From a1b9cf7f22b55a7047ad56e513204af8c9e4fa84 Mon Sep 17 00:00:00 2001
From: Anton Lydike <me@antonlydike.de>
Date: Sun, 18 Apr 2021 19:19:28 +0200
Subject: [PATCH] provide global syscall symbols if flag is set

---
 riscemu/CPU.py     | 4 ++++
 riscemu/Syscall.py | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/riscemu/CPU.py b/riscemu/CPU.py
index 5431887..0db3423 100644
--- a/riscemu/CPU.py
+++ b/riscemu/CPU.py
@@ -27,6 +27,10 @@ class CPU:
         self.regs = Registers(conf)
         self.syscall_int = SyscallInterface()
 
+        # provide global syscall symbols if option is set
+        if conf.include_scall_symbols:
+            self.mmu.global_symbols.update(self.syscall_int.get_syscall_symbols())
+
     def load(self, e: 'Executable'):
         return self.mmu.load_bin(e)
 
diff --git a/riscemu/Syscall.py b/riscemu/Syscall.py
index 5d3c117..60a889e 100644
--- a/riscemu/Syscall.py
+++ b/riscemu/Syscall.py
@@ -165,3 +165,8 @@ class SyscallInterface:
     def exit(self, scall: Syscall):
         scall.cpu.exit = True
         scall.cpu.exit_code = scall.registers.get('a0')
+
+    def get_syscall_symbols(self):
+        symbols = dict()
+        for num, name in SYSCALLS.items():
+            symbols['SCALL_' + name.upper()] = num
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