOADADDR(.srodata) + SIZEOF(.srodata)), 8)) ALIGN_WITH_INPUT {
  44     *(.data .data.* .gnu.linkonce.d.*)
  45     *(.tohost) /* TODO: Support sections that aren't explicitly listed in this linker script */
  46   } >maskrom_mem  :data
  47
  48   .sdata ALIGN((ADDR(.data) + SIZEOF(.data)), 8) : AT(ALIGN((LOADADDR(.data) + SIZEOF(.data)), 8)) ALIGN_WITH_INPUT {
  49     *(.sdata .sdata.* .gnu.linkonce.s.*)
  50   } >maskrom_mem  :data
  51
  52   PROVIDE(_data = ADDR(.rodata));
  53   PROVIDE(_data_lma = LOADADDR(.rodata));
  54   PROVIDE(_edata = .);
  55
  56   .bss ALIGN((ORIGIN(memory_mem) + 0x0), 8) : AT(ALIGN((ORIGIN(memory_mem) + 0x0), 8)) ALIGN(8) {
  57     PROVIDE(_fbss = .);
  58     PROVIDE(__global_pointer$ = . + 0x7C0);
  59     *(.sbss .sbss.* .gnu.linkonce.sb.*)
  60     *(.bss .bss.* .gnu.linkonce.b.*)
  61     . = ALIGN(8);
  62     PROVIDE(_ebss = .);
  63   } >memory_mem  :bss
  64
  65   PROVIDE(_end = .);
  66
  67   /*
  68    * heap_stack_region_usable_end: (ORIGIN(memory_mem) + LENGTH(memory_mem))
  69    * heap_stack_min_size: 4096
  70    * heap_stack_max_size: 1048576
  71    */
  72   PROVIDE(_sp = ALIGN(MIN((ORIGIN(memory_mem) + LENGTH(memory_mem)), _ebss + 1048576) - 7, 8));
  73   PROVIDE(_heap_end = _sp - 2048);
  74
  75   /* This section is a noop and is only used for the ASSERT */
  76   .stack : {
  77     ASSERT(_sp >= (_ebss + 4096), "Error: No room left for the heap and stack");
  78   }
  79 }