From 69a7cb520189e910ba85123275d025704beee4e6 Mon Sep 17 00:00:00 2001
From: cheapie <cheapiephp@gmail.com>
Date: Fri, 19 Jun 2026 23:15:24 -0500
Subject: Add random number printer sample

---
 c/randomnumbers/Makefile          |  20 +++++++++++++++++
 c/randomnumbers/randomnumbers.c   |  14 ++++++++++++
 c/randomnumbers/randomnumbers.elf | Bin 0 -> 6288 bytes
 c/randomnumbers/randomnumbers.hex |  13 +++++++++++
 c/randomnumbers/randomnumbers.o   | Bin 0 -> 1420 bytes
 c/randomnumbers/rvcontroller.ld   |  45 ++++++++++++++++++++++++++++++++++++++
 6 files changed, 92 insertions(+)
 create mode 100644 c/randomnumbers/Makefile
 create mode 100644 c/randomnumbers/randomnumbers.c
 create mode 100755 c/randomnumbers/randomnumbers.elf
 create mode 100644 c/randomnumbers/randomnumbers.hex
 create mode 100644 c/randomnumbers/randomnumbers.o
 create mode 100644 c/randomnumbers/rvcontroller.ld

(limited to 'c/randomnumbers')

diff --git a/c/randomnumbers/Makefile b/c/randomnumbers/Makefile
new file mode 100644
index 0000000..4fa36c6
--- /dev/null
+++ b/c/randomnumbers/Makefile
@@ -0,0 +1,20 @@
+all: randomnumbers.hex
+
+randomnumbers.o: randomnumbers.c
+	clang -target riscv32-none-elf -I../rvcontroller-libraries -march=rv32imacb_zicntr_zicond_zicsr_zifencei_zihintpause_zilsd_zclsd_zabha_zacas_zbkb_zbkx_zcb_zcmp_zcmt -ffreestanding -O3 -c -o randomnumbers.o randomnumbers.c
+
+randomnumbers.elf: ../rvcontroller-libraries/rvcontroller-init.o ../rvcontroller-libraries/rvcontroller-ecalls.o randomnumbers.o
+	clang -target riscv32-none-elf -T rvcontroller.ld -nostdlib -nostartfiles -Xlinker --no-warn-rwx-segments -o randomnumbers.elf ../rvcontroller-libraries/rvcontroller-init.o randomnumbers.o ../rvcontroller-libraries/rvcontroller-ecalls.o
+
+dump: randomnumbers.elf
+	riscv32-none-elf-objdump -d randomnumbers.elf
+
+randomnumbers.hex: randomnumbers.elf
+	riscv32-none-elf-objcopy -O ihex randomnumbers.elf randomnumbers.hex
+
+load: randomnumbers.hex
+	bash -c "wl-copy < randomnumbers.hex"
+
+clean:
+	rm -f randomnumbers.hex randomnumbers.elf randomnumbers.o init.o
+
diff --git a/c/randomnumbers/randomnumbers.c b/c/randomnumbers/randomnumbers.c
new file mode 100644
index 0000000..b0e0d13
--- /dev/null
+++ b/c/randomnumbers/randomnumbers.c
@@ -0,0 +1,14 @@
+/* Random Number Thing for RVController
+ * A product of Advanced Mesecons Devices, a Cheapie Systems company
+ * This is free and unencumbered software released into the public domain.
+ * See http://unlicense.org/ for more information */
+
+#include <stdint.h>
+#include "rvcontroller-ecalls.h"
+
+void main(void) {
+	for (;;) {
+		printint(randomint(0,999999));
+		printchar('\n');
+	}
+}
diff --git a/c/randomnumbers/randomnumbers.elf b/c/randomnumbers/randomnumbers.elf
new file mode 100755
index 0000000..d9ac97e
Binary files /dev/null and b/c/randomnumbers/randomnumbers.elf differ
diff --git a/c/randomnumbers/randomnumbers.hex b/c/randomnumbers/randomnumbers.hex
new file mode 100644
index 0000000..c61811b
--- /dev/null
+++ b/c/randomnumbers/randomnumbers.hex
@@ -0,0 +1,13 @@
+:10000000370101002920A94873000000828052B8FE
+:1000100037440F001304F4230145A2858D282120C5
+:1000200029451128D5BF854873000000828091487A
+:10003000730000008280AD48730000008280930846
+:1000400010087300000082809308500873000000BD
+:10005000828093087008730000008280732510C0AE
+:100060008280732500C082809308600873000000BE
+:1000700082800589F322008093920248B3E2A200B5
+:1000800073900280828095487300000082809308FC
+:100090000008730000008280A14873000000828085
+:1000A00093083008730000008280930840087300B2
+:0400B000000082804A
+:00000001FF
diff --git a/c/randomnumbers/randomnumbers.o b/c/randomnumbers/randomnumbers.o
new file mode 100644
index 0000000..b922158
Binary files /dev/null and b/c/randomnumbers/randomnumbers.o differ
diff --git a/c/randomnumbers/rvcontroller.ld b/c/randomnumbers/rvcontroller.ld
new file mode 100644
index 0000000..985892b
--- /dev/null
+++ b/c/randomnumbers/rvcontroller.ld
@@ -0,0 +1,45 @@
+/* Thanks https://github.com/darklife/darkriscv */
+  __heap_size    = 0x200;  /* required amount of heap */
+  __stack_size  = 0x800;  /* required amount of stack */
+  ENTRY(_start);
+  MEMORY
+  {
+    RAM (rwx) : ORIGIN = 0x00000000, LENGTH = 0x10000
+  }
+  SECTIONS
+  {
+    .text :
+    {
+      *(.text.startup)
+      *(.text)
+      *(.text)
+      *(.rodata*)
+    } > RAM
+    .data :
+    {
+      *(.sbss)
+      *(.data)
+      *(.bss)
+      *(.rela*)
+      *(COMMON)
+    } > RAM
+
+    .heap :
+    {
+      . = ALIGN(4);
+      PROVIDE ( end = . );
+      _sheap = .;
+      . = . + __heap_size;
+      . = ALIGN(4);
+      _eheap = .;
+    } >RAM
+
+    .stack :
+    {
+      . = ALIGN(4);
+      _estack = .;
+      . = . + __stack_size;
+      . = ALIGN(4);
+      _sstack = .;
+    } >RAM
+  }
-- 
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