From 5f220ff09bd29fae0b2634396d6b160fbc04b724 Mon Sep 17 00:00:00 2001
From: Eyck Jentzsch <eyck@minres.com>
Date: Sat, 29 Nov 2025 06:38:45 +0100
Subject: [PATCH] simplifies linker scripts of riscv-vp

---
 env/riscv_vp/ram.lds     |  12 +++
 env/riscv_vp/sections.ld | 171 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 183 insertions(+)
 create mode 100644 env/riscv_vp/ram.lds
 create mode 100644 env/riscv_vp/sections.ld

diff --git a/env/riscv_vp/ram.lds b/env/riscv_vp/ram.lds
new file mode 100644
index 0000000..d8158e5
--- /dev/null
+++ b/env/riscv_vp/ram.lds
@@ -0,0 +1,12 @@
+OUTPUT_ARCH( "riscv" )
+
+ENTRY( _start )
+
+INCLUDE memory_map.ld
+
+REGION_ALIAS("REGION_TEXT", ram);
+REGION_ALIAS("REGION_RODATA", ram);
+REGION_ALIAS("REGION_DATA", ram);
+REGION_ALIAS("REGION_BSS", ram);
+
+INCLUDE sections.ld
\ No newline at end of file
diff --git a/env/riscv_vp/sections.ld b/env/riscv_vp/sections.ld
new file mode 100644
index 0000000..87b811d
--- /dev/null
+++ b/env/riscv_vp/sections.ld
@@ -0,0 +1,171 @@
+PHDRS
+{
+  flash PT_LOAD;
+  ram_init PT_LOAD;
+  ram PT_NULL;
+  dram PT_NULL;
+}
+
+SECTIONS
+{
+  __stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
+
+  .init ORIGIN(REGION_TEXT)        :
+  {
+    KEEP (*(SORT_NONE(.init)))
+  } >REGION_TEXT AT>REGION_TEXT :flash
+
+  .text           :
+  {
+    *(.text.unlikely .text.unlikely.*)
+    *(.text.startup .text.startup.*)
+    *(.text .text.*)
+    *(.gnu.linkonce.t.*)
+  } >REGION_TEXT AT>REGION_TEXT :flash
+
+  .fini           :
+  {
+    KEEP (*(SORT_NONE(.fini)))
+  } >REGION_TEXT AT>REGION_TEXT :flash
+
+  PROVIDE (__etext = .);
+  PROVIDE (_etext = .);
+  PROVIDE (etext = .);
+
+  .rodata         :
+  {
+    *(.rdata)
+    *(.rodata .rodata.*)
+    *(.gnu.linkonce.r.*)
+  } >REGION_RODATA AT>REGION_RODATA :flash
+
+  . = ALIGN(4);
+
+  .preinit_array  :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >REGION_RODATA AT>REGION_RODATA :flash
+
+  .init_array     :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+    KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >REGION_RODATA AT>REGION_RODATA :flash
+
+  .fini_array     :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
+    KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >REGION_RODATA AT>REGION_RODATA :flash
+
+  .ctors          :
+  {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*crtbegin?.o(.ctors))
+    /* We don't want to include the .ctor section from
+       the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  } >REGION_RODATA AT>REGION_RODATA :flash
+
+  .dtors          :
+  {
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*crtbegin?.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  } >REGION_RODATA AT>REGION_RODATA :flash
+
+  .dummy          :
+  {
+	*(.comment.*)
+
+  }
+  .lalign         :
+  {
+    . = ALIGN(4);
+    PROVIDE( _data_lma = . );
+  } >REGION_RODATA AT>REGION_RODATA :flash
+
+  .dalign         :
+  {
+    . = ALIGN(4);
+    PROVIDE( _data = . );
+  } >REGION_DATA AT>REGION_RODATA :ram_init
+
+  .data          :
+  {
+    __DATA_BEGIN__ = .;
+    *(.data .data.*)
+    *(.gnu.linkonce.d.*)
+  } >REGION_DATA AT>REGION_RODATA :ram_init
+
+  .sdata          :
+  {
+    __SDATA_BEGIN__ = .;
+    *(.sdata .sdata.*)
+    *(.gnu.linkonce.s.*)
+  } >REGION_DATA AT>REGION_RODATA :ram_init
+
+  .srodata        :
+  {
+    *(.srodata.cst16)
+    *(.srodata.cst8)
+    *(.srodata.cst4)
+    *(.srodata.cst2)
+    *(.srodata .srodata.*)
+  } >REGION_DATA AT>REGION_RODATA :ram_init
+
+  . = ALIGN(4);
+  PROVIDE( _edata = . );
+  PROVIDE( edata = . );
+
+  PROVIDE( _fbss = . );
+  PROVIDE( __bss_start = . );
+  .bss            :
+  {
+    *(.sbss*)
+    *(.gnu.linkonce.sb.*)
+    *(.bss .bss.*)
+    *(.gnu.linkonce.b.*)
+    *(COMMON)
+    . = ALIGN(4);
+  } >REGION_BSS AT>REGION_BSS :ram
+
+  . = ALIGN(8);
+  __BSS_END__ = .;
+  __global_pointer$ = MIN(__SDATA_BEGIN__ + 0x800,  MAX(__DATA_BEGIN__ + 0x800, __BSS_END__ - 0x800));
+  PROVIDE( _end = . );
+  PROVIDE( end = . );
+
+  .stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
+  {
+    PROVIDE( _heap_end = . );
+    . = __stack_size;
+    PROVIDE( _sp = . );
+  } >REGION_BSS AT>REGION_BSS :ram
+
+
+  
+  PROVIDE( tohost = . );
+  PROVIDE( fromhost = . + 8 );
+}