From f59776e7929db9c43da559171eb1058c5a464dae Mon Sep 17 00:00:00 2001
From: Sam Buckley <samuel_buckley@outlook.com>
Date: Tue, 16 Jul 2024 22:42:49 +0100
Subject: [PATCH] Update string lib for num format - Trees

---
 kernel/src/holeybytes/ecah.rs            |  4 +-
 sysdata/libraries/stn/src/string.hb      | 46 ++++++++++++++++-
 sysdata/limine.cfg                       |  2 +-
 sysdata/programs/time_driver/meta.toml   | 11 ++++
 sysdata/programs/time_driver/src/main.hb | 64 ++++++++++++++++++++++++
 sysdata/system_config.toml               |  7 ++-
 6 files changed, 129 insertions(+), 5 deletions(-)
 create mode 100644 sysdata/programs/time_driver/meta.toml
 create mode 100644 sysdata/programs/time_driver/src/main.hb

diff --git a/kernel/src/holeybytes/ecah.rs b/kernel/src/holeybytes/ecah.rs
index fbf0f103..846957b7 100644
--- a/kernel/src/holeybytes/ecah.rs
+++ b/kernel/src/holeybytes/ecah.rs
@@ -177,7 +177,9 @@ pub fn handler(vm: &mut Vm) {
                 unsafe fn x86_out(address: u16, value: u32) {
                     x86_64::instructions::port::Port::new(address).write(value);
                 }
-                vm.registers[3] = hbvm::value::Value(unsafe { x86_in(r2 as u16) } as u64);
+                let x = hbvm::value::Value(unsafe { x86_in(r2 as u16) } as u64);
+                info!("Read {:?} from Port {:?}", x, r2);
+                vm.registers[3] = x
             }
         }
         // 5
diff --git a/sysdata/libraries/stn/src/string.hb b/sysdata/libraries/stn/src/string.hb
index 3ee31a61..ab4e5fe3 100644
--- a/sysdata/libraries/stn/src/string.hb
+++ b/sysdata/libraries/stn/src/string.hb
@@ -5,4 +5,48 @@ length := fn(ptr: ^u8): int {
         ptr += 1;
 	}
     return len;
-}
\ No newline at end of file
+}
+
+display_int := fn(num: int): ^u8 {
+    p := page;
+    i := 0;
+    if num == 0 {
+        set(p, 48);
+        return p;
+    }
+    loop {
+        if num == 0 break;
+        set(p + i, num % 10 + 48);
+        num /= 10;
+        i += 1;
+    }
+    reverse(p);
+    //null terminate
+    set(p + i, 0);
+    return p;
+}
+
+reverse := fn(s: ^u8): void {
+    //reverse a string, don't remove digits
+    len := 0;
+    loop {
+        if *(s + len) == 0 break;
+        len += 1;
+    }
+    i := 0;
+    j := len - 1;
+    loop {
+        if i >= j break;
+        temp := *(s + i);
+        *(s + i) = *(s + j);
+        *(s + j) = temp;
+        i += 1;
+        j -= 1;
+    }
+    return;
+}
+
+set := fn(change: ^int, new: int): void {
+    *(change) = new;
+    return;
+}
diff --git a/sysdata/limine.cfg b/sysdata/limine.cfg
index 14ad16ea..18ec894c 100644
--- a/sysdata/limine.cfg
+++ b/sysdata/limine.cfg
@@ -37,4 +37,4 @@ TERM_BACKDROP=008080
     MODULE_CMDLINE="height=10 width=10 arch=${ARCH}"
 
     MODULE_PATH=boot:///serial_driver.hbf
-    MODULE_CMDLINE="arch=${ARCH}"
\ No newline at end of file
+    MODULE_CMDLINE="arch=${ARCH}"
diff --git a/sysdata/programs/time_driver/meta.toml b/sysdata/programs/time_driver/meta.toml
new file mode 100644
index 00000000..84cc97e6
--- /dev/null
+++ b/sysdata/programs/time_driver/meta.toml
@@ -0,0 +1,11 @@
+[package]
+name = "time_driver"
+authors = ["SamBuckley"]
+
+[dependants.libraries]
+
+[dependants.binaries]
+hblang.version = "1.0.0"
+
+[build]
+command = "hblang src/main.hb"
diff --git a/sysdata/programs/time_driver/src/main.hb b/sysdata/programs/time_driver/src/main.hb
new file mode 100644
index 00000000..78a24960
--- /dev/null
+++ b/sysdata/programs/time_driver/src/main.hb
@@ -0,0 +1,64 @@
+stn := @use("../../../libraries/stn/src/lib.hb");
+log := stn.log;
+mem := stn.memory;
+page := 0
+
+main := fn(): void {
+    page += mem.request_page(1);
+    port_str := "\0\{46}\0";
+    a := @eca(u8, 3, 3, port_str, 2);
+    log.debug(&a);
+    n := 5000000;
+    loop {
+        if n == 0 break;
+        n -= 1;
+        stack_reclamation_edge_case := 0;
+    }
+    td := display_int(100);
+    log.debug(td);
+    return;
+}
+
+display_int := fn(num: int): ^u8 {
+    p := page;
+    i := 0;
+    if num == 0 {
+        set(p, 48);
+        return p;
+    }
+    loop {
+        if num == 0 break;
+        set(p + i, num % 10 + 48);
+        num /= 10;
+        i += 1;
+    }
+    reverse(p);
+    //null terminate
+    set(p + i, 0);
+    return p;
+}
+
+reverse := fn(s: ^u8): void {
+    //reverse a string, don't remove digits
+    len := 0;
+    loop {
+        if *(s + len) == 0 break;
+        len += 1;
+    }
+    i := 0;
+    j := len - 1;
+    loop {
+        if i >= j break;
+        temp := *(s + i);
+        *(s + i) = *(s + j);
+        *(s + j) = temp;
+        i += 1;
+        j -= 1;
+    }
+    return;
+}
+
+set := fn(change: ^int, new: int): void {
+    *(change) = new;
+    return;
+}
diff --git a/sysdata/system_config.toml b/sysdata/system_config.toml
index 553cc875..d7975bf6 100644
--- a/sysdata/system_config.toml
+++ b/sysdata/system_config.toml
@@ -24,5 +24,8 @@ path = "boot:///tests.hbf"
 # [boot.limine.ableos.modules.diskio_driver]
 # path = "boot:///diskio_driver.hbf"
 
-[boot.limine.ableos.modules.fb_driver]
-path = "boot:///fb_driver.hbf"
+# [boot.limine.ableos.modules.fb_driver]
+# path = "boot:///fb_driver.hbf"
+
+[boot.limine.ableos.modules.time_driver]
+path = "boot:///time_driver.hbf"
\ No newline at end of file