more abstract build

1 files changed, 0 insertions, 139 deletions

diff --git a/service/dynamic_x86_64.c b/service/dynamic_x86_64.c
deleted file mode 100644
index 02538ec..0000000
--- a/service/dynamic_x86_64.c
+++ /dev/null
@@ -1,139 +0,0 @@
-#include <kc.h>
-
-#include <libc/string.h>
-#include <lib/elf.h>
-
-extern void _rtld_link(void);
-
-struct elf64_relatab
-{
-	Elf64_Rela *entries;
-	size_t size;
-	size_t entsize;
-};
-
-struct elf64_symtab
-{
-	Elf64_Sym *entries;
-	const char *strings;
-	size_t strsize;
-};
-
-struct elf64_dso_info
-{
-	char *base;
-	struct elf64_relatab jmprel;
-	struct elf64_relatab reladyn;
-	struct elf64_symtab dynsym;
-	Elf64_Addr *pltgot;
-};
-
-static struct elf64_dso_info dso_info;
-
-void kc_dynamic_init(char *base, Elf64_Dyn *dyn)
-{
-	dso_info = (struct elf64_dso_info)
-	{
-		base,
-		{
-			elf64_dt_ptr(base, dyn, DT_JMPREL),
-			elf64_dt_val(dyn, DT_PLTRELSZ),
-			elf64_dt_val(dyn, DT_PLTREL) == DT_RELA ? sizeof(Elf64_Rela) : -1 
-		},
-		{
-			elf64_dt_ptr(base, dyn, DT_RELA),
-			elf64_dt_val(dyn, DT_RELASZ),
-			elf64_dt_val(dyn, DT_RELAENT)
-		},
-		{
-			elf64_dt_ptr(base, dyn, DT_SYMTAB),
-			elf64_dt_ptr(base, dyn, DT_STRTAB),
-			elf64_dt_val(dyn, DT_STRSZ)
-		},
-		elf64_dt_ptr(base, dyn, DT_PLTGOT)
-	};
-
-	if (dso_info.pltgot != nullptr)
-	{
-		dso_info.pltgot[1] = (uintptr_t)&dso_info;
-		dso_info.pltgot[2] = (uintptr_t)_rtld_link;
-	}
-
-	kc_dynamic_reloc(base, &dso_info.jmprel);
-	kc_dynamic_reloc(base, &dso_info.reladyn);
-}
-
-void *kc_dynamic_link(struct elf64_dso_info *dso, int index)
-{
-	struct kjarna_interface *ftab = entry_params->interface;
-
-	int symindex = ELF64_R_SYM(dso->jmprel.entries[index].r_info);
-	int strindex = dso->dynsym.entries[symindex].st_name;
-	const char *name = &dso->dynsym.strings[strindex];
-	uintptr_t *fixup = (uintptr_t *)(dso->base + dso->jmprel.entries[index].r_offset);
-
-	// TODO: generate a symbol table for kjarna interface
-	// TODO: implement symbol lookup (maybe hashed too)
-	if (strcmp(name, "open") == 0)
-	{
-		*fixup = (uintptr_t)*ftab->open;
-	}
-	else if (strcmp(name, "close") == 0)
-	{
-		*fixup = (uintptr_t)*ftab->close;
-	}
-	else if (strcmp(name, "read") == 0)
-	{
-		*fixup = (uintptr_t)*ftab->read;
-	}
-	else if (strcmp(name, "write") == 0)
-	{
-		*fixup = (uintptr_t)*ftab->write;
-	}
-	else if (strcmp(name, "lseek") == 0)
-	{
-		*fixup = (uintptr_t)*ftab->lseek;
-	}
-	else if (strcmp(name, "mmap") == 0)
-	{
-		*fixup = (uintptr_t)*ftab->mmap;
-	}
-	else if (strcmp(name, "munmap") == 0)
-	{
-		*fixup = (uintptr_t)*ftab->munmap;
-	}
-	else
-	{
-		return nullptr;
-	}
-
-	return fixup;
-}
-
-static void do_rela(char *base, Elf64_Rela *rela)
-{
-	uintptr_t *fixup = (uintptr_t *)(base + rela->r_offset);
-
-    switch (ELF64_R_TYPE(rela->r_info))
-    {
-        case R_X86_64_JUMP_SLOT:
-            *fixup += (uintptr_t)base;
-            break;
-        case R_X86_64_RELATIVE:
-            *fixup = (uintptr_t)(rela->r_addend + base);
-            break;
-        default:
-            break;
-    }
-}
-
-void kc_dynamic_reloc(char *base, struct elf64_relatab *rela)
-{
-	size_t entries = rela->size / rela->entsize;
-
-    for (size_t i = 0; rela->entries && (i < entries); i++)
-    {
-        do_rela(base, &rela->entries[i]);
-    }
-}
-