diff options
Diffstat (limited to 'ld/ld.texinfo')
| -rw-r--r-- | ld/ld.texinfo | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/ld/ld.texinfo b/ld/ld.texinfo index 835482d..ea21283 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -3764,15 +3764,20 @@ Every section has a virtual address (VMA) and a load address (LMA); see an output section description sets the VMA (@pxref{Output Section Address}). -The linker will normally set the LMA equal to the VMA. You can change -that by using the @code{AT} keyword. The expression @var{lma} that -follows the @code{AT} keyword specifies the load address of the -section. +The expression @var{lma} that follows the @code{AT} keyword specifies +the load address of the section. Alternatively, with @samp{AT>@var{lma_region}} expression, you may specify a memory region for the section's load address. @xref{MEMORY}. Note that if the section has not had a VMA assigned to it then the linker will use the @var{lma_region} as the VMA region as well. + +If neither @code{AT} nor @code{AT>} is specified for an allocatable +section, the linker will set the LMA such that the difference between +VMA and LMA for the section is the same as the preceding output +section in the same region. If there is no preceding output section +or the section is not allocatable, the linker will set the LMA equal +to the VMA. @xref{Output Section Region}. @cindex ROM initialized data @@ -4586,7 +4591,9 @@ anywhere that an ordinary symbol is allowed in an expression. @cindex holes Assigning a value to @code{.} will cause the location counter to be moved. This may be used to create holes in the output section. The -location counter may never be moved backwards. +location counter may not be moved backwards inside an output section, +and may not be moved backwards outside of an output section if so +doing creates areas with overlapping LMAs. @smallexample SECTIONS |