From: Alan Cox <alan@linux.intel.com>
Date: Wed, 19 Oct 2016 19:48:03 +0000 (+0100)
Subject: v68: remove more fluff
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=60476204363d77374acac08e12b6cd7f639257fa;p=FUZIX.git

v68: remove more fluff
---

diff --git a/Kernel/platform-v68/main.c b/Kernel/platform-v68/main.c
index 51e7a11a..4afbb190 100644
--- a/Kernel/platform-v68/main.c
+++ b/Kernel/platform-v68/main.c
@@ -17,81 +17,19 @@ void do_beep(void)
 /*
  *	MMU initialize
  */
-#if 0
-void pagemap_init(void)
-{
-	/* Allocate the buddy tables and init them */
-//FIXME	buddy_init();
-}
-#endif
 
 void map_init(void)
 {
 }
 
-u_block udata_block[PTABSIZE];
 uaddr_t ramtop;
-uint8_t *membase[PTABSIZE];
 uint8_t need_resched;
-#if 0
-/* Offsets into the buddy map for each level, byte aligned */
-const uint16_t buddy_level[BUDDY_NUMLEVEL] = {
-	0,		/* 256 4K pages */
-	256,		/* 128 8K pages */
-	384,		/* 64 16K pages */
-	448,		/* 32 32K pages */
-	480,		/* 16 64K pages */
-	496,		/* 8 128K pages */
-	504,		/* 4 256K pages */
-	508,		/* 2 512K pages */
-	510,		/* 1 1MB page */
-};
-#endif
-/*
- *	We can do our fork handling in C for once. The only oddity here is
- *	the fixups to run parent first and avoid needless memory thrashing
- */
-int16_t dofork(ptptr p)
-{
-	/* Child and parent udata pointers */
-	struct u_data *uc = &udata_block[p - ptab].u_d;
-	struct u_data *up = udata_ptr;
-	uint32_t *csp = (uint32_t *)(uc + 1);
-	uint32_t *psp = up->u_sp;
-	/* Duplicate the memory maps */
-	/* FIXME 
-	if (pagemap_fork(p))
-		return -1; */
-	/* Duplicate the udata */
-	memcpy(&uc, &up, sizeof(struct u_data));
-	/* Use the child udata for initializing the child */
-	udata_ptr = uc;
-	newproc(p);
-	udata_ptr = up;
-	/* And return as the parent. The child will return via the
-	   fork return path */
-	/* FIXME: stack setup needs correcting */
-//FIXME	*--csp = fork_return;
-	uc->u_sp = csp;
-	/* Copy the saved register state over - must match switchin */
-	memcpy(csp - 14, psp - 14, 4 * 14);
-	/* Return as the parent and run it first (backwards to most ports) */
-	p->p_status = P_READY;
-	udata.u_ptab->p_status = P_RUNNING;
-	return p->p_pid;
-}
-
-/* All our binaries are zero address based */
 
 uaddr_t pagemap_base(void)
 {
 	return 0x20000UL;
 }
 
-void program_mmu(uint8_t *phys, usize_t top)
-{
-}
-
 uint8_t platform_param(char *p)
 {
 	return 0;
@@ -118,3 +56,6 @@ arg_t _memfree(void)
 	return -1;
 }
 
+/* Live udata and kernel stack */
+u_block udata_block;
+uint16_t irqstack[128];	/* Used for swapping only */