From 5daf52d92c472ebf2a675cb2d27ca3e3fbdf0034 Mon Sep 17 00:00:00 2001
From: Paul Oliver <contact@pauloliver.dev>
Date: Thu, 29 Feb 2024 02:39:32 +0100
Subject: Initial

---
 src/arch/dummy.c | 147 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 src/arch/dummy.c

(limited to 'src/arch/dummy.c')

diff --git a/src/arch/dummy.c b/src/arch/dummy.c
new file mode 100644
index 0000000..b440be3
--- /dev/null
+++ b/src/arch/dummy.c
@@ -0,0 +1,147 @@
+// Project: Salis
+// Author:  Paul Oliver
+// Email:   contact@pauloliver.dev
+
+/*
+ * Defines a minimal viable architecture for the Salis VM. Useful for
+ * debugging and benchmarking. Also, this file can be used as a template when
+ * implementing a real architecture.
+ */
+
+bool proc_is_live(const Core *core, u64 pix);
+
+#define PROC_FIELDS \
+    PROC_FIELD(u64, dmmy)
+
+struct Proc {
+#define PROC_FIELD(type, name) type name;
+    PROC_FIELDS
+#undef PROC_FIELD
+};
+
+#define MNEMONIC_BUFF_SIZE (0x10)
+
+const wchar_t *g_arch_byte_symbols = (
+    L"⠀⠁⠂⠃⠄⠅⠆⠇⡀⡁⡂⡃⡄⡅⡆⡇⠈⠉⠊⠋⠌⠍⠎⠏⡈⡉⡊⡋⡌⡍⡎⡏⠐⠑⠒⠓⠔⠕⠖⠗⡐⡑⡒⡓⡔⡕⡖⡗⠘⠙⠚⠛⠜⠝⠞⠟⡘⡙⡚⡛⡜⡝⡞⡟"
+    L"⠠⠡⠢⠣⠤⠥⠦⠧⡠⡡⡢⡣⡤⡥⡦⡧⠨⠩⠪⠫⠬⠭⠮⠯⡨⡩⡪⡫⡬⡭⡮⡯⠰⠱⠲⠳⠴⠵⠶⠷⡰⡱⡲⡳⡴⡵⡶⡷⠸⠹⠺⠻⠼⠽⠾⠿⡸⡹⡺⡻⡼⡽⡾⡿"
+    L"⢀⢁⢂⢃⢄⢅⢆⢇⣀⣁⣂⣃⣄⣅⣆⣇⢈⢉⢊⢋⢌⢍⢎⢏⣈⣉⣊⣋⣌⣍⣎⣏⢐⢑⢒⢓⢔⢕⢖⢗⣐⣑⣒⣓⣔⣕⣖⣗⢘⢙⢚⢛⢜⢝⢞⢟⣘⣙⣚⣛⣜⣝⣞⣟"
+    L"⢠⢡⢢⢣⢤⢥⢦⢧⣠⣡⣢⣣⣤⣥⣦⣧⢨⢩⢪⢫⢬⢭⢮⢯⣨⣩⣪⣫⣬⣭⣮⣯⢰⢱⢲⢳⢴⢵⢶⢷⣰⣱⣲⣳⣴⣵⣶⣷⢸⢹⢺⢻⢼⢽⢾⢿⣸⣹⣺⣻⣼⣽⣾⣿"
+);
+
+u64 arch_proc_mb0_addr(const Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    return 0;
+}
+
+u64 arch_proc_mb0_size(const Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    return 0;
+}
+
+u64 arch_proc_mb1_addr(const Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    return 0;
+}
+
+u64 arch_proc_mb1_size(const Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    return 0;
+}
+
+u64 arch_proc_ip_addr(const Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    return 0;
+}
+
+u64 arch_proc_sp_addr(const Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    return 0;
+}
+
+u64 arch_proc_slice(const Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    return 1;
+}
+
+void arch_on_proc_kill(Core *core) {
+    assert(core);
+    assert(core->pnum > 1);
+
+    (void)core;
+}
+
+#if ACTION == ACT_BENCH || ACTION == ACT_NEW
+void arch_anc_init(Core *core, u64 size) {
+    assert(core);
+
+    (void)core;
+    (void)size;
+}
+#endif
+
+void arch_proc_step(Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    return;
+}
+
+#ifndef NDEBUG
+void arch_validate_proc(const Core *core, u64 pix) {
+    assert(core);
+    assert(proc_is_live(core, pix));
+
+    (void)core;
+    (void)pix;
+
+    assert(true);
+}
+#endif
+
+wchar_t arch_symbol(u8 inst) {
+    return g_arch_byte_symbols[inst];
+}
+
+void arch_mnemonic(u8 inst, char *buff) {
+    assert(buff);
+
+    snprintf(buff, MNEMONIC_BUFF_SIZE, "dummy %#x", inst);
+}
-- 
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