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-rw-r--r--elf/segment.lua36
1 files changed, 29 insertions, 7 deletions
diff --git a/elf/segment.lua b/elf/segment.lua
index 662f42e..19cb6d0 100644
--- a/elf/segment.lua
+++ b/elf/segment.lua
@@ -3,17 +3,39 @@ local fmt = require("elf.fmt")
---@class Segment
---@field type SegmentType
----@field flags integer
----@field offset integer
----@field vaddr integer
----@field paddr integer
----@field filesz integer
----@field memsz integer
----@field align integer
+---@field flags? integer
+---@field offset? integer
+---@field vaddr? integer
+---@field paddr? integer
+---@field filesz? integer
+---@field memsz? integer
+---@field align? integer
+---@field first_section? string
+---@field last_section? string
---@class Segments
local M = {}
+
+function M.normalize(phdrs)
+ for _, phdr in ipairs(phdrs) do
+ phdr.flags = phdr.flags or 0
+ phdr.offset = phdr.offset or 0
+ phdr.vaddr = phdr.vaddr or 0
+ phdr.paddr = phdr.paddr or 0
+ phdr.filesz = phdr.filesz or 0
+ phdr.memsz = phdr.memsz or 0
+ phdr.align = phdr.align or 1
+ end
+end
+
+function M.validate(phdrs)
+ for _, phdr in ipairs(phdrs) do
+ if not phdr.type then error("type is required in segment", 3) end
+ -- TODO additional validations
+ end
+end
+
---@param phdr Segment
---@param endian Endian
---@return string