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3 files changed, 72 insertions, 0 deletions

diff --git a/src/user/runtimes/asm/elf.ld b/src/user/runtimes/asm/elf.ld
new file mode 100644
index 0000000..aaef517
--- /dev/null
+++ b/src/user/runtimes/asm/elf.ld
@@ -0,0 +1,8 @@
+OUTPUT_FORMAT(elf32-i386)
+OUTPUT_ARCH(i386)
+ENTRY(_entry)
+
+MEMORY {
+  kernel (!a) : ORIGIN = 0x00000000, LENGTH = 0x08000000
+  user  (awx) : ORIGIN = 0x08000000, LENGTH = 0xf8000000
+}
\ No newline at end of file
diff --git a/src/user/runtimes/c/elf.ld b/src/user/runtimes/c/elf.ld
new file mode 100644
index 0000000..f321be2
--- /dev/null
+++ b/src/user/runtimes/c/elf.ld
@@ -0,0 +1,22 @@
+OUTPUT_FORMAT(elf32-i386)
+OUTPUT_ARCH(i386)
+ENTRY(__pcrt_entry)
+
+MEMORY {
+  kernel (!a) : ORIGIN = 0x00000000, LENGTH = 0x08000000
+  user  (awx) : ORIGIN = 0x08000000, LENGTH = 0xf8000000
+}
+
+SECTIONS {
+  .__pcrt_before_main : {
+    __pcrt_before_main_start = .;
+    *(.__pcrt_before_main)
+    __pcrt_before_main_end = .;
+  }
+
+  .__pcrt_before_quit : {
+    __pcrt_before_quit_start = .;
+    *(.__pcrt_before_quit)
+    __pcrt_before_quit_end = .;
+  }
+}
\ No newline at end of file
diff --git a/src/user/runtimes/c/entry.asm b/src/user/runtimes/c/entry.asm
new file mode 100644
index 0000000..bba8060
--- /dev/null
+++ b/src/user/runtimes/c/entry.asm
@@ -0,0 +1,42 @@
+bits 32
+
+global __pcrt_entry
+global __pcrt_quit
+
+extern main
+extern __pcrt_before_main_start
+extern __pcrt_before_main_end
+extern __pcrt_before_quit_start
+extern __pcrt_before_quit_end
+
+section .text
+__pcrt_entry:
+  mov esp, stack
+  push edx
+
+  mov ebx, __pcrt_before_main_start
+.before_main_loop:
+  cmp ebx, __pcrt_before_main_end
+  je .call_main
+  call dword [ebx]
+  add ebx, 4
+  jmp .before_main_loop
+
+.call_main:
+  call main
+
+__pcrt_quit:
+  mov ebx, __pcrt_before_quit_start
+.before_quit_loop:
+  cmp ebx, __pcrt_before_quit_end
+  je .end_task
+  call dword [ebx]
+  add ebx, 4
+  jmp .before_quit_loop
+
+.end_task:
+  int 0x38
+
+section .stack nobits alloc noexec write align=16
+resb 4096
+stack:
\ No newline at end of file