feat: add lab-rv32i-c-smalloc-sbrk-libc card

2026-07-21 19:14:20 +02:00
commit d522c15f75
33 changed files with 5965 additions and 0 deletions
@@ -0,0 +1,93 @@
+OUTPUT_FORMAT("elf32-littleriscv")
+OUTPUT_ARCH(riscv)
+ENTRY(_start)
+
+MEMORY
+{
+  RAM (rwx) : ORIGIN = 0x80000000, LENGTH = 16M
+}
+
+PHDRS
+{
+  text PT_LOAD FLAGS(5); /* read + execute */
+  data PT_LOAD FLAGS(6); /* read + write */
+  tls  PT_TLS  FLAGS(4); /* TLS template */
+}
+
+SECTIONS
+{
+  . = ORIGIN(RAM);
+
+  .text : ALIGN(4)
+  {
+    KEEP(*(.vectors))
+    *(.text.startup .text.startup.*)
+    *(.text .text.*)
+  } > RAM :text
+
+  .rodata : ALIGN(4)
+  {
+    *(.rodata .rodata.*)
+  } > RAM :text
+
+  .data : ALIGN(16)
+  {
+    __data_start = .;
+    *(.data .data.*)
+    *(.sdata .sdata.*)
+    __data_end = .;
+  } > RAM :data
+
+  .tdata : ALIGN(16)
+  {
+    __tls_start = .;
+    *(.tdata .tdata.* .gnu.linkonce.td.*)
+    __tdata_end = .;
+  } > RAM :data :tls
+
+  .tbss (NOLOAD) : ALIGN(16)
+  {
+    __tbss_start = .;
+    *(.tbss .tbss.* .gnu.linkonce.tb.*)
+    *(.tcommon)
+    __tbss_end = .;
+  } > RAM :data :tls
+
+  /* GNU ld does not advance the normal location counter for TLS NOBITS. */
+  .tbss_space (NOLOAD) : ALIGN(16)
+  {
+    . = ADDR(.tbss) + SIZEOF(.tbss);
+  } > RAM :data
+
+  .bss (NOLOAD) : ALIGN(16)
+  {
+    __bss_start = .;
+    *(.bss .bss.* COMMON)
+    *(.sbss .sbss.*)
+    __bss_end = .;
+  } > RAM :data
+
+  . = ALIGN(16);
+  __heap_start = .;
+  _end = __heap_start;
+  PROVIDE(end = __heap_start);
+
+  __stack_top = ORIGIN(RAM) + LENGTH(RAM);
+  __stack_reserve = 64K;
+  __stack_bottom = __stack_top - __stack_reserve;
+  __heap_end = __stack_bottom;
+  __global_pointer$ = __data_start + 0x800;
+
+  /DISCARD/ :
+  {
+    *(.comment)
+    *(.note .note.*)
+  }
+}
+
+ASSERT(__heap_start <= __heap_end,
+       "C09: heap overlaps the reserved 64 KiB stack")
+ASSERT((__heap_start & 15) == 0,
+       "C09: __heap_start must be 16-byte aligned")
+ASSERT((__heap_end & 15) == 0,
+       "C09: __heap_end must be 16-byte aligned")