)]}'
{
  "commit": "d3ffd7f77654adafe5f1989bdfdbe4a337ff2e8b",
  "tree": "4175e17a9569dcc539f92e32ed3ec098328217ee",
  "parents": [
    "fd0ff19bf435b267caae6a1ae04e7b4a4ba64f5b"
  ],
  "author": {
    "name": "Nelson Chu",
    "email": "nelson.chu@sifive.com",
    "time": "Fri Nov 19 17:11:06 2021 +0800"
  },
  "committer": {
    "name": "Nelson Chu",
    "email": "nelson.chu@sifive.com",
    "time": "Fri Nov 19 18:50:27 2021 +0800"
  },
  "message": "RISC-V: Support new .option arch directive.\n\nhttps://github.com/riscv/riscv-asm-manual/pull/67\n\nFormat:\n.option arch, +\u003cextension\u003e\u003cversion\u003e, ...\n.option arch, -\u003cextension\u003e\n.option arch, \u003d\u003cISA string\u003e\n\nThe new direcitve is used to enable/disable extensions for the specific\ncode region.  For example,\n\n.attribute arch, \"rv64ic\"   # arch \u003d rv64i2p0_c2p0\n.option push\n.option arch, +d2p0, -c     # arch \u003d rv64i2p0_f2p0_d2p0, f is added implied\n.option arch, \u003drv32gc       # arch \u003d rv32i2p0_m2p0_a2p0_f2p0_d2p0_c2p0\n.option pop                 # arch \u003d rv64i2p0_c2p0\n\nNote that,\n1. \".option rvc/norvc\" have the same behavior as \".option arch +c/-c\".\n2. \".option arch -i\" is illegal, since we cannot remove base i extension.\n3. If arch\u003drv64i2p0, then \".option arch, +i3p0\" will update the i\u0027s version\n   from 2.0 to 3.0.\n4. If arch\u003drv64i3p0, then \".option arch, +i\" will update the i\u0027s version\n   from 2.0 to the default one according to the chosen isa spec.\n\nbfd/\n\t* elfxx-riscv.c (riscv_add_subset): If the subset is already added,\n\tand the new versions are not RISCV_UNKNOWN_VERSION, then update the\n\tversions to the subset list.\n\t(riscv_copy_subset): New function.  Copy the subset from list.\n\t(riscv_copy_subset_list): New function.  Return the new copyed list.\n\t(riscv_update_subset): Updated to make .option arch directives workable.\n\t* elfxx-riscv.h: Updated.\ngas/\n\t* config/tc-riscv.c (riscv_subsets): Defined as a pointer.\n\t(riscv_rps_as): Init the subset_list to NULL, we will set it later\n\tonce riscv_opts_stack is created or updated.\n\t(struct riscv_option_stack, riscv_opts_stack): Moved forward.\n\t(riscv_set_arch): Updated.\n\t(s_riscv_option): Support new .option arch directive, to add, remove\n\tor update subsets for the specific code region.\n\t(riscv_write_out_attrs): Updated.\n\t* doc/c-riscv.texi: Added document for new .option arch directive.\n\t* testsuite/gas/riscv/option-arch-01a.d: New testcase.\n\t* testsuite/gas/riscv/option-arch-01b.d: Likewise.\n\t* testsuite/gas/riscv/option-arch-01.s: Likewise..\n\t* testsuite/gas/riscv/option-arch-02.d: Likewise.\n\t* testsuite/gas/riscv/option-arch-02.s: Likewise.\n\t* testsuite/gas/riscv/option-arch-fail.d: Likewise.\n\t* testsuite/gas/riscv/option-arch-fail.l: Likewise.\n\t* testsuite/gas/riscv/option-arch-fail.s: Likewise.\n",
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